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Storer AP, Edwards TH, Rutter CR, Young GE, Mullaney SB. Causes of mortality in military working dog from traumatic injuries. Front Vet Sci 2024; 11:1360233. [PMID: 39040817 PMCID: PMC11260784 DOI: 10.3389/fvets.2024.1360233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Accepted: 06/18/2024] [Indexed: 07/24/2024] Open
Abstract
Introduction This study aimed to identify the pathophysiologic causes of death following traumatic injuries in military working dogs (MWDs) and determine the risk factors associated with mortality in MWD following traumatic injuries. The results of this study will allow for better targeting of interventions to ameliorate these pathophysiologic causes of death and inform research priorities directed at the pathophysiology that leads to the death of MWDs. Methods The final dataset for this study was compiled by using two previously established datasets. Based on review of available data and supplemental records (when available), MWDs in which a definitive cause of death could be determined were included in the study population. These MWDs were assigned a cause of death based on categories previously identified in studies evaluating service member casualties. A group of MWDs who survived their traumatic injury and had similar mechanisms of injury and types of injury to the deceased MWDs were included to allow for comparison and establishment of risk factors associated with MWD death. Variables collected included breed, age, sex, mechanism of injury, survival/non-survival, type of trauma, mechanism of injury, pathophysiology that led to death and pre-hospital care provided. Statistical analysis included Fishers exact test for categorical variables and univariable and multivariable logistic regression to identify factors associated with the MWD death. Results A total of 84 MWDs (33 non-survivors and 51 survivors) were included in this study. Of the 33 MWDs that died, 27 (81.8%) were noted to be dead on arrival. The pathophysiologic causes of death were found to be hemorrhage (45.5% [n = 15]), head trauma (21.2% [n = 7]), catastrophic tissue destruction (15.2% [n = 5]), pneumothorax (9.1% [n = 3]) and one (3% [n = 1]) of each of the following: septic shock, asphyxiation and burns. Military working dogs that did not receive non-DVM care were 3.55 times more likely to die than those that did receive non-DVM care (95% CI 1.03-12.27). The majority of MWDs died of their injuries before reaching veterinary care. Discussion To increase the survival of MWDs on the battlefield, further research should focus on developing new interventions and techniques to mitigate the effects of the pathophysiology noted to cause MWD death. Furthermore, given that care by a non-DVM was found to be associated with survival, the implementation of pre-hospital care and early resuscitation techniques should be a continued priority for those treating MWDs at both the point of injury and in the prehospital setting.
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Affiliation(s)
- Amanda P. Storer
- School of Veterinary Medicine and Biomedical Sciences - Small Animal Clinical Sciences, Texas A&M University, College Station, TX, United States
| | - Thomas H. Edwards
- School of Veterinary Medicine and Biomedical Sciences - Small Animal Clinical Sciences, Texas A&M University, College Station, TX, United States
- US Army Institute of Surgical Research, Joint Base, Fort Sam Houston, TX, United States
| | - Christine R. Rutter
- School of Veterinary Medicine and Biomedical Sciences - Small Animal Clinical Sciences, Texas A&M University, College Station, TX, United States
| | - Grace E. Young
- United States Military Academy, Department of Chemistry and Life Science, West Point, NY, United States
| | - Sara B. Mullaney
- United States Military Academy, Department of Chemistry and Life Science, West Point, NY, United States
- Medical Center of Excellence, Division of Veterinary Science, Food Protection Branch, Joint Base San Antonio, Fort Sam Houston, TX, United States
