13 results on '"De Vries S"'
Search Results
2. 163 Out-of-Hospital Application of the South African Triage Scale (SATS): Discordance Between Gold Standard and Medic Triage.
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Mould-Millman, N.-K., Colborn, K., De Vries, S., Dixon, J., Hodkinson, P., Ginde, A., and Wallis, L.
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CONFERENCES & conventions ,EMERGENCY medicine ,MEDICAL triage - Published
- 2016
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3. Association of freeze-dried plasma with 24-h mortality among trauma patients at risk for hemorrhage.
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Mould-Millman NK, Wogu AF, Fosdick BK, Dixon JM, Beaty BL, Bhaumik S, Lategan HJ, Stassen W, Schauer SG, Steyn E, Verster J, Wylie C, de Vries S, Jamison M, Kohlbrenner M, Mayet M, Hodsdon L, Wagner L, Snyders LO, Doubell K, Lourens D, and Bebarta VS
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- Humans, Female, Male, Adult, Middle Aged, Prospective Studies, Cross-Sectional Studies, South Africa epidemiology, Blood Component Transfusion, Resuscitation methods, Hemorrhage mortality, Hemorrhage therapy, Hemorrhage etiology, Plasma, Wounds and Injuries mortality, Wounds and Injuries therapy, Wounds and Injuries complications, Wounds and Injuries blood, Freeze Drying
- Abstract
Background: Blood products form the cornerstone of contemporary hemorrhage control but are limited resources. Freeze-dried plasma (FDP), which contains coagulation factors, is a promising adjunct in hemostatic resuscitation. We explore the association between FDP alone or in combination with other blood products on 24-h mortality., Study Design and Methods: This is a secondary data analysis from a cross-sectional prospective observational multicenter study of adult trauma patients in the Western Cape of South Africa. We compare mortality among trauma patients at risk of hemorrhage in three treatment groups: Blood Products only, FDP + Blood Products, and FDP only. We apply inverse probability of treatment weighting and fit a multivariable Cox proportional hazards model to assess the hazard of 24-h mortality., Results: Four hundred and forty-eight patients were included, and 55 (12.2%) died within 24 h of hospital arrival. Compared to the Blood Products only group, we found no difference in 24-h mortality for the FDP + Blood Product group (p = .40) and a lower hazard of death for the FDP only group (hazard = 0.38; 95% CI, 0.15-1.00; p = .05). However, sensitivity analyses showed no difference in 24-h mortality across treatments in subgroups with moderate and severe shock, early blood product administration, and accounting for immortal time bias., Conclusion: We found insufficient evidence to conclude there is a difference in relative 24-h mortality among trauma patients at risk for hemorrhage who received FDP alone, blood products alone, or blood products with FDP. There may be an adjunctive role for FDP in hemorrhagic shock resuscitation in settings with significantly restricted access to blood products., (© 2024 The Authors. Transfusion published by Wiley Periodicals LLC on behalf of AABB.)
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- 2024
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4. Patterns of on-scene and healthcare system trauma deaths in the Western Cape of South Africa.
