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Campwala I, Dorken-Gallastegi A, Spinella PC, Brown JB, Leeper CM. Whole blood to total transfusion volume ratio in injured children: A national database analysis. J Trauma Acute Care Surg 2024:01586154-990000000-00802. [PMID: 39269259 DOI: 10.1097/ta.0000000000004443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/15/2024]
Abstract
BACKGROUND Whole blood (WB) resuscitation is increasingly common in adult trauma centers and some pediatric trauma centers, as studies have noted its safety and potential superiority to component therapy (CT). Previous analyses have evaluated WB as a binary variable (any versus none), and little is known regarding the "dose response" of WB in relation to total transfusion volume (TTV) (WB/TTV ratio). METHODS Injured children younger than 18 years who received any blood transfusion within 4 hours of hospital arrival across 456 US trauma centers were included from the American College of Surgeons Trauma Quality Improvement Program database. The primary outcome was 24-hour mortality, and the secondary outcome was 4-hour mortality. Multivariate analysis was used to evaluate associations between WB administration and mortality and WB/TTV ratio and mortality. RESULTS Of 4,323 pediatric patients included in final analysis, 88% (3,786) received CT only, and 12% (537) received WB with or without CT. Compared with the CT group, WB recipients were more likely to be in shock, according to pediatric age-adjusted shock index (71% vs. 60%) and had higher median (interquartile range) Injury Severity Score (26 [17-35] vs. 25 [16-24], p = 0.007). Any WB transfusion was associated with 42% decreased odds of mortality at 4 hours (adjusted odds ratio [aOR], 0.58 [95% confidence interval, 0.35-0.97]; p = 0.038) and 54% decreased odds of mortality at 24 hours (aOR, 0.46 [0.33-0.66]; p < 0.001). Each 10% increase in WB/TTV ratio was associated with a 9% decrease in 24-hour mortality (aOR, 0.91 [0.85-0.97]; p = 0.006). Subgroup analyses for age younger than 14 years and receipt of massive transfusion (>40 mL/kg) also showed statistically significant survival benefit for 24-hour mortality. CONCLUSION In this retrospective American College of Surgeons Trauma Quality Improvement Program analysis, use of WB was independently associated with reduced 24-hour mortality in children; further, higher proportions of WB used over the total resuscitation (WB/TTV ratio) were associated with a stepwise increase in survival. LEVEL OF EVIDENCE Prognostic and Epidemiological; Level III.
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Affiliation(s)
- Insiyah Campwala
- From the Department of Surgery (I.C., A.D.-G., P.C.S., J.B.B., C.M.L.) and Department of Critical Care Medicine (P.C.S., J.B.B., C.M.L.), Trauma and Transfusion Medicine Research Center, University of Pittsburgh, Pittsburgh, PA
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2
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Aoki M, Katsura M, Matsushima K. Association Between Whole Blood Transfusion and Mortality Among Patients With Hemorrhagic Shock and Traumatic Brain Injury. Neurosurgery 2024:00006123-990000000-01337. [PMID: 39248469 DOI: 10.1227/neu.0000000000003161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Accepted: 07/27/2024] [Indexed: 09/10/2024] Open
Abstract
BACKGROUND AND OBJECTIVES Whole blood (WB) transfusion in trauma has been revisited, and recent studies have reported an association between WB and improved survival among patients with hemorrhagic shock. However, no evidence of a similar association exists for patients with hemorrhagic shock and traumatic brain injury (TBI). This study aimed to assess the association between WB and mortality among patients with hemorrhagic shock and TBI. METHODS This study retrospectively analyzed data obtained from American College of Surgeons-Trauma Quality Improvement Program during January 2020 to December 2021. Patients (age ≥18 years) requiring blood transfusion within 4 hours of hospital arrival and sustaining TBI (head Abbreviated Injury Scale >2) were included. Survival at 30 days were compared after performing 1:1 propensity score matching for demographics, injury type, vital signs on admission, TBI characteristics, injury characteristics, comorbidities, hemorrhage control procedures, hospital characteristics, and withdrawal of life support. RESULTS A total of 15 967 patients were eligible for analysis. The median age was 42 years (interquartile range: 28-60 years); 11 789 (73.8%) patients were male, and 10 102 (63.2%) patients were White. Of them, 2725 (17.0%) received WB. After a 1:1 propensity score matching, 2720 matched pairs were compared. Matched patients had 1.0 as median shock index and 79 mm Hg as the lowest systolic blood pressure requiring immediate transfusion. WB was not associated with reduced 30-day mortality, compared with non-WB (34.0% vs 34.7%, odds ratio: 0.97, 95% confidence interval: 0.87-1.09). CONCLUSION WB was not associated with reduced 30-day mortality among patients with hemorrhagic shock and TBI. These findings suggest that not all patients with hemorrhagic shock would benefit from WB.