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Percutaneous delivery of self-propelling thrombin-containing powder increases survival from non-compressible truncal hemorrhage in a swine model of coagulopathy and hypothermia. J Trauma Acute Care Surg 2022; 93:S86-S93. [PMID: 35545803 DOI: 10.1097/ta.0000000000003670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND Non-compressible truncal hemorrhage (NCTH) remains a leading cause of preventable death on the battlefield. Definitively managing severe NCTH requires surgery within the first hour after injury, which is difficult when evacuating casualties from remote and austere environments. During delays to surgery, hemostatic interventions that are performed prehospital can prevent coagulopathy and hemorrhagic shock and increase the likelihood that casualties survive to receive definitive care. We previously reported that a self-propelling thrombin-containing powder (SPTP) can be delivered percutaneously into the abdomen as a minimally invasive intervention and can self-disperse through pooled blood to deliver the hemostatic agents thrombin and tranexamic acid (TXA) locally to noncompressible intracavitary wounds. We hypothesized that in swine with massive NCTH, dilutional coagulopathy and hypothermia, delivering SPTP could extend survival times. METHODS Ten swine (n = 5 per group) underwent NCTH from a Grade V liver injury following a midline laparotomy. The laparotomy was closed with sutures afterwards, creating a hemoperitoneum, and animals were managed with crystalloid fluid resuscitation, or crystalloid resuscitation and SPTP. SPTP was delivered into the closed abdomen using a CO2-powered spray device and a catheter placed into the hemoperitoneum, entering through the upper right quadrant using the Seldinger technique. Survival to one and three hours was recorded. In an additional animal, hemorrhage was created laparoscopically and SPTP was imaged in-situ within the abdomen to visually track dispersion of the particles. RESULTS SPTP dispersed as far as 35 +/- 5.0 cm within the abdomen. SPTP increased survival to one and three hours (Kaplan-Meier p = 0.007 for both). The median survival time was 61 minutes with SPTP and 31 minutes without (p = 0.016). CONCLUSION SPTP effectively disperses medications throughout a hemoperitoneum and increases survival in a model of NCTH. SPTP is a promising strategy for nonsurgical management of NCTH, warranting further testing of its safety and efficacy. LEVEL OF EVIDENCE Basic Science, N/A.
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Percutaneous delivery of self-propelling hemostatic powder for managing non-compressible abdominal hemorrhage: a proof-of-concept study in swine. Injury 2022; 53:1603-1609. [PMID: 35067343 DOI: 10.1016/j.injury.2022.01.024] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Revised: 12/23/2021] [Accepted: 01/12/2022] [Indexed: 02/02/2023]
Abstract
INTRODUCTION Non-compressible intra-abdominal hemorrhage (NCIAH) is a major cause of preventable death on the battlefield and in civilian trauma. Currently, it can only be definitively managed with surgery, as there are limited strategies for controlling ongoing NCIAH in the prehospital environment. We hypothesized that a self-propelling thrombin-containing powder (SPTP) could increase survival in a swine model of NCIAH when delivered percutaneously into the closed abdomen using an engineered spray system. MATERIALS AND METHODS Nineteen swine underwent surgical laparotomy followed by a Grade V liver injury that created massive hemorrhage, before closing the abdomen with sutures. Animals either received treatment with standard of care fluid resuscitation (n=9) or the SPTP spray system (n=10), which consisted of a spray device and a 14 Fr catheter. Using the spray system, SPTP was delivered into a hemoperitoneum identified using a focused assessment with sonography in trauma (FAST) exam. Lactated Ringer's solution was administered to all animals to maintain a mean arterial pressure (MAP) of >50 mmHg. The primary outcome was percentage of animals surviving at three hours following injury. RESULTS In the swine model of NCIAH, a greater percentage of animals receiving SPTP survived to three hours, although differences were not significant. The SPTP spray system increased the median survival of animals from 1.6 hr in the fluid resuscitation group to 4.3 hr. The SPTP spray system delivered a total mass of 18.5 ± 1.0 g of SPTP. The mean change in intra-abdominal pressure following SPTP delivery was 5.2 ± 1.8 mmHg (mean ± SEM). The intervention time was 6.7 ± 1.7 min. No adverse effects related to the SPTP formulation or the spray system were observed. SPTP was especially beneficial in animals that had either severely elevated lactate concentrations or low mean arterial pressure of <35 mmHg shortly after injury. CONCLUSIONS This demonstrates proof-of-concept for use of a new minimally invasive procedure for managing NCIAH, which could extend survival time to enable patients to reach definitive surgical care.