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Finn J, Dixon JM, Moreira F, Herbst C, Bhaumik S, Fleischer CL, Stassen W, Beaty B, Lourens D, Verster J, Fosdick B, Lategan HJ, de Vries S, Uren G, Wylie C, Steyn E, Geduld H, and Mould-Millman NK
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- Male, Humans, South Africa epidemiology, Retrospective Studies, Cross-Sectional Studies, Accidents, Traffic, Delivery of Health Care, Emergency Service, Hospital, Wounds and Injuries therapy
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Background: Injuries account for 8% or 4.4 million deaths annually worldwide, with 90% of injury deaths occurring in low- and middle-income countries. Inter-personal violence and road traffic injuries account for most injury deaths in South Africa, with rates among the highest globally. Understanding the location, timing, and factors of trauma deaths can identify opportunities to strengthen care., Methods: This is a retrospective cross-sectional secondary analysis of trauma deaths from 2021 to 2022 in the Western Cape of South Africa. Healthcare system trauma deaths were identified from a multicenter study paired with a dataset for on-scene (i.e., prior to ambulance or hospital) trauma deaths in the same jurisdictions. We describe locations, timing, injury factors, and cause of death. We assess associations between those factors., Results: There were 2418 deaths, predominantly young men, with most (2274, 94.0%) occurring on-scene. The most frequent mechanism of injury for all deaths was firearms (32.6%), followed by road traffic collisions (17.8%). On-scene deaths (33.2%) were significantly more likely to be injured by firearms compared to healthcare system deaths (23.6%) (p-value <0.01). Most healthcare system deaths within 4-24 h of injury occurred in a hospital emergency center. Among healthcare system decedents, half died in the emergency unit., Conclusions: We identified a large burden of deaths from interpersonal violence and road traffic collisions, mostly on-scene. In addition to primary prevention, shortening delays to care can improve mortality outcomes especially for deaths occurring within 4-24 h in emergency centers., (© 2023 The Authors. World Journal of Surgery published by John Wiley & Sons Ltd on behalf of International Society of Surgery/Société Internationale de Chirurgie (ISS/SIC).)
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- 2024
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5. Improving prehospital traumatic shock care: implementation and clinical effectiveness of a pragmatic, quasi-experimental trial in a resource-constrained South African setting.
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Mould-Millman NK, Dixon J, Beaty BL, Suresh K, de Vries S, Bester B, Moreira F, Cunningham C, Moodley K, Cermak R, Schauer SG, Maddry JK, Bills CB, Havranek EP, Bebarta VS, and Ginde AA
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- Humans, Ambulances, South Africa, Treatment Outcome, Emergency Medical Services, Shock, Traumatic
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Objectives: This project seeks to improve providers' practices and patient outcomes from prehospital (ie, ambulance-based) trauma care in a middle-income country using a novel implementation strategy to introduce a bundled clinical intervention., Design: We conduct a two-arm, controlled, mixed-methods, hybrid type II study., Setting: This study was conducted in the Western Cape Government Emergency Medical Services (EMS) system of South Africa., Interventions: We pragmatically implemented a simplified prehospital bundle of trauma care (with five core elements) using a novel workplace-based, peer-to-peer, rapid training format. We assigned the intervention and control sites., Outcome Measures: We assessed implementation effectiveness among EMS providers and stakeholders, using the RE-AIM framework. Clinical effectiveness was assessed at the patient level, using changes in Shock Index x Age (SIxAge). Indices and cut-offs were established a priori. We performed a difference-in-differences (D-I-D) analysis with a multivariable mixed effects model., Results: 198 of 240 (82.5%) EMS providers participated, 93 (47%) intervention and 105 (53%) control, with similar baseline characteristics. The overall implementation effectiveness was excellent (80.6%): reach was good (65%), effectiveness was excellent (87%), implementation fidelity was good (72%) and adoption was excellent (87%). Participants and stakeholders generally reported very high satisfaction with the implementation strategy citing that it was a strong operational fit and effective educational model for their organisation. A total of 770 patients were included: 329 (42.7%) interventions and 441 (57.3%) controls, with no baseline differences. Intervention arm patients had more improved SIxAge compared with control at 4 months, which was not statistically significant (-1.4 D-I-D; p=0.35). There was no significant difference in change of SIxAge over time between the groups for any of the other time intervals (p=0.99)., Conclusions: In this quasi-experimental trial of bundled care using the novel workplace rapid training approach, we found overall excellent implementation effectiveness but no overall statistically significant clinical effectiveness., Competing Interests: Competing interests: None declared., (© Author(s) (or their employer(s)) 2023. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.)
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- 2023
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6. The epidemiology and outcomes of prolonged trauma care (EpiC) study: methodology of a prospective multicenter observational study in the Western Cape of South Africa.