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Affiliation(s)
- Makoto Aoki
- Advanced Medical Emergency Department and Critical Care Center, Japan Red Cross Maebashi Hospital, Maebashi, Japan
- Division of Traumatology, National Defense Medical College Research Institute, Tokorozawa, Japan
| | - Morihiro Katsura
- Division of Acute Care Surgery, Department of Surgery, University of Southern California, Los Angeles, California, USA
| | - Kazuhide Matsushima
- Division of Acute Care Surgery, Department of Surgery, University of Southern California, Los Angeles, California, USA
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3
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Milford EM, Gurney JM, Beckett A, Strandenes G, Reade MC. Type-specific whole blood still has a role in the era of low-titer O universal donor transfusion for severe trauma hemorrhage. J Trauma Acute Care Surg 2024; 97:e23-e27. [PMID: 38764142 DOI: 10.1097/ta.0000000000004369] [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: 05/21/2024]
Abstract
ABSTRACT Whole blood can be ABO-type specific (type-specific whole blood (TSWB)) or low-titer O universal donor (low-titer O whole blood (LTOWB)). Having previously used LTOWB, the US Armed Forces Blood Program began using TSWB in 1965 as a method of increasing the donor pool. In contrast to military practice, the Association for the Advancement of Blood and Biotherapies formerly the American association of blood banks (AABB), from its first guidelines in 1958 until 2018, permitted only TSWB. Attempting to reduce time to transfusion, the US military reintroduced LTOWB in the deployed environment in 2015; this practice was endorsed by the AABB in 2018 and is progressively being implemented by military and civilian providers worldwide. Low-titer O whole blood is the only practical solution prehospital. However, there are several reasons to retain the option of TSWB in hospitals with a laboratory. These include (1) as-yet ill-defined risks of immunological complications from ABO-incompatible plasma (even when this has low titers of anti-A and -B), (2) risks of high volumes of LTOWB including published historical advice (based on clinical experience) not to transfuse type-specific blood for 2 to 3 weeks following a substantial LTOWB transfusion, (3) uncertainty as to the optimal definition of "low titer," and (4) expanding the potential donor pool by allowing type-specific transfusion. Several large randomized controlled trials currently underway are comparing LTOWB with component therapy, but none address the question of LTOWB versus TSWB. There are sufficient data to suggest that the additional risks of transfusing LTOWB to non-group O recipients should be avoided by using TSWB as soon as possible. Combined with the advantage of maintaining an adequate supply of blood products in times of high demand, this suggests that retaining TSWB within the civilian and military blood supply system is desirable. TSWB should be preferred when patient blood group is confirmed in facilities with a hematology laboratory, with LTOWB reserved for patients whose blood group is unknown.
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Affiliation(s)
- Elissa M Milford
- From the 2nd Health Brigade (E.M.M.), Australian Army, Victoria Barracks, Sydney, New South Wales; Medical School and Royal Brisbane and Women's Hospital (E.M.M. and M.C.R.), Faculty of Medicine, University of Queensland, Herston, Queensland, Australia; Joint Trauma System (J.M.G.), Defense Health Agency, Joint Base San Antonio-Fort Sam Houston, Texas; Department of Surgery (J.M.G.), Uniformed Services University of the Health Sciences, Bethesda, Maryland; Canadian Forces Health Services (A.B.), Ottawa, Ontario, Canada; Department of Surgery (A.B.), St. Michael's Hospital, University of Toronto, Toronto, Ontario, Canada; Department of Immunology and Transfusion Medicine (G.S.), Haukeland University Hospital, Bergen; Medical Services (G.S.), Norwegian Armed Forces, Sessvollmoen, Norway; and Joint Health Command (M.C.R.), Campbell Park Offices, Canberra, Australian Capital Territory, Australia
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4
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Meizoso JP, Cotton BA, Lawless RA, Kodadek LM, Lynde JM, Russell N, Gaspich J, Maung A, Anderson C, Reynolds JM, Haines KL, Kasotakis G, Freeman JJ. Whole blood resuscitation for injured patients requiring transfusion: A systematic review, meta-analysis, and practice management guideline from the Eastern Association for the Surgery of Trauma. J Trauma Acute Care Surg 2024; 97:460-470. [PMID: 38531812 DOI: 10.1097/ta.0000000000004327] [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: 03/28/2024]
Abstract
INTRODUCTION Whole blood (WB) resuscitation has reemerged as a resuscitation strategy for injured patients. However, the effect of WB-based resuscitation on outcomes has not been established. The primary objective of this guideline was to develop evidence-based recommendations on whether WB should be considered in civilian trauma patients receiving blood transfusions. METHODS An Eastern Association for the Surgery of Trauma working group performed a systematic review and meta-analysis using the Grading of Recommendations Assessment, Development and Evaluation methodology. One Population, Intervention, Comparison, and Outcomes question was developed to analyze the effect of WB resuscitation in the acute phase on mortality, transfusion requirements, infectious complications, and intensive care unit length of stay. English language studies including adult civilian trauma patients comparing in-hospital WB to component therapy were included. Medline, Embase, Cochrane CENTRAL, CINAHL Plus, and Web of Science were queried. GRADEpro (McMaster University; Evidence Prime, Inc.; Ontario) was used to assess quality of evidence and risk of bias. The study was registered on International Prospective Register of Systematic Reviews (CRD42023451143). RESULTS A total of 21 studies were included. Most patients were severely injured and required blood transfusion, massive transfusion protocol activation, and/or a hemorrhage control procedure in the early phase of resuscitation. Mortality was assessed separately at the following intervals: early (i.e., emergency department, 3 hours, or 6 hours), 24 hours, late (i.e., 28 days or 30 days), and in-hospital. On meta-analysis, WB was not associated with decreased mortality. Whole blood was associated with decreased 4-hour red blood cell (mean difference, -1.82; 95% confidence interval [CI], -3.12 to -0.52), 4-hour plasma (mean difference, -1.47; 95% CI, -2.94 to 0), and 24-hour red blood cell transfusions (mean difference, -1.22; 95% CI, -2.24 to -0.19) compared with component therapy. There were no differences in infectious complications or intensive care unit length of stay between groups. CONCLUSION We conditionally recommend WB resuscitation in adult civilian trauma patients receiving blood transfusions, recognizing that data are limited for certain populations, including women of childbearing age, and therefore this guideline may not apply to these populations. LEVEL OF EVIDENCE Systematic Review/Meta-Analysis; Level III.