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Ratnayake A, Worlton TJ. Role of prophylactic fasciotomy in contemporary vascular trauma practices. Injury 2022; 53:811-812. [PMID: 34274123 DOI: 10.1016/j.injury.2021.07.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Accepted: 07/03/2021] [Indexed: 02/02/2023]
Affiliation(s)
- Amila Ratnayake
- Department of Surgery, Military Hospital Narahenpita, 08 Elvitigala Mawatha, Colombo, 00800, Sri Lanka; Uniformed Service University of the Health Sciences, 4301 Jones Bridge Rd, Bethesda, MD 20814 United States.
| | - Tamara J Worlton
- Uniformed Service University of the Health Sciences, 4301 Jones Bridge Rd, Bethesda, MD 20814 United States; Department of Surgery, Walter Reed National Military Medical Center, 8901 Wisconsin Ave, Bethesda, Maryland 20889 United States.
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Mitra J, Qiu J, MacDonald M, Venugopal P, Wallace K, Abdou H, Richmond M, Elansary N, Edwards J, Patel N, Morrison J, Marinelli L. Automatic Hemorrhage Detection From Color Doppler Ultrasound Using a Generative Adversarial Network (GAN)-Based Anomaly Detection Method. IEEE JOURNAL OF TRANSLATIONAL ENGINEERING IN HEALTH AND MEDICINE 2022; 10:1800609. [PMID: 36051823 PMCID: PMC9423818 DOI: 10.1109/jtehm.2022.3199987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Revised: 07/21/2022] [Accepted: 08/10/2022] [Indexed: 11/21/2022]
Abstract
Hemorrhage control has been identified as a priority focus area both for civilian and military populations in the United States because exsanguination is the most common cause of preventable death in hemorrhagic injury. Non-compressible torso hemorrhage (NCTH) has high mortality rate and there are currently no broadly available therapies for NCTH outside of a surgical room environment. Novel therapies, which include High Intensity Focused Ultrasound (HIFU) have emerged as promising methods for hemorrhage control as they can non-invasively cauterize bleeding tissue deep within the body without injuring uninvolved regions. A major challenge in the application of HIFU with color Doppler US guidance is the interpretation and optimization of the blood flow images in real-time to identify the hemorrhagic focus. Today, this task requires an expert sonographer, limiting the utility of this therapy in non-clinical environments. In this work, we investigated the feasibility of an automated hemorrhage detection method using a Generative Adversarial Network (GAN) for anomaly detection that learns a manifold of normal blood flow variability and subsequently identifies anomalous flow patterns that fall outside the learned manifold. As an initial feasibility study, we collected ultrasound color Doppler images of femoral arteries in an animal model of vascular injury (N = 11 pigs). Velocity information of the blood flow were extracted from the color Doppler images that were used for training and testing the anomaly detection network. Normotensive images from 8 pigs were used for training, and testing was performed on normotensive, immediately after injury, 10 minutes post-injury and 30 minutes post-injury images from 3 other pigs. The residual images or the reconstructed error maps show promise in detecting hemorrhages with an AUC of 0.90, 0.87, 0.62 immediately, 10 minutes post-injury and 30 minutes post-injury respectively with an overall AUC of 0.83.
