7 results on '"Hewitt, Joseph"'
Search Results
2. Proposal of the Whyalla Direct Access Tool and pathway for rural Australian colonoscopy services.
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Kovoor, Joshua G., Hewitt, Joseph N., Barbaro, Antonio, Gupta, Aashray K., Ovenden, Christopher D., Stretton, Brandon, Bacchi, Stephen, and Dobbins, Christopher
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PUBLIC health surveillance , *MEDICAL quality control , *FIBRINOLYTIC agents , *RURAL health services , *HEALTH services accessibility , *COLONOSCOPY , *RURAL conditions , *GASTROINTESTINAL diseases , *EARLY detection of cancer , *HEALTH outcome assessment , *COLORECTAL cancer , *QUALITY assurance , *SAFETY-net health care providers , *INTERPROFESSIONAL relations , *MEDICAL referrals , *IRON deficiency anemia , *ELECTRONIC health records , *HEALTH equity , *PATIENT education , *PATIENT-professional relations , *MEDICAL needs assessment , *COMORBIDITY , *TELEMEDICINE - Abstract
The article addresses the issue of long waiting times and limited access to colonoscopy services for rural patients in Australia. It proposes a novel tool and pathway, called the Whyalla Direct Access Tool, which is a simple questionnaire aiming to expedite rural colonoscopy referrals when it is clearly indicated. Topics include direct access to improve national bowel cancer screening, quality assurance, and streamlining access to colonoscopy services.
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- 2023
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- View/download PDF
3. Emergency Neurosurgery Performed by General Surgeons: A Systematic Review.
- Author
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Hewitt, Joseph N., Ovenden, Christopher D., Glynatsis, John M., Sabab, Ahad, Gupta, Aashray K., Kovoor, Joshua G., Wells, Adam J., and Maddern, Guy J.
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SURGEONS , *NEUROSURGERY , *SUBDURAL hematoma , *RURAL hospitals , *DECOMPRESSIVE craniectomy , *INTRACRANIAL pressure - Abstract
Background: In under-resourced settings, general surgeons may be called upon to perform emergency operations within other specialties. Accordingly, we aimed to characterise patient outcomes after emergency neurosurgery performed by a general surgeon or general surgery trainee. Methods: PubMed, Embase and the Cochrane Library were searched to 30 May 2021 for observational studies reporting outcomes after emergency neurosurgery performed by a general surgeon. Study screening, data extraction, and risk of bias using the Downs and Black checklist were performed in duplicate. Data on setting, operation undertaken, mortality rates and complications were extracted. Meta-analysis was planned but not possible due to heterogeneity. This study is registered with PROSPERO, CRD42021258097. Results: From 632 records, 14 retrospective observational studies were included, covering a total sample of 1,988 operations. Four studies were from Australia, and the remaining 10 were, respectively, from 10 other countries. Most common operations performed were decompressive surgery with burr holes or craniectomy for head trauma and insertion of intracranial pressure monitors. Rural hospitals were the most common settings. Mortality rates for procedures performed by general surgeons at latest follow-up were heterogenous, ranging from 5% for evacuation of chronic subdural haematoma in Kenya to 81% in head injured patients in a Hong Kong study. Conclusions: This is the first systematic review that synthesises the literature to characterise patient outcomes after neurosurgical operations performed by a general surgeon. Findings from this study may benefit global surgery performed in rural, remote, military or humanitarian settings. [ABSTRACT FROM AUTHOR]
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- 2022
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4. Surgery's Rosetta Stone: Natural language processing to predict discharge and readmission after general surgery.
