391 results on '"William L. Baker"'
Search Results
2. Scaling Landscape Fire History: Wildfires Not Historically Frequent in the Main Population of Threatened Gunnison Sage-Grouse
- Author
-
William L. Baker
- Subjects
wildfire ,Gunnison sage-grouse ,landscape ecology ,scale ,fire rotation ,frequent fire ,Physics ,QC1-999 - Abstract
The main population of ~5000 threatened Gunnison sage-grouse (GUSG; Centrocercus minimus) in Colorado depends on sagebrush plants that are killed by wildfires, with recovery taking decades, so frequent fire is a threat, but did it occur historically? Early land surveys showed that the historical (preindustrial) fire rotation (FR), the expected period to burn area equal to a focal land area, was 90–143 years in GUSG ranges, which is not classed as frequent fire (≤25 years). However, recent research, based on fire scars on trees at ten sites near sagebrush, suggested some frequent fire historically in the main population. That study was not spatial, essential to estimate FR, so spatial data were created in GIS with land-survey reconstructions, survey dates, fire-scar sites, mapped sagebrush, and Thiessen polygons around sites. The previous study assumed fires that burned 2+ sites likely burned across sagebrush. Historical FRs were calculated several ways over a common period. A recovery estimate of FR was 90–135 years, a land-survey estimate was 82–131 years, and three spatial scar-based estimates were 93–107 years, showing agreement. However, the comparison found that only 8.8% of the land-survey fire area was detected at fire-scar sites. Detailed analysis showed that 10 fire-scar sites were insufficient to detect historical fire sizes and distributions across the large 168,753 ha sagebrush area. Adequate fire reconstruction could require ~45–60 fire-scar sites, making it feasible to study only ~30,000 ha of sagebrush. Using the two remaining methods, which cross-validate, showed frequent fire did not occur historically in the study area, as historical FRs were 82–135 years.
- Published
- 2024
- Full Text
- View/download PDF
3. Harnessing Natural Disturbances: A Nature-Based Solution for Restoring and Adapting Dry Forests in the Western USA to Climate Change
- Author
-
William L. Baker, Chad T. Hanson, and Dominick A. DellaSala
- Subjects
wildfire ,drought ,beetle outbreak ,prescribed fire ,mechanical thinning ,command-and-control management ,Physics ,QC1-999 - Abstract
Natural disturbances (wildfires, droughts, beetle outbreaks) shaped temperate forests for millennia, including dry forests of the western USA. Could they now best restore and adapt dry forests to climate change while protecting nearby communities? Mechanical fuel-reduction treatments (e.g., thinning) reduce landscape heterogeneity and appear ineffective since
- Published
- 2023
- Full Text
- View/download PDF
4. Tree-Regeneration Decline and Type-Conversion after High-Severity Fires Will Likely Cause Little Western USA Forest Loss from Climate Change
- Author
-
William L. Baker
- Subjects
climate change ,wildfire ,post-fire regeneration ,type conversion ,western USA ,Science - Abstract
Temperate conifer forests stressed by climate change could be lost through tree regeneration decline in the interior of high-severity fires, resulting in type conversion to non-forest vegetation from seed-dispersal limitation, competition, drought stress, and reburns. However, is fire triggering this global change syndrome at a high rate? To find out, I analyzed a worst-case scenario. I calculated fire rotations (FRs, expected period to burn once across an area) across ~56 million ha of forests (~80% of total forest area) in 11 western USA states from 2000 to 2020 for total high-severity fire area, interior area (>90 m inward), and reburned area. Unexpectedly, there was no trend in area burned at high severity from 2000 to 2020 across the four forest types studied. The vulnerable interior area averaged only 21.9% of total high-severity fire area, as 78.1% of burned area was within 90 m of live seed sources where successful tree regeneration is likely. FRs averaged 453 years overall, 2089 years in interiors, and 19,514 years in reburns. Creation of vulnerable interior area in a particular location is thus, on average, a 2000+ year event, like a very rare natural disaster, and reburns that may favor type conversion to non-forest have almost no effect. This means that, from 2021 to 2050 at most, only 3.0–4.2% of total forest area may become a vulnerable interior area, based on a likely high aridity-based climate projection of future fire and a higher scenario, where rates in the exceptional 2020 fire year have become the norm. These findings show that increased management to reduce high-severity fires is not currently needed, as the risk to forests from this global change syndrome is likely quite low up to 2050. Faster and larger disturbances (e.g., severe droughts) are more likely to cause most tree mortality or forest loss that occurs by 2050.
- Published
- 2023
- Full Text
- View/download PDF
5. Countering Omitted Evidence of Variable Historical Forests and Fire Regime in Western USA Dry Forests: The Low-Severity-Fire Model Rejected
- Author
-
William L. Baker, Chad T. Hanson, Mark A. Williams, and Dominick A. DellaSala
- Subjects
ponderosa pine ,mixed conifer ,dry forests ,historical range of variability ,fire regime ,low-severity fire ,Physics ,QC1-999 - Abstract
The structure and fire regime of pre-industrial (historical) dry forests over ~26 million ha of the western USA is of growing importance because wildfires are increasing and spilling over into communities. Management is guided by current conditions relative to the historical range of variability (HRV). Two models of HRV, with different implications, have been debated since the 1990s in a complex series of papers, replies, and rebuttals. The “low-severity” model is that dry forests were relatively uniform, low in tree density, and dominated by low- to moderate-severity fires; the “mixed-severity” model is that dry forests were heterogeneous, with both low and high tree densities and a mixture of fire severities. Here, we simply rebut evidence in the low-severity model’s latest review, including its 37 critiques of the mixed-severity model. A central finding of high-severity fire recently exceeding its historical rates was not supported by evidence in the review itself. A large body of published evidence supporting the mixed-severity model was omitted. These included numerous direct observations by early scientists, early forest atlases, early newspaper accounts, early oblique and aerial photographs, seven paleo-charcoal reconstructions, ≥18 tree-ring reconstructions, 15 land survey reconstructions, and analysis of forest inventory data. Our rebuttal shows that evidence omitted in the review left a falsification of the scientific record, with significant land management implications. The low-severity model is rejected and mixed-severity model is supported by the corrected body of scientific evidence.
- Published
- 2023
- Full Text
- View/download PDF
6. Is Climate Change Restoring Historical Fire Regimes across Temperate Landscapes of the San Juan Mountains, Colorado, USA?
- Author
-
William L. Baker
- Subjects
climate change ,wildfire ,restoration ,San Juan Mountains ,Colorado ,Rocky Mountains ,Agriculture - Abstract
Wildfires are increasing with human-induced climate change, but could this be ecologically beneficial in landscapes where recent fire is deficient relative to historical? I compiled 1980–2020 fire data for the San Juan Mountains, Colorado. I analyzed fire sizes and trends in area burned and fire severity, and compared fire density and rotations between 1980–2010 and 2011–2020 among ecosystem types and watersheds. I compared historical (pre-industrial) evidence from tree-ring, charcoal, and land-survey reconstructions to evaluate whether recent fire is outside the historical range of variability (HRV). Nearly all burned area was in the southwestern San Juans in 5 of 41 years and 35 of 4716 wildfires. Between 1980–2010 and 2011–2020, fire densities increased ∼200% and rotations shortened to ∼25%, similarly among ecosystems and watersheds, consistent with climatic effects. Fire rotations in 2011–2020 were within HRV for three ecosystems and deficient for four. Fire sizes and severities were within HRV. Moderate- and high-severity fire had no significant trend. Thus, reducing fire size or severity is currently ecologically unnecessary. Instead, incorporating fire from climate change, via wildland fire use, supplemented by prescribed burning, could feasibly restore historical fire regimes in most San Juan landscapes by 2050, the target of the Paris 1.5 °C goal.
- Published
- 2022
- Full Text
- View/download PDF
7. Rivaroxaban’s Impact on Renal Decline in Patients With Nonvalvular Atrial Fibrillation: A US MarketScan Claims Database Analysis
- Author
-
Craig I. Coleman PharmD, Reinhold Kreutz MD, PhD, Nitesh Sood MD, Thomas J. Bunz PharmD, PhD, Anna-Katharina Meinecke PhD, Daniel Eriksson MSc, and William L. Baker PharmD
- Subjects
Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Warfarin has been associated with renovascular calcification and worsening renal function, whereas rivaroxaban may provide a degree of renopreservation by decreasing vascular inflammation. We sought to compare rivaroxaban and warfarin’s impact on renal decline in patients with nonvalvular atrial fibrillation (NVAF) treated in routine practice. Using US MarketScan claims data from January 2012 to December 2017, we identified patients with NVAF newly initiated on rivaroxaban or warfarin with ≥12 months of continuous insurance coverage prior to initiation. Patients with stage 5 chronic kidney disease (CKD) or receiving hemodialysis at baseline were excluded. Outcomes included rates (events/100 person-years) of hospital or emergency department admission for acute kidney injury (AKI) or progression to stage 5 CKD or need for hemodialysis. Differences in baseline covariates between cohorts were adjusted using inverse probability-of-treatment weights based on propensity scores (absolute standardized differences
- Published
- 2019
- Full Text
- View/download PDF
8. Effects of Sodium‐Glucose Cotransporter 2 Inhibitors on 24‐Hour Ambulatory Blood Pressure: A Systematic Review and Meta‐Analysis
- Author
-
William L. Baker, Leo F. Buckley, Michael S. Kelly, John D. Bucheit, Eric D. Parod, Roy Brown, Salvatore Carbone, Antonio Abbate, and Dave L. Dixon
- Subjects
ambulatory blood pressure monitoring ,diabetes mellitus ,diabetic therapy/glitazones ,high blood pressure ,hypertension ,metformin ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
BackgroundSodium‐glucose cotransporter 2 (SGLT2) inhibitors are a novel class of antihyperglycemic agents that improve glycemic control by increasing glycosuria. Additional benefits beyond glucose lowering include significant improvements in seated clinic blood pressure (BP), partly attributed to their diuretic‐like actions. Less known are the effects of this class on 24‐hour ambulatory BP, which is a better predictor of cardiovascular risk than seated clinic BP. Methods and ResultsWe performed a meta‐analysis of randomized, double‐blind, placebo‐controlled trials to investigate the effects of SGLT2 inhibitors on 24‐hour ambulatory BP. We searched all studies published before August 17, 2016, which reported 24‐hour ambulatory BP data. Mean differences in 24‐hour BP, daytime BP, and nighttime BP were calculated by a random‐effects model. SGLT2 inhibitors significantly reduce 24‐hour ambulatory systolic and diastolic BP by −3.76 mm Hg (95% CI, −4.23 to −2.34; I2=0.99) and −1.83 mm Hg (95% CI, −2.35 to −1.31; I2=0.76), respectively. Significant reductions in daytime and nighttime systolic and diastolic BP were also found. No association between baseline BP or change in body weight were observed. ConclusionsThis meta‐analysis shows that the reduction in 24‐hour ambulatory BP observed with SGLT2 inhibitors is a class effect. The diurnal effect of SGLT2 inhibitors on 24‐hour ambulatory BP may contribute to their favorable effects on cardiovascular outcomes.
