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Jazottes H, Chammas M, Lazerges C, Coulet B, Charbit J, Chammas PE. Morbidity associated with pre-hospital upper-limb tourniquet in civilian trauma: a case series. HAND SURGERY & REHABILITATION 2024:101752. [PMID: 39019400 DOI: 10.1016/j.hansur.2024.101752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2024] [Revised: 07/08/2024] [Accepted: 07/09/2024] [Indexed: 07/19/2024]
Abstract
INTRODUCTION The widespread pre-hospital use of tourniquets, particularly in the upper limb, raises questions about associated morbidity, which has been little studied and may have serious consequences for functional prognosis. METHODS A review of 9 patients was carried out, analyzing pre-hospital tourniquet use in terms of complications affecting recovery. RESULTS There were serious complications: musculocutaneous nerve palsy in 1 patient, and compartment syndrome, rhabdomyolysis and ischemia-reperfusion syndrome in another. A role of prolonged pre-hospital tourniquet application in postoperative infection was also suspected in 2 patients. DISCUSSION The risk-benefit ratio and indications for using a tourniquet on the upper limb in the pre-hospital setting need to be reconsidered.
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Affiliation(s)
- Hanna Jazottes
- Service de Chirurgie de la Main et du Membre Supérieur, SOS Main, Hôpital Lapeyronie, CHU Montpellier, 371 Avenue du Doyen Gaston Giraud, 34295 Montpellier cedex 5, France.
| | - Michel Chammas
- Service de Chirurgie de la Main et du Membre Supérieur, SOS Main, Hôpital Lapeyronie, CHU Montpellier, 371 Avenue du Doyen Gaston Giraud, 34295 Montpellier cedex 5, France.
| | - Cyril Lazerges
- Service de Chirurgie de la Main et du Membre Supérieur, SOS Main, Hôpital Lapeyronie, CHU Montpellier, 371 Avenue du Doyen Gaston Giraud, 34295 Montpellier cedex 5, France.
| | - Bertrand Coulet
- Service de Chirurgie de la Main et du Membre Supérieur, SOS Main, Hôpital Lapeyronie, CHU Montpellier, 371 Avenue du Doyen Gaston Giraud, 34295 Montpellier cedex 5, France.
| | - Jonathan Charbit
- Regional Trauma Center (OcciTRAUMA network), Département d'Anesthésie Réanimation A, Hôpital Lapeyronie, CHU Montpellier, 371 Avenue du Doyen Gaston Giraud, 34295 Montpellier Cedex 5, France.
| | - Pierre-Emmanuel Chammas
- Service de Chirurgie de la Main et du Membre Supérieur, SOS Main, Hôpital Lapeyronie, CHU Montpellier, 371 Avenue du Doyen Gaston Giraud, 34295 Montpellier cedex 5, France.
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Standifird CH, Kaisler S, Triplett H, Lauria MJ, Fisher AD, Harrell AJ, White CC. Implementing Tourniquet Conversion Guidelines for Civilian EMS and Prehospital Organizations : A Case Report and Review. Wilderness Environ Med 2024; 35:223-233. [PMID: 38509815 DOI: 10.1177/10806032241234667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/22/2024]
Abstract
Since the first documented use of a tourniquet in 1674, the popularity of tourniquets has waxed and waned. During recent wars and more recently in Emergency Medical Services systems, the tourniquet has been proven to be a valuable tool in the treatment of life-threatening hemorrhage. However, tourniquet use is not without risk, and several studies have demonstrated adverse events and morbidity associated with tourniquet use in the prehospital setting, particularly when left in place for more than 2 h. Consequently, the US military's Committee on Tactical Combat Casualty Care has recommended guidelines for prehospital tourniquet conversion to reduce the risk of adverse events associated with tourniquets once the initial hemorrhage has been controlled. Emergency Medical Services systems that operate in rural, frontier, and austere environments, especially those with transport times to definitive care that routinely exceed 2 h, may consider implementing similar tourniquet conversion guidelines.
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Affiliation(s)
| | - Sean Kaisler
- University of New Mexico School of Medicine, Albuquerque, NM, USA
| | - Hunter Triplett
- Kirk Kerkorian School of Medicine, University of Nevada, Las Vegas, NV
| | - Michael J Lauria
- Department of Emergency Medicine, University of New Mexico School of Medicine, Albuquerque, NM, USA
- Lifeguard Air Emergency Services, Albuquerque, NM, USA
| | - Andrew D Fisher
- Department of Surgery, University of New Mexico School of Medicine, Albuquerque, NM, USA
| | - Andrew J Harrell
- Division of Prehospital, Austere, and Disaster Medicine, Department of Emergency Medicine, University of New Mexico School of Medicine, Albuquerque, NM, USA
- Dr George Kennedy Center for Law Enforcement Operational Medicine, Albuquerque, NM, USA
- Grand Canyon National Park, Arizona, and New Mexico State Police and State Search and Rescue, Sante Fe, NM, USA
| | - Chelsea C White
- Division of Prehospital, Austere, and Disaster Medicine, University of New Mexico School of Medicine, Albuquerque, NM, USA
- UNM Center for Rural and Tribal Medicine, Department of Emergency Medicine, University of New Mexico School of Medicine, Albuquerque, NM, USA
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Parvin-Nejad FP, Vegunta G, Mele G, Sifri ZC. Stop the Bleed in the Era of Virtual Learning: A Novel Strategy for Remote Teaching and Evaluation. J Surg Res 2024; 296:759-765. [PMID: 38377702 DOI: 10.1016/j.jss.2024.01.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2023] [Revised: 11/16/2023] [Accepted: 01/06/2024] [Indexed: 02/22/2024]
Abstract
INTRODUCTION Traumatic hemorrhage is a leading cause of preventable mortality worldwide. The Stop the Bleed (STB) course was developed to equip layperson bystanders with basic bleeding control knowledge and skills. However, large in-person courses have been disrupted due to COVID-19. The aim of this study was to determine the feasibility of teaching and evaluating STB skills through remote video-based instruction. METHODS After undergoing COVID-19 screening, groups of up to eight STB-naive adults were seated in a socially distanced manner and given individual practice kits. A remote STB-certified instructor provided the standard STB lecture and led a 10-min skills practice session via videoconferencing. Participants' skills were evaluated on a 10-point rubric by one in-person evaluator and three remote evaluators. Participants completed a postcourse survey assessing their perceptions of the course. RESULTS Thirty-five participants completed the course, all scoring ≥8/10 after examination by the in-person evaluator. Remote instructors' average scores (9.8 ± 0.45) did not significantly differ from scores of the in-person evaluator (9.9 ± 0.37) (P = 0.252). Thirty-three participants (94%) completed the postcourse survey. All respondents reported being willing and prepared to intervene in scenarios of life-threatening hemorrhage, and 97% reported confidence in using all STB skills. CONCLUSIONS STB skills can be effectively taught and evaluated through a live video-based course. All participants scored highly when evaluated both in-person and remotely, and nearly all reported confidence in skills and knowledge following the course. Remote instruction is a valuable strategy to disseminate STB training to students without access to in-person courses, especially during pandemic restrictions.
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Affiliation(s)
| | | | - Giovanna Mele
- Rutgers New Jersey Medical School, Newark, New Jersey
| | - Ziad C Sifri
- Department of Surgery, Rutgers New Jersey Medical School, Newark, New Jersey
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Ko YC, Tsai TY, Wu CK, Lin KW, Hsieh MJ, Lu TP, Matsuyama T, Chiang WC, Ma MHM. Effectiveness and safety of tourniquet utilization for civilian vascular extremity trauma in the pre-hospital settings: a systematic review and meta-analysis. World J Emerg Surg 2024; 19:10. [PMID: 38504263 PMCID: PMC10949629 DOI: 10.1186/s13017-024-00536-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Accepted: 02/26/2024] [Indexed: 03/21/2024] Open
Abstract
BACKGROUND Tourniquets (TQ) have been increasingly adopted in pre-hospital settings recently. This study examined the effectiveness and safety of applying TQ in the pre-hospital settings for civilian patients with traumatic vascular injuries to the extremities. MATERIALS AND METHODS We systematically searched the Ovid Embase, PubMed, and Cochrane Central Register of Controlled Trials databases from their inception to June 2023. We compared pre-hospital TQ (PH-TQ) use to no PH-TQ, defined as a TQ applied after hospital arrival or no TQ use at all, for civilian vascular extremity trauma patients. The primary outcome was overall mortality rate, and the secondary outcomes were blood product use and hospital stay. We analyzed TQ-related complications as safety outcomes. We tried to include randomized controlled trials (RCTs) and non-randomized studies (including non-RCTs, interrupted time series, controlled before-and-after studies, cohort studies, and case-control studies), if available. Pooled odds ratios (ORs) were calculated and the certainty of evidence was assessed using Grading of Recommendations Assessment, Development, and Evaluation (GRADE) methodology. RESULTS Seven studies involving 4,095 patients were included. In the primary outcome, pre-hospital TQ (PH-TQ) use significantly decrease mortality rate in patients with extremity trauma (odds ratio [OR], 0.48, 95% confidence interval [CI] 0.27-0.86, I2 = 47%). Moreover, the use of PH-TQ showed the decreasing trend of utilization of blood products, such as packed red blood cells (mean difference [MD]: -2.1 [unit], 95% CI: -5.0 to 0.8, I2 = 99%) or fresh frozen plasma (MD: -1.0 [unit], 95% CI: -4.0 to 2.0, I2 = 98%); however, both are not statistically significant. No significant differences were observed in the lengths of hospital and intensive care unit stays. For the safety outcomes, PH-TQ use did not significantly increase risk of amputation (OR: 0.85, 95% CI: 0.43 to 1.68, I2 = 60%) or compartment syndrome (OR: 0.94, 95% CI: 0.37 to 2.35, I2 = 0%). The certainty of the evidence was very low across all outcomes. CONCLUSION The current data suggest that, in the pre-hospital settings, PH-TQ use for civilian patients with vascular traumatic injury of the extremities decreased mortality and tended to decrease blood transfusions. This did not increase the risk of amputation or compartment syndrome significantly.
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Affiliation(s)
- Ying-Chih Ko
- Institute of Epidemiology and Preventive Medicine, College of Public Health, National Taiwan University, Taipei, Taiwan
- Section of Emergency Medicine, Department of Medicine, National Taiwan University Cancer Center, Taipei, Taiwan
- Department of Emergency Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Tou-Yuan Tsai
- Institute of Epidemiology and Preventive Medicine, College of Public Health, National Taiwan University, Taipei, Taiwan
- Emergency Department, Dalin Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Chiayi, Taiwan
- School of Medicine, Tzu Chi University, Hualien, Taiwan
| | - Chien-Kai Wu
- Section of Emergency Medicine, Department of Medicine, National Taiwan University Cancer Center, Taipei, Taiwan
- Department of Emergency Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Kai-Wei Lin
- Department of Emergency Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Ming-Ju Hsieh
- Department of Emergency Medicine, National Taiwan University Hospital, Taipei, Taiwan.
| | - Tzu-Pin Lu
- Institute of Health Data Analytics and Statistics, College of Public Health, National Taiwan University, Taipei, Taiwan.
| | - Tasuku Matsuyama
- Department of Emergency Medicine, Kyoto Prefectural University of Medicine, Kamigyo-ku, Kyoto, Japan
| | - Wen-Chu Chiang
- Department of Emergency Medicine, National Taiwan University Hospital, Taipei, Taiwan
- Department of Emergency Medicine, National Taiwan University Hospital Yun-Lin Branch, Yunlin, Taiwan
| | - Matthew Huei-Ming Ma
- Department of Emergency Medicine, National Taiwan University Hospital, Taipei, Taiwan
- Department of Emergency Medicine, National Taiwan University Hospital Yun-Lin Branch, Yunlin, Taiwan
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Bradford JM, Teixeira PG, DuBose J, Trust MD, Cardenas TC, Golestani S, Efird J, Kempema J, Zimmerman J, Czysz C, Robert M, Ali S, Brown LH, Brown CV. Temporal changes in the prehospital management of trauma patients: 2014-2021. Am J Surg 2024; 228:88-93. [PMID: 37567816 DOI: 10.1016/j.amjsurg.2023.08.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 07/24/2023] [Accepted: 08/01/2023] [Indexed: 08/13/2023]
Abstract
INTRODUCTION Aggressive prehospital interventions (PHI) in trauma may not improve outcomes compared to prioritizing rapid transport. The aim of this study was to quantify temporal changes in the frequency of PHI performed by EMS. METHODS Retrospective chart review of adult patients transported by EMS to our trauma center from January 1, 2014 to 12/31/2021. PHI were recorded and annual changes in their frequency were assessed via year-by-year trend analysis and multivariate regression. RESULTS Between the first and last year of the study period, the frequency of thoracostomy (6% vs. 9%, p = 0.001), TXA administration (0.3% vs. 33%, p < 0.001), and whole blood administration (0% vs. 20%, p < 0.001) increased. Advanced airway procedures (21% vs. 12%, p < 0.001) and IV fluid administration (57% vs. 36%, p < 0.001) decreased. ED mortality decreased from 8% to 5% (p = 0.001) over the study period. On multivariate regression, no PHI were independently associated with increased or decreased ED mortality. CONCLUSION PHI have changed significantly over the past eight years. However, no PHI were independently associated with increased or decreased ED mortality.
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Affiliation(s)
- James M Bradford
- Department of Surgery and Perioperative Care, Dell Medical School, University of Texas at Austin, United States.
| | - Pedro G Teixeira
- Department of Surgery and Perioperative Care, Dell Medical School, University of Texas at Austin, United States.
| | - Joseph DuBose
- Department of Surgery and Perioperative Care, Dell Medical School, University of Texas at Austin, United States.
| | - Marc D Trust
- Department of Surgery and Perioperative Care, Dell Medical School, University of Texas at Austin, United States.
| | - Tatiana Cp Cardenas
- Department of Surgery and Perioperative Care, Dell Medical School, University of Texas at Austin, United States.
| | - Simin Golestani
- Department of Surgery and Perioperative Care, Dell Medical School, University of Texas at Austin, United States.
| | - Jessica Efird
- Department of Surgery and Perioperative Care, Dell Medical School, University of Texas at Austin, United States.
| | - James Kempema
- Department of Surgery and Perioperative Care, Dell Medical School, University of Texas at Austin, United States.
| | - Jessica Zimmerman
- Department of Surgery and Perioperative Care, Dell Medical School, University of Texas at Austin, United States.
| | - Clea Czysz
- Department of Surgery and Perioperative Care, Dell Medical School, University of Texas at Austin, United States.
| | - Michelle Robert
- Department of Surgery and Perioperative Care, Dell Medical School, University of Texas at Austin, United States.
| | - Sadia Ali
- Department of Surgery and Perioperative Care, Dell Medical School, University of Texas at Austin, United States.
| | - Lawrence H Brown
- Department of Surgery and Perioperative Care, Dell Medical School, University of Texas at Austin, United States.
| | - Carlos Vr Brown
- Department of Surgery and Perioperative Care, Dell Medical School, University of Texas at Austin, United States.
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Thai AP, Tseng ES, Kishawi SK, Robenstine JC, Ho VP. Prehospital tourniquet application in extremity vascular trauma: Improved functional outcomes. Surgery 2023; 174:1471-1475. [PMID: 37735036 PMCID: PMC11334707 DOI: 10.1016/j.surg.2023.08.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 07/21/2023] [Accepted: 08/08/2023] [Indexed: 09/23/2023]
Abstract
BACKGROUND Support for prehospital tourniquet use has increased, with recent data suggesting that tourniquet usage decreases shock without increasing limb complications. We hypothesized that prehospital tourniquet application in extremity vascular trauma, compared with no prehospital tourniquet application, is associated with lower rates of delayed amputation and better functional mobility. METHODS We retrospectively studied adult patients with extremity vascular trauma at an urban civilian Level 1 trauma center (June 2016-May 2021). Outcomes of interest included delayed amputation and mobility at hospital discharge, measured by the Activity Measure for Post-Acute Care "6 Clicks" Basic Mobility Score. The "6 Clicks" Basic Mobility Score was documented by physical therapy; higher scores indicate more independent mobility. Injury mechanism, initial lactate, 24-hour transfusions, mortality, and acute kidney injury were also collected. Comparisons were performed using χ2 analysis and Fisher Exact and Wilcoxon rank-sum tests. RESULTS Of 232 patients, prehospital tourniquet application was not associated with mortality or lactate level (both P > .05). The prehospital tourniquet application group had more transfusions, lower rates of acute kidney injury, and fewer delayed amputations (all P < .05). Ninety-one patients (45 prehospital tourniquet application and 46 without prehospital tourniquet application) were evaluated for "Moving between Bed and Chair" in the "6 Clicks" Basic Mobility Score, with patients in the prehospital tourniquet application group demonstrating higher levels of independence (P = .034). CONCLUSION Prehospital tourniquet application was associated with favorable outcomes, including higher functional mobility and decreased delayed amputation. This suggests that tourniquet use should be encouraged in the civilian setting to improve outcomes and reduce the risk of limb loss.