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Affiliation(s)
| | | | | | | | | | - Hossam Abdou
- School of Medicine, University of Maryland, Baltimore, Baltimore, MD, USA
| | - Michael Richmond
- School of Medicine, University of Maryland, Baltimore, Baltimore, MD, USA
| | - Noha Elansary
- School of Medicine, University of Maryland, Baltimore, Baltimore, MD, USA
| | - Joseph Edwards
- School of Medicine, University of Maryland, Baltimore, Baltimore, MD, USA
| | - Neerav Patel
- School of Medicine, University of Maryland, Baltimore, Baltimore, MD, USA
| | - Jonathan Morrison
- School of Medicine, University of Maryland, Baltimore, Baltimore, MD, USA
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Clarke EE, Hamm J, Fisher AD, April MD, Long BJ, Mdaki KS, Hill R, Bynum JA, Schauer SG. Trends in Prehospital Blood, Crystalloid, and Colloid Administration in Accordance With Changes in Tactical Combat Casualty Care Guidelines. Mil Med 2021; 187:e1265-e1270. [PMID: 34935982 DOI: 10.1093/milmed/usab461] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 10/12/2021] [Accepted: 11/08/2021] [Indexed: 11/12/2022] Open
Abstract
INTRODUCTION Hemorrhage is the leading threat to the survival of battlefield casualties. This study aims to investigate the types of fluids and blood products administered in prehospital trauma encounters to discover the effectiveness of Tactical Combat Casualty Care (TCCC) recommendations. MATERIALS AND METHODS This is a secondary analysis of a previously described dataset from the Department of Defense Trauma Registry with a focus on prehospital fluid and blood administration in conjunction with changes in the TCCC guidelines. We collected demographic information on each patient. We categorized receipt of each fluid type and blood product as a binary variable for each casualty and evaluated trends over 2007-2020 both unadjusted and controlling for injury severity and mechanism of injury. RESULTS Our original dataset comprised 25,897 adult casualties from January 1, 2007 through March 17, 2020. Most (97.3%) of the casualties were male with a median age of 25. Most (95.5%) survived to hospital discharge, and 12.2% of the dataset received fluids of any kind. Medical personnel used crystalloids in 7.4% of encounters, packed red blood cells in 2.0%, and whole blood in 0.5% with very few receiving platelets or freeze-dried plasma. In the adjusted model, we noted significant year-to-year increases in intravenous fluid administration from 2014 to 2015 and 2018 to 2019, with significant decreases noted in 2008-2009, 2010-2012, and 2015-2016. We noted no significant increases in Hextend used, but we did note significant decreases in 2010-2012. For any blood product, we noted significant increases from 2016 to 2017, with decreases noted in 2009-2013, 2015-2016, and 2017-2018. Overall, we noted a general spike in all uses in 2011-2012 that rapidly dropped off 2012-2013. Crystalloids consistently outpaced the use of blood products. We noted a small upward trend in all blood products from 2017 to 2019. CONCLUSIONS Changes in TCCC guidelines did not immediately translate into changes in prehospital fluid administration practices. Crystalloid fluids continue to dominate as the most commonly administered fluid even after the 2014 TCCC guidelines changed to use of blood products over crystalloids. There should be future studies to investigate the reasons for delay in guideline implementation and efforts to improve adherence.