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Suresh K, Dixon JM, Patel C, Beaty B, Del Junco DJ, de Vries S, Lategan HJ, Steyn E, Verster J, Schauer SG, Becker TE, Cunningham C, Keenan S, Moore EE, Wallis LA, Baidwan N, Fosdick BK, Ginde AA, Bebarta VS, and Mould-Millman NK
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- Adult, Cohort Studies, Humans, Prospective Studies, Registries, South Africa epidemiology, Emergency Medical Services, Wounds and Injuries epidemiology, Wounds and Injuries therapy
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Background: Deaths due to injuries exceed 4.4 million annually, with over 90% occurring in low-and middle-income countries. A key contributor to high trauma mortality is prolonged trauma-to-treatment time. Earlier receipt of medical care following an injury is critical to better patient outcomes. Trauma epidemiological studies can identify gaps and opportunities to help strengthen emergency care systems globally, especially in lower income countries, and among military personnel wounded in combat. This paper describes the methodology of the "Epidemiology and Outcomes of Prolonged Trauma Care (EpiC)" study, which aims to investigate how the delivery of resuscitative interventions and their timeliness impacts the morbidity and mortality outcomes of patients with critical injuries in South Africa., Methods: The EpiC study is a prospective, multicenter cohort study that will be implemented over a 6-year period in the Western Cape, South Africa. Data collected will link pre- and in-hospital care with mortuary reports through standardized clinical chart abstraction and will provide longitudinal documentation of the patient's clinical course after injury. The study will enroll an anticipated sample of 14,400 injured adults. Survival and regression analysis will be used to assess the effects of critical early resuscitative interventions (airway, breathing, circulatory, and neurologic) and trauma-to-treatment time on the primary 7-day mortality outcome and secondary mortality (24-h, 30-day) and morbidity outcomes (need for operative interventions, secondary infections, and organ failure)., Discussion: This study is the first effort in the Western Cape of South Africa to build a standardized, high-quality, multicenter epidemiologic trauma dataset that links pre- and in-hospital care with mortuary data. In high-income countries and the U.S. military, the introduction of trauma databases and registries has led to interventions that significantly reduce post-injury death and disability. The EpiC study will describe epidemiology trends over time, and it will enable assessments of how trauma care and system processes directly impact trauma outcomes to ultimately improve the overall emergency care system., Trial Registration: Not applicable as this study is not a clinical trial., (© 2022. The Author(s).)
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- 2022
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7. An Innovative Civilian Research Model to Inform Combat-Relevant Prolonged Casualty Care.
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Mould-Millman NK, Keenan S, Dixon J, Steyn E, Lategan HJ, de Vries S, Mata LV, Patel C, Schauer SG, Fisher AD, April MD, Ginde AA, and Bebarta VS
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- Critical Care, Humans, South Africa, Military Medicine, Military Personnel, Wounds, Penetrating
- Abstract
Prolonged Casualty Care (PCC) is a major US military research focus area. PCC is defined as the need to provide patient care for extended periods when evacuation or mission requirements surpass capabilities and/or capacity. US military experts have called for more data relevant to PCC. In response, we aimed to develop an innovative research model using a tiered system of trauma care in the Western Cape of South Africa as a framework for studying relevant US military trauma care and outcomes in a natural prolonged care environment. The objective of this report is to describe the research model and to illustrate how various components of the model may be helpful to provide data relevant to US military PCC. To develop the model, we used a combination of published data, open access reports, and expert opinion to identify, define, and compare relevant components of the Western Cape trauma system suitable for researching aspects of US military PCC. Several key features of the research model are as follows: In the Western Cape, patients are referred from primary and secondary to tertiary facilities (analogous to escalating capabilities by advancing roles of care in the US military). Western Cape civilian trauma providers' capabilities range from prehospital basic life support to definitive trauma surgical and critical care (comparable to US military Tactical Combat Casualty Care to advanced definitive surgical care). Patterns of injuries (e.g., high rates of penetrating trauma and hemorrhagic shock) and prolonged times from injury to definitive surgical care in the Western Cape system have relevance to the US military. This civilian research model for studying PCC is promising and can inform US military research. Importantly, this model also fills gaps in the South African civilian system and is useful for other prolonged trauma care communities worldwide.