- Published
- 2017
- Full Text
- View/download PDF
9. The International Society for Heart and Lung Transplantation/Heart Failure Society of America Guideline on Acute Mechanical Circulatory Support
- Author
-
Alexander M. Bernhardt, Hannah Copeland, Anita Deswal, Jason Gluck, Michael M. Givertz, Arthur Reshad Garan, Shelley Hall, Awori Hayanga, Ivan Knezevic, Federico Pappalardo, Joyce Wald, Cristiano Amarelli, William L. Baker, David Baran, Daniel Dilling, Airlie Hogan, Anna L. Meyer, Ivan Netuka, Minoru Ono, Gustavo Parrilla, Duc Thin Pham, Scott Silvestry, Christy Smith, Koji Takeda, Sunu S. Thomas, Esther Vorovich, Jo Ellen Rodgers, Nana Aburjania, Jean M. Connors, Jasmin S. Hanke, Elrina Joubert-Huebner, Gal Levy, Ann E. Woolley, David L.S. Morales, Amanda Vest, Francisco A. Arabia, Michael Carrier, Christopher T. Salerno, Benedikt Schrage, Savitri Fedson, Larry A. Allen, Cynthia J. Bither, Shannon Dunlay, Paola Morejon, Kay Kendall, Michael Kiernan, Sean Pinney, Stephan Schueler, Peter Macdonald, Diyar Saeed, Evgenij Potapov, and Tien M.H. Ng
- Subjects
Pulmonary and Respiratory Medicine ,Transplantation ,Surgery ,Cardiology and Cardiovascular Medicine - Published
- 2023
10. Effects of Intensive Systolic Blood Pressure Lowering on End-Stage Kidney Disease and Kidney Function Decline in Adults With Type 2 Diabetes Mellitus and Cardiovascular Risk Factors: A Post Hoc Analysis of ACCORD-BP and SPRINT
- Author
-
Yahya M.K. Tawfik, Benjamin W. Van Tassell, Dave L. Dixon, William L. Baker, John Fanikos, and Leo F. Buckley
- Subjects
Advanced and Specialized Nursing ,Endocrinology, Diabetes and Metabolism ,Internal Medicine - Abstract
OBJECTIVETo determine the effects of intensive systolic blood pressure (SBP) lowering on the risk of major adverse kidney outcomes in people with type 2 diabetes mellitus (T2DM) and/or prediabetes and cardiovascular risk factors.RESEARCH DESIGN AND METHODSThis post hoc ACCORD-BP subgroup analysis included participants in the standard glucose-lowering arm with cardiovascular risk factors required for SPRINT eligibility. Cox proportional hazards regression models compared the hazard for the composite of dialysis, kidney transplant, sustained estimated glomerular filtration rate (eGFR) 3.3 mg/dL, or a sustained eGFR decline ≥57% between the intensive (RESULTSThe study cohort included 1,966 SPRINT-eligible ACCORD-BP participants (40% women) with a mean age of 63 years. The mean SBP achieved after randomization was 120 ± 14 and 134 ± 15 mmHg in the intensive and standard arms, respectively. The kidney composite outcome occurred at a rate of 9.5 and 7.2 events per 1,000 person-years in the intensive and standard BP arms (hazard ratio [HR] 1.35 [95% CI 0.85–2.14]; P = 0.20). Intensive SBP lowering did not affect the risk of moderately (HR 0.96 [95% CI 0.76–1.20]) or severely (HR 0.92 [95% CI 0.66–1.28]) increased albuminuria. Including SPRINT participants with prediabetes in the cohort did not change the overall results.CONCLUSIONSThis post hoc subgroup analysis suggests that intensive SBP lowering does not increase the risk of major adverse kidney events in individuals with T2DM and cardiovascular risk factors.
- Published
- 2023
11. Development and Validation of a Model to Predict Malignancy Within the First Year After Adult Heart Transplantation
- Author
-
William L. Baker, Timothy E. Moore, Eric Baron, Douglas L. Jennings, and Abhishek Jaiswal
- Subjects
Transplantation - Abstract
Purpose: Malignancy after heart transplantation is associated with poor outcomes. At present, no prediction model exists for any malignancy within the first year after transplant. Methods: We studied adults who underwent heart transplantation included in the multicenter, national Scientific Registry of Transplant Recipients from January 2000 through April 2021. Possible predictors of malignancy were identified based on their known association with malignancy. Multiple imputations were conducted for missing values using predictive mean matching. A multivariable logistic regression model for predicting malignancy development within the first year after transplant was developed and internally validated via 500 bootstrapped samples to estimate the optimism-corrected measures of model accuracy and performance. Results: Among the 47 212 recipients comprising 16% females, 76% whites, 7% with prior malignancy, and a median age of 56 years; 865 (2.3% of those with non-missing data) developed malignancy within the first year after transplant. Prior malignancy, older age at heart transplantation, white race, and nonischemic heart failure etiology were the strongest predictors of new malignancy. The optimism-corrected model had modest discrimination (C-statistic: 0.70, 95% CI: 0.69-0.72) and good calibration and performance (calibration slope: 0.96; Cox-Snell R2: 0.063), particularly at lower predicted risk. A nomogram for the practicing clinician was developed. Conclusions: Using selection variables previously linked to cutaneous malignancy, our model was modestly predictive of the development of any malignancy in the first year after heart transplantation. Future research could identify factors that may improve malignancy prediction, including incorporation of time-to-event data.
- Published
- 2022
12. Defensible-space treatment of < 114,000 ha 40 m from high-risk buildings near wildland vegetation could reduce loss in WUI wildfire disasters across Colorado’s 27 million ha
- Author
-
William L. Baker
- Subjects
Ecology ,Geography, Planning and Development ,Nature and Landscape Conservation - Published
- 2022
13. Post Heart Transplantation Outcomes of Patients Supported on Biventricular Mechanical Support
- Author
-
Sabeena Arora, Joseph Radojevic, Ayyaz Ali, Douglas L. Jennings, Jonathan Hammond, Jason Gluck, Abhishek Jaiswal, William L. Baker, Naga Vaishnavi Gadela, A. Scatola, Oisharya Dasgupta, and David A. Baran
- Subjects
Adult ,medicine.medical_specialty ,Time Factors ,medicine.medical_treatment ,Biomedical Engineering ,Biophysics ,Bioengineering ,Biomaterials ,Internal medicine ,Cox proportional hazards regression ,medicine ,Extracorporeal membrane oxygenation ,Humans ,Retrospective Studies ,Heart Failure ,Heart transplantation ,business.industry ,Mortality rate ,General Medicine ,Treatment Outcome ,surgical procedures, operative ,Propensity score weighting ,Cardiology ,Heart Transplantation ,Support system ,Heart-Assist Devices ,business - Abstract
With the implementation of the new heart transplant (HT) allocation system, patients requiring biventricular support systems have the highest priority, a shorter waitlist time, and a higher frequency of HT. However, the short-term and long-term outcomes of such patients are often disputed. Hence, we examined the outcomes of these patients who underwent HT before change in allocation scheme. Additionally, we compared post-HT outcomes of extracorporeal membrane oxygenation (ECMO) with other nondischargeable biventricular (BiVAD) supported patients. We identified adult ECMO or BiVAD supported HT recipients between 2000 and 2018 in the Scientific Registry of Transplant Recipients database. We compared survival with the Kaplan-Meier method. Using overlap propensity score weighting, we constructed Cox proportional hazards regression models to determine the risk-adjusted influence of BiVAD versus ECMO on survival. Of the 730 patients HT recipients; 528 (72.3%) and 202 (27.7%) were bridged with BiVAD and ECMO, respectively. For BiVAD versus ECMO patients, the 30-day, 1-year, 3-year, and 5-year mortality rates were 8.0% versus 14.4%, 16.3% versus 21.3%, 22.4% versus 25.3%, and 26.3% versus 25.7%, respectively. Risk-adjusted post-HT survival of BiVAD and ECMO patients at 30-day (HR 1.24 [95% CI, 0.68-2.27]; P = 0.4863), 1-year (HR 1.29 [95% CI, 0.80-2.09]; P = 0.3009), 3-year (HR 1.27 [95% CI, 0.83-1.94]; P = 0.2801), and 5-year (HR 1.35, 95% CI, 0.90-2.05; P = 0.1501) were similar. Around three-fourth of the ECMO or BiVAD supported patients were alive at 5-years post-HT. The short-term and long-term post-HT survivals of groups were comparable.
- Published
- 2022
14. Effects of Intensive Systolic Blood Pressure Lowering on End-Stage Kidney Disease and Kidney Function Decline in Adults with Type 2 Diabetes Mellitus and Cardiovascular Risk Factors: A Post-hoc Analysis of ACCORD-BP and SPRINT
- Author
-
John Fanikos, William L. Baker, Dave L Dixon, Benjamin W. Van Tassell, and Yahya M.K. Tawfik
- Abstract
Objective: To determine the effects of intensive systolic blood pressure (SBP) lowering on the risk of major adverse kidney outcomes in people with type 2 diabetes mellitus (T2DM) and/or prediabetes and cardiovascular risk factors. Research Design and Methods: This post-hoc ACCORD-BP subgroup analysis included participants in the standard glucose-lowering arm with cardiovascular risk factors required for SPRINT eligibility. Cox proportional hazards regression models compared the hazard for the composite of dialysis, kidney transplant, sustained eGFR 3·3 mg/dL, or a sustained eGFR decline ≥57%, between the intensive ( Results: The study cohort included 1,966 SPRINT-eligible ACCORD-BP participants (40% women) with a mean age of 63 years. The mean SBP achieved after randomization was 120 ± 14 mm Hg and 134 ± 15 mm Hg in the intensive and standard arms, respectively. The kidney composite outcome occurred at a rate of 9.5 events and 7·2 events per 1,000 person-years in the intensive and standard BP arms (HR [95% CI]: 1·35 [0·85-2.14]; P = 0·20). Intensive SBP lowering did not have an effect on the risk of moderately (HR [95% CI]: 0·96 [0·76-1·20]) or severely (HR [95% CI]: 0·92 [0·66-1·28]) increased albuminuria. Including SPRINT participants with prediabetes in the cohort did not change the overall results. Conclusion: This post-hoc subgroup analysis suggests that intensive SBP lowering does not increase the risk of major adverse kidney events in individuals with T2DM and cardiovascular risk factors.
- Published
- 2023
15. Complementary and Alternative Medicines in the Management of Heart Failure: A Scientific Statement From the American Heart Association
- Author
-
Sheryl L, Chow, Biykem, Bozkurt, William L, Baker, Barry E, Bleske, Khadijah, Breathett, Gregg C, Fonarow, Barry, Greenberg, Prateeti, Khazanie, Jacinthe, Leclerc, Alanna A, Morris, Nosheen, Reza, and Clyde W, Yancy
- Subjects
Physiology (medical) ,Cardiology and Cardiovascular Medicine - Abstract
Complementary and alternative medicines (CAM) are commonly used across the world by diverse populations and ethnicities but remain largely unregulated. Although many CAM agents are purported to be efficacious and safe by the public, clinical evidence supporting the use of CAM in heart failure remains limited and controversial. Furthermore, health care professionals rarely inquire or document use of CAM as part of the medical record, and patients infrequently disclose their use without further prompting. The goal of this scientific statement is to summarize published efficacy and safety data for CAM and adjunctive interventional wellness approaches in heart failure. Furthermore, other important considerations such as adverse effects and drug interactions that could influence the safety of patients with heart failure are reviewed and discussed.