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Affiliation(s)
- Anthony P Thai
- Case Western Reserve University, School of Medicine, Cleveland, OH
| | - Esther S Tseng
- Case Western Reserve University, School of Medicine, Cleveland, OH; Division of Trauma Surgery, Acute Care Surgery, Critical Care, and Burns, Department of Surgery, MetroHealth Medical Center, Cleveland, OH
| | - Sami K Kishawi
- Case Western Reserve University, School of Medicine, Cleveland, OH; Department of Surgery, University Hospitals Cleveland Medical Center, Cleveland, OH
| | - Jacinta C Robenstine
- Case Western Reserve University, School of Medicine, Cleveland, OH; Division of Trauma Surgery, Acute Care Surgery, Critical Care, and Burns, Department of Surgery, MetroHealth Medical Center, Cleveland, OH
| | - Vanessa P Ho
- Case Western Reserve University, School of Medicine, Cleveland, OH; Division of Trauma Surgery, Acute Care Surgery, Critical Care, and Burns, Department of Surgery, MetroHealth Medical Center, Cleveland, OH; Department of Population and Quantitative Health Sciences, Case Western Reserve University, Cleveland, OH.
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Gushing J, Blair SG, Albrecht RM, Sawar Z, Stewart K, Knoles C, Little C, Quang CY. Prehospital tourniquet placement in extremity trauma. Am J Surg 2023; 226:901-907. [PMID: 37596184 DOI: 10.1016/j.amjsurg.2023.08.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 08/07/2023] [Accepted: 08/11/2023] [Indexed: 08/20/2023]
Abstract
BACKGROUND Extremity tourniquets (ET) use has increased in trauma systems to manage traumatic hemorrhage. This study aims to evaluate prehospital ET placement. METHODS This is a retrospective review of a prospectively collected cohort of 211 adult patients who underwent prehospital ET placement over 3 ½ years. Data regarding ET placement was analyzed regarding ET applier, reported indications, extremity appearance at arrival and outcomes. RESULTS A total of 211 patients had completed data sheets. Of these patients, 63.2% had no other intervention prior to ET placement. On arrival, nearly 1/3 of the patients had palpable pulses with ET in place and less than ½ had arterial bleeding upon ET release. DISCUSSION/CONCLUSIONS This study shows that ET are frequently used as the initial intervention in the field. It is of paramount importance that we adapt our first responders training to teach wound assessment and appropriate steps in management of extremity hemorrhagic trauma.
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Affiliation(s)
- Jonathan Gushing
- University of Oklahoma College of Medicine, Oklahoma City, OK, USA.
| | - Scott G Blair
- Department of Surgery, University of Oklahoma College of Medicine, Oklahoma City, OK, USA.
| | - Roxie M Albrecht
- Department of Surgery, University of Oklahoma College of Medicine, Oklahoma City, OK, USA.
| | - Zoona Sawar
- Department of Surgery, University of Oklahoma College of Medicine, Oklahoma City, OK, USA.
| | - Kenneth Stewart
- Department of Surgery, University of Oklahoma College of Medicine, Oklahoma City, OK, USA.
| | - Curtis Knoles
- Department of Pediatrics, Section Pediatric Emergency Medicine, University of Oklahoma College of Medicine, Oklahoma City, OK, USA.
| | - Cooper Little
- University of Oklahoma College of Medicine, Oklahoma City, OK, USA.
| | - Celia Y Quang
- Department of Surgery, University of Oklahoma College of Medicine, Oklahoma City, OK, USA.
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Yánez Benñitez C, Lorente-Aznar T, Labaka I, Soteras I, Baselga M, Morishita K, Ribeiro M, Güemes A. Extremity Tourniquet Self-Application by Antarctica Zodiac Crew Members. Disaster Med Public Health Prep 2023; 17:e561. [PMID: 37937358 DOI: 10.1017/dmp.2023.179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2023]
Abstract
Search and rescue teams and Antarctic research groups use protective cold-water anti-exposure suits (AES) when cruising on Zodiacs. Extremity tourniquet (ET) self-application (SA) donned with AESs has not been previously studied. Our study therefore assessed the SA of 5 commercial ETs (CAT, OMNA, RATS, RMT, and SWAT-T) among 15 volunteers who donned these suits. Tourniquet's SA ability, ease of SA, tolerance, and tourniquet preference were measured. All ETs tested were self-applied to the upper extremity except for the SWAT, which was self-applied with the rest to the lower extremity. Ease- of- SA mean values were compared using the Friedman and Durbin-Conover post hoc tests (P < 0.001). Regarding the upper extremity, OMNA achieved the highest score of 8.5 out of 10, while RMT, and SWAT received lower scores than other options (P < 0.001). For lower extremities, SWAT was found to be inferior to other options (P < 0.01). Overall, OMNA was the best performer. The RATS showed significantly lower tolerance than the other groups in repeated- measures ANOVA with a Tukey post hoc test (P < 0.01). Additionally, out of the 5 ETs tested, 60% of subjects preferred OMNA. The study concluded that SA commercial ETs are feasible over cold-water anti-exposure suits in the Antarctic climate.
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Affiliation(s)
- Carlos Yánez Benñitez
- Department of General, GI, and Acute Care Surgery, San Jorge University Hospital, Huesca, Spain
| | - Teófilo Lorente-Aznar
- Department of Primary Care Medicine, Antarctic Expedition, Jaca Health Center, Paseo de la Constitución, Huesca, Spain
| | - Idurre Labaka
- Emergency Medicine, Donostia University Hospital, Donostia, Spain
| | - Iñigo Soteras
- Emergency Medical System (SEM), Department of Medical Science, University of Girona, Girona, Spain
| | - Marta Baselga
- Surgical, Clinical and Experimental Research Group, Institute for Health Research Aragón, University of Zaragoza, San Juan Bosco, Zaragoza, Spain
| | - Koji Morishita
- Department of Acute Critical Care and Disaster Medicine, Tokyo Medical and Dental University Hospital of Medicine, Tokyo, Japan
| | - Marcelo Ribeiro
- Department of Trauma, Burns, Critical Care and Acute Care Surgery, Sheikh Shakhbout Medical City, Abu Dhabi, U.A.E
| | - Antonio Güemes
- Department of General Surgery, Lozano Blesa University Hospital, Zaragoza, Spain
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Steins K, Goolsby C, Grönbäck AM, Charlton N, Anderson K, Dacuyan-Faucher N, Prytz E, Andersson Granberg T, Jonson CO. Recommendations for Placement of Bleeding Control Kits in Public Spaces-A Simulation Study. Disaster Med Public Health Prep 2023; 17:e527. [PMID: 37852924 DOI: 10.1017/dmp.2023.190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2023]
Abstract
OBJECTIVE Bleeding control measures performed by members of the public can prevent trauma deaths. Equipping public spaces with bleeding control kits facilitates these actions. We modeled a mass casualty incident to investigate the effects of public bleeding control kit location strategies. METHODS We developed a computer simulation of a bomb exploding in a shopping mall. We used evidence and expert opinion to populate the model with parameters such as the number of casualties, the public's willingness to aid, and injury characteristics. Four alternative placement strategies of public bleeding control kits in the shopping mall were tested: co-located with automated external defibrillators (AEDs) separated by 90-second walking intervals, dispersed throughout the mall at 10 locations, located adjacent to 1 exit, located adjacent to 2 exits. RESULTS Placing bleeding control kits at 2 locations co-located with AEDs resulted in the most victims surviving (18.2), followed by 10 kits dispersed evenly throughout the mall (18.0). One or 2 kit locations placed at the mall's main exits resulted in the fewest surviving victims (15.9 and 16.1, respectively). CONCLUSIONS Co-locating bleeding control kits with AEDs at 90-second walking intervals results in the best casualty outcomes in a modeled mass casualty incident in a shopping mall.
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Affiliation(s)
- Krisjanis Steins
- Department of Science and Technology, Linköping University, Sweden
| | - Craig Goolsby
- Department of Emergency Medicine, Harbor-UCLA Medical Center, Torrance, CA, USA
- David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | | | - Nathan Charlton
- Department of Emergency Medicine, University of Virginia, Charlottesville, VA, USA
| | - Kevin Anderson
- F. Edward Hebert School of Medicine, Uniformed Services University of the Health Sciences, Bethesda, MD, USA
| | - Nicole Dacuyan-Faucher
- Department of Emergency Medicine, Harbor-UCLA Medical Center, Torrance, CA, USA
- The Lundquist Institute for Biomedical Innovation at Harbor-UCLA Medical Center, Torrance, CA, USA
| | - Erik Prytz
- Department of Computer and Information Science, Linköping University, Sweden
- Center for Disaster Medicine and Traumatology, and Department of Biomedical and Clinical Sciences, Linköping University, Sweden
| | | | - Carl-Oscar Jonson
- Center for Disaster Medicine and Traumatology, and Department of Biomedical and Clinical Sciences, Linköping University, Sweden
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Liu D, Kulkarni A, Jaqua VF, Cole CA, Pearce JM. Distributed manufacturing of an open-source tourniquet testing system. HARDWAREX 2023; 15:e00442. [PMID: 37457304 PMCID: PMC10338363 DOI: 10.1016/j.ohx.2023.e00442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 05/16/2023] [Accepted: 06/11/2023] [Indexed: 07/18/2023]
Abstract
Tourniquets are effective for casualty-prevention in emergency situations. The use of centrally-manufactured commercial tourniquets, however, is not always possible due to supply chain disruptions. The open-source hardware model has been applied to overcome these disruptions in humanitarian crises and several low-cost digitally manufacturable open-source tourniquets have been developed. With the low reliability of improvised tourniquets, it is important to ensure that distributed manufacturing of tourniquets is effective and safe. Tourniquets can be tested, but existing tourniquet testers are expensive, bulky, and complex to operate, which limits their accessibility to an even greater extent than tourniquets in extreme settings. This article fulfills a need by providing a small, transportable, open-source additive-manufactured tourniquet tester that enables inexpensive and accurate testing of tourniquets against known clinical parameters. The <$100 tourniquet tester is validated and tested for operating force of tourniquets in the field or in distributed manufacturing facilities. The tourniquet tester has a significant economic and operational advantage compared to proprietary counterparts available on the market. Once calibrated with a blood pressure monitor, the built-in LCD displays the measuring range of the tester as 0 to 200 N, which is enough to test the validation of all tourniquets.
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Affiliation(s)
- Dawei Liu
- Department of Electrical and Computer Engineering, Western University, London, Canada
| | - Apoorv Kulkarni
- Department of Electrical and Computer Engineering, Western University, London, Canada
| | | | | | - Joshua M. Pearce
- Department of Electrical and Computer Engineering, Western University, London, Canada
- Ivey Business School, Western University, London, Canada
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Yánez Benítez C, Lorente-Aznar T, Labaka I, Ribeiro MAF, Viteri Y, Morishita K, Baselga M, Güemes A. Tourniquet self-application assessment in cold weather conditions. BMC Emerg Med 2023; 23:101. [PMID: 37653492 PMCID: PMC10472695 DOI: 10.1186/s12873-023-00871-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Accepted: 08/17/2023] [Indexed: 09/02/2023] Open
Abstract
BACKGROUND Our study aimed to assess the ability of nonmedical civilians to self-apply extremity tourniquets in cold weather conditions while wearing insulating technical clothing after receiving basic training. METHODS A field study was conducted among 37 voluntary participants of an expedition party to the Spanish Antarctic base. The researchers assessed the participant's ability to self-apply five commercial extremity tourniquets (CAT, OMNA, RMT, SWAT-T, and RATS) over cold-weather clothing and their achieved effectiveness for vascular occlusion. Upper extremity self-application was performed with a single-handed technique (OHT), and lower extremity applying a two-handed technique (THT). Perceptions of self-application ease mean values ± standard deviation (SD) were compared by applying a 5% statistical significance threshold. Frequency count determined tourniquet preference. RESULTS All the tested ETs, except the SWAT-T, were properly self-applied with an OHT, resulting in effective vascular occlusion in the upper extremity. The five devices tested were self-applied correctly in the lower extremities using THT. The ratcheting marine-designed OMNA ranked the highest for application easiness on both the upper and lower extremities, and the windlass CAT model was the preferred device by most participants. CONCLUSIONS Civilian extremity tourniquet self-application on both upper and lower extremities can be accomplished in cold weather conditions despite using cold-weather gloves and technical clothing after receiving brief training. The ratcheting marine-designed OMNA ranked the highest for application ease, and the windlass CAT model was the preferred device.
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Affiliation(s)
- Carlos Yánez Benítez
- General and GI Surgery Department, San Jorge University Hospital, SALUD, Avenida Martínez de Velasco, 36, Huesca, 22004, Spain.
| | | | - Idurre Labaka
- Emergency Medicine, Donostia University Hospital, C/ Begiristain Doktorea Pasealekua, Donostia, Spain
| | - Marcelo A F Ribeiro
- Division of Trauma, Critical Care, and Acute Care Surgery, Sheikh Shakhbout Medical City, Khalifa University, Abu Dhabi, United Arab Emirates
| | - Yosu Viteri
- Emergency Department, Torrelodones University Hospital, Avenida Castillo Olivares, s/n, Madrid, 28250, Spain
| | - Koji Morishita
- Department of Acute Critical Care and Disaster Medicine, Tokyo Medical and Dental University Hospital of Medicine, Tokyo, Japan
| | - Marta Baselga
- Clinical and Experimental Research Group, Institute for Health Research of Aragón, C/ de San Juan Bosco, 13, Zaragoza, 50009, Spain
| | - Antonio Güemes
- Department of General Surgery, Lozano Blesa University Hospital, Avenida San Juan Bosco, 15, Zaragoza, 50009, Spain
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McCarthy EM, Burns K, Schuster KM, Cone DC. Tourniquet Use in the Prehospital Setting. PREHOSP EMERG CARE 2023; 28:531-535. [PMID: 37486096 DOI: 10.1080/10903127.2023.2240383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 07/14/2023] [Accepted: 07/19/2023] [Indexed: 07/25/2023]
Abstract
PURPOSE Tourniquets are a mainstay of life-saving hemorrhage control. The US military has documented the safety and effectiveness of tourniquet use in combat settings. In civilian settings, events such as the Boston Marathon bombing and mass shootings show that tourniquets are necessary and life-saving entities that must be used correctly and whenever indicated. Much less research has been done on tourniquet use in civilian settings compared to military settings. The purpose of this study is to describe the prehospital use of tourniquets in a regional EMS system served by a single trauma center. METHODS All documented cases of prehospital tourniquet use from 2015 to 2020 were identified via a search of EMS, emergency department, and inpatient records, and reviewed by the lead investigator. The primary outcomes were duration of tourniquet placement, success of hemorrhage control, and complications; secondary outcomes included time of day (by EMS arrival time), transport interval, extremity involved, who placed/removed the tourniquet, and mechanism of injury. RESULTS Of 182 patients with 185 tourniquets applied, duration of application was available for 52, with a median (IQR) of 43 (56) minutes. Hemorrhage control was achieved in all but two cases (96%). Three cases (5.8%) required more than one tourniquet. Complications included five cases of temporary paresthesia, one case of ecchymosis, two cases of fasciotomy, and two cases of compression nerve injury. The serious complication rate was 7.7% (4/52). Time of day was daytime (08:01-16:00) = 15 (31.9%), evening (16:01-00:00) = 27 (57.4%), and night (00:01- 08:00) = 5 (10.6%). The median transport interval was 22 (IQR 5] minutes. The limbs most often injured were the left and right upper extremities (15 each). EMS clinicians and police officers were most often the tourniquet placers. Common mechanisms of injury included gunshot wounds, motorcycle accidents, and glass injuries. CONCLUSION Tourniquets used in the prehospital setting have a high rate of hemorrhage control and a low rate of complications.
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Affiliation(s)
- Elizabeth M McCarthy
- Frank H. Netter MD School of Medicine, Quinnipiac University, North Haven, Connecticut
| | - Kevin Burns
- School of Medicine, Yale University, New Haven, Connecticut
| | | | - David C Cone
- School of Medicine, Yale University, New Haven, Connecticut
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13
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Gabbitas RL, Carius BM. Smart Tactical Application Tourniquet Versus Combat Application Tourniquet: Comparing Layperson Applications for Arterial Occlusion After a Video Demonstration. Cureus 2023; 15:e42615. [PMID: 37644942 PMCID: PMC10461781 DOI: 10.7759/cureus.42615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/27/2023] [Indexed: 08/31/2023] Open
Abstract
BACKGROUND Tourniquet efficacy for extremity hemorrhage is well established, although literature demonstrates variable first responder application efficacy. Several newer models, including the Smart Tactical Application Tourniquet (STAT, STAT Medical Devices, LLC, Freehold, New Jersey), offer alternatives to well-established devices like the Combat Application Tourniquet (CAT, C-A-T Resources, LLC, Rock Hill, South Carolina). Newer models are commercially sold without significant literature regarding efficacy or user feedback. We developed a pilot study to compare CAT and STAT applications for layperson hemorrhage control efficacy after a brief, standardized instructional video. STUDY DESIGN AND METHODS This is a prospective randomized observational study that utilized layperson volunteers for the application of STAT or CAT. After a demographic survey, volunteers were randomized and watched the respective tourniquet instructional video, then applied the tourniquet to a HapMed hemorrhage simulator. The application was assessed for trial time, time to hemorrhage control, occlusion pressure, and total blood loss. Investigators also evaluated volunteers for proper application and received user feedback. RESULTS Eighty-four total volunteers (42 CAT, 42 STAT) completed testing. Volunteers applied the CAT (50.0%, n = 21) with significantly greater rates of success than the STAT (0%, n = 0, p < 0.001). The CAT demonstrated significantly greater average occlusion pressure compared to the STAT (409.9 mm Hg vs. 116.5 mm Hg, p < 0.001). Similarly, CAT application resulted in significantly less average blood loss compared to the STAT (577.8 mL vs. 974.6 mL, p < 0.001). On the 5-point Likert scale, volunteers reported significantly higher benefits from video instruction and comfort with tourniquet application with the CAT over the STAT (4.7 vs. 4.0, p < 0.001, 4.0 vs. 2.4, p < 0.001). CONCLUSIONS When performed by laypersons with minimal video instruction, the CAT was applied with significantly higher rates of success, higher mean occlusion pressures, reduced blood loss, and higher end-user ratings than the STAT.