- Published
- 2022
8. Using the South African Triage Scale for prehospital triage: a qualitative study.
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Dixon J, Burkholder T, Pigoga J, Lee M, Moodley K, de Vries S, Wallis L, and Mould-Millman NK
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- Focus Groups, Humans, Qualitative Research, South Africa, Emergency Medical Services, Triage
- Abstract
Background: Triage is a critical component of prehospital emergency care. Effective triage of patients allows them to receive appropriate care and to judiciously use personnel and hospital resources. In many low-resource settings prehospital triage serves an additional role of determining the level of destination facility. In South Africa, the Western Cape Government innovatively implemented the South African Triage Scale (SATS) in the public Emergency Medical Services (EMS) service in 2012. The prehospital provider perspectives and experiences of using SATS in the field have not been previously studied., Methods: In this qualitative study, focus group discussions with cohorts of basic, intermediate and advanced life support prehospital providers were conducted and transcribed. A content analysis using an inductive approach was used to code transcripts and identify themes., Results: 15 EMS providers participated in three focus group discussions. Data saturation was reached and four major themes emerged from the qualitative analysis: Implementation and use of SATS; Effectiveness of SATS; Limitations of the discriminator; and Special EMS considerations. Participants overall felt that SATS was easy to use and allowed improved communication with hospital providers during patient handover. Participants, however, described many clinical cases when their clinical gestalt triaged the patient to a different clinical acuity than generated by SATS. Additionally, they stated many clinical discriminators were too subjective to effectively apply or covered too broad a range of clinical severity (e.g., ingestions). Participants provided examples of how the prehospital environment presents additional challenges to using SATS such as changing patient clinical conditions, transport times and social needs of patients., Conclusions: Overall, participants felt that SATS was an effective tool in prehospital emergency care. However, they described many clinical scenarios where SATS was in conflict with their own assessment, the clinical care needs of the patient or the available prehospital and hospital resources. Many of the identified challenges to using SATS in the prehospital environment could be improved with small changes to SATS and provider re-training., (© 2021. The Author(s).)
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- 2021
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9. Validity and reliability of the South African Triage Scale in prehospital providers.
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Mould-Millman NK, Dixon JM, Burkholder T, Pigoga JL, Lee M, de Vries S, Moodley K, Meier M, Colborn K, Patel C, and Wallis LA
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- Humans, Prospective Studies, Reproducibility of Results, South Africa, Emergency Medical Services, Triage
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Background: The South African Triage Scale (SATS) is a validated in-hospital triage tool that has been innovatively adopted for use in the prehospital setting by Western Cape Government (WCG) Emergency Medical Services (EMS) in South Africa. The performance of SATS by EMS providers has not been formally assessed. The study sought to assess the validity and reliability of SATS when used by WCG EMS prehospital providers for single-patient triage., Methods: This is a prospective, assessment-based validation study among WCG EMS providers from March to September 2017 in Cape Town, South Africa. Participants completed an assessment containing 50 clinical vignettes by calculating the three components - triage early warning score (TEWS), discriminators (pre-defined clinical conditions), and a final SATS triage color. Responses were scored against gold standard answers. Validity was assessed by calculating over- and under-triage rates compared to gold standard. Inter-rater reliability was assessed by calculating agreement among EMS providers' responses., Results: A total of 102 EMS providers completed the assessment. The final SATS triage color was accurately determined in 56.5%, under-triaged in 29.5%, and over-triaged in 13.1% of vignette responses. TEWS was calculated correctly in 42.6% of vignettes, under-calculated in 45.0% and over-calculated in 10.9%. Discriminators were correctly identified in only 58.8% of vignettes. There was substantial inter-rater and gold standard agreement for both the TEWS component and final SATS color, but there was lower inter-rater agreement for clinical discriminators., Conclusion: This is the first assessment of SATS as used by EMS providers for prehospital triage. We found that SATS generally under-performed as a triage tool, mainly due to the clinical discriminators. We found good inter-rater reliability, but poor validity. The under-triage rate of 30% was higher than previous reports from the in-hospital setting. The over-triage rate of 13% was acceptable. Further clinically-based and qualitative studies are needed., Trial Registration: Not applicable.