- Published
- 2022
16. Comment on 'Tacrolimus in the treatment of childhood nephrotic syndrome: Machine learning detects novel biomarkers and predicts efficacy'
- Author
-
William L. Baker
- Subjects
Pharmacology (medical) - Published
- 2023
17. Effect of a Physician/Pharmacist Collaborative Care Model on Time in Target Range for Systolic Blood Pressure: Post Hoc Analysis of the CAPTION Trial
- Author
-
Barry L. Carter, Leo F. Buckley, Teresa M. Salgado, Benjamin W. Van Tassell, William L. Baker, and Dave L. Dixon
- Subjects
Male ,Healthcare Quality ,medicine.medical_specialty ,physicians ,Systole ,pharmacists ,Pharmacist ,Collaborative Care ,Lower risk ,Target range ,Internal medicine ,Diabetes mellitus ,Post-hoc analysis ,Internal Medicine ,Humans ,Medicine ,Prospective Studies ,Intersectoral Collaboration ,Antihypertensive Agents ,risk ,Aged ,business.industry ,blood pressure ,Original Articles ,Middle Aged ,kidney diseases ,medicine.disease ,Blood pressure ,diabetes mellitus ,Hypertension ,ComputingMethodologies_DOCUMENTANDTEXTPROCESSING ,Educational Status ,Female ,business ,Kidney disease - Abstract
Supplemental Digital Content is available in the text., Longer time in target range (TTR) for systolic blood pressure (SBP) is associated with a lower risk of cardiovascular events. Team-based care improves SBP control but its effect on the consistency of SBP control over time is unknown. This post hoc analysis used data from a cluster-randomized trial of a physician/pharmacist collaborative model that randomized medical offices to either a 9- or 24-month pharmacist intervention or control group. TTR for SBP was calculated using linear interpolation and an SBP range of 110 to 130 mm Hg. TTR is reported as median values and group comparisons assessed using the Kruskal-Wallis test. Of the 625 participants enrolled, 524 had 9-month and 366 had 24-month SBP data. Participants were a median 59 years old, 59% female, and 52% minority. After 24 months, the median TTR for SBP was 31.9% and 29.8% for the 9- and 24-month intervention groups, respectively, compared with 19% in the control group (P=0.0068). This observation persisted in the subgroup of participants with diabetes or chronic kidney disease and minorities. A longer TTR was not associated with an increased risk of adverse drug events. Time to first observed SBP in the target range was shorter in the intervention group compared with control (270 versus 365 days; P=0.0047). A physician/pharmacist collaborative care model achieved longer TTR for SBP compared with control (usual care).
- Published
- 2021
18. Impact of the United Network for Organ Sharing Policy Change on Induction Immunosuppression Practice Patterns and Outcomes in Adult Heart Transplant Recipients
- Author
-
Douglas L. Jennings and William L. Baker
- Subjects
Pharmacology (medical) - Abstract
Induction in heart transplant (HT) patients is non-uniform, with center-specific protocols often dictating use and selection of agents according to patient-specific immunologic risk factors. Data regarding the evolution of induction practice patterns after the 2018 allocation system change are not available. We evaluated whether the new allocation system altered induction practice patternsaffected outcomes in adult HT recipients.We included adults (18+ years of age) who had undergone HT and received induction immunosuppression and were stratified based on surgery being before (January 1st 2015-May 31st 2018) and after (May 1st 2018-December 31st, 2021) the UNOS allocation policy change. Outcomes of 30-day mortality, 1-year mortality, and 1-year graft failure were compared between those transplanted before and after the policy change through risk-adjusted Cox proportional hazards models while drug-treated rejection in the first year was compared using multiple logistic regression.Of the 7,845 HT recipients who received induction therapy, 5,070 (64.6%) were transplanted before and 2,775 (35.4%) after the UNOS policy change. The most used induction agents were basiliximab (56.0%) and thymoglobulin (39.3%), with thymoglobulin used more often in the new (43.1%) than old system (37.2%; p0.001). Among adult HT recipients who received induction, risk-adjusted hazards of 30-day mortality (HR 0.89, 95% CI 0.67-1.18), 1-year mortality (HR 1.00, 95% CI 0.84-1.19), and 1-year graft failure (HR 0.83, 95% CI 0.60-1.15) were similar between the old and new systems. Conversely, the adjusted odds of drug-treated rejection in the first year was lower in the new system (OR 0.52, 95% CI 0.38-0.72).HT recipients in the new allocation system were more likely to receive thymoglobulin induction, which may be associated with a reduced risk of drug-treated rejection.
- Published
- 2022
19. Evaluation of a Flexible Weight and Height Interaction Versus Body Mass Index for Mortality Prediction After Adult Heart Transplant
- Author
-
William L. Baker and Abhishek Jaiswal
- Subjects
Adult ,Transplantation ,Treatment Outcome ,Body Weight ,Heart Transplantation ,Humans ,Body Height ,Body Mass Index - Abstract
Body mass index (calculated as kilograms body weight divided by the square of heightin meters) is a known predictor of mortality after adult heart transplant but has limitations.We investigated whether inclusion of an explicit weight-height interaction effect improves prediction of mortality after heart transplant compared with body mass index.We included a cohort of 46424 adults who had undergone heart transplant as documented in the United Network for Organ Sharing database. Risk-adjusted prediction models for 1-year and 5-year mortality were constructed, one with the flexible weight-height interaction and the other with the body mass index. Overall model performance (R2) and discrimination (the Harrell concordance probability C index and the Somers Dxy rank correlation) were calculated. Compared with the body mass index model, the weight-height model had slightly improved overall performance (R2, 0.316 vs 0.313) and 1-year mortality discrimination (optimism- corrected Harrell C, 0.642 vs 0.640; Somers Dxy, 0.284 vs 0.281). Compared with the body mass index model, the weight-height model had improved overall performance (R2, 0.232 vs 0.224) and similar discrimination (optimism-corrected Harrell C, 0.600 vs 0.599; Somers Dxy, 0.200 vs 0.197) for 5-year mortality.Allowance for a flexible relationship between height and weight did not appreciably improve mortality prediction after heart transplant, versus body mass index, although additionalresearch is warranted.
- Published
- 2022
20. Restoration of forest resilience to fire from old trees is possible across a large Colorado dry‐forest landscape by 2060, but only under the Paris 1.5℃ goal
- Author
-
William L. Baker
- Subjects
0106 biological sciences ,Paris ,Colorado ,010504 meteorology & atmospheric sciences ,Dry forest ,Climate change ,010603 evolutionary biology ,01 natural sciences ,Fires ,Trees ,Environmental Chemistry ,Resilience (network) ,Ecosystem ,0105 earth and related environmental sciences ,General Environmental Science ,Global and Planetary Change ,geography.geographical_feature_category ,Ecology ,Resistance (ecology) ,Logging ,Forestry ,Old-growth forest ,Random forest ,Geography ,Lower cost ,Goals - Abstract
Fire-prone dry forests often face increasing fires from climate change with low resistance and resilience due to logging of large, old fire-resistant trees. Their restoration across large landscapes is constrained by limited mature trees, physical settings, and protection. Active restoration has been costly and shown limited effectiveness, but lower cost passive restoration is less studied. I used GIS and machine learning to see whether passive restoration of old trees could overcome constraints in time, by 2060, across 667,000 ha of montane forests in the San Juan Mountains, Colorado, where temperatures are increasing faster than the global average. Random Forest models of physical locations of reconstructed historical old growth (OG) and relatively frequent fire (RFF) show historical OG with RFF was favored between 6.1 and 7.9℃ annual mean temperatures. Random Forest models projected that similar temperature-suitable locations were moved into the current middle montane ca 2015, and would be extended to just below the upper limit of the montane if the Paris 1.5℃ goal is reached, but beyond if not. US Forest Service common stand exam data, which covered ~15% of the study area and included 26,149 tree ages, show the highest potential for restoring resistance and resilience from old trees is a ≥120-year age class. This class could become a ≥160-year age class, which meets old-growth age criteria, over 81% of the area by ca 2060, nearly fully restoring historical old-growth levels. Half this age class is already protected, and much of the remainder could be retained using evidence-based diameter caps. Datasets thus are sufficient to show that passive restoration of old-tree resistance and resilience to fire is feasible by ca 2060 across a large montane landscape, although contingent on global success in achieving the Paris 1.5℃ goal. Passive restoration may be viable elsewhere.