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Affiliation(s)
| | - James Hamm
- Soldier Recovery Brigade, National Capital Region, Walter Reed, MD, USA
| | - Andrew D Fisher
- University of New Mexico School of Medicine, Albuquerque, NM 87106, USA.,Texas Army National Guard, Austin, TX, USA
| | - Michael D April
- 40th FRSD, Forward Resuscitative Surgical Team, Fort Carson, CO 80193, USA.,Department of Emergency Medicine, Brooke Army Medical Center, JBSA Fort Sam Houston, TX 78234, USA
| | - Brit J Long
- Department of Military and Emergency Medicine, Uniformed Services University of the Health Sciences, Bethesda, MD 20814, USA.,Department of Emergency Medicine, Brooke Army Medical Center, JBSA Fort Sam Houston, TX 78234, USA
| | - Kennedy S Mdaki
- US Army Institute of Surgical Research, JBSA Fort Sam Houston, TX 78234, USA
| | - Ronnie Hill
- US Army Institute of Surgical Research, JBSA Fort Sam Houston, TX 78234, USA
| | - James A Bynum
- US Army Institute of Surgical Research, JBSA Fort Sam Houston, TX 78234, USA
| | - Steven G Schauer
- Department of Military and Emergency Medicine, Uniformed Services University of the Health Sciences, Bethesda, MD 20814, USA.,Department of Emergency Medicine, Brooke Army Medical Center, JBSA Fort Sam Houston, TX 78234, USA.,US Army Institute of Surgical Research, JBSA Fort Sam Houston, TX 78234, USA
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Strauss R, Menchetti I, Perrier L, Blondal E, Peng H, Sullivan-Kwantes W, Tien H, Nathens A, Beckett A, Callum J, da Luz LT. Evaluating the Tactical Combat Casualty Care principles in civilian and military settings: systematic review, knowledge gap analysis and recommendations for future research. Trauma Surg Acute Care Open 2021; 6:e000773. [PMID: 34746434 PMCID: PMC8527149 DOI: 10.1136/tsaco-2021-000773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Accepted: 07/27/2021] [Indexed: 11/09/2022] Open
Abstract
OBJECTIVES The Tactical Combat Casualty Care (TCCC) guidelines detail resuscitation practices in prehospital and austere environments. We sought to review the content and quality of the current TCCC and civilian prehospital literature and characterize knowledge gaps to offer recommendations for future research. METHODS MEDLINE, EMBASE, CINAHL, and Cochrane Central Register of Controlled Trials were searched for studies assessing intervention techniques and devices used in civilian and military prehospital settings that could be applied to TCCC guidelines. Screening and data extraction were performed according to PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines. Quality appraisal was conducted using appropriate tools. RESULTS Ninety-two percent (n=57) of studies were observational. Most randomized trials had low risk of bias, whereas observational studies had higher risk of bias. Interventions of massive hemorrhage control (n=17) were wound dressings and tourniquets, suggesting effective hemodynamic control. Airway management interventions (n=7) had high success rates with improved outcomes. Interventions of respiratory management (n=12) reported low success with needle decompression. Studies assessing circulation (n=18) had higher quality of evidence and suggested improved outcomes with component hemostatic therapy. Hypothermia prevention interventions (n=2) were generally effective. Other studies identified assessed the use of extended focused assessment with sonography in trauma (n=3) and mixed interventions (n=2). CONCLUSIONS The evidence was largely non-randomized with heterogeneous populations, interventions, and outcomes, precluding robust conclusions in most subjects addressed in the review. Knowledge gaps identified included the use of blood products and concentrate of clotting factors in the prehospital setting. LEVEL OF EVIDENCE Systematic review, level III.
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Affiliation(s)
- Rachel Strauss
- Department of Surgery, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
| | - Isabella Menchetti
- Department of Surgery, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
| | - Laure Perrier
- Department of Surgery, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
| | - Erik Blondal
- Department of Surgery, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
| | - Henry Peng
- Defence Research and Development Canada, Toronto Research Centre, Toronto, Ontario, Canada
| | - Wendy Sullivan-Kwantes
- Defence Research and Development Canada, Toronto Research Centre, Toronto, Ontario, Canada
| | - Homer Tien
- Department of Surgery, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
| | - Avery Nathens
- Department of Surgery, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
| | - Andrew Beckett
- Department of Surgery, St Michael's Hospital, Toronto, Ontario, Canada
| | - Jeannie Callum
- Laboratory Medicine and Molecular Diagnostics, Kingston Health Sciences Centre, Kingston, Ontario, Canada
| | - Luis Teodoro da Luz
- Department of Surgery, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
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Jaeger JM, Rice DC, Albright-Trainer B. Battlefield Medicine: Anesthesia and Critical Care in the Combat Zone. Anesthesiol Clin 2021; 39:321-336. [PMID: 34024434 DOI: 10.1016/j.anclin.2021.03.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
The US Military Joint Trauma System has been developed to mitigate the harsh conditions under which medical providers care for combat casualties and provide continuity of care from the battlefield to US medical centers. We review the components of this system with emphasis on combat trauma care under fire and the role of the anesthesiologist and intensivist in this continuum of care. An important link in the chain of survival is the Air Force Critical Care Aeromedical Transport Team, which provides critical care while transporting casualties from the theater to higher levels of care outside the war zone and home.