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Affiliation(s)
| | - Brandon M Carius
- Emergency Medicine, Madigan Army Medical Center, Fort Lewis, USA
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14
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Read DJ, Wong J, Liu R, Gumm K, Anderson D. Prehospital tourniquet use in civilian extremity trauma: an Australian observational study. ANZ J Surg 2023; 93:1896-1900. [PMID: 37150975 DOI: 10.1111/ans.18492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 03/21/2023] [Accepted: 04/17/2023] [Indexed: 05/09/2023]
Abstract
BACKGROUND Prehospital tourniquets (PHTQ) for trauma have been shown to be safe and effective in the military environment and in some civilian settings. However, the supporting civilian data are mostly from North America with a differing case mix and trauma system and may not be applicable to the Australian environment. The aim of this study is to describe our initial experience with PHTQ from safety and efficacy viewpoints. METHOD Retrospective review of all patients with PHTQ from 1 August 2016 to 31 December 2019 was conducted. Data were matched from the RMH Trauma Registry and Ambulance Victoria Registry. Clinical presentation including prehospital observations, PHTQ times, limb outcomes and complications are described. RESULTS Thirty-one cases met inclusion criteria, for whom median age was 37 (IQR: 23.9-66.3), median ISS 17 (13-34) and 80.6% were male. The majority (n = 19, 61.3%) were as a result of road traffic crash, and six (19.4%) from penetrating mechanisms, usually glass. Over a quarter (29.0%) suffered a traumatic amputation. The median prehospital SBP was 100 (IQR: 80-110), the median prehospital HR was 101 (IQR: 77.0-122.3) and was the median PHTQ time was 124 min (IQR: 47-243). Complications attributable to the tourniquet were seen in 4/30 cases (13.3%). CONCLUSION This Australian series differs from North American civilian PHTQ series with a lower penetrating trauma rate and longer PHTQ times. Despite this, complication rates are within the published literature's range. Concerns regarding limited transferability of overseas studies to the Australian context suggests that ongoing audit is required.
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Affiliation(s)
- David J Read
- The Trauma Service, The Royal Melbourne Hospital, Melbourne, Victoria, Australia
- Department of Surgery, University of Melbourne, Melbourne, Victoria, Australia
| | - Jessica Wong
- The Trauma Service, The Royal Melbourne Hospital, Melbourne, Victoria, Australia
| | - Raine Liu
- The Trauma Service, The Royal Melbourne Hospital, Melbourne, Victoria, Australia
| | - Kellie Gumm
- The Trauma Service, The Royal Melbourne Hospital, Melbourne, Victoria, Australia
| | - David Anderson
- Ambulance Victoria, Melbourne, Victoria, Australia
- Department of Paramedicine, Monash University, Melbourne, Victoria, Australia
- Department of Intensive Care & Hyberbaric Medicine, The Alfred Hospital, Melbourne, Victoria, Australia
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15
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Dragset E, Blix S, Melau J, Wilson T, Lund-Kordahl I. Assessing Firefighters' Tourniquet Skill Attainment and Retention: A Controlled Simulation-Based Experiment. Disaster Med Public Health Prep 2023; 17:e409. [PMID: 37317556 DOI: 10.1017/dmp.2023.68] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
BACKGROUND The aim of this study was to train and assess firefighters' skill attainment in the use of tourniquets, and to assess their skill retention after 3 mo. The purpose is to show if firefighters can successfully apply a tourniquet after a short course based on the Norwegian national recommendation for civil prehospital tourniquet use. METHODS This is a prospective experimental study. The study population were firefighters, and the inclusion criterion was any on-duty firefighter. The first phase consisted of baseline precourse testing (T1), a 45-min course, followed by immediate retesting (T2). The second phase consisted of retesting of skill retention after 3 mo (T3). RESULTS A total of 109 participants at T1, 105 at T2, and 62 participants at T3. The firefighters achieved a higher proportion of successful tourniquet applications at T2 (91.4%; 96 of 105) as well as T3 (87.1%; 54 of 62) compared with 50.5% at T1 (55 of 109) (P = 0.009). Mean application time was 59.6 s (55.1-64.2) in T1, 34.9 s (33.3-36.6) in T2 and 37.7 s (33.9-41.4) in T3. CONCLUSION A sample of firefighters can successfully apply a tourniquet after a 45-min course based on the 2019 Norwegian recommendation for civil prehospital tourniquet use. Skill retention after 3 mo was satisfactory for both successful application and application time.
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Affiliation(s)
- Erik Dragset
- UiT - The Arctic University of Norway, Tromsø, Troms, Norway
- Vestfold Hospital Trust, Tønsberg, Vestfold, Norway
| | - Sigurd Blix
- UiT - The Arctic University of Norway, Tromsø, Troms, Norway
- Finnmark Hospital Trust, Kirkenes, Finnmark, Norway
- Norwegian Home Guard, Rapid Task Force Ida&Lyra, Lillehammer, Norway
| | - Jørgen Melau
- Joint Medical Services, Norwegian Armed Forces, Ullensaker, Akershus, Norway
| | - Thomas Wilson
- University Hospital of North Norway, Tromsø, Troms, Norway
| | - Inger Lund-Kordahl
- National Advisory Unit on Trauma, Division of Emergencies and Critical Care, Oslo University Hospital, Oslo, Norway
- Haukeland University Hospital, Bergen, Norway
- Inland University of Applied Sciences, Norway
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16
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Coleman K, Grabo D, Wilson A, Bardes J. Prehospital Tourniquet Use Should be a Trauma Team Activation Criterion. Am Surg 2023; 89:1561-1565. [PMID: 34974713 PMCID: PMC9511206 DOI: 10.1177/00031348211060422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
PURPOSE Prehospital tourniquet application is not a standard trauma team activation (TTA) criterion recommended by the ACS COT. Tourniquet use has seen a resurgence recently with associated risks and benefits of more liberal usage. Our institution added tourniquet application as TTA criterion in January 2019. This study aimed to evaluate the effect this would have on patient care and overtriage. METHODS A prospective analysis was conducted for all TTA associated with tourniquets placed during 2019. An overtriage analysis was conducted utilizing a modified Cribari method as described in Resources for the Optimal Care of the Injured Patient, comparing patients that met standard TTA criteria (TTA-S), to those who met criteria due to tourniquet placement (TTA-T). RESULTS During the study, there were 46 TTA with tourniquets. Mean prehospital tourniquet time was 80 minutes. Median ISS was 10, 8 (17%) had an ISS >15. Urgent operative intervention was needed in 74%, with 23% and 21% requiring orthopedic and vascular procedures, respectively. Tourniquets were correctly placed in 80% and clinically appropriate in 57%. Of these subjects, 25 (54%) were TTA-S and 21 TTA-T. Overtriage analysis was performed. Overtriage for TTA-T was 33.3%. Overtriage among TTA-S was 4%. CONCLUSION Patients with prehospital tourniquets are frequently severely injured. The immediate presence of a trauma surgeon can have significant impacts in these cases. This is particularly important in a rural environment with long tourniquet times. Prehospital tourniquet application as a TTA criteria does not result in excessive overtriage.
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Affiliation(s)
- Kennith Coleman
- Department of Surgery, West Virginia University, Morgantown, WV, USA
| | - Daniel Grabo
- West Virginia University Health Sciences Center, Morgantown, WV, USA
| | - Alison Wilson
- West Virginia University Health Sciences Center, Morgantown, WV, USA
| | - James Bardes
- West Virginia University Health Sciences Center, Morgantown, WV, USA
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17
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Buchalter DB, Kirby DJ, Anil U, Konda SR, Leucht P. Systemic glucose-insulin-potassium reduces skeletal muscle injury, kidney injury, and pain in a murine ischaemia-reperfusion model. Bone Joint Res 2023; 12:212-218. [PMID: 37051831 PMCID: PMC10032225 DOI: 10.1302/2046-3758.123.bjr-2022-0312.r1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/14/2023] Open
Abstract
Glucose-insulin-potassium (GIK) is protective following cardiac myocyte ischaemia-reperfusion (IR) injury, however the role of GIK in protecting skeletal muscle from IR injury has not been evaluated. Given the similar mechanisms by which cardiac and skeletal muscle sustain an IR injury, we hypothesized that GIK would similarly protect skeletal muscle viability. A total of 20 C57BL/6 male mice (10 control, 10 GIK) sustained a hindlimb IR injury using a 2.5-hour rubber band tourniquet. Immediately prior to tourniquet placement, a subcutaneous osmotic pump was placed which infused control mice with saline (0.9% sodium chloride) and treated mice with GIK (40% glucose, 50 U/l insulin, 80 mEq/L KCl, pH 4.5) at a rate of 16 µl/hr for 26.5 hours. At 24 hours following tourniquet removal, bilateral (tourniqueted and non-tourniqueted) gastrocnemius muscles were triphenyltetrazolium chloride (TTC)-stained to quantify percentage muscle viability. Bilateral peroneal muscles were used for gene expression analysis, serum creatinine and creatine kinase activity were measured, and a validated murine ethogram was used to quantify pain before euthanasia. GIK treatment resulted in a significant protection of skeletal muscle with increased viability (GIK 22.07% (SD 15.48%)) compared to saline control (control 3.14% (SD 3.29%)) (p = 0.005). Additionally, GIK led to a statistically significant reduction in gene expression markers of cell death (CASP3, p < 0.001) and inflammation (NOS2, p < 0.001; IGF1, p = 0.007; IL-1β, p = 0.002; TNFα, p = 0.012), and a significant reduction in serum creatine kinase (p = 0.004) and creatinine (p < 0.001). GIK led to a significant reduction in IR-related pain (p = 0.030). Systemic GIK infusion during and after limb ischaemia protects murine skeletal muscle from cell death, kidneys from reperfusion metabolites, and reduces pain by reducing post-ischaemic inflammation.
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Affiliation(s)
- Daniel B Buchalter
- Department of Orthopedic Surgery, NYU Langone Orthopedic Hospital, New York, New York, USA
| | - David J Kirby
- Department of Orthopedic Surgery, NYU Langone Orthopedic Hospital, New York, New York, USA
| | - Utkarsh Anil
- Department of Orthopedic Surgery, NYU Langone Orthopedic Hospital, New York, New York, USA
| | - Sanjit R Konda
- Department of Orthopedic Surgery, NYU Langone Orthopedic Hospital, New York, New York, USA
| | - Philipp Leucht
- Department of Orthopedic Surgery, NYU Langone Orthopedic Hospital, New York, New York, USA
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18
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Joarder M, Noureddine El Moussaoui H, Das A, Williamson F, Wullschleger M. Impact of time and distance on outcomes following tourniquet use in civilian and military settings: A scoping review. Injury 2023; 54:1236-1245. [PMID: 36697284 DOI: 10.1016/j.injury.2023.01.031] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/10/2022] [Revised: 12/01/2022] [Accepted: 01/16/2023] [Indexed: 01/19/2023]
Abstract
BACKGROUND The last two decades have seen the reintroduction of tourniquets into guidelines for the management of acute limb trauma requiring hemorrhage control. Evidence supporting tourniquet application has demonstrated low complication rates in modern military settings involving rapid evacuation timeframes. It is unclear how these findings translate to patients who have prolonged transport times from injury in rural settings. This scoping review investigates the relationship between time and distance on metabolic complications, limb salvage and mortality following tourniquet use in civilian and military settings. METHODS A systematic search strategy was conducted using PubMed, Embase, and SafetyLit databases. Study characteristics, setting, mechanism of injury, prehospital time, tourniquet time, distance, limb salvage, metabolic response, mortality, and tourniquet removal details were extracted from eligible studies. Descriptive statistics were recorded, and studies were grouped by ischemia time (< 2 h, 2-4 h, or > 4 h). RESULTS The search identified 3103 studies, from which 86 studies were included in this scoping review. Of the 86 studies, 55 studies were primarily in civilian environments and 32 were based in military settings. One study included both settings. Blast injury was the most common mechanism of injury sustained by patients in military settings (72.8% [5968/8200]) followed by penetrating injury (23.5% [1926/8200]). In contrast, in civilian settings penetrating injury was the most common mechanism (47.7% [1633/3426]) followed by blunt injury (36.4% [1246/3426]). Tourniquet time was reported in 66/86 studies. Tourniquet time over four hours was associated with reduced limb salvage rates (57.1%) and higher mortality rates (7.1%) compared with a tourniquet time of less than two hours. The overall limb salvage and mortality rates were 69.6% and 6.7% respectively. Metabolic outcomes were reported in 28/86 studies with smaller sample sizes and inconsistencies in which parameters were reported. CONCLUSION This scoping review presents literature describing comparatively safe tourniquet application when used for less than two hours duration. However, there is limited research describing prolonged tourniquet application or when used for protracted distances, such that the impact of tourniquet release time on metabolic outcomes and complications remains unclear. Prospective studies utilizing the development of an international database to provide this dataset is required.
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Affiliation(s)
- Maisah Joarder
- Faculty of Medicine, University of Queensland, Herston, QLD, Australia; Jamieson Trauma Institute, Royal Brisbane and Women's Hospital, Herston, QLD, Australia.
| | - Hussein Noureddine El Moussaoui
- Faculty of Medicine, University of Queensland, Herston, QLD, Australia; Jamieson Trauma Institute, Royal Brisbane and Women's Hospital, Herston, QLD, Australia
| | - Arpita Das
- Jamieson Trauma Institute, Royal Brisbane and Women's Hospital, Herston, QLD, Australia
| | - Frances Williamson
- Faculty of Medicine, University of Queensland, Herston, QLD, Australia; Jamieson Trauma Institute, Royal Brisbane and Women's Hospital, Herston, QLD, Australia; Trauma Service, Royal Brisbane and Women's Hospital, Herston, QLD, Australia
| | - Martin Wullschleger
- Faculty of Medicine, University of Queensland, Herston, QLD, Australia; Jamieson Trauma Institute, Royal Brisbane and Women's Hospital, Herston, QLD, Australia; Trauma Service, Royal Brisbane and Women's Hospital, Herston, QLD, Australia
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19
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The Untrained Public's Ability to Apply the Layperson Audiovisual Assist Tourniquet vs a Combat Application Tourniquet: A Randomized Controlled Trial. J Am Coll Surg 2023; 236:178-186. [PMID: 36165504 DOI: 10.1097/xcs.0000000000000432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
BACKGROUND Although the Stop the Bleed campaign's impact is encouraging, gaps remain. These gaps include rapid skill decay, a lack of easy-to-use tourniquets for the untrained public, and training barriers that prevent scalability. A team of academic and industry partners developed the Layperson Audiovisual Assist Tourniquet (LAVA TQ)-the first audiovisual-enabled tourniquet for public use. LAVA TQ addresses known tourniquet application challenges and is novel in its design and technology. STUDY DESIGN This study is a prospective, randomized, superiority trial comparing the ability of the untrained public to apply LAVA TQ to a simulated leg vs their ability to apply a Combat Application Tourniquet (CAT). The study team enrolled participants in Boston, MA; Frederick, MD; and Linköping, Sweden in 2022. The primary outcome was the proportion of successful applications of each tourniquet. Secondary outcomes included: mean time to application, placement position, reasons for failed application, and comfort with the devices. RESULTS Participants applied the novel LAVA TQ successfully 93% (n = 66 of 71) of the time compared with 22% (n = 16 of 73) success applying CAT (relative risk 4.24 [95% CI 2.74 to 6.57]; p < 0.001). Participants applied LAVA TQ faster (74.1 seconds) than CAT (126 seconds ; p < 0.001) and experienced a greater gain in comfort using LAVA TQ than CAT. CONCLUSIONS The untrained public is 4 times more likely to apply LAVA TQ correctly than CAT. The public also applies LAVA TQ faster than CAT and has more favorable opinions about its usability. LAVA TQ's highly intuitive design and built-in audiovisual guidance solve known problems of layperson education and skill retention and could improve public bleeding control.