- Published
- 2021
21. Clinical outcomes of older adults listed for heart transplantation in the <scp>United States</scp>
- Author
-
Naga Vaishnavi Gadela, William L. Baker, Sabeena Arora, Douglas L. Jennings, Jonathan Hammond, Ayyaz Ali, David A. Baran, Kathir Balakumaran, A. Scatola, Jason Gluck, Abhishek Jaiswal, and Joseph Radojevic
- Subjects
Adult ,Male ,medicine.medical_specialty ,Adolescent ,medicine.medical_treatment ,Psychological intervention ,030204 cardiovascular system & hematology ,Lower risk ,Cohort Studies ,Young Adult ,03 medical and health sciences ,0302 clinical medicine ,Internal medicine ,medicine ,Humans ,030212 general & internal medicine ,Contraindication ,Aged ,Retrospective Studies ,Heart transplantation ,business.industry ,Mortality rate ,Age Factors ,Retrospective cohort study ,Middle Aged ,medicine.disease ,United States ,Confidence interval ,Survival Rate ,Treatment Outcome ,Heart failure ,Heart Transplantation ,Female ,Geriatrics and Gerontology ,business - Abstract
OBJECTIVE To examine if older age (>70 years) should be a relative contraindication for heart transplantation, we evaluated the characteristics and outcomes of patients with age ≥70 years listed for heart transplantation; and whether post-transplantation survival was inferior to younger counterparts. DESIGN Retrospective cohort analysis. SETTING The scientific registry of transplant recipients (SRTR). PARTICIPANTS Adults (≥18 years) listed for heart transplantation in the SRTR between 2000 and 2018. INTERVENTIONS Heart transplantation. MEASUREMENTS Characteristics and outcomes were compared for adults ≥70 years and
- Published
- 2021
22. Pre‐transplant amiodarone use does not affect long‐term heart transplant survival
- Author
-
Naga Vaishnavi Gadela, William L. Baker, Amanda Touch, Abhishek Jaiswal, and Douglas L. Jennings
- Subjects
Male ,0301 basic medicine ,medicine.medical_specialty ,medicine.medical_treatment ,030106 microbiology ,Population ,Amiodarone ,030204 cardiovascular system & hematology ,03 medical and health sciences ,0302 clinical medicine ,Internal medicine ,medicine ,Humans ,Pharmacology (medical) ,education ,Heart transplantation ,education.field_of_study ,business.industry ,Mortality rate ,Hazard ratio ,Odds ratio ,Middle Aged ,Confidence interval ,Survival Rate ,Transplantation ,Treatment Outcome ,Heart Transplantation ,Female ,business ,medicine.drug - Abstract
PURPOSE Effect of pre-transplant amiodarone use on post-heart transplant (HT) survival is not well established. We therefore sought to examine the effect of amiodarone use on post-HT survival. METHODS We stratified adults who underwent HT between January 2000 and August 2018 in the Scientific Registry of Transplant Recipients according to pre-transplant amiodarone use and used recipient and donor characteristics to calculate propensity scores. We then used overlap propensity score weighting to construct Cox proportional hazards regression models (adjusted for Index for Mortality Prediction After Cardiac Transplantation [IMPACT] score and donor/recipient predicted heart mass [PHM] ratio) for mortality outcomes. Logistic regression was used to compare the odds of primary graft failure and drug-treated rejection. RESULTS 25,394 adult HT recipients were included; median (inter-quartile range) age was 55 (46, 62) years and 75.5% were men. Compared with nonusers, amiodarone users had a significantly higher prevalence of hypertension (46.7% vs. 50.2%; p
- Published
- 2021
23. Research and scholarly methods: Meta‐analysis
- Author
-
William L. Baker and Diana M Sobieraj
- Subjects
Systematic review ,Computer science ,Meta-analysis ,Pharmaceutical Science ,Pharmacology (medical) ,Pharmacy ,Evidence-based medicine ,Data science - Published
- 2021
24. Research and scholarly methods: Systematic reviews
- Author
-
William L. Baker and Diana M Sobieraj
- Subjects
Systematic review ,Management science ,Meta-analysis ,Pharmaceutical Science ,Pharmacology (medical) ,Pharmacy ,Evidence-based medicine ,Psychology - Published
- 2021
25. PCSK9 inhibitors safely and effectively lower LDL after heart transplantation: a systematic review and meta-analysis
- Author
-
Douglas L. Jennings, Lina Sultan, Jennifer Mingov, Jason Choe, Farhana Latif, Susan Restaino, Kevin Clerkin, Marlena V. Habal, Paolo C. Colombo, Melana Yuzefpulskaya, Gabriel Sayer, Nir Uriel, and William L. Baker
- Subjects
Cardiology and Cardiovascular Medicine - Abstract
Coronary allograft vasculopathy (CAV) continues to afflict a high number of heart transplant (HT) recipients, and elevated LDL is a key risk factor. Many patients cannot tolerate statin medications after HT; however, data for alternative agents remains scarce. To address this key evidence gap, we evaluated the safety and efficacy of the PCSK9i after HT through systematic review and meta-analysis. We searched Medline, Cochrane Central, and Scopus from the earliest date through July 15th, 2021. Citations were included if they were a report of PCSK9i use in adults after HT and reported an outcome of interest. Outcomes included change in LDL cholesterol from baseline, incidence of adverse events, and evidence of CAV. Changes from baseline and outcome incidences were pooled using contemporary random-effects model methodologies. A total of six studies including 97 patients were included. Over a mean follow-up of 13 months (range 3-21), PCSK9i use lowered LDL by 82.61 mg/dL (95% CI - 119.15 to - 46.07; I
- Published
- 2022
26. Myth Busters: Dietary Supplements and COVID-19
- Author
-
Diana M Sobieraj, William L. Baker, and Kathleen Adams
- Subjects
medicine.medical_specialty ,2019-20 coronavirus outbreak ,Coronavirus disease 2019 (COVID-19) ,Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) ,Pneumonia, Viral ,coronavirus ,Pharmacist ,vitamin C ,vitamin D ,dietary supplements ,Betacoronavirus ,03 medical and health sciences ,0302 clinical medicine ,Commentaries ,Pandemic ,Vitamin D and neurology ,Humans ,Medicine ,Pharmacology (medical) ,030212 general & internal medicine ,Misinformation ,Intensive care medicine ,Pandemics ,030304 developmental biology ,0303 health sciences ,SARS-CoV-2 ,business.industry ,zinc ,COVID-19 ,elderberry and silver ,Treatment decision making ,Coronavirus Infections ,business ,Social Media - Abstract
News and social media platforms have implicated dietary supplements in the treatment and prevention of coronavirus disease 2019 (COVID-19). During this pandemic when information quickly evolves in the presence of contradicting messages and misinformation, the role of the pharmacist is essential. Here, we review theoretical mechanisms and evidence related to efficacy and safety of select supplements in the setting of COVID-19, including vitamin C, vitamin D, zinc, elderberry, and silver. Evidence evaluating these supplements in COVID-19 patients is lacking, and providers and patients should not rely on dietary supplements to prevent or treat COVID-19. Rather, reference to evidence-based guidelines should guide treatment decisions.
- Published
- 2020
27. Feeling the burn? A systematic review of burnout in pharmacists
- Author
-
William L. Baker, Brianna M. McQuade, Robert J. DiDomenico, Brent N. Reed, Andrea G. Shipper, and Jennie B. Jarrett
- Subjects
business.industry ,media_common.quotation_subject ,Pharmaceutical Science ,Pharmacy ,Burnout ,Occupational safety and health ,Nursing ,Feeling ,Depersonalization ,medicine ,Pharmacology (medical) ,medicine.symptom ,Psychology ,business ,media_common - Published
- 2020
28. Four‐year incidence of major adverse cardiovascular events in patients with atherosclerosis and atrial fibrillation
- Author
-
Yuani M. Roman, Mark J. Alberts, Benjamin Miao, Adrian V. Hernandez, William L. Baker, and Craig I Coleman
- Subjects
medicine.medical_specialty ,Arterial disease ,Clinical Investigations ,Disease ,030204 cardiovascular system & hematology ,Risk Assessment ,Severity of Illness Index ,Coronary artery disease ,03 medical and health sciences ,0302 clinical medicine ,Risk Factors ,Internal medicine ,Atrial Fibrillation ,medicine ,Health Status Indicators ,Humans ,In patient ,030212 general & internal medicine ,Myocardial infarction ,cardiovascular diseases ,Aged ,business.industry ,Incidence (epidemiology) ,Atrial fibrillation ,General Medicine ,established atherosclerotic disease ,Middle Aged ,medicine.disease ,Atherosclerosis ,Prognosis ,major adverse cardiovascular events ,Cardiology ,Female ,Cardiology and Cardiovascular Medicine ,business ,Mace - Abstract
Background There is a paucity of contemporary data assessing the implications of atrial fibrillation (AF) on major adverse cardiovascular events (MACE) in patients with or at high‐risk for atherosclerotic disease managed in routine practice. Hypothesis We sought to evaluate the 4‐year incidence of MACE in patients with or at risk of atherosclerotic disease in the presence of AF. Methods Using US MarketScan data, we identified AF patients ≥45 years old with billing codes indicating established coronary artery disease, cerebrovascular disease, or peripheral artery disease or the presence of ≥3 risk factors for atherosclerotic disease from January 1, 2013 to December 31, 2013 with a minimum of 4‐years of available follow‐up. We calculated the 4‐year incidence of MACE (cardiovascular death or hospitalization with a primary billing code for myocardial infarction or ischemic stroke). Patients were further stratified by CHA2DS2‐VASc score and oral anticoagulation (OAC) use at baseline. Results We identified 625,951 patients with 4‐years of follow‐up, of which 77,752 (12.4%) had comorbid AF. The median (25%, 75% range) CHA2DS2‐VASc score was 4 (3, 5) and 64% of patients received an OAC at baseline. The incidence of MACE increased as CHA2DS2‐VASc scores increased (P‐interaction
- Published
- 2020
29. Fire Ecology in Rocky Mountain Landscapes
- Author
-
William L. Baker
- Published
- 2012
30. Exploring the frontier of cardiovascular pharmacotherapy
- Author
-
William L. Baker and Cynthia A. Jackevicius
- Subjects
Cardiovascular Diseases ,Humans ,Pharmacology (medical) - Published
- 2021
31. Combination anticoagulant or P2Y12 inhibitor with low-dose aspirin versus low-dose aspirin alone in patients at risk or with documented coronary and/or peripheral artery disease
- Author
-
Brahim Bookhart, Craig I Coleman, Akshay Kharat, and William L. Baker
- Subjects
Adult ,medicine.medical_specialty ,Coronary Artery Disease ,Lower risk ,Coronary artery disease ,Peripheral Arterial Disease ,Rivaroxaban ,Internal medicine ,medicine ,Humans ,cardiovascular diseases ,Myocardial infarction ,Stroke ,Randomized Controlled Trials as Topic ,Aspirin ,business.industry ,Anticoagulants ,General Medicine ,medicine.disease ,Relative risk ,Cardiology ,Drug Therapy, Combination ,business ,Mace ,Platelet Aggregation Inhibitors ,medicine.drug ,Factor Xa Inhibitors - Abstract
OBJECTIVE To perform a systematic literature review and indirect treatment comparison (ITC) to identify, summarize and quantify randomized controlled trial (RCT) evidence evaluating combination anticoagulant or P2Y12 inhibitor with low-dose aspirin versus low-dose aspirin alone for the prevention of atherothrombotic events in patients with stable coronary artery disease (CAD) and/or peripheral artery disease (PAD). METHODS We performed an updated search of CENTRAL, MEDLINE and EMBASE through 23 August 2021 to identify RCTs of adult patients with chronic CAD and/or PAD that compared combination anticoagulant or P2Y12 inhibitor with low-dose aspirin to low-dose aspirin alone. Outcomes of interest included major adverse cardiovascular events (MACEs) including cardiovascular death, stroke, or myocardial infarction (MI) and bleeding. When needed, outcomes were pooled using random-effects models to generate hazard or risk ratios (HRs or RRs) and accompanying 95% confidence intervals (CIs). Adjusted ITCs using subsequent pooled HRs/RRs were then performed. RESULTS Six publications reporting the results of two unique RCTs (one evaluating clopidogrel + aspirin vs. aspirin alone and the other rivaroxaban 2.5 mg twice daily + aspirin vs. aspirin alone) were analyzed. The ITC suggested that rivaroxaban + aspirin was associated with a lower risk of MACEs compared with clopidogrel + aspirin (HR = 0.82, 95% CI = 0.68-0.98). When looking at the individual components of MACE, rivaroxaban + aspirin was associated with lower risk of cardiovascular death (HR = 0.75, 95% CI = 0.57-0.98) and stroke (RR = 0.67, 95 CI = 0.49-0.93) and similar risk of MI (RR = 0.93, 95% CI = 0.70-1.23) versus clopidogrel + aspirin. No evidence of a difference in moderate-to-severe bleeding, fatal bleeding or intracranial hemorrhage (ICH) was seen between the two treatment strategies. CONCLUSIONS Compared to clopidogrel + low-dose aspirin, the use of rivaroxaban 2.5 mg twice daily + low-dose aspirin reduced the risk of MACE, CV death and stroke including ischemic stroke in patients with or at high risk for chronic CAD and/or PAD. These benefits of rivaroxaban 2.5 mg twice daily + low-dose aspirin compared to clopidogrel + low-dose aspirin appear to be achieved without significantly increasing patients' risk of moderate-to-severe bleeding, including ICH or fatal bleeding.