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Affiliation(s)
- Jonathan P Meizoso
- From the Divisions of Trauma, Surgical Critical Care, and Burns, DeWitt Daughtry Family Department of Surgery (J.P.M.), University of Miami Miller School of Medicine; Ryder Trauma Center (J.P.M.), Jackson Memorial Hospital, Miami, Florida; Department of Surgery (B.A.C.), McGovern Medical School, University of Texas Health Science Center at Houston; Red Duke Trauma Institute (B.A.C.), Memorial Hermann Hospital, Houston, Texas; Orlando Health Medical Group (R.A.L.), Orlando, Florida; Department of Surgery (L.M.K., A.M., C.A.), Yale School of Medicine, New Haven, Connecticut; Department of Surgery (J.M.L.), University of California, Davis, Sacramento; United States Air Force (J.M.L.), Travis Air Force Base, California; Burnett School of Medicine (N.R., J.J.F.), Texas Christian University, Fort Worth, Texas; Brigham and Women's Hospital (J.G.); Department of Surgery (J.G.), Harvard Medical School, Boston, Massachusetts; Louis Calder Memorial Library (J.M.R.), University of Miami Miller School of Medicine, Miami, Florida; Department of Surgery (K.L.H.), Duke University School of Medicine, Durham, North Carolina; and Inova Fairfax (G.K.), Falls Church, Virginia
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Dhillon NK, Kwon J, Coimbra R. Fluid resuscitation in trauma: What you need to know. J Trauma Acute Care Surg 2024:01586154-990000000-00789. [PMID: 39213260 DOI: 10.1097/ta.0000000000004456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/04/2024]
Abstract
ABSTRACT There have been numerous changes in resuscitation strategies for severely injured patients over the last several decades. Certain strategies, such as aggressive crystalloid resuscitation, have largely been abandoned because of the high incidence of complications and worsening of trauma-induced coagulopathy. Significant emphasis has been placed on restoring a normal coagulation profile with plasma or whole blood transfusion. In addition, the importance of the lethal consequences of trauma-induced coagulopathy, such as hyperfibrinolysis, has been easily recognized by the use of viscoelastic testing, and its treatment with tranexamic acid has been extensively studied. Furthermore, the critical role of early intravenous calcium administration, even before blood transfusion administration, has been emphasized. Other adjuncts, such as fibrinogen supplementation with fibrinogen concentrate or cryoprecipitate and prothrombin complex concentrate, are being studied and incorporated in some of the institutional massive transfusion protocols. Finally, balanced blood component transfusion (1:1:1 or 1:1:2) and whole blood have become commonplace in trauma centers in North America. This review provides a description of recent developments in resuscitation and a discussion of recent innovations and areas for future investigation.
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Affiliation(s)
- Navpreet K Dhillon
- From the Comparative Effectiveness and Clinical Outcomes Research Center (N.K.D., J.K., R.C.), and Division of Trauma and Acute Care Surgery (N.K.D., R.C.), Riverside University Health System Medical Center, Moreno Valley; Department of Surgery (N.K.D., R.C.), Loma Linda University School of Medicine, Loma Linda, California; and Division of Trauma (J.K.), Ajou University School of Medicine, Suwon, South Korea
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Fisher AD, April MD, Yazer MH, Wright FL, Cohen MJ, Maqbool B, Getz TM, Braverman MA, Schauer SG. An analysis of the effect of low titer O whole blood (LTOWB) proportions for resuscitation after trauma on 6-hour and 24-hour survival. Am J Surg 2024; 237:115900. [PMID: 39168048 DOI: 10.1016/j.amjsurg.2024.115900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2024] [Revised: 07/21/2024] [Accepted: 08/12/2024] [Indexed: 08/23/2024]
Affiliation(s)
- Andrew D Fisher
- Department of Surgery, University of New Mexico School of Medicine, Albuquerque, NM, USA; Texas Army National Guard, Austin, TX, USA.