- Author
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Kovoor JG, Bacchi S, Gupta AK, Stretton B, Nann SD, Aujayeb N, Lu A, Nathin K, Lam L, Jiang M, Lee S, To MS, Ovenden CD, Hewitt JN, Goh R, Gluck S, Reid JL, Khurana S, Dobbins C, Hewett PJ, Padbury RT, Malycha J, Trochsler MI, Hugh TJ, and Maddern GJ
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- Humans, Patient Readmission, Natural Language Processing, Australia, Patient Discharge, Artificial Intelligence
- Abstract
Background: This study aimed to examine the accuracy with which multiple natural language processing artificial intelligence models could predict discharge and readmissions after general surgery., Methods: Natural language processing models were derived and validated to predict discharge within the next 48 hours and 7 days and readmission within 30 days (based on daily ward round notes and discharge summaries, respectively) for general surgery inpatients at 2 South Australian hospitals. Natural language processing models included logistic regression, artificial neural networks, and Bidirectional Encoder Representations from Transformers., Results: For discharge prediction analyses, 14,690 admissions were included. For readmission prediction analyses, 12,457 patients were included. For prediction of discharge within 48 hours, derivation and validation data set area under the receiver operator characteristic curves were, respectively: 0.86 and 0.86 for Bidirectional Encoder Representations from Transformers, 0.82 and 0.81 for logistic regression, and 0.82 and 0.81 for artificial neural networks. For prediction of discharge within 7 days, derivation and validation data set area under the receiver operator characteristic curves were, respectively: 0.82 and 0.81 for Bidirectional Encoder Representations from Transformers, 0.75 and 0.72 for logistic regression, and 0.68 and 0.67 for artificial neural networks. For readmission prediction within 30 days, derivation and validation data set area under the receiver operator characteristic curves were, respectively: 0.55 and 0.59 for Bidirectional Encoder Representations from Transformers and 0.77 and 0.62 for logistic regression., Conclusion: Modern natural language processing models, particularly Bidirectional Encoder Representations from Transformers, can effectively and accurately identify general surgery patients who will be discharged in the next 48 hours. However, these approaches are less capable of identifying general surgery patients who will be discharged within the next 7 days or who will experience readmission within 30 days of discharge., (Copyright © 2023 The Author(s). Published by Elsevier Inc. All rights reserved.)
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- 2023
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5. Opioid prescribing, pain, and hospital stay of general surgery patients with oxycodone allergies in South Australia.
- Author
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Kovoor JG, Bacchi S, Gupta AK, Vo T, Lam C, Lam L, Jiang M, Stretton B, To MS, Nann S, Ovenden CD, Hewitt JN, Goh R, Reid JL, Hugh TJ, Dobbins C, Hewett PJ, Trochsler MI, Kette FE, and Maddern GJ
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- Humans, Analgesics, Opioid adverse effects, Oxycodone adverse effects, South Australia epidemiology, Length of Stay, Retrospective Studies, Practice Patterns, Physicians', Australia, Pain, Postoperative drug therapy, Pain, Postoperative epidemiology, Tramadol, Hypersensitivity
- Abstract
Background: The frequency of oxycodone adverse reactions, subsequent opioid prescription, effect on pain and patient care in general surgery patients are not well known. This study aimed to determine prevalence of documented oxycodone allergy and intolerances (independent variables) in a general surgical cohort, and association with prescribing other analgesics (particularly opioids), subjective pain scores, and length of hospital stay (dependent variables)., Methods: This retrospective cohort study included general surgery patients from two South Australian hospitals between April 2020 and March 2022. Multivariable logistic regression evaluated associations between previous oxycodone allergies and intolerances, prescription records, subjective pain scores, and length of hospital stay., Results: Of 12 846 patients, 216 (1.7%) had oxycodone allergies, and 84 (0.7%) oxycodone intolerances. The 216 oxycodone allergy patients had lower odds of receiving oxycodone (OR 0.17, P < 0.001), higher odds of tramadol (OR 3.01, P < 0.001) and tapentadol (OR 2.87, P = 0.001), but 91 (42.3%) still received oxycodone and 19 (8.8%) morphine. The 84 with oxycodone intolerance patients had lower odds of receiving oxycodone (OR 0.23, P < 0.001), higher odds of fentanyl (OR 3.6, P < 0.001) and tramadol (OR 3.35, P < 0.001), but 42 (50%) still received oxycodone. Patients with oxycodone allergies and intolerances had higher odds of elevated subjective pain (OR 1.60, P = 0.013; OR 2.36, P = 0.002, respectively) and longer length of stay (OR 1.36, P = 0.038; OR 2.24, P = 0.002, respectively) than patients without these., Conclusions: General surgery patients with oxycodone allergies and intolerances are at greater risk of worse postoperative pain and longer length of stay, compared to patients without. Many still receive oxycodone, and other opioids that could cause cross-reactivity., (© 2023 The Authors. ANZ Journal of Surgery published by John Wiley & Sons Australia, Ltd on behalf of Royal Australasian College of Surgeons.)