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Affiliation(s)
- J Michael Jaeger
- Departments of Anesthesiology and Surgery, Division of Critical Care Medicine, University of Virginia Health System, Box 800710, Charlottesville, VA 22908, USA.
| | - Darian C Rice
- Department of Anesthesiology, Division of Critical Care Medicine, University of Virginia Health System, Box 800710, Charlottesville, VA 22908, USA
| | - Brooke Albright-Trainer
- Department of Anesthesiology, Division of Critical Care Medicine, University of Virginia Health System, Box 800710, Charlottesville, VA 22908, USA; Department of Anesthesiology, Central Virginia VA HCS, Richmond, VA 23249, USA
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9
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Fresh frozen plasma attenuates lung injury in a novel model of prolonged hypotensive resuscitation. J Trauma Acute Care Surg 2021; 89:S118-S125. [PMID: 32282752 DOI: 10.1097/ta.0000000000002719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Hemorrhagic shock remains a leading cause of early death among severely injured in both civilian and military settings. As future military operations will require strategies allowing prolonged field care of the injured, we sought to develop an in vivo model of prolonged hypotensive resuscitation (PHR) and to evaluate the role of plasma-based resuscitation in this model. We hypothesized that resuscitation with fresh frozen plasma (FFP) would mitigate lung injury when compared with Hextend in a rodent model of PHR. METHODS Mice underwent laparotomy and hemorrhagic shock (mean arterial blood pressure, 35 ± 5 mm Hg × 90 minutes) followed by PHR with either FFP or Hextend to maintain a mean arterial blood pressure of 55 mm Hg to 60 mm Hg for 6 hours. Sham animals underwent cannulation only. At the end of 6 hours, animals were euthanized, and lung tissue harvested for measurement of histopathologic injury, inflammation and permeability using hematoxylin and eosin staining, myeloperoxidase immunofluorescence staining and Evans Blue dye. Pulmonary syndecan-1 immunostaining was assessed as an indicator of endothelial cell integrity. RESULTS All animals in the FFP, Hextend, and sham groups survived to the end of resuscitation. Resuscitation with FFP mitigated lung histopathologic injury compared with Hextend (histologic injury score of 4.38 ± 2.07 vs. 7.5 ± 0.93, scale of 0-9, p = 0.002) and was comparable to shams (histologic injury score of 4.0 ± 1.93, scale of 0-9, p = 0.99). Fresh frozen plasma also reduced lung inflammation (0.116 ± 0.044 vs. 0.308 ± 0.054 relative fluorescence of myeloperoxidase, p = 0.002) and restored pulmonary syndecan-1 (0.514 ± 0.061 vs. 0.059 ± 0.021, relative syndecan-1 fluorescence, p < 0.001) when compared with Hextend. Consistently, FFP mitigated lung hyperpermeability compared with Hextend (7.30 ± 1.34 μg vs. 14.91 ± 5.55 μg Evans blue/100 mg lung tissue, p = 0.005). CONCLUSION We have presented a novel model of PHR of military relevance to the prolonged field care environment. In this model, FFP maintains its pulmonary protective effects using a PHR strategy compared with Hextend, which supports the need for further development and implementation of plasma-based resuscitation in the forward environment. LEVEL OF EVIDENCE Basic science.