| | - Michael D April
- Uniformed Services University of the Health Sciences, Bethesda, MD, USA
| | - Mark H Yazer
- Department of Pathology, University of Pittsburgh, Pittsburgh, PA, USA
| | - Franklin L Wright
- Department of Surgery, University of Colorado School of Medicine, Aurora, CO, USA
| | - Mitchell J Cohen
- Department of Surgery, University of Colorado School of Medicine, Aurora, CO, USA
| | - Baila Maqbool
- Department of Surgery, University of New Mexico School of Medicine, Albuquerque, NM, USA
| | - Todd M Getz
- Center for Combat and Battlefield (COMBAT) Research, University of Colorado School of Medicine, Aurora, CO, USA
| | - Maxwell A Braverman
- Department of Surgery, University of Texas Health at San Antonio, San Antonio, TX, USA; Department of Surgery, St. Luke's University Health Network, Bethlehem, PA, USA
| | - Steven G Schauer
- Uniformed Services University of the Health Sciences, Bethesda, MD, USA; Center for Combat and Battlefield (COMBAT) Research, University of Colorado School of Medicine, Aurora, CO, USA; Departments of Anesthesiology and Emergency Medicine, University of Colorado School of Medicine, Aurora, CO, USA
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Walsh MM, Fox MD, Moore EE, Johnson JL, Bunch CM, Miller JB, Lopez-Plaza I, Brancamp RL, Waxman DA, Thomas SG, Fulkerson DH, Thomas EJ, Khan HA, Zackariya SK, Al-Fadhl MD, Zackariya SK, Thomas SJ, Aboukhaled MW. Markers of Futile Resuscitation in Traumatic Hemorrhage: A Review of the Evidence and a Proposal for Futility Time-Outs during Massive Transfusion. J Clin Med 2024; 13:4684. [PMID: 39200824 PMCID: PMC11355875 DOI: 10.3390/jcm13164684] [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: 06/12/2024] [Revised: 07/26/2024] [Accepted: 08/06/2024] [Indexed: 09/02/2024] Open
Abstract
The reduction in the blood supply following the 2019 coronavirus pandemic has been exacerbated by the increased use of balanced resuscitation with blood components including whole blood in urban trauma centers. This reduction of the blood supply has diminished the ability of blood banks to maintain a constant supply to meet the demands associated with periodic surges of urban trauma resuscitation. This scarcity has highlighted the need for increased vigilance through blood product stewardship, particularly among severely bleeding trauma patients (SBTPs). This stewardship can be enhanced by the identification of reliable clinical and laboratory parameters which accurately indicate when massive transfusion is futile. Consequently, there has been a recent attempt to develop scoring systems in the prehospital and emergency department settings which include clinical, laboratory, and physiologic parameters and blood products per hour transfused as predictors of futile resuscitation. Defining futility in SBTPs, however, remains unclear, and there is only nascent literature which defines those criteria which reliably predict futility in SBTPs. The purpose of this review is to provide a focused examination of the literature in order to define reliable parameters of futility in SBTPs. The knowledge of these reliable parameters of futility may help define a foundation for drawing conclusions which will provide a clear roadmap for traumatologists when confronted with SBTPs who are candidates for the declaration of futility. Therefore, we systematically reviewed the literature regarding the definition of futile resuscitation for patients with trauma-induced hemorrhagic shock, and we propose a concise roadmap for clinicians to help them use well-defined clinical, laboratory, and viscoelastic parameters which can define futility.
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Affiliation(s)
- Mark M. Walsh
- Futile Indicators for Stopping Transfusion in Trauma (FISTT) Collaborative Group, Indiana University School of Medicine—South Bend, South Bend, IN 46617, USA; (M.D.F.); (E.E.M.); (J.L.J.); (C.M.B.); (J.B.M.); (I.L.-P.); (R.L.B.); (D.A.W.); (S.G.T.); (D.H.F.); (E.J.T.); (H.A.K.); (S.K.Z.); (M.D.A.-F.); (S.K.Z.); (S.J.T.); (M.W.A.)