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20
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Tung L, Seamon MJ, Dauer E, Alabi O, Benarroch-Gampel J, Passman J, Fitzgerald C, Lobichusky B, Mazzei M, Rodriguez W, Smith RN. Using Arterial Pressure Index to Predict Arterial Injuries in Penetrating Trauma to the Upper Extremities. Am Surg 2023; 89:108-112. [PMID: 33876999 DOI: 10.1177/00031348211011142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
BACKGROUND Upper extremity (UE) vascular injuries account for 18.4% of all traumatic vascular injuries. Arterial pressure index (API) use in lower extremity injuries to determine the need for further investigations is well established. However, due to collateral circulation in UEs, it is unclear if the same algorithm can be applied. The purpose of this study was to determine if APIs can be used to determine the need for computed tomography angiogram (CTA) in penetrating UE trauma. METHODS All adult trauma patients with penetrating UE trauma and APIs from 2006 to 2016 were identified at 3 urban US level 1 trauma centers. Sensitivity, specificity, and positive and negative predictive values of APIs <.9 in detecting UE arterial injuries were calculated. RESULTS During the 11-year study period, 218 patients met our inclusion criteria. Gunshot wounds comprised 76.6% and stab wounds 17.9%. Median injury severity score and API were 9 and 1, respectively. Seventy-two of our patients underwent evaluation with CTA. Of the injuries, the most common were thrombus or occlusion (46.7%), transection (23.1%), and dissection (15.4%), radiographically. Ultimately, 32 patients underwent surgical.
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Affiliation(s)
- Lily Tung
- Division of Traumatology, Surgical Critical Care and Emergency Surgery, Perelman School of Medicine, 14640University of Pennsylvania, Philadelphia, PA, USA
| | - Mark J Seamon
- Division of Traumatology, Surgical Critical Care and Emergency Surgery, Perelman School of Medicine, 14640University of Pennsylvania, Philadelphia, PA, USA
| | - Elizabeth Dauer
- Lewis Katz School of Medicine, 12314Temple University, Philadelphia, PA, USA
| | - Olamide Alabi
- 12239Emory University School of Medicine, Atlanta, GA, USA
| | | | - Jesse Passman
- Division of Traumatology, Surgical Critical Care and Emergency Surgery, Perelman School of Medicine, 14640University of Pennsylvania, Philadelphia, PA, USA
| | | | - Brone Lobichusky
- Lewis Katz School of Medicine, 12314Temple University, Philadelphia, PA, USA
| | - Michael Mazzei
- Lewis Katz School of Medicine, 12314Temple University, Philadelphia, PA, USA
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21
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Priyadarshini P, Kaur S, Gupta K, Kumar A, Alam J, Bagaria D, Choudhary N, Gupta A, Sagar S, Mishra B, Kumar S. Protocolized approach saves the limb in peripheral arterial injury: A decade experience. Chin J Traumatol 2022:S1008-1275(22)00140-7. [PMID: 36641321 DOI: 10.1016/j.cjtee.2022.12.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 09/30/2022] [Accepted: 11/12/2022] [Indexed: 12/29/2022] Open
Abstract
PURPOSE Outcomes of peripheral arterial injury (PAI) depend on various factors, such as warm ischemia time and concomitant injuries. Suboptimal prehospital care may lead to delayed presentation, and a lack of dedicated trauma system may lead to poorer outcome. Also, there are few reports of these outcomes. The aim of this study was to review our experience of PAI management for more than a decade, and identify the predictors of limb loss in these patients. METHODS This is a retrospective analysis of prospectively maintained database of trauma admissions at a level I trauma center from January 2008 to December 2019. Patients with acute upper limb arterial injuries or lower limb arterial injuries at or above the level of popliteal artery were included. Association of limb loss with ischemia time, mechanism of injury and concomitant injuries was studied using multiple logistic regressions. Statistical analysis was performed using STATA version 15.0 (Stata Corp LLC, Texas). RESULTS Out of 716 patients with PAI, the majority (92%) were young males. Blunt trauma was the most common mechanism of injury. Median ischemia time was 4 h (interquartile range 2-7 h). Brachial artery (28%) was the most common injured vessel followed by popliteal artery (18%) and femoral artery (17%). Limb salvage rate was 78%. Out of them, 158 (22%) patients needed amputation, and 53 (7%) had undergone primary amputation. The majority (86%) of patients who required primary or secondary amputations had blunt trauma. On multivariate analysis, blunt trauma, ischemia time more than 6 h and concomitant venous, skeletal, and soft tissue injuries were associated with higher odds of amputation. CONCLUSION Over all limb salvage rates was 78% in our series. Blunt mechanism of injury and associated skeletal and soft tissue injury, ischemia time more than 6 h portend a poor prognosis. Injury prevention, robust prehospital care, and rapid referral to specialized trauma center are few efficient measures, which can decrease the morbidity associated with vascular injury.
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Affiliation(s)
- Pratyusha Priyadarshini
- Division of Trauma Surgery & Critical Care, Jai Prakash Narayan Apex Trauma Centre, All India Institute of Medical Sciences, New Delhi, India
| | - Supreet Kaur
- Division of Trauma Surgery & Critical Care, Jai Prakash Narayan Apex Trauma Centre, All India Institute of Medical Sciences, New Delhi, India
| | - Komal Gupta
- Division of Trauma Surgery & Critical Care, Jai Prakash Narayan Apex Trauma Centre, All India Institute of Medical Sciences, New Delhi, India
| | - Abhinav Kumar
- Division of Trauma Surgery & Critical Care, Jai Prakash Narayan Apex Trauma Centre, All India Institute of Medical Sciences, New Delhi, India
| | - Junaid Alam
- Division of Trauma Surgery & Critical Care, Jai Prakash Narayan Apex Trauma Centre, All India Institute of Medical Sciences, New Delhi, India
| | - Dinesh Bagaria
- Division of Trauma Surgery & Critical Care, Jai Prakash Narayan Apex Trauma Centre, All India Institute of Medical Sciences, New Delhi, India
| | - Narender Choudhary
- Division of Trauma Surgery & Critical Care, Jai Prakash Narayan Apex Trauma Centre, All India Institute of Medical Sciences, New Delhi, India
| | - Amit Gupta
- Division of Trauma Surgery & Critical Care, Jai Prakash Narayan Apex Trauma Centre, All India Institute of Medical Sciences, New Delhi, India
| | - Sushma Sagar
- Division of Trauma Surgery & Critical Care, Jai Prakash Narayan Apex Trauma Centre, All India Institute of Medical Sciences, New Delhi, India
| | - Biplab Mishra
- Division of Trauma Surgery & Critical Care, Jai Prakash Narayan Apex Trauma Centre, All India Institute of Medical Sciences, New Delhi, India
| | - Subodh Kumar
- Division of Trauma Surgery & Critical Care, Jai Prakash Narayan Apex Trauma Centre, All India Institute of Medical Sciences, New Delhi, India.
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22
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Mokhtari AK, Mikdad S, Luckhurst C, Hwabejire J, Fawley J, Parks JJ, Mendoza AE, Kaafarani HMA, Velmahos GC, Bloemers FW, Saillant NN. Prehospital extremity tourniquet placements-performance evaluation of non-EMS placement of a lifesaving device. Eur J Trauma Emerg Surg 2022; 48:4255-4265. [PMID: 35538361 DOI: 10.1007/s00068-022-01973-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Accepted: 03/26/2022] [Indexed: 11/03/2022]
Abstract
BACKGROUND The education of civilians and first responders in prehospital tourniquet (PT) utilization has spread rapidly. We aimed to describe trends in emergency medical services (EMS) and non-EMS PT utilization, and their ability to identify proper clinical indications and to appropriately apply tourniquets in the field. METHODS A retrospective cohort study was conducted to evaluate all adult patients with PTs who presented at two Level I trauma centers between January 2015 and December 2019. Data were collected via an electronic patient query tool and cross-referenced with institutional Trauma Registries. Medically trained abstractors determined if PTs were clinically indicated (limb amputation, vascular hard signs, injury requiring hemostasis procedure, or significant documented blood loss). PTs were further designated as appropriately or inappropriately applied (based on tourniquet location, venous tourniquet, greater than 2-h ischemic time). Descriptive statistics and univariate analyses were performed. RESULTS 146 patients met inclusion criteria. The incidence of yearly PT placements increased between 2015 and 2019, with an increase in placement by non-EMS personnel (police, firefighter, bystander, and patient). Improvised PTs were frequently utilized by bystanders and patients, whereas first responders had high rates of commercial tourniquet use. A high proportion of tourniquets were placed without indication (72/146, 49%); however, the proportion of PTs placed without a proper indication across applier groups was not statistically different (p = 0.99). Rates of inappropriately applied PTs ranged from 21 to 46% across all groups applying PTs. CONCLUSIONS PT placement was increasingly performed by non-EMS personnel. Present data indicate that non-EMS persons applied PTs at a similar performance level of those applied by EMS. Study LevelLevel III.
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Affiliation(s)
- Ava K Mokhtari
- Division of Trauma, Emergency Surgery and Surgical Critical Care, Massachusetts General Hospital, Harvard Medical School, 165 Cambridge Street, Suite 810, Boston, MA, 02114, USA.
| | - Sarah Mikdad
- Division of Trauma, Emergency Surgery and Surgical Critical Care, Massachusetts General Hospital, Harvard Medical School, 165 Cambridge Street, Suite 810, Boston, MA, 02114, USA
- Department of Trauma Surgery, VU Medical Center, Amsterdam UMC, Amsterdam, The Netherlands
| | - Casey Luckhurst
- Division of Trauma, Emergency Surgery and Surgical Critical Care, Massachusetts General Hospital, Harvard Medical School, 165 Cambridge Street, Suite 810, Boston, MA, 02114, USA
| | - John Hwabejire
- Division of Trauma, Emergency Surgery and Surgical Critical Care, Massachusetts General Hospital, Harvard Medical School, 165 Cambridge Street, Suite 810, Boston, MA, 02114, USA
| | - Jason Fawley
- Division of Trauma, Emergency Surgery and Surgical Critical Care, Massachusetts General Hospital, Harvard Medical School, 165 Cambridge Street, Suite 810, Boston, MA, 02114, USA
| | - Jonathan J Parks
- Division of Trauma, Emergency Surgery and Surgical Critical Care, Massachusetts General Hospital, Harvard Medical School, 165 Cambridge Street, Suite 810, Boston, MA, 02114, USA
| | - April E Mendoza
- Division of Trauma, Emergency Surgery and Surgical Critical Care, Massachusetts General Hospital, Harvard Medical School, 165 Cambridge Street, Suite 810, Boston, MA, 02114, USA
| | - Haytham M A Kaafarani
- Division of Trauma, Emergency Surgery and Surgical Critical Care, Massachusetts General Hospital, Harvard Medical School, 165 Cambridge Street, Suite 810, Boston, MA, 02114, USA
| | - George C Velmahos
- Division of Trauma, Emergency Surgery and Surgical Critical Care, Massachusetts General Hospital, Harvard Medical School, 165 Cambridge Street, Suite 810, Boston, MA, 02114, USA
| | - Frank W Bloemers
- Department of Trauma Surgery, VU Medical Center, Amsterdam UMC, Amsterdam, The Netherlands
| | - Noelle N Saillant
- Division of Trauma, Emergency Surgery and Surgical Critical Care, Massachusetts General Hospital, Harvard Medical School, 165 Cambridge Street, Suite 810, Boston, MA, 02114, USA
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23
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Spreadborough PJ, Strong AL, Mares J, Levi B, Davis TA. Tourniquet use following blast-associated complex lower limb injury and traumatic amputation promotes end organ dysfunction and amplified heterotopic ossification formation. J Orthop Surg Res 2022; 17:422. [PMID: 36123728 PMCID: PMC9484189 DOI: 10.1186/s13018-022-03321-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Accepted: 09/13/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Traumatic heterotopic ossification (tHO) is characterized by ectopic bone formation in extra-skeletal sites leading to impaired wound healing, entrapment of neurovascular structures, pain, and reduced range of motion. HO has become a signature pathology affecting wounded military personnel who have sustained blast-associated traumatic amputations during the recent conflicts in Iraq and Afghanistan and can compound recovery by causing difficulty with prosthesis limb wearing. Tourniquet use to control catastrophic limb hemorrhage prior to surgery has become almost ubiquitous during this time, with the recognition the prolonged use may risk an ischemia reperfusion injury and associated complications. While many factors influence the formation of tHO, the extended use of tourniquets to limit catastrophic hemorrhage during prolonged field care has not been explored. METHODS Utilizing an established pre-clinical model of blast-associated complex lower limb injury and traumatic amputation, we evaluated the effects of tourniquet use on tHO formation. Adult male rats were subjected to blast overpressure exposure, femur fracture, and soft tissue crush injury. Pneumatic tourniquet (250-300 mmHg) applied proximal to the injured limb for 150-min was compared to a control group without tourniquet, before a trans-femoral amputation was performed. Outcome measures were volume to tHO formation at 12 weeks and changes in proteomic and genomic markers of early tHO formation between groups. RESULTS At 12 weeks, volumetric analysis with microCT imaging revealed a 70% increase in total bone formation (p = 0.007) near the site of injury compared to rats with no tourniquet time in the setting of blast-injuries. Rats subjected to tourniquet usage had increased expression of danger-associated molecular patterns (DAMPs) and end organ damage as early as 6 h and as late as 7 days post injury. The expressions of pro-inflammatory cytokines and chemokines and osteochondrogenic genes using quantitative RT-PCR similarly revealed increased expression as early as 6 h post injury, and these genes along with hypoxia associated genes remained elevated for 7 days compared to no tourniquet use. CONCLUSION These findings suggest that tourniquet induced ischemia leads to significant increases in key transcription factors associated with early endochondral bone formation, systemic inflammatory and hypoxia, resulting in increased HO formation.
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Affiliation(s)
- Philip J. Spreadborough
- Department of Surgery, Uniformed Services University of the Health Sciences, 4301 Jones Bridge Road, Bethesda, MD 20814 USA
- Academic Department of Military Surgery and Trauma, Royal Centre for Defence Medicine, Birmingham, UK
| | - Amy L. Strong
- Division of Plastic and Reconstructive Surgery, Department of Surgery, University of Michigan, Ann Arbor, MI USA
| | - John Mares
- Department of Surgery, Uniformed Services University of the Health Sciences, 4301 Jones Bridge Road, Bethesda, MD 20814 USA
| | - Benjamin Levi
- Department of Surgery, University of Texas Southwestern Medical Center, Dallas, TX USA
| | - Thomas A. Davis
- Department of Surgery, Uniformed Services University of the Health Sciences, 4301 Jones Bridge Road, Bethesda, MD 20814 USA
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24
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Narayan M, Chandramouli M, de Angelis P, Gupta A, An A, Dominguez M, Zappetti D, Winchell RJ, Barie PS. Video-Based Stop the Bleed Training: A New Era in Education. J Surg Res 2022; 280:535-542. [PMID: 36087350 DOI: 10.1016/j.jss.2022.07.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 06/26/2022] [Accepted: 07/12/2022] [Indexed: 11/25/2022]
Abstract
INTRODUCTION Uncontrolled bleeding is a leading cause of preventable death. The "Stop the Bleed" (StB) program trains laypersons in hemorrhage control. This study evaluated the efficacy of video-based StB training. METHODS Participants watched two different videos: a didactic video (DdV) and a technical video (TeV) demonstrating proper techniques for StB skills (i.e., direct pressure [DP], wound packing [WP], and tourniquet application [TA]). Then, they completed a standardized skills examination (SE). Participants were surveyed at three different time points (baseline, post-DdV, and post-SE) for comparison. We compared paired categorical and continuous variables with the McNemar-Bowker test and Wilcoxon signed-rank test, respectively. Alpha was set at 0.05. RESULTS One hundred six participants were enrolled: 52% were female and the median age was 23 y (22, 24). At baseline, 29%, 8%, and 13% reported being somewhat or extremely confident with DP, WP, and TA, respectively. These percentages increased to 92%, 79%, and 76%, respectively, after the DdV (all, P < 0.0001). After the TeV and SE, percentages increased further to 100%, 96%, and 100% (all, P < 0.0001). During the SE, 96%, 99%, and 89% of participants were able to perform DP, WP, and TA without prompting. Among participants, 98% agreed that the video course was effective and 79% agreed that the DdV and TeV were engaging. CONCLUSIONS We describe a novel paradigm of video-based StB learning combined with an in-person, standardized SE. Confidence scores in performing the three crucial StB tasks increased significantly during and after course completion. Through remote learning, StB could be disseminated more widely.