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10
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Hall A, Qureshi I, Brumagen K, Glaser J. Maintaining vascular trauma proficiency for military non-vascular surgeons. Trauma Surg Acute Care Open 2020; 5:e000475. [PMID: 32596506 PMCID: PMC7312323 DOI: 10.1136/tsaco-2020-000475] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Revised: 04/29/2020] [Accepted: 05/04/2020] [Indexed: 11/11/2022] Open
Abstract
Background Vascular injuries in combat casualty patients are common and remain an ongoing concern. In civilian trauma centers, vascular surgeons are frequently available to treat vascular injuries. Within the military, vascular surgeons are not available at all locations where specialty expertise may be optimal. This study aims to determine if a visiting surgeon model, where a general surgeon can visit a civilian trauma center, would be practical in maintaining proficiency in vascular surgery. Methods All vascular trauma relevant cases done by any surgical service were identified during a 2-year period at Saint Louis University Hospital between October 1, 2016 and September 30, 2018. These included cases performed by trauma/general, thoracic, vascular, and orthopedic surgery. Predictions on the number of call days to experience an operative case were then calculated. Results A total of 316 vascular cases were performed during the time period. A surgeon on call for five 24-hour shifts would experience 2.1 urgent vascular cases with 95% certainty. To achieve five cases with 95% certainty, a surgeon would have to be on call for 34 24-hour shifts. Discussion A visiting surgeon model would be very difficult to maintain to acquire or maintain proficiency in vascular surgery. High-volume trauma centers, or centers with significant open vascular cases in addition to trauma, may have more reasonable time requirements, but would have to be evaluated using these methods. Level of evidence Economic and value-based evaluations, level II.
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Affiliation(s)
- Andrew Hall
- Surgery, 96th Medical Group, US Air Force Regional Hospital, Eglin AFB, Florida, USA
| | - Iram Qureshi
- Biomaterials and Epidemiology, Naval Medical Research Unit San Antonio, San Antonio, Texas, USA
| | - Kegan Brumagen
- Surgery, Keesler Air Force Base, Biloxi, Mississippi, USA
| | - Jacob Glaser
- Austin Shock Trauma, St. David's South Austin Medical Center, Austin, Texas, USA.,Naval Medical Research San Antonio, San Antonio, Texas, USA
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11
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Suresh MR, Rizzo JA, Sosnov JA, Stacey WN, Howard JT, Tercero JR, Babcock EH, Stewart IJ. Assessing the NephroCheck® Test System in Predicting the Risk of Death or Dialysis in Burn Patients. J Burn Care Res 2020; 41:633-639. [PMID: 31960038 DOI: 10.1093/jbcr/iraa008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Acute kidney injury (AKI) is associated with high mortality in burn patients. Urinary biomarkers can aid in the prediction of AKI and its consequences, such as death and the need for renal replacement therapy (RRT). The purpose of this study was to investigate a novel methodology for detecting urinary biomarkers, the NephroCheck® Test System, and assess its ability to predict death or the need for RRT in burn patients. Burn patients admitted to the United States Army Institute of Surgical Research (USAISR) burn intensive care unit were prospectively enrolled between March 2016 and April 2018. A urine sample was obtained from all study participants using the NephroCheck® system. Patient and injury characteristics were gathered, and descriptive statistics were calculated and multivariable logistic regression analyses were performed using these data. Of the 69 patients in this study, 15 patients (21.7%) attained the composite outcome of death or needing RRT within 30 days of urine collection. NephroCheck® scores were higher for patients with the composite outcome, with P = 0.06 for centrifuged scores and P = 0.04 for noncentrifuged scores. Centrifuged and noncentrifuged scores were in high agreement and correlation (R2 = 0.97, P < 0.0001). Noncentrifuged scores were significant in the unadjusted analysis, but they were not significant in the adjusted analysis. Although these scores had a lower sensitivity and negative predictive value compared with other parameters, they had the second highest specificity and positive predictive value. NephroCheck® scores were higher in burn patients with the composite outcome of death or needing RRT, and they demonstrated comparable sensitivity and specificity to creatinine and TBSA.