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Aoki M, Abe T, Komori A, Katsura M, Matsushima K. Association between whole blood ratio and risk of mortality in massively transfused trauma patients: retrospective cohort study. Crit Care 2024; 28:253. [PMID: 39030579 PMCID: PMC11264807 DOI: 10.1186/s13054-024-05041-8] [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: 05/29/2024] [Accepted: 07/16/2024] [Indexed: 07/21/2024] Open
Abstract
BACKGROUND Although whole blood (WB) transfusion was reported to improve survival in trauma patients with hemorrhagic shock, little is known whether a higher proportion of WB is associated with an improved survival. This study aimed to evaluate the association between whole blood ratio (WBR) and the risk of mortality in trauma patients requiring massive blood transfusion. METHODS We performed a retrospective cohort study from the ACS-TQIP between 2020 and 2021. Patients were aged ≥ 18 years and received WB within 4 h of hospital arrival as a part of massive blood transfusion. Study patients were categorized into four groups based on the quartiles of WBR. Primary outcome was 24-h mortality and secondary outcome was 30-day mortality. Multivariable logistic regression analysis, fitted with generalized estimating equations, was performed to adjust for confounding factors and accounted for within-hospital clustering. RESULTS A total of 4087 patients were eligible for analysis. The median age was 37 years (interquartile range [IQR]: 27-53 years), and 85.0% of patients were male. The median number of WB transfusions was 2.3 units (IQR 2.0-4.0 units), and the total transfusion volume was 4940 ml (IQR 3350-8504). When compared to the lowest WBR quartile, the highest WBR quartile had lower adjusted 24-h mortality (adjusted odds ratio [AOR]: 0.61, 95% confidence interval [CI]: 0.46-0.81) and 30-day mortality (AOR 0.58; 95% CI 0.45-0.75). CONCLUSION The probability of mortality consistently decreased with higher WBR in trauma patients requiring massive blood transfusion.
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Affiliation(s)
- Makoto Aoki
- Advanced Medical Emergency Department and Critical Care Center, Japan Red Cross Maebashi Hospital, Maebashi, Japan.
- Division of Traumatology, National Defense Medical College Research Institute, Tokorozawa, Japan.
| | - Toshikazu Abe
- Department of Emergency and Critical Care Medicine, Tsukuba Memorial Hospital, Tsukuba, Japan
- Department of Health Services Research, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan
| | - Akira Komori
- Department of Emergency and Critical Care Medicine, Tsukuba Memorial Hospital, Tsukuba, Japan
- Department of Health Services Research, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan
| | - Morihiro Katsura
- Division of Acute Care Surgery, Department of Surgery, University of Southern California, Los Angeles, USA
| | - Kazuhide Matsushima
- Division of Acute Care Surgery, Department of Surgery, University of Southern California, Los Angeles, USA
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Hosseinpour H, Anand T, Hejazi O, Colosimo C, Bhogadi SK, Spencer A, Nelson A, Ditillo M, Magnotti LJ, Joseph B. The Role of Whole Blood Hemostatic Resuscitation in Bleeding Geriatric Trauma Patients. J Surg Res 2024; 299:26-33. [PMID: 38692185 DOI: 10.1016/j.jss.2024.03.050] [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: 10/30/2023] [Revised: 02/17/2024] [Accepted: 03/21/2024] [Indexed: 05/03/2024]
Abstract
INTRODUCTION Whole blood (WB) has recently gained increased popularity as an adjunct to the resuscitation of hemorrhaging civilian trauma patients. We aimed to assess the nationwide outcomes of using WB as an adjunct to component therapy (CT) versus CT alone in resuscitating geriatric trauma patients. METHODS We performed a 5-y (2017-2021) retrospective analysis of the Trauma Quality Improvement Program. We included geriatric (age, ≥65 y) trauma patients presenting with hemorrhagic shock (shock index >1) and requiring at least 4 units of packed red blood cells in 4 h. Patients with severe head injuries (head Abbreviated Injury Scale ≥3) and transferred patients were excluded. Patients were stratified into WB-CT versus CT only. Primary outcomes were 6-h, 24-h, and in-hospital mortality. Secondary outcomes were major complications. Multivariable regression analysis was performed, adjusting for potential confounding factors. RESULTS A total of 1194 patients were identified, of which 141 (12%) received WB. The mean ± standard deviation age was 74 ± 7 y, 67.5% were male, and 83.4% had penetrating injuries. The median [interquartile range] Injury Severity Score was 19 [13-29], with no difference among study groups (P = 0.059). Overall, 6-h, 24-h, and in-hospital mortality were 16%, 23.1%, and 43.6%, respectively. On multivariable regression analysis, WB was independently associated with reduced 24-h (odds ratio, 0.62 [0.41-0.94]; P = 0.024), and in-hospital mortality (odds ratio, 0.60 [0.40-0.90]; P = 0.013), but not with major complications (odds ratio, 0.78 [0.53-1.15]; P = 0.207). CONCLUSIONS Transfusion of WB as an adjunct to CT is associated with improved early and overall mortality in geriatric trauma patients presenting with severe hemorrhage. The findings from this study are clinically important, as this is an essential first step in prioritizing the selection of WB resuscitation for geriatric trauma patients presenting with hemorrhagic shock.