- Published
- 2021
32. Meta-analysis of clinical outcomes of PCSK9 modulators in patients with established ASCVD
- Author
-
Azita Hajhossein Talasaz, Dave L. Dixon, Fawzia Bhatty, Rachel A. Koenig, Benjamin W. Van Tassell, William L. Baker, and Ai-Chen Jane Ho
- Subjects
medicine.medical_specialty ,Unstable angina ,business.industry ,PCSK9 ,medicine.disease ,Atherosclerosis ,Evolocumab ,Treatment Outcome ,Cardiovascular Diseases ,Relative risk ,Internal medicine ,medicine ,Humans ,Pharmacology (medical) ,Proprotein Convertase 9 ,Adverse effect ,business ,Stroke ,Dyslipidemia ,Alirocumab - Abstract
The advent of monoclonal antibodies targeting proprotein convertase subtilisin/kexin type 9 (PCSK9) ushered in a new era of dyslipidemia pharmacotherapy. The first two antibodies targeting PCSK9 (evolocumab, alirocumab) approved by the United States Food and Drug Administration (FDA) provided significant and sustained reductions in atherogenic lipids and a reduced risk of atherosclerotic cardiovascular disease (ASCVD) events. More recently, phase 3 trials of inclisiran-a small interfering RNA-based agent targeting PCSK9-reported similar lipid-lowering effects and preliminary evidence of ASCVD risk reduction, although significant questions remain regarding the extent of benefits across cardiovascular outcomes. We conducted a systematic review and meta-analysis (random-effects model) of the available data on lipid lowering, incidence of atherosclerotic cardiovascular disease (ASCVD) events, and safety of pharmacologic agents targeting PCSK9. A significant and consistent reduction in low-density lipoprotein cholesterol (LDL-C) was observed across all agents (-51% [95% confidence interval {CI}: -61%, -41%]). Despite the impressive reduction in LDL-C, the individual effects on mortality, cardiovascular death, myocardial infarction (MI), and stroke remained nonsignificant. However, a consistent reduction was observed in the composite outcomes of MI, stroke, and cardiovascular death [relative risk {RR} (95% CI): 0.80 (0.73-0.87)] and MI, stroke, unstable angina (requiring revascularization), and cardiovascular death [RR (95% CI): 0.85 (0.74-0.97)]. In terms of safety outcomes, there was no significant difference in severe adverse events, new onset diabetes, neurocognitive disorders, or myalgia. Meanwhile, injection site reaction was more frequent in patients receiving these agents compared to placebo [RR 2.11 (95% CI): 1.26-3.54]. These findings suggest a class effect for favorable lipid changes and a low risk of serious adverse events among pharmacologic agents targeting PCSK9. Although there is compelling evidence that PCSK9-targeting agents reduce the risk of some cardiovascular outcomes, adequately powered studies with longer follow-up may be needed to fully characterize the magnitude of benefits across the cardiovascular spectrum.
- Published
- 2021
33. Abstract 20: Association Of Systolic Blood Pressure Time-in-target Range With Adverse Kidney And Cardiovascular Outcomes In Adults With And Without Diabetes
- Author
-
Adam P. Bress, Leo F. Buckley, Benjamin W. Van Tassell, Omar Alkhezi, Dave L. Dixon, William L. Baker, and Jordana B. Cohen
- Subjects
medicine.medical_specialty ,Kidney ,business.industry ,medicine.disease ,Target range ,medicine.anatomical_structure ,Blood pressure ,Internal medicine ,Diabetes mellitus ,Internal Medicine ,medicine ,Cardiology ,business ,Cardiovascular outcomes - Abstract
Introduction: Hypertension associates with both kidney and cardiovascular (CV) disease risk. Time-in-target range (TTR) associates with CV risk independent of mean SBP and SBP variability. We hypothesized that SBP TTR predicts both adverse kidney and CV outcomes. Methods: ACCORD BP and SPRINT trial participants with >=2 SBP measurements were eligible, except ACCORD standard BP lowering participants due fewer SBP measurements. SBP TTR for months 0-3 was calculated using Rosendaal linear interpolation with target ranges of 110-130 mm Hg and 120-140 mm Hg for participants in the intensive or standard arms, respectively. Adverse kidney outcomes included dialysis, kidney transplant, serum creatinine > 3.3 mg/dL, sustained eGFR of < 15 mL/min per 1.73 m 2 or sustained eGFR decline >40% after month 3. Adverse CV outcomes included myocardial infarction, stroke, heart failure and CV death. Cox proportional hazards regression models were used to estimate the association between TTR and adverse outcomes after demographics, clinical risk factors and baseline SBP adjustment Results: Participants with higher TTR were younger, less likely to have preexisting CV disease and had less albuminuria, higher eGFR and lower baseline SBP. In fully adjusted models accounting for baseline SBP, higher TTR independently associated with a lower risk of adverse kidney and CV outcomes (P-trend < .001 for each). Whereas the relationship between TTR and CV risk increased monotonically with higher TTR, the TTR association with kidney risk was greatest at the extremes of TTR ( Figure ). Conclusions: Further reductions in adverse kidney and CV outcomes may be achievable through sustained SBP control.
- Published
- 2021
34. Heart failure as a substrate and trigger for ventricular tachycardia
- Author
-
Edmond M. Cronin, Chikezie Alvarez, William L. Baker, and Jeffrey Kluger
- Subjects
medicine.medical_specialty ,medicine.medical_treatment ,Cardiac resynchronization therapy ,030204 cardiovascular system & hematology ,Ventricular tachycardia ,Connexins ,Sacubitril ,Sudden cardiac death ,03 medical and health sciences ,0302 clinical medicine ,Risk Factors ,Physiology (medical) ,Internal medicine ,Animals ,Humans ,Medicine ,cardiovascular diseases ,030212 general & internal medicine ,Heart Failure ,Ejection fraction ,Ventricular Remodeling ,business.industry ,medicine.disease ,Defibrillators, Implantable ,Death, Sudden, Cardiac ,Heart failure ,Ventricular assist device ,Ventricular Fibrillation ,Ventricular fibrillation ,Tachycardia, Ventricular ,cardiovascular system ,Cardiology ,Calcium ,Electrophysiologic Techniques, Cardiac ,Cardiology and Cardiovascular Medicine ,business ,Anti-Arrhythmia Agents ,medicine.drug - Abstract
Heart failure (HF) is a major cause of morbidity and mortality with more than 5.1 million individuals affected in the USA. Ventricular tachyarrhythmias (VAs) including ventricular tachycardia and ventricular fibrillation are common in patients with heart failure. The pathophysiology of these mechanisms as well as the contribution of heart failure to the genesis of these arrhythmias is complex and multifaceted. Myocardial hypertrophy and stretch with increased preload and afterload lead to shortening of the action potential at early repolarization and lengthening of the action potential at final repolarization which can result in re-entrant ventricular tachycardia. Myocardial fibrosis and scar can create the substrate for re-entrant ventricular tachycardia. Altered calcium handling in the failing heart can lead to the development of proarrhythmic early and delayed after depolarizations. Various medications used in the treatment of HF such as loop diuretics and angiotensin converting enzyme inhibitors have not demonstrated a reduction in sudden cardiac death (SCD); however, beta-blockers (BB) are effective in reducing mortality and SCD. Amongst patients who have HF with reduced ejection fraction, the angiotensin receptor-neprilysin inhibitor (sacubitril/valsartan) has been shown to reduce cardiovascular mortality, specifically by reducing SCD, as well as death due to worsening HF. Implantable cardioverter-defibrillator (ICD) implantation in HF patients reduces the risk of SCD; however, subsequent mortality is increased in those who receive ICD shocks. Prophylactic ICD implantation reduces death from arrhythmia but does not reduce overall mortality during the acute post-myocardial infarction (MI) period (less than 40 days), for those with reduced ejection fraction and impaired autonomic dysfunction. Furthermore, although death from arrhythmias is reduced, this is offset by an increase in the mortality from non-arrhythmic causes. This article provides a review of the aforementioned mechanisms of arrhythmogenesis in heart failure; the role and impact of HF therapy such as cardiac resynchronization therapy (CRT), including the role, if any, of CRT-P and CRT-D in preventing VAs; the utility of both non-invasive parameters as well as multiple implant-based parameters for telemonitoring in HF; and the effect of left ventricular assist device implantation on VAs.
- Published
- 2019
35. Effectiveness and safety of rivaroxaban vs. warfarin in patients with non-valvular atrial fibrillation and coronary or peripheral artery disease
- Author
-
Daniel Eriksson, Mark J. Alberts, Anna Katharina Meinecke, Thomas J. Bunz, Craig I Coleman, Brandon K. Martinez, and William L. Baker
- Subjects
Male ,medicine.medical_specialty ,Time Factors ,Databases, Factual ,Administration, Oral ,Hemorrhage ,Comorbidity ,Coronary Artery Disease ,Risk Assessment ,Coronary artery disease ,Peripheral Arterial Disease ,Rivaroxaban ,Risk Factors ,Internal medicine ,Atrial Fibrillation ,medicine ,Humans ,Pharmacology (medical) ,Myocardial infarction ,Aged ,Retrospective Studies ,Aged, 80 and over ,Proportional hazards model ,business.industry ,Hazard ratio ,Warfarin ,Anticoagulants ,Thrombosis ,Atrial fibrillation ,Middle Aged ,medicine.disease ,United States ,Treatment Outcome ,Cardiology ,Female ,Cardiology and Cardiovascular Medicine ,business ,Factor Xa Inhibitors ,medicine.drug - Abstract
Aims There are scarce data evaluating the effectiveness and safety of rivaroxaban vs. warfarin in non-valvular atrial fibrillation (NVAF) patients with concomitant coronary artery disease (CAD) and/or peripheral artery disease (PAD) treated in routine practice. Methods and results Using MarketScan data from January 2012 to December 2017, we identified oral anticoagulant (OAC)-naïve NVAF patients receiving rivaroxaban (15–20 mg once daily) or warfarin, with comorbid CAD and/or PAD and ≥12 months of insurance coverage before OAC initiation. Differences in baseline covariates between cohorts were adjusted using inverse probability-of-treatment weights based on propensity scores (standardized differences Conclusion Among patients with NVAF and comorbid CAD and/or PAD, rivaroxaban use was associated with a reduced risk of MTVEs vs. warfarin, without significantly increasing major bleeding risk.