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Affiliation(s)
- Mithun R Suresh
- United States Army Institute of Surgical Research, JBSA Fort Sam Houston, Texas
| | - Julie A Rizzo
- United States Army Institute of Surgical Research, JBSA Fort Sam Houston, Texas.,Uniformed Services University of the Health Sciences, Bethesda, Maryland
| | | | - Winfred N Stacey
- Department of Clinical Investigation, Brooke Army Medical Center, JBSA Fort Sam Houston, Texas
| | - Jeffrey T Howard
- Department of Public Health, College for Health, Community and Policy, University of Texas at San Antonio, San Antonio, Texas.,Joint Trauma System, Defense Health Agency, United States Department of Defense, JBSA Fort Sam Houston, Texas
| | - Javance R Tercero
- United States Army Institute of Surgical Research, JBSA Fort Sam Houston, Texas
| | | | - Ian J Stewart
- Uniformed Services University of the Health Sciences, Bethesda, Maryland.,David Grant Medical Center, Travis Air Force Base, California
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Campbell K, Naumann DN, Remick K, Wright C. Damage control resuscitation and surgery for indigenous combat casualties: a prospective observational study. BMJ Mil Health 2019; 167:18-22. [PMID: 31227598 DOI: 10.1136/jramc-2019-001228] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 05/27/2019] [Accepted: 05/31/2019] [Indexed: 01/23/2023]
Abstract
INTRODUCTION Specialist units that assist indigenous forces (IF) in their strategic aims are supported by medical teams providing point of injury emergency care for casualties, including IF and civilians (Civ). We investigated the activities of a Coalition Forces far-forward medical facility, in order to inform medical providers about the facilities and resources required for medical support to IF and Civ during such operations. METHODS A prospective observational study (June to August 2017) undertaken at a far-forward Coalition Forces medical support unit (12 rotating personnel) recorded patient details (IF or Civ), mechanism of injury (MOI), number of blood products used, damage control resuscitation (DCR) and damage control surgery (DCS), number of mass casualty (MASCAL) scenarios, resuscitative thoracotomy, resuscitative endovascular balloon occlusion of the aorta (REBOA) and whole blood emergency donor panels (EDP). RESULTS 680 casualties included 478 IF and 202 Civ (45.5% of the Civ were paediatric). Most common MOIs were blast (n=425; 62.5%) and gunshot wound (n=200; 29.4%). Fifteen (2.2%) casualties died; 627 (92.2%) were transferred to local hospitals. DCR was used for 203 (29.9%), and DCS for 182 (26.8%) casualties. There were 23 MASCAL scenarios, 1220 transfusions and 32 EDPs. REBOA was performed eight times, and thoracotomy was performed 27 times. CONCLUSIONS A small medical team provided high-tempo emergency resuscitative care for hundreds of IF and Civ casualties within a short space of time using state-of-the-art resuscitative modalities. DCR and DCS were undertaken with a large number of EDPs, and a high survival-to-transfer rate.
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Affiliation(s)
| | - D N Naumann
- Academic Department of Military Surgery and Trauma, Birmingham, UK
| | - K Remick
- Department of Surgery, Uniformed Services University, Bethesda, Maryland, USA
| | - C Wright
- Academic Department of Military Emergency Medicine, Royal Centre for Defence Medicine, Birmingham, UK
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Hoffman HG, Meyer WJ, Drever SA, Soltani M, Atzori B, Herrero R, Alhalabi W, Richards TL, Sharar SR, Jensen MP, Patterson DR. Virtual Reality Distraction to Help Control Acute Pain during Medical Procedures. VIRTUAL REALITY FOR PSYCHOLOGICAL AND NEUROCOGNITIVE INTERVENTIONS 2019. [DOI: 10.1007/978-1-4939-9482-3_8] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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