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Affiliation(s)
- Hamidreza Hosseinpour
- Division of Trauma, Critical Care, Burns, and Emergency Surgery, Department of Surgery, College of Medicine, University of Arizona, Tucson, Arizona
| | - Tanya Anand
- Division of Trauma, Critical Care, Burns, and Emergency Surgery, Department of Surgery, College of Medicine, University of Arizona, Tucson, Arizona
| | - Omar Hejazi
- Division of Trauma, Critical Care, Burns, and Emergency Surgery, Department of Surgery, College of Medicine, University of Arizona, Tucson, Arizona
| | - Christina Colosimo
- Division of Trauma, Critical Care, Burns, and Emergency Surgery, Department of Surgery, College of Medicine, University of Arizona, Tucson, Arizona
| | - Sai Krishna Bhogadi
- Division of Trauma, Critical Care, Burns, and Emergency Surgery, Department of Surgery, College of Medicine, University of Arizona, Tucson, Arizona
| | - Audrey Spencer
- Division of Trauma, Critical Care, Burns, and Emergency Surgery, Department of Surgery, College of Medicine, University of Arizona, Tucson, Arizona
| | - Adam Nelson
- Division of Trauma, Critical Care, Burns, and Emergency Surgery, Department of Surgery, College of Medicine, University of Arizona, Tucson, Arizona
| | - Michael Ditillo
- Division of Trauma, Critical Care, Burns, and Emergency Surgery, Department of Surgery, College of Medicine, University of Arizona, Tucson, Arizona
| | - Louis J Magnotti
- Division of Trauma, Critical Care, Burns, and Emergency Surgery, Department of Surgery, College of Medicine, University of Arizona, Tucson, Arizona
| | - Bellal Joseph
- Division of Trauma, Critical Care, Burns, and Emergency Surgery, Department of Surgery, College of Medicine, University of Arizona, Tucson, Arizona.
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Morgan KM, Abou Khalil E, Feeney EV, Spinella PC, Lucisano AC, Gaines BA, Leeper CM. The Efficacy of Low-Titer Group O Whole Blood Compared With Component Therapy in Civilian Trauma Patients: A Meta-Analysis. Crit Care Med 2024; 52:e390-e404. [PMID: 38483205 DOI: 10.1097/ccm.0000000000006244] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2024]
Abstract
OBJECTIVES To assess if transfusion with low-titer group O whole blood (LTOWB) is associated with improved early and/or late survival compared with component blood product therapy (CT) in bleeding trauma patients. DATA SOURCES A systematic search of PubMed, CINAHL, and Web of Science was performed from their inception through December 1, 2023. Key terms included injury, hemorrhage, bleeding, blood transfusion, and whole blood. STUDY SELECTION All studies comparing outcomes in injured civilian adults and children who received LTOWB versus CT were included. DATA EXTRACTION Data including author, publication year, sample size, total blood volumes, and clinical outcomes were extracted from each article and reported following the Meta-analysis Of Observational Studies in Epidemiology guidelines. Main outcomes were 24-hour (early) and combined 28-day, 30-day, and in-hospital (late) mortality rates between recipients of LTOWB versus CT, which were pooled using random-effects models. DATA SYNTHESIS Of 1297 studies reviewed, 24 were appropriate for analysis. Total subjects numbered 58,717 of whom 5,164 received LTOWB. Eleven studies included adults-only, seven included both adults and adolescents, and six only included children. The median (interquartile range) age for patients who received LTOWB and CT was 35 years (24-39) and 35.5 years (23-39), respectively. Overall, 14 studies reported early mortality and 22 studies reported late mortality. LTOWB was associated with improved 24-hour survival (risk ratios [RRs] [95% CI] = 1.07 [1.03-1.12]) and late (RR [95% CI] = 1.05 [1.01-1.09]) survival compared with component therapy. There was no evidence of small study bias and all studies were graded as a moderate level of bias. CONCLUSIONS These data suggest hemostatic resuscitation with LTOWB compared with CT improves early and late survival outcomes in bleeding civilian trauma patients. The majority of subjects were injured adults; multicenter randomized controlled studies in injured adults and children are underway to confirm these findings.