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- 2021
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10. Paramedics, poetry, and film: health policy and systems research at the intersection of theory, art, and practice.
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Brady L, De Vries S, Gallow R, George A, Gilson L, Louw M, Martin AW, Shamis K, and Stuart T
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- Humans, South Africa, Systems Analysis, Systems Theory, Allied Health Personnel, Exposure to Violence, Health Policy, Motion Pictures, Occupational Exposure, Poetry as Topic
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Violence is a public health issue. It is the consequence of a complex set of interacting political, social, and economic factors firmly rooted in past and current injustice. South Africa remains one of the most unequal countries in the world, and in some areas, the rates of violence are comparable to a country that is at war. Increasingly, paramedics working in high-risk areas of Cape Town are being caught in the crossfire, and in 2018, there was an attack on a paramedic crew nearly every week. These attacks are a symptom of much deeper, complex societal issues. Clearly, we require new approaches to better understand the complexity as we collectively find a way forward. It is in this context that we are collaborating with paramedics, poets, and filmmakers to tell human stories from the frontline thereby bringing the lived experiences of healthcare workers into policy making processes. In this commentary, we share a series of poems and a poetry-film that form part of a larger body of work focused on the safety of paramedics, to catalyze discussion about the possibilities that arts-based methods offer us as we seek to better understand and engage with complex social issues that have a direct impact on the health system.
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- 2019
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11. Geography should be taught at medical school.
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de Vries S and Geduld H
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- Humans, South Africa, Emergency Medical Services organization & administration, Health Services Accessibility organization & administration, Rural Health Services organization & administration
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- 2015
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12. Haiti: The South African perspective.
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van Hoving DJ, Smith WP, Kramer EB, de Vries S, Docrat F, and Wallis LA
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- Emergency Medical Services, Haiti, South Africa, Disaster Planning, Earthquakes, Relief Work organization & administration
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BACKGROUND AND PROBLEM STATEMENT: The South African response to the Haitian earthquake consisted of two independent non-government organisations (NGOs) working separately with minimal contact. Both teams experienced problems during the deployment, mainly owing to not following the International Search and Rescue Advisory Group (INSARAG) guidelines., Critical Areas Identified: To improve future South African disaster responses, three functional deployment categories were identified: urban search and rescue, triage and initial stabilisation, and definitive care. To best achieve this, four critical components need to be taken into account: rapid deployment, intelligence from the site, government facilitation, and working under the auspices of recognised organisations such as the United Nations and the World Health Organization., Conclusion: The proposed way forward for South African medical teams responding to disasters is to be unified under a leading academic body, to have an up-to-date volunteer database, and for volunteers to be current with the international search and rescue course currently being developed by the Medical Working Group of INSARAG. An additional consideration is that South African rescue and relief personnel have a primary responsibility to the citizens of South Africa, then the Southern African Development Community region, then the rest of the African continent and finally further afield. The commitment of government, private and military health services as well as NGOs is paramount for a unified response.
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- 2010
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13. The Cape Triage Score -- a triage system for South Africa.
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Wallis PA, Gottschalk SB, Wood D, Bruijns S, de Vries S, and Balfour C
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- Humans, South Africa, Triage organization & administration
- Abstract
The Cape Triage Score (CTS) has been derived by the Cape Triage Group (CTG) for use in emergency units throughout South Africa. It can also be used in the pre-hospital setting, although it is not designed for mass casualty situations. The CTS comprises a physiologically based scoring system and a list of discriminators, designed to triage patients into one of five priority groups for medical attention. Three versions have been developed, for adults, children and infants.
- Published
- 2006
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