- Published
- 2019
36. Rivaroxaban Versus Warfarin in Patients With Nonvalvular Atrial Fibrillation and Severe Kidney Disease or Undergoing Hemodialysis
- Author
-
Thomas J. Bunz, Daniel Eriksson, Reinhold Kreutz, Nitesh Sood, Anna-Katharina Meinecke, Craig I Coleman, and William L. Baker
- Subjects
Adult ,Male ,medicine.medical_specialty ,Adolescent ,Databases, Factual ,medicine.medical_treatment ,Embolism ,Administration, Oral ,Hemorrhage ,030204 cardiovascular system & hematology ,law.invention ,Young Adult ,03 medical and health sciences ,0302 clinical medicine ,Rivaroxaban ,Randomized controlled trial ,Renal Dialysis ,law ,Internal medicine ,Atrial Fibrillation ,medicine ,Humans ,030212 general & internal medicine ,Renal Insufficiency, Chronic ,Stage (cooking) ,Aged ,Retrospective Studies ,Aged, 80 and over ,business.industry ,Warfarin ,Anticoagulants ,Atrial fibrillation ,General Medicine ,Middle Aged ,medicine.disease ,United States ,Stroke ,Propensity score matching ,Female ,Hemodialysis ,business ,Factor Xa Inhibitors ,Kidney disease ,medicine.drug - Abstract
Patients with nonvalvular atrial fibrillation with stage 4 or 5 chronic kidney disease or undergoing hemodialysis were excluded from phase III randomized trials of nonvitamin K antagonist oral anticoagulants (NOACs). We sought to evaluate the effectiveness and safety of rivaroxaban compared with warfarin in patients with nonvalvular atrial fibrillation and stage 4 or 5 chronic kidney disease or undergoing hemodialysis in routine practice.Using MarketScan data from January 2012 to December 2017, we identified patients on oral anticoagulant (OAC) with naïve nonvalvular atrial fibrillation and stage 4 or 5 chronic kidney disease or undergoing hemodialysis and with ≥12 months of insurance coverage before OAC initiation. Differences in baseline covariates between the rivaroxaban and warfarin cohorts were adjusted using inverse probability-of-treatment weights based on propensity scores calculated using generalized boosted models and 10,000 regression trees (absolute standardized differences0.1 achieved for all covariates after adjustment). Patients were followed until a stroke/systemic embolism or major bleeding event, OAC discontinuation/switch, insurance disenrollment, or end of data availability. Hazard ratios (HRs) and 95% confidence intervals (CIs) comparing the OAC cohorts were calculated using Cox regression.We identified 1896 rivaroxaban (38.7% received a dose20 mg/d) and 4848 warfarin users. Eighty-eight percent of included patients had stage 5 chronic kidney disease or were undergoing hemodialysis. Rivaroxaban did not significantly reduce stroke or systemic embolism (HR = 0.55, 95% CI = 0.27-1.10) or ischemic stroke (HR = 0.67, 95% CI = 0.30-1.50) alone, but it was associated with a significant 32% (95% CI = 1-53%) reduction in major bleeding risk compared with warfarin.Among patients with nonvalvular atrial fibrillation and stage 4 or 5 chronic kidney disease or undergoing hemodialysis, rivaroxaban appears associated with significantly less major bleeding compared to warfarin.
- Published
- 2019
37. Impact of angiotensin‐converting enzyme inhibitors or angiotensin receptor blockers on renal and mortality outcomes in people with Type 2 diabetes and proteinuria
- Author
-
Brahim Bookhart, Akshay Kharat, William L. Baker, Erin R. Weeda, and Craig I Coleman
- Subjects
Male ,medicine.medical_specialty ,Angiotensin receptor ,Endocrinology, Diabetes and Metabolism ,Angiotensin-Converting Enzyme Inhibitors ,030209 endocrinology & metabolism ,Type 2 diabetes ,Kidney ,Gastroenterology ,Nephropathy ,Angiotensin Receptor Antagonists ,03 medical and health sciences ,chemistry.chemical_compound ,0302 clinical medicine ,Endocrinology ,Internal medicine ,Internal Medicine ,Albuminuria ,Humans ,Medicine ,030212 general & internal medicine ,Aged ,Randomized Controlled Trials as Topic ,Creatinine ,Proteinuria ,biology ,business.industry ,Angiotensin-converting enzyme ,Middle Aged ,medicine.disease ,Diabetes Mellitus, Type 2 ,chemistry ,Enzyme inhibitor ,Relative risk ,biology.protein ,Kidney Failure, Chronic ,Female ,medicine.symptom ,business - Abstract
Aim To assess the impact of angiotensin-converting enzyme inhibitors and angiotensin receptor blockers on renal and mortality outcomes in people with Type 2 diabetes and proteinuria. Methods A literature search up to 6 June 2019 was performed. We included randomized trials of ≥100 participants with Type 2 diabetes and micro- or macroalbuminuria comparing an angiotensin-converting enzyme inhibitor or angiotensin receptor blocker with placebo ± background anti-hypertensives or non-angiotensin-converting enzyme inhibitor or angiotensin receptor blocker-containing anti-hypertensives, which included follow-up of ≥12 months. Endpoints included doubling of serum creatinine, end-stage renal disease, all-cause and cardiovascular mortality and progression and regression of proteinuria. A Hartung-Knapp random-effects model (between-study variance calculated using the Paule-Mandel estimator) producing a risk ratio with 95% confidence interval was employed. Results The use of an angiotensin-converting enzyme inhibitor or angiotensin receptor blocker was not associated with a significant reduction in the risk of a doubling in serum creatinine (n = 7 trials, RR = 0.77, 95% CI = 0.50-1.21). Angiotensin-converting enzyme inhibitors or angiotensin receptor blockers reduced the risk of progressing to end-stage renal disease (n = 8, RR = 0.79, 95% CI = 0.75-0.83). No difference in all-cause (n = 11, RR = 0.98, 95% CI = 0.89-1.08) or cardiovascular mortality (n = 6 trials, RR = 1.08, 95% CI = 0.92-1.28), nor the composite outcome of doubling in serum creatinine, end-stage renal disease or mortality (n = 3 trials, RR = 0.87, 95% CI = 0.72-1.06), was observed. Progression of proteinuria was decreased with angiotensin-converting enzyme inhibitor or angiotensin receptor blocker use vs. control (n = 10, RR = 0.49, 95% CI = 0.33-0.74). Regression of proteinuria was not improved with an angiotensin-converting enzyme inhibitor or angiotensin receptor blocker (n = 11, RR = 1.55, 95% CI = 0.93-2.58). Conclusion Angiotensin-converting enzyme inhibitors and angiotensin receptor blockers may reduce the risk of end-stage renal disease and slow the progression of nephropathy, but they do not appear to decrease all-cause or cardiovascular mortality in people with Type 2 diabetes and proteinuria.
- Published
- 2019
38. Cryoballoon Ablation for the Treatment of Atrial Fibrillation: A Meta-analysis
- Author
-
Krunalkumar Patel, Nirav Patel, Nabil El-Sherif, William L. Baker, Amgad N. Makaryus, and Abhishek Shenoy
- Subjects
Male ,medicine.medical_specialty ,Radiofrequency ablation ,Subgroup analysis ,030204 cardiovascular system & hematology ,Pericardial effusion ,silent cerebral microemboli ,Cryosurgery ,Article ,law.invention ,03 medical and health sciences ,cryoballoon ablation ,0302 clinical medicine ,law ,phrenic nerve palsy ,Medicine ,Fluoroscopy ,Humans ,030212 general & internal medicine ,Cryoballoon ablation ,Phrenic Nerve Palsy ,medicine.diagnostic_test ,business.industry ,Atrial fibrillation ,General Medicine ,Middle Aged ,medicine.disease ,pericardial effusion ,Surgery ,meta-analysis ,Treatment Outcome ,Meta-analysis ,Catheter Ablation ,Female ,radiofrequency ablation ,Cardiology and Cardiovascular Medicine ,business - Abstract
Background: Ablation therapy is the treatment of choice in antiarrhythmic drugrefractory atrial fibrillation (AF). It is performed by either cryoballoon ablation (CBA) or radiofrequency ablation. CBA is gaining popularity due to simplicity with similar efficacy and complication rate compared with RFA. In this meta-analysis, we compare the recurrence rate of AF and the complications from CBA versus RFA for the treatment of AF. Methods: We systematically searched PubMed for the articles that compared the outcome of interest. The primary outcome was to compare the recurrence rate of AF between CBA and RFA. We also included subgroup analysis with complications of pericardial effusion, phrenic nerve palsy and cerebral microemboli following ablation therapy. Results: A total of 24 studies with 3527 patients met our predefined inclusion criteria. Recurrence of AF after CBA or RFA was similar in both groups (RR: 0.84; 95% CI: 0.65, 1.07; I2=48%, Cochrane p=0.16). In subgroup analysis, heterogeneity was less in paroxysmal AF (I2=0%, Cochrane p=0.46) compared to mixed AF (I2=72%, Cochrane p=0.003). Procedure and fluoroscopy time was less by 26.37 and 5.94 minutes respectively in CBA compared to RFA. Complications, pericardial effusion, and silent cerebral microemboli, were not different between the two groups, however, phrenic nerve palsy was exclusively present only in CBA group. Conclusion: This study confirms that the effectiveness of CBA is similar to RFA in the treatment of AF with the added advantages of shorter procedure and fluoroscopy times.