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Affiliation(s)
- Katrina M Morgan
- Department of Surgery and Critical Care Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA
| | | | - Erin V Feeney
- Department of Surgery and Critical Care Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Philip C Spinella
- Department of Surgery and Critical Care Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Amelia C Lucisano
- Department of Surgery and Critical Care Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Barbara A Gaines
- Department of Surgery, Division of Pediatric Surgery, University of Texas Southwestern Medical Center, Dallas, TX
| | - Christine M Leeper
- Department of Surgery and Critical Care Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA
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11
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Coulthard SL, Kaplan LJ, Cannon JW. What's new in whole blood resuscitation? In the trauma bay and beyond. Curr Opin Crit Care 2024; 30:209-216. [PMID: 38441127 DOI: 10.1097/mcc.0000000000001140] [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: 05/02/2024]
Abstract
PURPOSE OF REVIEW Transfusion therapy commonly supports patient care during life-threatening injury and critical illness. Herein we examine the recent resurgence of whole blood (WB) resuscitation for patients in hemorrhagic shock following trauma and other causes of severe bleeding. RECENT FINDINGS A growing body of literature supports the use of various forms of WB for hemostatic resuscitation in military and civilian trauma practice. Different types of WB include warm fresh whole blood (FWB) principally used in the military and low titer O cold stored whole blood (LTOWB) used in a variety of military and civilian settings. Incorporating WB initial resuscitation alongside subsequent component therapy reduces aggregate blood product utilization and improves early mortality without adversely impacting intensive care unit length of stay or infection rate. Applications outside the trauma bay include prehospital WB and use in patients with nontraumatic hemorrhagic shock. SUMMARY Whole blood may be transfused as FWB or LTOWB to support a hemostatic approach to hemorrhagic shock management. Although the bulk of WB resuscitation literature has appropriately focused on hemorrhagic shock following injury, extension to other etiologies of severe hemorrhage will benefit from focused inquiry to address cost, efficacy, approach, and patient-centered outcomes.
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Affiliation(s)
- Stacy L Coulthard
- Department of Surgery, Division of Traumatology, Surgical Critical Care and Emergency Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
- Department of Surgery, Uniformed Services University of the Health Sciences, Bethesda, Maryland
| | - Lewis J Kaplan
- Department of Surgery, Division of Traumatology, Surgical Critical Care and Emergency Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
- Surgical Critical Care, Corporal Michael J. Crescenz VA Medical Center, Philadelphia, Pennsylvania
| | - Jeremy W Cannon
- Department of Surgery, Division of Traumatology, Surgical Critical Care and Emergency Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
- Department of Surgery, Uniformed Services University of the Health Sciences, Bethesda, Maryland
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12
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Peng HT, Singh K, Rhind SG, da Luz L, Beckett A. Dried Plasma for Major Trauma: Past, Present, and Future. Life (Basel) 2024; 14:619. [PMID: 38792640 PMCID: PMC11122082 DOI: 10.3390/life14050619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Revised: 04/26/2024] [Accepted: 05/08/2024] [Indexed: 05/26/2024] Open
Abstract
Uncontrollable bleeding is recognized as the leading cause of preventable death among trauma patients. Early transfusion of blood products, especially plasma replacing crystalloid and colloid solutions, has been shown to increase survival of severely injured patients. However, the requirements for cold storage and thawing processes prior to transfusion present significant logistical challenges in prehospital and remote areas, resulting in a considerable delay in receiving thawed or liquid plasma, even in hospitals. In contrast, freeze- or spray-dried plasma, which can be massively produced, stockpiled, and stored at room temperature, is easily carried and can be reconstituted for transfusion in minutes, provides a promising alternative. Drawn from history, this paper provides a review of different forms of dried plasma with a focus on in vitro characterization of hemostatic properties, to assess the effects of the drying process, storage conditions in dry form and after reconstitution, their distinct safety and/or efficacy profiles currently in different phases of development, and to discuss the current expectations of these products in the context of recent preclinical and clinical trials. Future research directions are presented as well.
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Affiliation(s)
- Henry T. Peng
- Defence Research and Development Canada, Toronto Research Centre, Toronto, ON M3K 2C9, Canada; (K.S.); (S.G.R.)
| | - Kanwal Singh
- Defence Research and Development Canada, Toronto Research Centre, Toronto, ON M3K 2C9, Canada; (K.S.); (S.G.R.)
| | - Shawn G. Rhind
- Defence Research and Development Canada, Toronto Research Centre, Toronto, ON M3K 2C9, Canada; (K.S.); (S.G.R.)
| | - Luis da Luz
- Sunnybrook Health Sciences Centre, University of Toronto, Toronto, ON M4N 3M5, Canada;
| | - Andrew Beckett
- St. Michael’s Hospital, University of Toronto, Toronto, ON M5B 1W8, Canada;
- Royal Canadian Medical Services, Ottawa, ON K1A 0K2, Canada
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13
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Sherwood MR, Clayton S, Leeper CM, Yazer M, Moise KJ, Granger ME, Spinella PC. Receipt of RhD-positive whole blood for life-threatening bleeding in female children: A survey in alloimmunized mothers regarding minimum acceptable survival benefit relative to risk of maternal alloimmunization to anti-D. Transfusion 2024; 64 Suppl 2:S100-S110. [PMID: 38563495 DOI: 10.1111/trf.17807] [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: 12/29/2023] [Revised: 03/08/2024] [Accepted: 03/10/2024] [Indexed: 04/04/2024]
Abstract
BACKGROUND Low-titer group O whole blood (LTOWB) for treatment of hemorrhagic shock sometimes necessitates transfusion of RhD-positive units due to short supply of RhD-negative LTOWB. Practitioners must choose between using RhD-positive LTOWB when RhD-negative is unavailable against the risk to a female of childbearing potential of becoming RhD-alloimmunized, risking hemolytic disease of the fetus and newborn (HDFN) in future children, or using component therapy with RhD-negative red cells. This survey asked females with a history of red blood cell (RBC) alloimmunization about their risk tolerance of RhD alloimmunization compared to the potential for improved survival following transfusion of RhD-positive blood for an injured RhD negative female child. STUDY DESIGN AND METHODS A survey was administered to RBC alloimmunized mothers. Respondents were eligible if they were living in the United States with at least one red cell antibody known to cause HDFN and if they had at least one RBC alloimmunized pregnancy. RESULTS Responses from 107 RBC alloimmmunized females were analyzed. There were 32/107 (30%) with a history of severe HDFN; 12/107 (11%) had a history of fetal or neonatal loss due to HDFN. The median (interquartile range) absolute improvement in survival at which the respondents would accept RhD-positive transfusions for a female child was 4% (1%-14%). This was not different between females with and without a history of severe or fatal HDFN (p = .08 and 0.38, respectively). CONCLUSION Alloimmunized mothers would accept the risk of D-alloimmunization in a RhD-negative female child for improved survival in cases of life-threatening bleeding.