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Affiliation(s)
- Mayur Narayan
- Division of Trauma, Burns, Acute and Critical Care, Department of Surgery, Weill Cornell Medicine, New York, New York
| | - Mathangi Chandramouli
- Division of Trauma, Burns, Acute and Critical Care, Department of Surgery, Weill Cornell Medicine, New York, New York
| | - Paolo de Angelis
- Division of Trauma, Burns, Acute and Critical Care, Department of Surgery, Weill Cornell Medicine, New York, New York.
| | - Aakanksha Gupta
- Division of Trauma, Burns, Acute and Critical Care, Department of Surgery, Weill Cornell Medicine, New York, New York
| | - Anjile An
- Division of Biostatistics, Department of Population Health Sciences, Weill Cornell Medicine, New York, New York
| | - Maureen Dominguez
- Division of Trauma, Burns, Acute and Critical Care, Department of Surgery, Weill Cornell Medicine, New York, New York
| | - Dana Zappetti
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Weill Cornell Medicine, New York, New York
| | - Robert J Winchell
- Division of Trauma, Burns, Acute and Critical Care, Department of Surgery, Weill Cornell Medicine, New York, New York; Division of Medical Ethics, Department of Medicine, Weill Cornell Medicine, New York, New York
| | - Philip S Barie
- Division of Trauma, Burns, Acute and Critical Care, Department of Surgery, Weill Cornell Medicine, New York, New York
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25
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Newgard CD, Fischer PE, Gestring M, Michaels HN, Jurkovich GJ, Lerner EB, Fallat ME, Delbridge TR, Brown JB, Bulger EM. National guideline for the field triage of injured patients: Recommendations of the National Expert Panel on Field Triage, 2021. J Trauma Acute Care Surg 2022; 93:e49-e60. [PMID: 35475939 PMCID: PMC9323557 DOI: 10.1097/ta.0000000000003627] [Citation(s) in RCA: 66] [Impact Index Per Article: 33.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 03/09/2022] [Accepted: 03/15/2022] [Indexed: 11/26/2022]
Abstract
This work details the process of developing the updated field triage guideline, the supporting evidence, and the final version of the 2021 National Guideline for the Field Triage of Injured Patients.
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Affiliation(s)
- Craig D. Newgard
- From the Department of Emergency Medicine (C.D.N., J.R.L.), Center for Policy and Research in Emergency Medicine, Oregon Health and Science University, Portland, Oregon; Department of Surgery (P.E.F.), University of Tennessee Health Science Center, Memphis, Tennessee; Department of Surgery (M.G.), University of Rochester, Rochester, New York; Committee on Trauma (H.N.M., M.N., M.D., J.D.), American College of Surgeons, Chicago, Illinois; Department of Surgery (G.J.J.), UC Davis Health, Sacramento, California; Department of Emergency Medicine (E.B.L.), University at Buffalo, Buffalo, New York; Department of Surgery (M.E.F.), University of Louisville School of Medicine, Norton Children's Hospital, Louisville, Kentucky; Maryland Institute for Emergency Medical Services Systems (T.R.D.), Baltimore, Maryland; Division of Trauma and General Surgery, Department of Surgery (J.B.B.), University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania; Department of Surgery (E.M.B.), University of Washington, Seattle, Washington
| | - Peter E. Fischer
- From the Department of Emergency Medicine (C.D.N., J.R.L.), Center for Policy and Research in Emergency Medicine, Oregon Health and Science University, Portland, Oregon; Department of Surgery (P.E.F.), University of Tennessee Health Science Center, Memphis, Tennessee; Department of Surgery (M.G.), University of Rochester, Rochester, New York; Committee on Trauma (H.N.M., M.N., M.D., J.D.), American College of Surgeons, Chicago, Illinois; Department of Surgery (G.J.J.), UC Davis Health, Sacramento, California; Department of Emergency Medicine (E.B.L.), University at Buffalo, Buffalo, New York; Department of Surgery (M.E.F.), University of Louisville School of Medicine, Norton Children's Hospital, Louisville, Kentucky; Maryland Institute for Emergency Medical Services Systems (T.R.D.), Baltimore, Maryland; Division of Trauma and General Surgery, Department of Surgery (J.B.B.), University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania; Department of Surgery (E.M.B.), University of Washington, Seattle, Washington
| | - Mark Gestring
- From the Department of Emergency Medicine (C.D.N., J.R.L.), Center for Policy and Research in Emergency Medicine, Oregon Health and Science University, Portland, Oregon; Department of Surgery (P.E.F.), University of Tennessee Health Science Center, Memphis, Tennessee; Department of Surgery (M.G.), University of Rochester, Rochester, New York; Committee on Trauma (H.N.M., M.N., M.D., J.D.), American College of Surgeons, Chicago, Illinois; Department of Surgery (G.J.J.), UC Davis Health, Sacramento, California; Department of Emergency Medicine (E.B.L.), University at Buffalo, Buffalo, New York; Department of Surgery (M.E.F.), University of Louisville School of Medicine, Norton Children's Hospital, Louisville, Kentucky; Maryland Institute for Emergency Medical Services Systems (T.R.D.), Baltimore, Maryland; Division of Trauma and General Surgery, Department of Surgery (J.B.B.), University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania; Department of Surgery (E.M.B.), University of Washington, Seattle, Washington
| | - Holly N. Michaels
- From the Department of Emergency Medicine (C.D.N., J.R.L.), Center for Policy and Research in Emergency Medicine, Oregon Health and Science University, Portland, Oregon; Department of Surgery (P.E.F.), University of Tennessee Health Science Center, Memphis, Tennessee; Department of Surgery (M.G.), University of Rochester, Rochester, New York; Committee on Trauma (H.N.M., M.N., M.D., J.D.), American College of Surgeons, Chicago, Illinois; Department of Surgery (G.J.J.), UC Davis Health, Sacramento, California; Department of Emergency Medicine (E.B.L.), University at Buffalo, Buffalo, New York; Department of Surgery (M.E.F.), University of Louisville School of Medicine, Norton Children's Hospital, Louisville, Kentucky; Maryland Institute for Emergency Medical Services Systems (T.R.D.), Baltimore, Maryland; Division of Trauma and General Surgery, Department of Surgery (J.B.B.), University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania; Department of Surgery (E.M.B.), University of Washington, Seattle, Washington
| | - Gregory J. Jurkovich
- From the Department of Emergency Medicine (C.D.N., J.R.L.), Center for Policy and Research in Emergency Medicine, Oregon Health and Science University, Portland, Oregon; Department of Surgery (P.E.F.), University of Tennessee Health Science Center, Memphis, Tennessee; Department of Surgery (M.G.), University of Rochester, Rochester, New York; Committee on Trauma (H.N.M., M.N., M.D., J.D.), American College of Surgeons, Chicago, Illinois; Department of Surgery (G.J.J.), UC Davis Health, Sacramento, California; Department of Emergency Medicine (E.B.L.), University at Buffalo, Buffalo, New York; Department of Surgery (M.E.F.), University of Louisville School of Medicine, Norton Children's Hospital, Louisville, Kentucky; Maryland Institute for Emergency Medical Services Systems (T.R.D.), Baltimore, Maryland; Division of Trauma and General Surgery, Department of Surgery (J.B.B.), University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania; Department of Surgery (E.M.B.), University of Washington, Seattle, Washington
| | - E. Brooke Lerner
- From the Department of Emergency Medicine (C.D.N., J.R.L.), Center for Policy and Research in Emergency Medicine, Oregon Health and Science University, Portland, Oregon; Department of Surgery (P.E.F.), University of Tennessee Health Science Center, Memphis, Tennessee; Department of Surgery (M.G.), University of Rochester, Rochester, New York; Committee on Trauma (H.N.M., M.N., M.D., J.D.), American College of Surgeons, Chicago, Illinois; Department of Surgery (G.J.J.), UC Davis Health, Sacramento, California; Department of Emergency Medicine (E.B.L.), University at Buffalo, Buffalo, New York; Department of Surgery (M.E.F.), University of Louisville School of Medicine, Norton Children's Hospital, Louisville, Kentucky; Maryland Institute for Emergency Medical Services Systems (T.R.D.), Baltimore, Maryland; Division of Trauma and General Surgery, Department of Surgery (J.B.B.), University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania; Department of Surgery (E.M.B.), University of Washington, Seattle, Washington
| | - Mary E. Fallat
- From the Department of Emergency Medicine (C.D.N., J.R.L.), Center for Policy and Research in Emergency Medicine, Oregon Health and Science University, Portland, Oregon; Department of Surgery (P.E.F.), University of Tennessee Health Science Center, Memphis, Tennessee; Department of Surgery (M.G.), University of Rochester, Rochester, New York; Committee on Trauma (H.N.M., M.N., M.D., J.D.), American College of Surgeons, Chicago, Illinois; Department of Surgery (G.J.J.), UC Davis Health, Sacramento, California; Department of Emergency Medicine (E.B.L.), University at Buffalo, Buffalo, New York; Department of Surgery (M.E.F.), University of Louisville School of Medicine, Norton Children's Hospital, Louisville, Kentucky; Maryland Institute for Emergency Medical Services Systems (T.R.D.), Baltimore, Maryland; Division of Trauma and General Surgery, Department of Surgery (J.B.B.), University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania; Department of Surgery (E.M.B.), University of Washington, Seattle, Washington
| | - Theodore R. Delbridge
- From the Department of Emergency Medicine (C.D.N., J.R.L.), Center for Policy and Research in Emergency Medicine, Oregon Health and Science University, Portland, Oregon; Department of Surgery (P.E.F.), University of Tennessee Health Science Center, Memphis, Tennessee; Department of Surgery (M.G.), University of Rochester, Rochester, New York; Committee on Trauma (H.N.M., M.N., M.D., J.D.), American College of Surgeons, Chicago, Illinois; Department of Surgery (G.J.J.), UC Davis Health, Sacramento, California; Department of Emergency Medicine (E.B.L.), University at Buffalo, Buffalo, New York; Department of Surgery (M.E.F.), University of Louisville School of Medicine, Norton Children's Hospital, Louisville, Kentucky; Maryland Institute for Emergency Medical Services Systems (T.R.D.), Baltimore, Maryland; Division of Trauma and General Surgery, Department of Surgery (J.B.B.), University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania; Department of Surgery (E.M.B.), University of Washington, Seattle, Washington
| | - Joshua B. Brown
- From the Department of Emergency Medicine (C.D.N., J.R.L.), Center for Policy and Research in Emergency Medicine, Oregon Health and Science University, Portland, Oregon; Department of Surgery (P.E.F.), University of Tennessee Health Science Center, Memphis, Tennessee; Department of Surgery (M.G.), University of Rochester, Rochester, New York; Committee on Trauma (H.N.M., M.N., M.D., J.D.), American College of Surgeons, Chicago, Illinois; Department of Surgery (G.J.J.), UC Davis Health, Sacramento, California; Department of Emergency Medicine (E.B.L.), University at Buffalo, Buffalo, New York; Department of Surgery (M.E.F.), University of Louisville School of Medicine, Norton Children's Hospital, Louisville, Kentucky; Maryland Institute for Emergency Medical Services Systems (T.R.D.), Baltimore, Maryland; Division of Trauma and General Surgery, Department of Surgery (J.B.B.), University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania; Department of Surgery (E.M.B.), University of Washington, Seattle, Washington
| | - Eileen M. Bulger
- From the Department of Emergency Medicine (C.D.N., J.R.L.), Center for Policy and Research in Emergency Medicine, Oregon Health and Science University, Portland, Oregon; Department of Surgery (P.E.F.), University of Tennessee Health Science Center, Memphis, Tennessee; Department of Surgery (M.G.), University of Rochester, Rochester, New York; Committee on Trauma (H.N.M., M.N., M.D., J.D.), American College of Surgeons, Chicago, Illinois; Department of Surgery (G.J.J.), UC Davis Health, Sacramento, California; Department of Emergency Medicine (E.B.L.), University at Buffalo, Buffalo, New York; Department of Surgery (M.E.F.), University of Louisville School of Medicine, Norton Children's Hospital, Louisville, Kentucky; Maryland Institute for Emergency Medical Services Systems (T.R.D.), Baltimore, Maryland; Division of Trauma and General Surgery, Department of Surgery (J.B.B.), University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania; Department of Surgery (E.M.B.), University of Washington, Seattle, Washington
| | - the Writing Group for the 2021 National Expert Panel on Field Triage
- From the Department of Emergency Medicine (C.D.N., J.R.L.), Center for Policy and Research in Emergency Medicine, Oregon Health and Science University, Portland, Oregon; Department of Surgery (P.E.F.), University of Tennessee Health Science Center, Memphis, Tennessee; Department of Surgery (M.G.), University of Rochester, Rochester, New York; Committee on Trauma (H.N.M., M.N., M.D., J.D.), American College of Surgeons, Chicago, Illinois; Department of Surgery (G.J.J.), UC Davis Health, Sacramento, California; Department of Emergency Medicine (E.B.L.), University at Buffalo, Buffalo, New York; Department of Surgery (M.E.F.), University of Louisville School of Medicine, Norton Children's Hospital, Louisville, Kentucky; Maryland Institute for Emergency Medical Services Systems (T.R.D.), Baltimore, Maryland; Division of Trauma and General Surgery, Department of Surgery (J.B.B.), University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania; Department of Surgery (E.M.B.), University of Washington, Seattle, Washington
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26
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Zhou M, Liao J, Li G, Yu Z, Xie D, Zhou H, Wang F, Ren Y, Xu R, Dai Y, Wang J, Huang J, Zhang R. Expandable carboxymethyl chitosan/cellulose nanofiber composite sponge for traumatic hemostasis. Carbohydr Polym 2022; 294:119805. [DOI: 10.1016/j.carbpol.2022.119805] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 06/24/2022] [Accepted: 06/28/2022] [Indexed: 11/16/2022]
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27
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AAST multicenter prospective analysis of prehospital tourniquet use for extremity trauma. J Trauma Acute Care Surg 2022; 92:997-1004. [PMID: 35609289 DOI: 10.1097/ta.0000000000003555] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Tourniquet use for extremity hemorrhage control has seen a recent increase in civilian usage. Previous retrospective studies demonstrated that tourniquets improve outcomes for major extremity trauma (MET). No prospective study has been conducted to date. The objective of this study was to evaluate outcomes in MET patients with prehospital tourniquet use. We hypothesized that prehospital tourniquet use in MET decreases the incidence of patients arriving to the trauma center in shock. METHODS Data were collected prospectively for adult patients with MET at 26 Level I and 3 Level II trauma centers from 2015 to 2020. Limbs with tourniquets applied in the prehospital setting were included in the tourniquet group and limbs without prehospital tourniquets were enrolled in the control group. RESULTS A total of 1,392 injured limbs were enrolled with 1,130 tourniquets, including 962 prehospital tourniquets. The control group consisted of 262 limbs without prehospital tourniquets and 88 with tourniquets placed upon hospital arrival. Prehospital improvised tourniquets were placed in 42 patients. Tourniquets effectively controlled bleeding in 87.7% of limbs. Tourniquet and control groups were similarly matched for demographics, Injury Severity Score, and prehospital vital signs (p > 0.05). Despite higher limb injury severity, patients in the tourniquet group were less likely to arrive in shock compared with the control group (13.0% vs. 17.4%, p = 0.04). The incidence of limb complications was not significantly higher in the tourniquet group (p > 0.05). CONCLUSION This study is the first prospective analysis of prehospital tourniquet use for civilian extremity trauma. Prehospital tourniquet application was associated with decreased incidence of arrival in shock without increasing limb complications. We found widespread tourniquet use, high effectiveness, and a low number of improvised tourniquets. This study provides further evidence that tourniquets are being widely and safely adopted to improve outcomes in civilians with MET. LEVEL OF EVIDENCE Therapeutic/Care Management; Level IV.
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28
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Tatebe LC, Schlanser V, Hampton D, Chang G, Hanson I, Doherty J, Issa N, Ghandour H, Kingsley S, Stewart A, Anstadt M, Dennis A. The tight rope act: A multicenter regional experience of tourniquets in acute trauma resuscitation. J Trauma Acute Care Surg 2022; 92:890-896. [PMID: 34882594 DOI: 10.1097/ta.0000000000003491] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND As tourniquets have become more prevalent, device use has been questioned. This study sought to characterize the incidence, indication, and efficacy of tourniquet placement in acute trauma resuscitation. METHODS Nine regional level 1 trauma centers prospectively enrolled for 12 months adult patients (18 years or older) who had a tourniquet placed. Age, sex, mechanism, tourniquet type, indication, applying personnel, location placed, level of occlusion, and degree of hemostasis were collected. Major vascular injury, imaging and operations performed, and outcomes were assessed. Analyses were performed with significance at p < 0.05. RESULTS A total of 216 tourniquet applications were reported on 209 patients. There were significantly more male patients (183 [88%]) and penetrating injuries (186 [89%]) with gunshots being most common (127 [61%]). Commercial tourniquets were most often used (205 [95%]). Ninety-two percent were placed in the prehospital setting (by fire/paramedics, 56%; police, 33%; bystanders, 2%). The most common indications were pooling (47%) and pulsatile (32%) hemorrhage. Only 2% were for amputation. The most frequent location was high proximal extremity (70%). Four percent were placed over the wound, and 0.5% were distal to the wound. Only 61% of applications were arterial occlusive. Median application time was 30 minutes (interquartile range, 20-40 minutes). Imaging was performed in 54% of patients. Overall, 36% had a named arterial injury. Tourniquet application failed to achieve hemostasis in 22% of patients with a named vascular injury. There was no difference in hemostasis between those with and without vascular injury (p = 0.12) or between who placed the tourniquet (p = 0.07). Seventy patients (34%) required vascular operations. Thirty-four percent of patients were discharged home without admission. CONCLUSION Discerning which injuries require tourniquets over pressure dressings remains elusive. Trained responders had high rates of superfluous and inadequate deployments. As tourniquets continue to be disseminated, emphasis should be placed on improving education, device development, and quality control. LEVEL OF EVIDENCE Prognostic/Epidemiologic, Level III.