- Published
- 2019
39. Short‐term impact of Altmetric Attention Scores on citation counts in selected major pharmacy journals
- Author
-
Dave L. Dixon and William L. Baker
- Subjects
Gerontology ,business.industry ,Pharmaceutical Science ,Pharmacology (medical) ,Pharmacy ,Bibliometrics ,business ,Citation ,Psychology ,Term (time) - Published
- 2019
40. Adverse Effects of Pharmacologic Treatments of Major Depression in Older Adults
- Author
-
David C. Steffens, Karina M. Berg, William L. Baker, Adrian V. Hernandez, Diana M Sobieraj, Joseph S. Ross, Brandon K. Martinez, and Craig I Coleman
- Subjects
Male ,medicine.medical_specialty ,Drug-Related Side Effects and Adverse Reactions ,Population ,Mirtazapine ,Placebo ,law.invention ,03 medical and health sciences ,chemistry.chemical_compound ,0302 clinical medicine ,Randomized controlled trial ,law ,Internal medicine ,mental disorders ,Vilazodone ,medicine ,Humans ,030212 general & internal medicine ,Serotonin and Noradrenaline Reuptake Inhibitors ,education ,Adverse effect ,Aged ,Randomized Controlled Trials as Topic ,Aged, 80 and over ,Depressive Disorder, Major ,education.field_of_study ,business.industry ,Trazodone ,Antidepressants ,Antidepressive Agents ,Observational Studies as Topic ,chemistry ,Adverse events ,Older adults ,Antidepressant ,Female ,Geriatrics and Gerontology ,business ,Selective Serotonin Reuptake Inhibitors ,030217 neurology & neurosurgery ,medicine.drug - Abstract
OBJECTIVES To assess adverse effects of pharmacologic antidepressants for treatment of major depressive disorder (MDD) in adults 65 years of age or older. DESIGN Systematic review and meta-analysis. SETTING Specialist or generalist outpatient setting, rehabilitation facility, and nursing facilities. PARTICIPANTS Persons 65 years and older with MDD. INTERVENTION Selective serotonin reuptake inhibitors (SSRIs), serotonin norepinephrine reuptake inhibitors (SNRIs), bupropion, mirtazapine, trazodone, vilazodone, or vortioxetine compared with another antidepressant, placebo, or nonpharmacologic therapy. MEASUREMENTS Adverse events, arrhythmias, cognitive impairment, falls, fractures, hospitalization, mortality, QTc prolongation, serious adverse events, and withdrawals due to adverse events. RESULTS Nineteen randomized controlled trials and two observational studies were included. Most studies evaluated treatment of the acute phase (
- Published
- 2019
41. Association Between Time‐in‐Therapeutic Tacrolimus Range and Early Rejection After Heart Transplant
- Author
-
Nirav Patel, Daniel Fusco, Andrew Feingold, Jonathan Hammond, Samantha N. Steiger, Heather L. Kutzler, Lynn O'Bara, James E. Dougherty, Joseph Radojevic, Konstadina Darsaklis, William L. Baker, Jason Gluck, and Spencer T. Martin
- Subjects
Graft Rejection ,Male ,0301 basic medicine ,medicine.medical_specialty ,Percentile ,medicine.medical_treatment ,030106 microbiology ,Time in therapeutic range ,030204 cardiovascular system & hematology ,Gastroenterology ,Drug Administration Schedule ,Tacrolimus ,Cohort Studies ,03 medical and health sciences ,0302 clinical medicine ,Internal medicine ,medicine ,Humans ,Pharmacology (medical) ,In patient ,Retrospective Studies ,Heart transplantation ,business.industry ,Histology ,Immunosuppression ,Retrospective cohort study ,Middle Aged ,Treatment Outcome ,surgical procedures, operative ,Heart Transplantation ,Female ,business ,Immunosuppressive Agents - Abstract
Background Historically, there is perceived pressure to achieve therapeutic levels of tacrolimus quickly after heart transplant (HT). We evaluated the association between time within therapeutic tacrolimus range and time to therapeutic trough and rejection in the 30 days following HT. Methods This is a single-center retrospective cohort study of consecutive adult HT patients receiving immunosuppression. Goal trough tacrolimus levels were 10-15 ng/ml. Surveillance endomyocardial biopsies were performed weekly for 4 weeks. Outcomes included the effect of time to and time-in-therapeutic tacrolimus range (Rosendaal method) on 30-day clinical rejection, 1R/1B, and 2R or higher histologic occurrences. Results We reviewed 67 HT patients (median age 58.8 yrs). For clinical rejection versus no-rejection groups, the median (25th, 75th percentile) time to therapeutic tacrolimus levels was 9.5 (8, 12.3) days versus 9.0 (7, 13) days (p=0.623). The median time-in-therapeutic tacrolimus range was 34.1% (23.2, 42.2) versus 36.2% (19.9, 51.2), respectively (p=0.512). Similarly, we observed no significant differences in time to and time-in-therapeutic tacrolimus range in patients who developed grade 1R/1B (p=0.650 and p=0.725) or grade 2R or higher histology (p=0.632 and p=0.933). Conclusions Our small single-center analysis suggests that neither time to nor time in therapeutic tacrolimus range predicted acute rejection within 30 days of HT.
- Published
- 2019
42. Impact of Prolonged Anticoagulation with Rivaroxaban on Provoked Venous Thromboembolism Recurrence: IMPROVE-VTE
- Author
-
Jan Beyer-Westendorf, William L. Baker, Alexander G.G. Turpie, Craig I Coleman, and T J Bunz
- Subjects
Male ,medicine.medical_specialty ,030204 cardiovascular system & hematology ,03 medical and health sciences ,0302 clinical medicine ,Rivaroxaban ,Recurrence ,Internal medicine ,Secondary Prevention ,Humans ,Medicine ,030212 general & internal medicine ,Risk factor ,Aged ,Retrospective Studies ,Aspirin ,business.industry ,Venous Thromboembolism ,General Medicine ,Emergency department ,Middle Aged ,Discontinuation ,Propensity score matching ,Female ,Diagnosis code ,business ,Venous thromboembolism ,Factor Xa Inhibitors ,medicine.drug - Abstract
We sought to evaluate the real-world effectiveness and safety of prolonged anticoagulation with rivaroxaban following a provoked venous thromboembolism.Using US MarketScan claims from November 2012 to March 2017, we identified adults with ≥1 primary hospitalization or emergency department diagnosis code for venous thromboembolism, a provoking (major or minor, persistent or transient) risk factor, at least 3 months of continuous rivaroxaban treatment, and ≥12 months of continuous insurance benefits prior to their qualifying venous thromboembolism. Patients were categorized as either continuing rivaroxaban or discontinuing anticoagulation (no anticoagulation or nonaspirin antiplatelet agents but may have received aspirin) after the initial 3 months of rivaroxaban treatment (index date). Differences in baseline covariates between cohorts were adjusted for using inverse probability-of-treatment weights based on propensity scores (absolute standardized differences0.1 achieved for all covariates after adjustment). Twelve month incidences of recurrent venous thromboembolism or major bleeding were compared between cohorts using Cox regression (according to an intention-to-treat methodology) and reported as hazard ratios (HRs) with 95% confidence intervals (CIs).Among patients experiencing a provoked venous thromboembolism and treated with rivaroxaban for the first 3 months (N=4,990), continued rivaroxaban use beyond 3 months (median [25%, 75% range duration of additional rivaroxaban use = 3 [2, 5] months) was associated with a 44% (95% CI of 9%-66%) lower hazard of recurrent venous thromboembolism without altering major bleeding risk [HR of 0.87, 95% CI of 0.51-1.49] versus anticoagulation discontinuation (with or without aspirin use).Our study suggests continuing rivaroxaban after the initial 3 month period was associated with a decreased risk of recurrent venous thromboembolism. The observed reduction in recurrent venous thromboembolism with prolonged rivaroxaban use was not associated with a significant change in major bleeding risk.
- Published
- 2019
43. Air Medical Transport of Patients Diagnosed With Confirmed Coronavirus Disease 2019 Infection Undergoing Extracorporeal Membrane Oxygenation: A Case Review and Lessons Learned
- Author
-
Kathleen Race, Heather Standish, William Hantzos, Jason Gluck, Ethan Kurtzman, John R Spencer, Lauri Bolton, William L. Baker, Thomas Bascetta, and Patricia Margarido
- Subjects
medicine.medical_specialty ,2019-20 coronavirus outbreak ,Air transport ,Coronavirus disease 2019 (COVID-19) ,business.industry ,medicine.medical_treatment ,Specialty ,Emergency Nursing ,Case review ,Health care delivery ,Pandemic ,Emergency ,medicine ,Extracorporeal membrane oxygenation ,Emergency Medicine ,Intensive care medicine ,business - Abstract
The coronavirus disease 2019 pandemic disrupted health care delivery in every respect, including critical care resources and the transport of patients requiring extracorporeal membrane oxygenation. Innovative solutions allowing for safe helicopter air transport of these critical patients is needed because extracorporeal membrane oxygenation resources are only available in specialty centers. We present a case demonstrating the interfacility collaboration of care for a patient with coronavirus disease 2019 infection and the lessons learned from the air transport. Careful planning, coordination, communication, and teamwork contributed to the safe transport of this patient and several others subsequently.
- Published
- 2021
- Full Text
- View/download PDF
44. Long-term Association of Altmetric Attention Scores With Citations in Selected Major Pharmacy Journals
- Author
-
William L. Baker and Dave L. Dixon
- Subjects
Percentile ,business.industry ,Pharmacy ,General Medicine ,Bibliometrics ,Education ,Education, Pharmacy ,Brief ,Medicine ,Humans ,General Pharmacology, Toxicology and Pharmaceutics ,Correlation test ,Journal Impact Factor ,Periodicals as Topic ,Citation ,business ,Association (psychology) ,Social Media ,Demography - Abstract
Objective. To determine the long-term change in the Altmetric Attention Score (AAS), and its components, as well as the impact of higher AAS on citation count for articles published in major pharmacy journals. Methods. This study evaluated articles from pharmacy journals ranked in the top 10% according to their AAS in the year 2017. Correlation between the AAS and number of citations (through November 2020) was assessed using the Spearman’s correlation test. A Kruskal-Wallis 1-way analysis of variance was used to compare the AAS across journals. Results. The median 3-year AAS and citation count per article was 20 (25th, 75th percentile = 15, 28) and 11 (6, 18), respectively. Between November 2018 and November 2020, there was no significant change in the median AAS for the 137 included articles. The only change in the AAS components was an increase in the number of Mendeley readers (22 [13, 34]). The median number of citations per article also increased (8 [4, 14]). We found a significant association between the 3-year AAS and the 3-year number of citations (adjR2=0.06). The 3-year number of Mendeley readers was associated with an increase in the 3-year number of citations (adjR2=0.36). The mean 3-year AAS was highest with articles published in the Journal of the American Pharmacists Association, while the mean 3-year number of citations was highest for articles published in Pharmacotherapy. Conclusion. Higher AAS scores appear to be associated with the number of citations for articles published in major pharmacy journals within three years of publication.
- Published
- 2021
45. Influence of digoxin on mortality in patients with atrial fibrillation: Overview of systematic reviews
- Author
-
Robert J. DiDomenico, William L. Baker, and Diana M Sobieraj
- Subjects
0301 basic medicine ,medicine.medical_specialty ,Digoxin ,030106 microbiology ,MEDLINE ,030204 cardiovascular system & hematology ,law.invention ,03 medical and health sciences ,0302 clinical medicine ,Randomized controlled trial ,law ,Atrial Fibrillation ,medicine ,Humans ,Pharmacology (medical) ,Randomized Controlled Trials as Topic ,business.industry ,Atrial fibrillation ,medicine.disease ,Systematic review ,Heart failure ,Emergency medicine ,business ,Atrial flutter ,medicine.drug ,Cohort study ,Systematic Reviews as Topic - Abstract
Once a routine part of atrial fibrillation (AF) management, digoxin use has declined. Likely hastening this decline are findings from several studies and systematic reviews identifying a potential association between digoxin use and all-cause mortality in AF populations. However, inconsistency exists within some of these studies potentially leading to confusion among clinicians. To critically evaluate the current literature to contextualize the associations between digoxin and mortality risk in patients with AF by performing an overview of systematic reviews. We searched MEDLINE, Cochrane Central Database of Systematic Reviews, and SCOPUS from their earliest date through October 12, 2020, to identify systematic reviews (SRs) that included studies enrolling patients with AF or atrial flutter and evaluated the association between digoxin use and all-cause mortality. We used the AMSTAR 2 tool to assess the risk of bias for each included SR. Results from reviews are qualitatively synthesized. Our search identified 10 SRs that met our inclusion criteria. Of the 41 unique AF studies included in these SRs, 41% were cohort studies, 29% were post hoc analyses of randomized controlled trials (RCTs), 15% were RCTs, and 15% were registry studies. Based on our AMSTAR 2 assessment, the overall confidence in the results of the 10 reviews was rated as "moderate" in three SRs, "low" in three SRs, and "critically low" in the rest. Except for one review, each included SR shows that digoxin use in AF is associated with a 15 to 38% higher risk of all-cause mortality. This association may be greater when AF-only populations are considered compared with a mix of AF and heart failure populations. Serum digoxin concentration (SDC) data were infrequently considered, but available data suggested a greater association between increasing SDC and all-cause mortality. This overview of reviews found general consistency regarding the association between digoxin use and higher all-cause mortality in AF populations. However, heterogeneity exists among and between SRs and an unmet need exists for additional study in a RCT setting with close monitoring and reporting of SDC to better inform clinical practice.