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- 2023
- Full Text
- View/download PDF
6. Vital signs and medical emergency response (MER) activation predict in-hospital mortality in general surgery patients: a study of 15 969 admissions.
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Kovoor JG, Bacchi S, Stretton B, Gupta AK, Lam L, Jiang M, Lee S, To MS, Ovenden CD, Hewitt JN, Goh R, Gluck S, Reid JL, Hugh TJ, Dobbins C, Padbury RT, Hewett PJ, Trochsler MI, Flabouris A, and Maddern GJ
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- Humans, Retrospective Studies, Hospital Mortality, Australia epidemiology, Vital Signs, Hospitalization
- Abstract
Background: The applicability of the vital signs prompting medical emergency response (MER) activation has not previously been examined specifically in a large general surgical cohort. This study aimed to characterize the distribution, and predictive performance, of four vital signs selected based on Australian guidelines (oxygen saturation, respiratory rate, systolic blood pressure and heart rate); with those of the MER activation criteria., Methods: A retrospective cohort study was conducted including patients admitted under general surgical services of two hospitals in South Australia over 2 years. Likelihood ratios for patients meeting MER activation criteria, or a vital sign in the most extreme 1% for general surgery inpatients (<0.5th percentile or > 99.5th percentile), were calculated to predict in-hospital mortality., Results: 15 969 inpatient admissions were included comprising 2 254 617 total vital sign observations. The 0.5th and 99.5th centile for heart rate was 48 and 133, systolic blood pressure 85 and 184, respiratory rate 10 and 31, and oxygen saturations 89% and 100%, respectively. MER activation criteria with the highest positive likelihood ratio for in-hospital mortality were heart rate ≤ 39 (37.65, 95% CI 27.71-49.51), respiratory rate ≥ 31 (15.79, 95% CI 12.82-19.07), and respiratory rate ≤ 7 (10.53, 95% CI 6.79-14.84). These MER activation criteria likelihood ratios were similar to those derived when applying a threshold of the most extreme 1% of vital signs., Conclusions: This study demonstrated that vital signs within Australian guidelines, and escalation to MER activation, appropriately predict in-hospital mortality in a large cohort of patients admitted to general surgical services in South Australia., (© 2023 The Authors. ANZ Journal of Surgery published by John Wiley & Sons Australia, Ltd on behalf of Royal Australasian College of Surgeons.)
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- 2023
- Full Text
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7. Adrenaline in local anaesthetics: do students and junior doctors still believe the myth? A survey.
- Author
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Hewitt JN, Gupta AK, Maddern GJ, and Trochsler MI
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- Anesthetics, Local pharmacology, Australia epidemiology, Choice Behavior physiology, Epinephrine pharmacology, Humans, Ischemia chemically induced, Necrosis chemically induced, Risk Assessment, Students, Medical statistics & numerical data, Surveys and Questionnaires, Anesthetics, Local adverse effects, Epinephrine adverse effects, Students, Medical psychology
- Published
- 2019
- Full Text
- View/download PDF
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