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Affiliation(s)
- Leah Carey Tatebe
- From the Department of Trauma and Burn Surgery (L.C.T., V.S., A.D.), Cook County Health, Rush University, Midwestern University, Chicago, Illinois; Department of Surgery (D.H.), University of Chicago, Chicago, Illinois; Department of Surgery (G.C., I.H.), Mount Sinai Hospital, Chicago, Illinois; Department of Surgery (J.D.), Advocate Christ Medical Center, Oak Lawn, Illinois; Department of Surgery (N.I.), Northwestern University, Chicago, Illinois; Department of Surgery (H.G., S.K.), Advocate Illinois Masonic Medical Center, Chicago, Illinois; Department of Surgery (A.S.), Advocate Lutheran General Hospital, Park Ridge, Illinois; and Department of Surgery (M.A.), Loyola University, Maywood, Illinois
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Richards JE, Fedeles BT. Coagulation Management in Trauma: Do We Need a Viscoelastic Hemostatic Assay? CURRENT ANESTHESIOLOGY REPORTS 2022. [DOI: 10.1007/s40140-022-00532-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Prehospital Tourniquet Usage and Diabetes Mellitus Associated with Increased Incidence, Odds, and Risk of Acute Kidney Injury: A Pilot Study. Prehosp Disaster Med 2022; 37:360-364. [PMID: 35440349 DOI: 10.1017/s1049023x2200067x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
INTRODUCTION Tourniquets are the standard of care for civilian and military prehospital treatment of massive extremity hemorrhages. Over the past 17 years, multiple military studies have demonstrated rare complications related to tourniquet usage. These studies may not translate well to civilian populations due to differences in baseline health. Experimental studies have demonstrated increased rates of post-traumatic acute kidney injuries (AKIs) in rats with obesity and increased oxidative stress, suggesting that comorbidities may affect AKI incidence with tourniquet usage. Two recently published retrospective studies, focused on the safety of tourniquets deployed within civilian sectors, documented increased incidence of AKI in patients with a prehospital tourniquet as compared to previously published military results. This study aimed to provide descriptive data concerning the association between the use of prehospital tourniquets and AKIs amongst civilian patient populations as AKIs increase mortality in hospitalized patients. METHODS This was a single-center, observational, cross-sectional, pilot study involving chart review of participants presenting to a tertiary Level 1 trauma center. Patient data were extracted from prehospital and hospital electronic medical records. For this study, AKI was defined using the Kidney Disease: Improving Global Outcomes (KDIGO) guidelines. RESULTS A total of 255 participants were included. Participants with a history of diabetes mellitus had a significantly higher incidence of AKI as compared to those without. Analysis revealed an increased odds of AKI with diabetes in association to the use of a prehospital tourniquet. Participants with diabetes had an increased relative risk of AKI in association to the use of a prehospital tourniquet. The incidence of AKI was statistically higher than what was previous reported in the military population in association with the use of a prehospital tourniquet. CONCLUSION The incidence of AKIs was higher than previously reported. Patients with diabetes had an associated higher risk and incidence of sustaining an AKI after the use of a prehospital tourniquet in association with the use of a prehospital tourniquet. This may be due to the known deleterious effects of diabetes mellitus on renal function. This study provides clinically relevant data that warrant further multi-site investigations to further investigate this study's associated findings and potential causation. It also stresses the need to assess whether renally-impacting environmental and nutritional stressors affect AKI rates amongst military personnel and others in which prehospital tourniquets are used.
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Bedri H, Ayoub H, Engelbart JM, Lilienthal M, Galet C, Skeete DA. Tourniquet Application for Bleeding Control in a Rural Trauma System: Outcomes and Implications for Prehospital Providers. PREHOSP EMERG CARE 2022; 26:246-254. [PMID: 33400604 DOI: 10.1080/10903127.2020.1868635] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Introduction: Uncontrolled bleeding is a preventable cause of death in rural trauma. Herein, we examined the appropriateness, effectiveness, and safety of tourniquet application for bleeding control in a rural trauma system.Methods: Medical records of adult patients admitted to our academic Level I trauma center between July 2015 and December 2018 were retrospectively reviewed. Demographics (age, gender), injury (Injury severity score, Glascow Coma scale, mechanism of injury), tourniquet (type, tourniquet application site, tourniquet duration, place of application and removal, indication), and outcome data (complications such as amputation, acute kidney injury, rhabdomyolysis, or nerve palsy and mortality) were collected. Tourniquet indications, effectiveness, and complications were evaluated. Data were compared to those in urban settings.Results: Ninety-two patients (94 tourniquets) were identified, of which 58.7% incurred penetrating injuries. Eighty-seven tourniquets (92.5%) were applied in the prehospital setting. Twenty tourniquets (21.3%) were applied to patients without an appropriate indication. Two of these tourniquets were applied in a hospital setting, while 18 occurred in the prehospital setting (p = 0.638). Patients with a non-indicated tourniquet presented with a higher hemoglobin level on admission, received less packed red blood cell units within the first 24 hours of hospitalization, and were less likely to require surgery for hemostasis. None of the non-indicated tourniquets led to a complication. Indicated tourniquets were deemed ineffective in seven cases (9.5%); they were all applied in the prehospital setting. The average tourniquet time was 123 min in rural vs. 48 min in urban settings, p < 0.001. There was no significant difference in mortality, amputation rates and incidence of nerve palsy between the rural and urban settings.Conclusion: Even with long transport times, early tourniquet application for hemorrhage control in rural settings is safe with no significant attributable morbidity and mortality compared to published studies on urban civilian tourniquet use. The observed rates of non-indicated and ineffective tourniquets indicate suboptimal tourniquet usage and application. Opportunity exists for standardized hemorrhage control training on the use of direct pressure and pressure dressings, indications for tourniquet use, and effective tourniquet application.
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Frisby DM, Tu H, Qian J, Zhang D, Barksdale AN, Wadman MC, Cooper JS, Li YL. Hyperbaric oxygen therapy does not alleviate tourniquet-induced acute ischemia-reperfusion injury in mouse skeletal muscles. Injury 2022; 53:368-375. [PMID: 34876256 DOI: 10.1016/j.injury.2021.11.046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Accepted: 11/20/2021] [Indexed: 02/02/2023]
Abstract
During tourniquet application, blood flow is restricted to a limb to stop excessive limb hemorrhage in a trauma setting and to create a bloodless operating field in the surgical setting. During tourniquet-related ischemia, aerobic respiration stops, and ATP is depleted, and during subsequent reperfusion, there is an increase in reactive oxygen species (ROS) production and other endogenous substances, which leads to acute ischemia-reperfusion (IR) injuries, including tissue necrosis and skeletal muscle contractile dysfunction. Hyperbaric oxygen (HBO) therapy can increase the arterial oxygen tension in the tissues of patients with general hypoxia/anoxia, including carbon monoxide poisoning, circulatory arrest, and cerebral and myocardial ischemia. Here, we studied the protective effects of HBO pretreatment with 100% oxygen at 2.5 ATA against tourniquet/IR injury in mice. After one hour of HBO therapy with 100% oxygen at 2.5 ATA was administered to C57/BL6 mice, a rubber band was placed at the hip joint of the unilateral hindlimb to induce 3 h of ischemia and then released for 48 h of reperfusion. We analyzed gastrocnemius muscle morphology and contractile function and measured the levels of ATP and ROS accumulation in the muscles. HBO pretreatment did not improve tourniquet/IR-injured gastrocnemius muscle morphology and muscle contraction. Tourniquet/IR mice with HBO pretreatment showed no increase in ATP levels in IR tissues, but they did have a decreased amount of ROS accumulation in the muscles, compared to IR mice with no HBO pretreatment. These data suggest that one hour of HBO pretreatment with 100% oxygen at 2.5 ATA increases the antioxidant response to lower ROS accumulation but does not increase ATP levels in IR muscles and improve tourniquet/IR-injured muscle morphology and contractile function.
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Affiliation(s)
- Devin M Frisby
- Department of Emergency Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Huiyin Tu
- Department of Emergency Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Junliang Qian
- Department of Emergency Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Dongze Zhang
- Department of Emergency Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Aaron N Barksdale
- Department of Emergency Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Michael C Wadman
- Department of Emergency Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Jeffrey S Cooper
- Department of Emergency Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA.
| | - Yu-Long Li
- Department of Emergency Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA.
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A review of treatments for non-compressible torso hemorrhage (NCTH) and internal bleeding. Biomaterials 2022; 283:121432. [DOI: 10.1016/j.biomaterials.2022.121432] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 01/26/2022] [Accepted: 02/17/2022] [Indexed: 12/12/2022]
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Stopping extremity hemorrhage: More than just a tourniquet. Surg Open Sci 2022; 7:42-45. [PMID: 35028549 PMCID: PMC8741618 DOI: 10.1016/j.sopen.2021.11.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Accepted: 11/11/2021] [Indexed: 11/21/2022] Open
Abstract
Major extremity hemorrhage is a surgical emergency, and the physical examination is essential to help dictate appropriate clinical decision making. Hard signs that require immediate surgical intervention include ongoing bleeding, expanding hematoma, ischemic limb, as well as partial/complete amputation. Packing, compression, balloon tamponade, and tourniquets are very helpful to temporize major hemorrhage. Mangled extremities are very challenging to manage and require a multidisciplinary approach. Temporary vascular shunts are excellent tools for vascular/orthopedic damage control and for temporary stabilization prior to transport for definitive care.
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Sharrock M. The mangled extremity: assessment, decision making and outcomes. Acta Orthop Belg 2021; 87:755-760. [PMID: 35172444 DOI: 10.52628/87.4.22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The management of the mangled extremity continues to pose a significant challenge for ortho- paedic trauma surgeons. This article provides a comprehensive, up-to-date literature review on the assessment of complex limb injuries, and the variables that affect decision-making and outcomes in both limb salvage and amputation. Initial assessment involves using a systematic approach, saving life before limb, with early involvement of the relevant surgical specialities and multidisciplinary team. The decision to attempt limb salvage or perform amputation can be extremely difficult. Scoring systems can be used as a guide but should not be wholly relied upon; instead more emphasis should be placed on the surgeon's experience, extent of soft tissue damage, and patient factors and wishes. Outcomes following amputation versus limb salvage are comparable, with some studies suggesting amputation may be favourable. It is important to advise patients and families on what treatment is in their best interest so they can make an informed decision, and this must utilise a multidisciplinary approach.
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Mormando G, Paganini M, Alexopoulos C, Savino S, Bortoli N, Pomiato D, Graziano A, Navalesi P, Fabris F. Life-Saving Procedures Performed While Wearing CBRNe Personal Protective Equipment: A Mannequin Randomized Trial. Simul Healthc 2021; 16:e200-e205. [PMID: 33428358 DOI: 10.1097/sih.0000000000000540] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
INTRODUCTION Chemical-biological-radiological-nuclear-explosive (CBRNe) are complex events. Decontamination is mandatory to avoid harm and contain hazardous materials, but can delay care. Therefore, the stabilization of patients in the warm zone seems reasonable, but research is limited. Moreover, subjects involved in biological events are considered infectious even after decontamination and need to be managed while wearing personal protective equipment (PPE), as seen with Ebola and COVID-19 pandemic. With this simulation mannequin trial, we assessed the impact of CBRNe PPE on cardiopulmonary resuscitation and combat casualty care procedures. METHODS We compared procedures performed by emergency medicine and anesthesiology senior residents, randomized in 2 groups (CBRNe PPE vs. no PPE). Chest compression (CC) depth was defined as the primary outcome. Time to completion was calculated for the following: tourniquet application; tension pneumothorax needle decompression; peripheral venous access (PVA) and intraosseous access positioning; and drug preparation and administration. A questionnaire was delivered to evaluate participants' perception. RESULTS Thirty-six residents participated. No significant difference between the groups in CC depth (mean difference = 0.26 cm [95% confidence interval = -0.26 to 0.77 cm, P = 0.318]), as well as for CC rate, CC complete release, and time for drugs preparation and administration was detected. The PPE contributed to significantly higher times for tourniquet application, tension pneumothorax decompression, peripheral venous access, and intraosseous access positioning. The residents found simulation relevant to the residencies' core curriculum. CONCLUSIONS This study suggests that cardiopulmonary resuscitation can be performed while wearing PPE without impacting quality, whereas other tasks requiring higher dexterity can be significantly impaired by PPE.Trial Registration Number: NCT04367454, April 29, 2020 (retrospectively registered).
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Affiliation(s)
- Giulia Mormando
- From the Department of Medicine (DIMED) (G.M., M.P., C.A., S.S., F.F.), University of Padova, Padova; Venice Emergency Medical Service Operations Center (N.B., D.P.), Venezia; and Istituto di Anestesia e Rianimazione-Azienda Ospedaliera Universitaria di Padova (A.G., P.N.), Padova, Italy
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Schlanser VL, Tatebe LC, Karalius VP, Liesen E, Pekarek S, Impens A, Ivkovic K, Bajani F, Khalifa A, Dennis AJ. The Windlass Tourniquet: Is It Taking the Wind Out of the "Stop the Bleed" Sails? J Surg Res 2021; 271:91-97. [PMID: 34856457 DOI: 10.1016/j.jss.2021.09.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 09/07/2021] [Accepted: 09/22/2021] [Indexed: 10/19/2022]
Abstract
BACKGROUND Civilians are often first-line responders in hemorrhage control; however, windlass tourniquets are not intuitive. Untrained users reading enclosed instructions failed in 38.2% of tourniquet applications. This prospective follow-up study replicated testing following Stop the Bleed (STB) training. MATERIALS AND METHODS One and six months following STB, first-year medical students were randomly assigned a windlass tourniquet with enclosed instructions. Each was given one minute to read instructions and two minutes to apply the windlass tourniquet on the TraumaFX HEMO trainer. Demographics, time to read instructions and stop bleeding, blood loss, and simulation success were analyzed. RESULTS 100 students received STB training. 31 and 34 students completed tourniquet testing at one month and six months, respectively. At both intervals, 38% of students were unable to control hemorrhage (P = 0.97). When compared to the pilot study without STB training (median 48 sec, IQR 33-60 sec), the time taken to read the instructions was shorter one month following STB (P <0.001), but there was no difference at 6 months (P = 0.1). Incorrect placement was noted for 19.4% and 23.5% of attempts at 1 and 6 months. Male participants were more successful in effective placement at one month (93.3% versus 31.3%, P = 0.004) and at six months (77.8% versus 43.8%, p = 0.04). CONCLUSIONS Skills decay for tourniquet application was observed between 1 and 6 months following STB. Instruction review and STB produced the same hemorrhage control rates as reading enclosed instructions without prior training. Training efforts must continue; but an intuitive tourniquet relying less on mechanical advantage is needed.
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Affiliation(s)
- Victoria L Schlanser
- Department of Trauma and Burn Surgery, Cook County Health, Chicago, Illinois; Department of Surgery, Midwestern University, Downers Grove, Illinois; Department of Surgery, Rush University, Chicago, Illinois.
| | - Leah C Tatebe
- Department of Trauma and Burn Surgery, Cook County Health, Chicago, Illinois; Department of Surgery, Midwestern University, Downers Grove, Illinois; Department of Surgery, Rush University, Chicago, Illinois
| | - Vytas P Karalius
- Department of Trauma and Burn Surgery, Cook County Health, Chicago, Illinois; Department of Emergency Medicine, Northwestern University, Chicago, Illinois
| | - Erik Liesen
- Department of Trauma and Burn Surgery, Cook County Health, Chicago, Illinois; Department of Surgery, Midwestern University, Downers Grove, Illinois
| | - Sydney Pekarek
- Department of Trauma and Burn Surgery, Cook County Health, Chicago, Illinois; Department of Surgery, Midwestern University, Downers Grove, Illinois
| | - Ann Impens
- Institute for Healthcare Innovation, Midwestern University, Downers Grove, Illinois
| | - Katarina Ivkovic
- Institute for Healthcare Innovation, Midwestern University, Downers Grove, Illinois
| | - Francesco Bajani
- Department of Trauma and Burn Surgery, Cook County Health, Chicago, Illinois
| | - Andrew Khalifa
- Department of Trauma and Burn Surgery, Cook County Health, Chicago, Illinois
| | - Andrew J Dennis
- Department of Trauma and Burn Surgery, Cook County Health, Chicago, Illinois; Department of Surgery, Midwestern University, Downers Grove, Illinois; Department of Surgery, Rush University, Chicago, Illinois
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Borgers F, Van Boxstael S, Sabbe M. Is tactical combat casualty care in terrorist attacks suitable for civilian first responders? J Trauma Acute Care Surg 2021; 91:e86-e92. [PMID: 34238863 DOI: 10.1097/ta.0000000000003337] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
INTRODUCTION Prehospital management of intentional mass casualty incidents is a unique challenge to Emergency Medical Services. Tactical Combat Casualty Care (TCCC) and the use of tourniquets for extremity hemorrhage have already proven to reduce mortality on the battlefield. This literature review aims to determine the place of these military concepts in a civilian high-threat prehospital setting. METHODS The PubMed database was searched for articles published between January 1, 2000, and December 1, 2019, containing descriptions, discussions, or experiences of the application of tourniquets or other TCCC-based interventions in the civilian prehospital setting. Data extraction focused on identifying important common themes in the articles. RESULTS Of the 286 identified articles, 30 were selected for inclusion. According to the Oxford Centre for Evidence-based Medicine Levels of Evidence, overall level of evidence was low. Most articles were observational, retrospective cohort studies without a nontourniquet control group. Outcome measures and variables were variably reported. Two articles specifically analyzed tourniquet use during high-threat situations, and three described their application by law enforcement personnel. Overall, tourniquets were found to be effective in stopping major limb bleeding. Reported mortality was low and related complications appeared to be infrequent. Only four articles mentioned the application of other TCCC-based maneuvers, such as airway and respiratory management. CONCLUSION This literature review shows that tourniquets appear to be safe tools associated with few complications and might be effective in controlling major bleeding in civilian limb trauma. For example, during mass casualty incidents, their use could be justified. Training and equipping ambulance and police services to deal with massive bleeding could likewise improve interoperability and victim survival in a civilian high-threat prehospital setting. More qualitative research is needed to further evaluate the effects of hemorrhage control training for first responders on patient outcomes. Literature describing the application of other TCCC-based principles is limited, which makes it difficult to draw conclusions regarding their use in a civilian setting. LEVEL OF EVIDENCE Systematic review, level III.