- Published
- 2021
46. A Bibliometric Analysis of Peer-Reviewed Journal Publications of Pharmacy Practice Department Chairs
- Author
-
Diana M Sobieraj, Rachel A. Koenig, Dave L. Dixon, William L. Baker, Madeleine Wagner, and Roy E. Brown
- Subjects
Male ,medicine.medical_specialty ,education ,Scopus ,Pharmacy ,Bibliometrics ,Education ,medicine ,Humans ,General Pharmacology, Toxicology and Pharmaceutics ,business.industry ,Research ,Public institution ,General Medicine ,Faculty ,Scholarship ,Ranking ,Education, Pharmacy ,Schools, Pharmacy ,Family medicine ,Pharmacy practice ,Female ,Psychology ,business - Abstract
Objective. To perform a bibliometric analysis of pharmacy practice department chairs at US schools and colleges of pharmacy to determine factors associated with their level of scholarly productivity. Methods. Scopus was searched for all publications by pharmacy practice chairs from all pharmacy schools through August 11, 2020. Publication metrics (total number of publications and citations and the Hirsch-index (h-index), and year of first publication), as well as characteristics of the individual chair and institution were collected. Characteristics were compared across groups. A generalized linear model was used to determine the correlation between the total number of publications and h-index to school ranking by US News & World Report (USNWR). Results. One hundred forty-one pharmacy practice chairs were identified. The majority were male and at the rank of professor, with a similar proportion from public and private institutions. The median total number of publications and citations was 19 and 247, respectively, with a median h-index of eight. Compared with female chairs, male chairs had a higher median total of publications and citations and a higher h-index. Chairs at public institutions had a higher median total of publications and citations and a higher publication rate, h-index, and m quotient. The USNWR ranking for the school was significantly correlated with total publications and the h-index. Conclusion. Pharmacy practice chairs vary significantly in their scholarship productivity, although those at institutions with a larger emphasis on research were more prolific. Observed differences in the publication metrics of male and female chairs warrants further study to determine possible explanations for this finding and its potential impact.
- Published
- 2020
47. Abstract 13537: Similar Long-term Survival in Patients Bridged With Biventricular Devices or Extracorporeal Membrane Oxygenation in the Contemporary Era of Heart Transplantation
- Author
-
Jonathan Hammond, Joseph Radojevic, Jason Gluck, Ayesha Azmeen, Sabeena Arora, Douglas L. Jennings, Abhishek Jaiswal, Ayyaz Ali, William L. Baker, and Naga Vaishnavi Gadela
- Subjects
Heart transplantation ,medicine.medical_specialty ,business.industry ,medicine.medical_treatment ,Transplantation ,surgical procedures, operative ,Physiology (medical) ,Internal medicine ,Long term survival ,Cardiology ,Extracorporeal membrane oxygenation ,Medicine ,In patient ,Cardiology and Cardiovascular Medicine ,business - Abstract
Introduction: A recent trend favoring donor allocation to sicker patients has led to a rise in the number of patients undergoing heart transplantation (HT) on ECMO or non-dischargeable biventricular mechanical circulatory devices (BiVAD). While suboptimal short-term outcomes of such patients have raised concerns, long-term outcomes are unknown. We examined long-term survival in patients bridged with BiVAD or ECMO in the contemporary era before the donor allocation policy changed. Methods: We identified the adult patients listed for HT and bridged with ECMO or BiVAD between 2000 and 2018 in the Scientific Registry of Transplant Recipients. We compared 3- and 5-year survival with the Kaplan-Meier method. Using overlap propensity score weighting, we constructed doubly-robust Cox proportional hazards regression models to determine the risk-adjusted influence of support type on survival. Results: Of the 1495 listings; 868 (58.1%) were bridged with BiVAD and 627 (41.9%) with ECMO. 730 underwent successful HT; 528 (72.3%) and 202 (27.7%) were bridged with BiVAD and ECMO, respectively. The ECMO group had higher prevalence of pre-transplant ventilator support (30.7% vs 6.3%, p Conclusions: A minority of patients on BiVAD and ECMO underwent HT suggesting high complication and waitlist mortality rates. Besides, the transplantation rate was disproportionately lower in patients on ECMO compared to BiVAD support. Patients with heart failure bridged with BiVAD or ECMO experienced similar long-term outcomes despite worse clinical and hemodynamic profile of patients in the ECMO group.
- Published
- 2020
48. Quality evaluation of case series describing four-factor prothrombin complex concentrate in oral factor Xa inhibitor-associated bleeding: a systematic review
- Author
-
Olivia S. Costa, Craig I Coleman, Yuani Roman-Morillo, William L. Baker, Kelly McNeil-Posey, C Michael White, and Belinda Lovelace
- Subjects
medicine.medical_specialty ,medicine.drug_mechanism_of_action ,medicine.drug_class ,Factor Xa Inhibitor ,MEDLINE ,Internal medicine ,medicine ,Humans ,Prospective Studies ,anticoagulation ,Series (stratigraphy) ,business.industry ,neurology ,Anticoagulant ,Anticoagulants ,General Medicine ,Bleed ,medicine.disease ,Thrombosis ,Prothrombin complex concentrate ,Blood Coagulation Factors ,cardiology ,haematology ,Medicine ,business ,Major bleeding ,Factor Xa Inhibitors ,Haematology (Incl Blood Transfusion) ,medicine.drug - Abstract
IntroductionAs oral factor Xa (oFXa) inhibitor use has increased, so has publication of case series describing related bleeding managed with four-factor prothrombin complex concentrate (4F-PCC).ObjectiveThis review aimed to identify case series describing 4F-PCC management of oFXa inhibitor-related bleeding and appraise their methodological and reporting quality.DesignWe searched Medline and EMBASE (1 January 2011 to 31 May 2020) to identify series of ≥10 patients with oFXa inhibitor-related major bleeding given off-label 4F-PCC. Case series were evaluated using a validated tool adapted for this topic. The tool addressed patient selection, bleed/outcome ascertainment, causal/temporal association and reporting.ResultsWe identified 14 case series. None had ≥100 patients (range=13–84), three were prospective, two detailed appropriate inclusion criteria and four noted consecutive inclusion. While 12 series provided clear/appropriate methods for diagnosis of intracranial haemorrhage (ICH); none did so for extracranial bleeds and it was not clear whether bleeding was adjudicated in any. Haemostatic effectiveness, thrombosis and mortality were together evaluated in 12 series, but only seven used validated methods to evaluate/diagnosis haemostasis in ICH, six in gastrointestinal bleeds, five in other bleeds and three in thrombosis. Independent adjudication of haemostasis (n=1) and thrombosis (n=2) was infrequent. Thirty-day follow-up for mortality and thrombosis was noted in five and seven series. Anticoagulation measurement/levels in at least some patients were conveyed in three series. Few series provided data on anticoagulant agent/dose (n=4), time from anticoagulant (n=4), time-to-reversal (n=7), baseline (n=7) or change (n=0) in neurologic function.ConclusionsAlthough many case series describe off-label use of 4F-PCC for oFXa inhibitor-related bleeding, methodological flaws and/or poor reporting necessitates caution in interpretation.
- Published
- 2020
49. Should Patients with Severe Obesity Receive Veno-venous Extra Corporeal Membrane Oxygenation Support in Patients with Acute Respiratory Distress Syndrome? A Single-center Experience
- Author
-
Ethan Kurtzman, Colleen Drake, William L. Baker, David Underhill, Ayesha Azmeen, Naga Vaishnavi Gadela, Abhishek Jaiswal, and Jason Gluck
- Subjects
medicine.medical_specialty ,ARDS ,business.industry ,Disease ,Oxygenation ,Acute respiratory distress ,medicine.disease ,Single Center ,Logistic regression ,surgical procedures, operative ,Internal medicine ,medicine ,In patient ,business ,Cardiology and Cardiovascular Medicine ,Body mass index - Abstract
Background Severe obesity (Body Mass Index (BMI) ≥40 kg/m2) is associated with a higher risk of developing severe symptoms and complications of coronavirus disease 19 (COVID-19), independent of other illnesses. Despite this, patients with severe obesity are less likely to receive Veno-Venous Extra Corporeal Membrane Oxygenation (VV-ECMO) support for severe Acute Respiratory Distress Syndrome (ARDS). Given this paradox, we examined the impact of severe obesity on outcomes of adult patients who underwent VV-ECMO implantation for ARDS at our center. Methods We reviewed our ECMO database from May 2013 through May 2020. Adults, who had received VV-ECMO, either in-house or through our mobile ECMO program, were included. We grouped patients into those with BMI ≥40 kg/m2 or not and compared survival at 48 hours, survival to hospital discharge, and hospital length of stay. We conducted multiple logistic and linear regression analyses to analyze the association with categorical and continuous variables, respectively, controlling for patient age, gender, and use of mobile ECMO. Results We identified 112 consecutive adult VV-ECMO patients; median age was 48 (34, 59) years, 61 (54.5%) were male, 56 (50%) were started on ECMO in-house, the median BMI was 31.7 (27.6, 38.8) Kg/ m2; and 23 (20.5%) had a BMI ≥40 kg/m2. Survival at 48 hours and hospital discharge were 69.6% and 61.6%, respectively; and, median hospital length of stay was 20 (9, 33) days. Logistic regression showed no evidence of an association between severe obesity and either 48-hour (OR 1.04, 95% CI 0.37-2.96) or hospital discharge survival (OR 1.06, 95% CI 0.38-2.93). There was, however, a significant correlation between increasing BMI and longer total hospital length of stay (R2 = 0.34; p = 0.0002) which remained significant in linear regression (p = 0.0002) (Figure). Conclusions We found no association between severe obesity and survival at 48-hour and hospital discharge in patients supported on VV-ECMO. Severe obesity was associated with a longer hospital stay, however. Our experience suggests that severe obesity alone should not exclude candidacy for VV-ECMO support.
- Published
- 2020
- Full Text
- View/download PDF
50. Measuring research impact in the 21st century: are alternative metrics the answer?
- Author
-
William L. Baker and Dave L. Dixon
- Subjects
Benchmarking ,Biomedical Research ,Management science ,business.industry ,Humans ,Medicine ,Cardiology and Cardiovascular Medicine ,business - Published
- 2020
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.