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Affiliation(s)
- Felix Borgers
- From the Department of Anesthesiology (F.B.), University Hospitals Leuven, Leuven, Belgium; Emergency Department (V.B.), ZOL Hospital Genk, Genk, Belgium; and Emergency Department (M.S.), University Hospitals Leuven, Leuven, Belgium
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Mikdad S, Mokhtari AK, Luckhurst CM, Breen KA, Liu B, Kaafarani HMA, Velmahos G, Mendoza AE, Bloemers FW, Saillant N. Implications of the national Stop the Bleed campaign: The swinging pendulum of prehospital tourniquet application in civilian limb trauma. J Trauma Acute Care Surg 2021; 91:352-360. [PMID: 33901049 DOI: 10.1097/ta.0000000000003247] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Prehospital tourniquet (PHT) utilization has increased in response to mass casualty events. We aimed to describe the incidence, therapeutic effectiveness, and morbidity associated with tourniquet placement in all patients treated with PHT application. METHODS A retrospective observational cohort study was performed to evaluate all adults with a PHT who presented at two Level I trauma centers between January 2015 and December 2019. Medically trained abstractors determined if the PHT was clinically indicated (placed for limb amputation, vascular hard signs, injury requiring hemostasis procedure, or significant documented blood loss). Prehospital tourniquets were further designated as appropriately or inappropriately applied (based on PHT anatomic placement location, occurrence of a venous tourniquet, or ischemic time defined as >2 hours). Statistical analyses were performed to generate primary and secondary results. RESULTS A total of 147 patients met study inclusion criteria, of which 70% met the criteria for trauma registry inclusion. Total incidence of PHT utilization increased from 2015 to 2019, with increasing proportions of PHTs placed by nonemergency medical service personnel. Improvised PHTs were frequently used. Prehospital tourniquets were clinically indicated in 51% of patients. Overall, 39 (27%) patients had a PHT that was inappropriately placed, five of which resulted in significant morbidity. CONCLUSION In summary, prehospital tourniquet application has become widely adopted in the civilian setting, frequently performed by civilian and nonemergency medical service personnel. Of PHTs placed, nearly half had no clear indication for placement and over a quarter of PHTs were misapplied with notable associated morbidity. Results suggest that the topics of clinical indication and appropriate application of tourniquets may be important areas for continued focus in future tourniquet educational programs, as well as future quality assessment efforts. LEVEL OF EVIDENCE Epidemiological, level III; Therapeutic, level IV.
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Affiliation(s)
- Sarah Mikdad
- From the Division of Trauma, Emergency Surgery and Surgical Critical Care (S.M., A.K.M., C.M.L., K.A.B., B.L., H.M.A.K., G.V., A.E.M., N.S.), Massachusetts General Hospital, Boston, Harvard Medical School, Boston, Massachusetts; and Department of Trauma Surgery (S.M., F.W.B.), Amsterdam UMC, Amsterdam, the Netherlands
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Treager C, Lopachin T, Mandichak S, Kinney B, Bohan M, Boboc M, Go C, Friedrich E, Stuart S. A comparison of efficacy, efficiency, and durability in novel tourniquet designs. J Trauma Acute Care Surg 2021; 91:S139-S145. [PMID: 33797479 DOI: 10.1097/ta.0000000000003216] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND Exsanguination due to extremity hemorrhage is a major cause of preventable traumatic deaths. Extremity tourniquet use has been shown to be safe and improve survival. The purpose of this study was to compare the efficacy, efficiency, and durability of the Generation 7 Combat Application Tourniquet (CAT; North American Rescue, Greer, SC), the Tactical Mechanical Tourniquet (TMT; Combat Medical Systems, Harrisburg, NC), and the SOF Tactical Tourniquet-Wide (SOFTT-W; Tactical Medical Solutions, Anderson, SC). METHODS This study was a three-phase randomized, cross-over trial. In successive trials, subjects were timed during the application of each tourniquet to the upper and lower extremity. Following successful lower extremity application, subjects low crawled 25 ft and then were dragged 25 ft, after which effectiveness was reassessed, as defined by the cessation of distal pulses by Doppler ultrasound. RESULTS In arm application, both the CAT and TMT had significantly less failure rates than the SOFTT-W (5.56%, 19.44%, 58.33%), with the CAT being the fastest tourniquet when compared with TMT and SOFTT-W (37.8 seconds, 65.01 seconds, 63.07 seconds). In leg application, the CAT had significantly less rates of failure when compared with the SOFTT-W, but there was no other significant difference between the tourniquets (27.78%, 44.44%, 61.11%). In addition, the CAT was significantly faster than both the TMT and SOFTT-W when applied to the leg (8.33 seconds, 40.96 seconds, 34.5 seconds). There was no significant difference in tourniquet failure rates between the three tourniquets after subject maneuvers in phase 3 (34.29%, 42.86%, 45.45%). DISCUSSION The CAT is as effective as the TMT and significantly more effective than the SOFTT-W. In addition, the CAT demonstrated shorter application times than either the TMT or SOFTT-W. However, there was no significant difference between the three tourniquets in their ability to maintain pulselessness after subject maneuvers. LEVEL OF EVIDENCE Care management, level II.
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Affiliation(s)
- Christopher Treager
- From the Department of Emergency Medicine (C.T., T.L., S.M., S.S.), Naval Medical Readiness Training Command, Portsmouth; Combat Trauma Research Group (C.T., T.L., S.M., M. Bohan, M. Boboc, E.F., S.S.), Naval Medical Readiness Training Command, General Dynamics Information Technology, Fairfax, Virginia; Department of Emergency Medicine (B.K.), Naval Medical Readiness Training Command, Guam; and Eastern Virginia Medical School (C.G.), Norfolk, Virginia
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Goolsby C, Schuler K, Rodzik R, Charlton N, Lala V, Anderson K, Pellegrino J. The FAST VIP (First Aid for Severe Trauma “Virtual” in-Person) Educational Study. West J Emerg Med 2021; 22:951-957. [PMID: 35354006 PMCID: PMC8328158 DOI: 10.5811/westjem.2021.2.50033] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Accepted: 02/19/2021] [Indexed: 11/20/2022] Open
Abstract
Introduction Trauma is the leading cause of death for young Americans. Increased school violence, combined with an emphasis on early hemorrhage control, has boosted demand to treat injuries in schools. Meanwhile, coronavirus disease 2019 (COVID-19) has made educating the public about trauma more difficult. A federally funded high school education program in development, called First Aid for Severe Trauma™ (FAST™), will teach students to aid the severely injured. The program will be offered in instructor-led, web-based, and blended formats. We created a program to prepare high school teachers to become FAST instructors via “virtual” in-person (VIP) instruction. We used a webinar followed by VIP skills practice, using supplies shipped to participants’ homes. To our knowledge, no prior studies have evaluated this type of mass, widely distributed, VIP education. Methods This study is a prospective, single-arm, educational cohort study. We enrolled a convenience sample of all high school teachers attending FAST sessions at the Health Occupations Students of America–Future Health Professionals International Leadership Conference. Half of the participants were randomized to complete the Stop the Bleed Education Assessment Tool (SBEAT) prior to the webinar, and the other completed it afterward; SBEAT is a validated tool to measure learning of bleeding competencies. We then performed 76 VIP video-training sessions from June–August 2020. The FAST instructors assessed each participant’s ability to apply a tourniquet and direct pressure individually, then provided interactive group skills training, and finally re-evaluated each participant’s performance post-training. Results A total of 190 (96%) participants successfully applied a tourniquet after VIP training, compared to 136 (68%) prior to training (P < 0.001). Participants significantly improved their ability to apply direct pressure: 116 (56%) pre-assessment vs 204 (100%) post-assessment (P < 0.001). The mean score for the SBEAT increased significantly from pre-training to post-training: 2.09 with a standard deviation (SD) of 0.97 to 2.55 post-training with a SD of 0.72 (P < 0.001). Conclusion This study suggests that a webinar combined with VIP training is effective for teaching tourniquet and direct-pressure application skills, as well as life-threatening bleeding knowledge. VIP education may be useful for creating resuscitative medicine instructors from distributed locations, and to reach learners who cannot attend classroom-based instruction.
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Affiliation(s)
- Craig Goolsby
- Uniformed Services University of the Health Sciences, Department of Military & Emergency Medicine, Bethesda, Maryland; Uniformed Services University of the Health Science, National Center for Disaster Medicine and Public Health Medicine, Bethesda, Maryland
| | - Keke Schuler
- Uniformed Services University of the Health Science, National Center for Disaster Medicine and Public Health Medicine, Bethesda, Maryland; The Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc., Bethesda, Maryland
| | - Raphaelle Rodzik
- Uniformed Services University of the Health Science, National Center for Disaster Medicine and Public Health Medicine, Bethesda, Maryland; The Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc., Bethesda, Maryland
| | - Nathan Charlton
- University of Virginia School of Medicine, Department of Emergency Medicine, Charlottesville, Virginia
| | - Vidya Lala
- Uniformed Services University of the Health Sciences, School of Medicine, Bethesda, Maryland
| | - Kevin Anderson
- Uniformed Services University of the Health Sciences, School of Medicine, Bethesda, Maryland
| | - Jeffrey Pellegrino
- University of Akron, Department of Disaster Sciences and Emergency Services, Akron, Ohio
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Barnard LM, Guan S, Zarmer L, Mills B, Blackwood J, Bulger E, Yang BY, Johnston P, Vavilala MS, Sayre MR, Rea TD, Murphy DL. Prehospital tourniquet use: An evaluation of community application and outcome. J Trauma Acute Care Surg 2021; 90:1040-1047. [PMID: 34016927 DOI: 10.1097/ta.0000000000003145] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND There is substantial investment in layperson and first responder training involving tourniquet use for hemorrhage control. Little is known however about prehospital tourniquet application, field conversion, or outcomes in the civilian setting. We describe the experience of a metropolitan region with prehospital tourniquet application. METHODS We conducted a retrospective cohort study characterizing prehospital tourniquet use treated by emergency medical services (EMS) in King County, Washington, from January 2018 to June 2019. Emergency medical services and hospital records were abstracted for demographics, injury mechanism, tourniquet details, clinical care, and outcomes. We evaluated the incidence of tourniquet application, who applied the device (EMS, law enforcement, or layperson), and subsequent course. RESULTS A total of 168 patients received tourniquet application, an incidence of 5.1 per 100,000 person-years and 3.48 per 1,000 EMS responses for trauma. Tourniquets were applied for penetrating trauma (64%), blunt trauma (30%), and bleeding ateriovenous fistulas (7%). A subset was critically ill: 13% had systolic blood pressures of <90 mm Hg, 8% had Glasgow Coma Scale score of <13, and 3% had cardiac arrest. Among initial applications, 48% were placed by law enforcement, 33% by laypersons, and 18% by EMS. Among tourniquets applied by layperson or law enforcement (n = 137), EMS relied solely on the original tourniquet in 45% (n = 61), placed a second tourniquet in 20% (n = 28), and removed the tourniquet without replacement in 35% (n = 48). Overall, 24% required massive transfusion, 59% underwent urgent surgery, and 21% required vascular surgery. Mortality was 3% (n = 4). At hospital discharge, the tourniquet limb was fully functional in 81%, partially functional in 10%, and nonfunctional in 9%; decreased function was not attributed to tourniquet application. CONCLUSION The high rate of application, need for urgent hospital intervention in a subset, and low incidence of apparent complication suggest that efforts to increase access and early tourniquet use can provide public health benefit. LEVEL OF EVIDENCE Therapeutic, level IV.
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Affiliation(s)
- Leslie M Barnard
- From the Division of Emergency Medical Services Pubic Health Seattle & King County (L.M.B., S.G., J.B., T.D.R.), Seattle, Washington; Department of Neurobiology (L.Z.), University of California Los Angeles, Los Angeles, California; Harborview Injury Prevention and Research Center (B.M., M.S.V.), University of Washington, Seattle, Washington; Department of Epidemiology (B.M.), University of Washington, Seattle, Washington; Department of Surgery (E.B., P.J.), University of Washington, Seattle, Washington; Department of Emergency Medicine (B.Y.Y., M.R.S., D.L.M.), University of Washington, Seattle, Washington; Department of Anesthesiology and Pain Medicine (M.S.V.), University of Washington, Seattle, Washington; Seattle Fire Department (M.R.S.); and Department of Medicine (T.D.R.), University of Washington, Seattle, Washington
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Design and Development of a Hemorrhagic Trauma Simulator for Lower Limbs: A Pilot Study. SENSORS 2021; 21:s21113816. [PMID: 34073020 PMCID: PMC8198904 DOI: 10.3390/s21113816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Revised: 05/27/2021] [Accepted: 05/28/2021] [Indexed: 11/16/2022]
Abstract
One of the main preventable leading causes of death after a trauma injury is the hemorrhagic shock. Therefore, it is extremely important to learn how to control hemorrhages. In this paper, a hemorrhagic trauma simulator for lower limb has been developed and a pilot study has been accomplished to trail the simulator. Four different bleeding scenarios have been tested per participant, gathering information about the manual pressure exerted to control the bleeding. Data, altogether, from 54 hemorrhagic scenarios managed by final year medical students and doctors were gathered. Additionally, a post-simulation questionnaire, related to the usability of the simulator, was completed. All the participants managed to control the simulated bleeding scenarios, but the pressure exerted to control the four different scenarios is different depending if the trainee is a student or a doctor, especially in deep venous hemorrhages. This research has highlighted the different approach to bleeding control treatment between medical students and doctors. Moreover, this pilot study demonstrated the need to deliver a more effective trauma treatment teaching for hemorrhagic lesions and that hemorrhagic trauma simulators can be used to train and evaluate different scenarios.
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44
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Increased Use of Prehospital Tourniquet and Patient Survival: Los Angeles Countywide Study. J Am Coll Surg 2021; 233:233-239.e2. [PMID: 33895335 DOI: 10.1016/j.jamcollsurg.2021.03.023] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Revised: 03/08/2021] [Accepted: 03/22/2021] [Indexed: 10/21/2022]
Abstract
BACKGROUND Recent trends in prehospital tourniquet use remain underreported. In addition, the impact of prehospital tourniquet use on patient survival has not been evaluated in a population-level study. We hypothesized that prehospital tourniquets were used more frequently in Los Angeles County and their use was associated with improved patient survival. STUDY DESIGN This is a retrospective cohort study using a database maintained by the Los Angeles County Emergency Medical Services Agency. We included patients who sustained extremity vascular injuries between October 2015 and July 2019. Patients were divided into the following study groups: prehospital tourniquet and no-tourniquet group. Our primary end point was in-hospital mortality. The secondary outcomes included 4- and 24-hour transfusion requirements and delayed amputation. RESULTS A total of 944 patients met our inclusion criteria. Of those, 97 patients (10.3%) had prehospital tourniquets placed. The rate of tourniquet use increased linearly throughout our study period (goodness of fit, p = 0.014). In multivariable analysis, prehospital tourniquet use was significantly associated with improved mortality (adjusted odds ratio 0.32; 95% CI, 0.16 to 0.85; p = 0.032). Similarly, transfusion requirements were significantly lower within 4 hours (regression coefficient -547.76; 95% CI, -762.73 to -283.49; p < 0.001) and 24 hours (regression coefficient -1,389.82; 95% CI, -1,824.88 to -920.97; p < 0.001). There was no significant difference in delayed amputation rates (adjusted odds ratio 1.07; 95% CI, 0.21 to 10.88; p < 0.097). CONCLUSIONS Prehospital tourniquet use has been on the rise in Los Angeles County. Our results suggest that the use of prehospital tourniquets for extremity vascular injuries is associated with improved patient survival and decreased blood transfusion requirements, without an increase in delayed amputations.
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Cremonini C, Nee N, Demarest M, Piccinini A, Minneti M, Canamar CP, Benjami ER, Demetriades D, Inaba K. Evaluation of the efficacy of commercial and noncommercial tourniquets for extremity hemorrhage control in a perfused cadaver model. J Trauma Acute Care Surg 2021; 90:522-526. [PMID: 33230091 DOI: 10.1097/ta.0000000000003033] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND Tourniquets are a critical tool in the immediate response to life-threatening extremity hemorrhage; however, the optimal tourniquet type and effectiveness of noncommercial devices remain unclear. Our aim was to evaluate the efficacy of five tourniquets in a perfused-cadaver model. METHODS This prospective study used a perfused-cadaver model with standardized superficial femoral artery injury bleeding at 700 mL/min. Five tourniquets were tested: combat application tourniquet; rapid application tourniquet system; Stretch, Wrap, And Tuck Tourniquet; an improvised triangle bandage windlass; and a leather belt. Forty-eight medical students underwent a practical hands-on demonstration of each tourniquet. Using a random number generator, they placed the tourniquets on the bleeding cadaver in random order. Time to hemostasis, time to secure devices, estimated blood loss, and difficulty rating were assessed. A one-way repeated measures analysis of variance was used to compare efficacy between the tourniquets in achieving the outcomes. RESULTS The mean ± SD participant age was 25 ± 2.6 years, and 29 (60%) were male. All but one tourniquet was able to stop bleeding, but the rapid application tourniquet system had a 4% failure rate. Time to hemostasis and estimated blood loss did not differ significantly (p > 0.05). Stretch, Wrap, And Tuck Tourniquet required the longest time to be secured (47.8 ± 17.0 seconds), whereas the belt was the fastest (15.2 ± 6.5 seconds; p < 0.001). The improvised windlass was rated easiest to learn and apply, with 22 participants (46%) assigning a score of 1. CONCLUSION Four of five tourniquets evaluated, including both noncommercial devices, effectively achieved hemostasis. A standard leather belt was the fastest to place and was able to stop the bleeding. However, it required continuous pressure to maintain hemostasis. The improvised windlass was as effective as the commercial devices and was the easiest to apply. In an emergency setting where commercial devices are not available, improvised tourniquets may be an effective bridge to definitive care.
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Affiliation(s)
- Camilla Cremonini
- From the Division of Trauma, Emergency Surgery and Surgical Critical Care (C.C., N.N., M.D., A.P., M.M., E.R.B., D.D., K.I.), LAC+USC Medical Center, Keck School of Medicine, University of Southern California; Quality Improvement Department, LAC+USC Medical Center (C.P.C.), Los Angeles, California; and General, Emergency and Trauma Surgery Department (C.C.), Pisa University Hospital, Pisa, Italy
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Goolsby C, Rojas LE, Rodzik RH, Gausche-Hill M, Neal MD, Levy MJ. High-School Students Can Stop the Bleed: A Randomized, Controlled Educational Trial. Acad Pediatr 2021; 21:321-328. [PMID: 32473216 DOI: 10.1016/j.acap.2020.05.012] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 05/15/2020] [Accepted: 05/19/2020] [Indexed: 12/21/2022]
Abstract
OBJECTIVE To determine high-school students' ability to learn hemorrhage control skills and knowledge via 3 educational modalities. BACKGROUND Trauma is the leading cause of death for young Americans, and there are calls to teach children about hemorrhage control. However, little is known about adolescents' ability to perform hemorrhage control, and the ideal way(s) to teach them. METHODS This randomized controlled trial enrolled high-school students from 39 states at a 2019 national conference. After answering questions about their willingness to use tourniquets, participants received hemorrhage control education in 1 of 3 formats: instructor-led, web-only, or blended (combining web and instructor-led). Participants were then assessed on their ability to apply a tourniquet and to identify wounds that require a tourniquet. Finally, they completed an attitude questionnaire. RESULTS Two hundred and four (82%) of 248 participants applied a tourniquet correctly: 72 (88%) instructor-led, 50 (61%) web-only, and 79 (94%) blended. The instructor-led and blended arms were superior to the web-only arm (P < .001). Nearly all participants passed an assessment requiring them to identify wounds warranting a tourniquet (99% instructor-led and blended, and 98% web-only). All modalities improved participants' self-reported willingness and comfort in using tourniquets (P < .001). CONCLUSIONS This is the first study to demonstrate that high-school students can learn hemorrhage control via multiple methods. Blended and instructor-led education led to highly successful skill performance. Students learned to identify wounds requiring tourniquets and showed an improved willingness to aid from all modalities. These findings should encourage educators to offer multiple educational modalities.
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Affiliation(s)
- Craig Goolsby
- Department of Military and Emergency Medicine, Uniformed Services University of the Health Sciences (C Goolsby), Bethesda, Md; National Center for Disaster Medicine and Public Health (C Goolsby, LE Rojas, and RH Rodzik), Rockville, Md.
| | - Luis E Rojas
- National Center for Disaster Medicine and Public Health (C Goolsby, LE Rojas, and RH Rodzik), Rockville, Md; The Henry M. Jackson Foundation for the Advancement of Military Medicine (LE Rojas and RH Rodzik), Bethesda, Md
| | - Raphaelle H Rodzik
- National Center for Disaster Medicine and Public Health (C Goolsby, LE Rojas, and RH Rodzik), Rockville, Md; The Henry M. Jackson Foundation for the Advancement of Military Medicine (LE Rojas and RH Rodzik), Bethesda, Md
| | - Marianne Gausche-Hill
- Los Angeles County Emergency Medical Services Agency (M Gausche-Hill), Los Angeles, Calif; Departments of Emergency Medicine and Pediatrics, David Geffen School of Medicine at the University of California (M Gausche-Hill), Los Angeles, Calif; Departments of Emergency Medicine and Pediatrics, Harbor-UCLA Medical Center (M Gausche-Hill), Torrance, Calif
| | - Matthew D Neal
- Departments of Surgery, Critical Care Medicine, and the Clinical and Translational Science Institute (CTSI), University of Pittsburgh (MD Neal), Pittsburgh, Pa; University of Pittsburgh Medical Center (MD Neal), Pittsburgh, Pa
| | - Matthew J Levy
- Department of Emergency Medicine, Johns Hopkins University School of Medicine (MJ Levy), Baltimore, Md; Howard County Department of Fire and Rescue Services (MJ Levy), Columbia, Md
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BenÍtez CYÁ, Ottolino P, Pereira BM, Lima DS, Guemes A, Khan M, Ribeiro Junior MAF. Tourniquet use for civilian extremity hemorrhage: systematic review of the literature. Rev Col Bras Cir 2021; 48:e20202783. [PMID: 33470370 PMCID: PMC10683439 DOI: 10.1590/0100-6991e-20202783] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Accepted: 09/28/2020] [Indexed: 11/21/2022] Open
Abstract
INTRODUCTION extremity tourniquet (TQ) use has increased in the civilian setting; the beneficial results observed in the military has influenced acceptance by EMS and bystanders. This review aimed to analyze extremity TQ types used in the civilian setting, injury site, indications, and complications. METHODS a systematic review was conducted based on original articles published in PubMed, Embase, and Cochrane following PRISMA guidelines from 2010 to 2019. Data extraction focused on extremity TQ use for hemorrhage control in the civilian setting, demographic data, study type and duration, mechanism of injury, indications for use, injury site, TQ type, TQ time, and complications. RESULTS of the 1384 articles identified, 14 were selected for review with a total of 3912 civilian victims with extremity hemorrhage and 3522 extremity TQ placements analyzed. The majority of TQs were applied to male (79%) patients, with blunt or penetrating trauma. Among the indications for TQ use were hemorrhagic shock, suspicion of vascular injuries, continued bleeding, and partial or complete traumatic amputations. Upper extremity application was the most common TQ application site (56%), nearly all applied to a single extremity (99%), and only 0,6% required both upper and lower extremity applications. 80% of the applied TQs were commercial devices, and 20% improvised. CONCLUSIONS TQ use in the civilian setting is associated with trauma-related injuries. Most are single-site TQs applied for the most part to male adults with upper extremity injury. Commercial TQs are more commonly employed, time in an urban setting is under 1 hour, with few complications described.
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Affiliation(s)
- Carlos YÁnez BenÍtez
- - Royo Villanova Hospital, SALUD, General, GI and Acute Care Surgery Department - Zaragoza - Zaragoza - Espanha
| | - Pablo Ottolino
- - Dr. Sótero del Rio Hospital, Trauma and Emergency Surgery Department - Santiago - Santiago - Chile
| | - Bruno M Pereira
- - Universidade de Vassouras, Pró reitoria de Pesquisa e Pós Graduação - Vassouras - RJ - Brasil
| | - Daniel Souza Lima
- - Dr. José Frota Institute, Trauma and Emergency Surgery Department - Fortaleza - CE - Brasil
| | - Antonio Guemes
- - Lozano Blesa University Hospital, GI, Breast and Acute Care Surgery Department - Zaragoza - Zaragoza - Espanha
| | - Mansoor Khan
- - Brighton - Sussex University Hospital NHS Trust, Esophagogastric and Trauma Surgery Department - Brighton - Brighton - Reino Unido
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Comprehensive analysis of combat casualty outcomes in US service members from the beginning of World War II to the end of Operation Enduring Freedom. J Trauma Acute Care Surg 2021; 89:S8-S15. [PMID: 32740296 DOI: 10.1097/ta.0000000000002789] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Meléndez-Lugo JJ, Caicedo Y, Guzmán-Rodríguez M, Serna JJ, Ordoñez J, Angamarca E, García A, Pino LF, Quintero L, Parra MW, Ordoñez CA. Prehospital Damage Control: The Management of Volume, Temperature… and Bleeding! COLOMBIA MEDICA (CALI, COLOMBIA) 2020; 51:e4024486. [PMID: 33795898 PMCID: PMC7968431 DOI: 10.25100/cm.v51i4.4486] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Damage control resuscitation should be initiated as soon as possible after a trauma event to avoid metabolic decompensation and high mortality rates. The aim of this article is to assess the position of the Trauma and Emergency Surgery Group (CTE) from Cali, Colombia regarding prehospital care, and to present our experience in the implementation of the “Stop the Bleed” initiative within Latin America. Prehospital care is phase 0 of damage control resuscitation. Prehospital damage control must follow the guidelines proposed by the “Stop the Bleed” initiative. We identified that prehospital personnel have a better perception of hemostatic techniques such as tourniquet use than the hospital providers. The use of tourniquets is recommended as a measure to control bleeding. Fluid management should be initiated using low volume crystalloids, ideally 250 cc boluses, maintaining the principle of permissive hypotension with a systolic blood pressure range between 80- and 90-mm Hg. Hypothermia must be management using warmed blankets or the administration of intravenous fluids warmed prior to infusion. However, these prehospital measures should not delay the transfer time of a patient from the scene to the hospital. To conclude, prehospital damage control measures are the first steps in the control of bleeding and the initiation of hemostatic resuscitation in the traumatically injured patient. Early interventions without increasing the transfer time to a hospital are the keys to increase survival rate of severe trauma patients.
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Affiliation(s)
| | - Yaset Caicedo
- Fundación Valle del Lili, Centro de Investigaciones Clínicas (CIC), Cali, Colombia
| | - Mónica Guzmán-Rodríguez
- Universidad de Chile, Instituto de Ciencias Biomédicas, Facultad de Medicina, Santiago de Chile, Chile
| | - José Julián Serna
- Fundación Valle del Lili, Department of Surgery, Division of Trauma and Acute Care Surgery, Cali, Colombia.,Universidad del Valle, Facultad de Salud, Escuela de Medicina, Sección de Cirugía de Trauma y Emergencias, Cali Colombia.,Universidad Icesi, Cali, Colombia.,Hospital Universitario del Valle, Sección de Cirugía de Trauma y Emergencias, Cali, Colombia
| | - Juliana Ordoñez
- Universidad del Valle, Facultad de Salud, Escuela de Medicina, Sección de Cirugía de Trauma y Emergencias, Cali Colombia
| | | | - Alberto García
- Fundación Valle del Lili, Department of Surgery, Division of Trauma and Acute Care Surgery, Cali, Colombia.,Universidad del Valle, Facultad de Salud, Escuela de Medicina, Sección de Cirugía de Trauma y Emergencias, Cali Colombia.,Universidad Icesi, Cali, Colombia
| | - Luis Fernando Pino
- Universidad del Valle, Facultad de Salud, Escuela de Medicina, Sección de Cirugía de Trauma y Emergencias, Cali Colombia.,Hospital Universitario del Valle, Sección de Cirugía de Trauma y Emergencias, Cali, Colombia
| | - Laureano Quintero
- Universidad del Valle, Facultad de Salud, Escuela de Medicina, Sección de Cirugía de Trauma y Emergencias, Cali Colombia.,Centro Médico Imbanaco, Cali, Colombia
| | - Michael W Parra
- Broward General Level I Trauma Center, Department of Trauma Critical Care, Fort Lauderdale, FL, USA
| | - Carlos A Ordoñez
- Fundación Valle del Lili, Department of Surgery, Division of Trauma and Acute Care Surgery, Cali, Colombia.,Universidad del Valle, Facultad de Salud, Escuela de Medicina, Sección de Cirugía de Trauma y Emergencias, Cali Colombia.,Universidad Icesi, Cali, Colombia
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50
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Sumann G, Moens D, Brink B, Brodmann Maeder M, Greene M, Jacob M, Koirala P, Zafren K, Ayala M, Musi M, Oshiro K, Sheets A, Strapazzon G, Macias D, Paal P. Multiple trauma management in mountain environments - a scoping review : Evidence based guidelines of the International Commission for Mountain Emergency Medicine (ICAR MedCom). Intended for physicians and other advanced life support personnel. Scand J Trauma Resusc Emerg Med 2020; 28:117. [PMID: 33317595 PMCID: PMC7737289 DOI: 10.1186/s13049-020-00790-1] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Accepted: 09/10/2020] [Indexed: 12/11/2022] Open
Abstract
Background Multiple trauma in mountain environments may be associated with increased morbidity and mortality compared to urban environments. Objective To provide evidence based guidance to assist rescuers in multiple trauma management in mountain environments. Eligibility criteria All articles published on or before September 30th 2019, in all languages, were included. Articles were searched with predefined search terms. Sources of evidence PubMed, Cochrane Database of Systematic Reviews and hand searching of relevant studies from the reference list of included articles. Charting methods Evidence was searched according to clinically relevant topics and PICO questions. Results Two-hundred forty-seven articles met the inclusion criteria. Recommendations were developed and graded according to the evidence-grading system of the American College of Chest Physicians. The manuscript was initially written and discussed by the coauthors. Then it was presented to ICAR MedCom in draft and again in final form for discussion and internal peer review. Finally, in a face-to-face discussion within ICAR MedCom consensus was reached on October 11th 2019, at the ICAR fall meeting in Zakopane, Poland. Conclusions Multiple trauma management in mountain environments can be demanding. Safety of the rescuers and the victim has priority. A crABCDE approach, with haemorrhage control first, is central, followed by basic first aid, splinting, immobilisation, analgesia, and insulation. Time for on-site medical treatment must be balanced against the need for rapid transfer to a trauma centre and should be as short as possible. Reduced on-scene times may be achieved with helicopter rescue. Advanced diagnostics (e.g. ultrasound) may be used and treatment continued during transport.
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Affiliation(s)
- G Sumann
- Austrian Society of Mountain and High Altitude Medicine, Emergency physician, Austrian Mountain and Helicopter Rescue, Altach, Austria
| | - D Moens
- Emergency Department Liège University Hospital, CMH HEMS Lead physician and medical director, Senior Lecturer at the University of Liège, Liège, Belgium
| | - B Brink
- Mountain Emergency Paramedic, AHEMS, Canadian Society of Mountain Medicine, Whistler Blackcomb Ski Patrol, Whistler, Canada
| | - M Brodmann Maeder
- Department of Emergency Medicine, University Hospital and University of Bern, Switzerland and Institute of Mountain Emergency Medicine, Eurac Research, Bolzano, Italy
| | - M Greene
- Medical Officer Mountain Rescue England and Wales, Wales, UK
| | - M Jacob
- Department of Anaesthesiology, Intensive Care and Pain Medicine, Hospitallers Brothers Saint-Elisabeth-Hospital Straubing, Bavarian Mountain Rescue Service, Straubing, Germany
| | - P Koirala
- Adjunct Assistant Professor, Emergency Medicine, University of Maryland School of Medicine, Mountain Medicine Society of Nepal, Kathmandu, Nepal
| | - K Zafren
- ICAR MedCom, Department of Emergency Medicine, Stanford University Medical Center, Stanford, CA, USA.,Alaska Native Medical Center, Anchorage, AK, USA
| | - M Ayala
- University Hospital Germans Trias i Pujol, Badalona, Spain
| | - M Musi
- Department of Emergency Medicine, University of Colorado School of Medicine, Aurora, CO, USA
| | - K Oshiro
- Department of Cardiovascular Medicine and Director of Mountain Medicine, Research, and Survey Division, Hokkaido Ohno Memorial Hospital, Sapporo, Japan
| | - A Sheets
- Emergency Department, Boulder Community Health, Boulder, CO, USA
| | - G Strapazzon
- Institute of Mountain Emergency Medicine, Eurac Research, Bolzano, Italy.,The Corpo Nazionale Soccorso Alpino e Speleologico, National Medical School (CNSAS SNaMed), Milan, Italy
| | - D Macias
- Department of Emergency Medicine, International Mountain Medicine Center, University of New Mexico, Albuquerque, NM, USA
| | - P Paal
- Department of Anaesthesiology and Intensive Care Medicine, St. John of God Hospital, Paracelsus Medical University, Salzburg, Austria.
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