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Affiliation(s)
| | - Skye Clayton
- Trauma and Transfusion Medicine Research Center, Department of Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Christine M Leeper
- Trauma and Transfusion Medicine Research Center, Department of Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Mark Yazer
- Department of Pathology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Kenneth J Moise
- Department of Women's Health, Dell Medical School-UT Health, Austin, Texas, USA
| | - Marion E Granger
- Department of Epidemiology and Biostatistics, University of South Carolina, Columbia, South Carolina, USA
| | - Philip C Spinella
- Trauma and Transfusion Medicine Research Center, Department of Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
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14
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Feinberg GJ, Tillman AC, Paiva ML, Emigh B, Lueckel SN, Hynes AM, Kheirbek T. Maintaining a whole blood-centered transfusion improves survival in hemorrhagic resuscitation. J Trauma Acute Care Surg 2024; 96:749-756. [PMID: 38146960 DOI: 10.1097/ta.0000000000004222] [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: 12/27/2023]
Abstract
BACKGROUND Whole blood (WB) transfusion has been shown to improve mortality in trauma resuscitation. The optimal ratio of packed red blood cells (pRBC) to WB in emergent transfusion has not been determined. We hypothesized that a low pRBC/WB transfusion ratio is associated with improved survival in trauma patients. METHODS We analyzed the 2021 Trauma Quality Improvement Program (TQIP) database to identify patients who underwent emergent surgery for hemorrhage control and were transfused within 4 hours of hospital arrival, excluding transfers or deaths in the emergency department. We stratified patients based on pRBC/WB ratios. The primary outcome was mortality at 24 hours. Logistic regression was performed to estimate odds of mortality among ratio groups compared with WB alone, adjusting for injury severity, time to intervention, and demographics. RESULTS Our cohort included 17,562 patients; of those, 13,678 patients had only pRBC transfused and were excluded. Fresh frozen plasma/pRBC ratio was balanced in all groups. Among those who received WB (n = 3,884), there was a significant increase in 24-hour mortality with higher pRBC/WB ratios (WB alone 5.2%, 1:1 10.9%, 2:1 11.8%, 3:1 14.9%, 4:1 20.9%, 5:1 34.1%, p = 0.0001). Using empirical cutpoint estimation, we identified a 3:1 ratio or less as an optimal cutoff point. Adjusted odds ratios of 24-hour mortality for 4:1 and 5:1 groups were 2.85 (95% confidence interval [CI], 1.19-6.81) and 2.89 (95% CI, 1.29-6.49), respectively. Adjusted hazard ratios of 24-hour mortality were 2.83 (95% CI, 1.18-6.77) for 3:1 ratio, 3.67 (95% CI, 1.57-8.57) for 4:1 ratio, and 1.97 (95% CI, 0.91-4.23) for 5:1 ratio. CONCLUSION Our analysis shows that higher pRBC/WB ratios at 4 hours diminished survival benefits of WB in trauma resuscitation. Further efforts should emphasize this relationship to optimize trauma resuscitation protocols. LEVEL OF EVIDENCE Therapeutic/Care Management; Level III.
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Affiliation(s)
- Griffin J Feinberg
- From the Department of surgery (G.J.F., A.C.T., M.L.P., B.E., S.N.L., T.K.), Brown University, Alpert School of Medicine, Providence, Rhode Island; Department of Emergency Medicine (A.M.H.), and Department of Surgery (A.M.H.), University of New Mexico School of Medicine, Albuquerque, New Mexico
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15
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Yazer MH, Leeper C, Spinella PC, Emery SP, Horvath S, Seheult JN. Maternal and child life years gained by transfusing low titer group O whole blood in trauma: A computer simulation. Transfusion 2024; 64 Suppl 2:S93-S99. [PMID: 38404198 DOI: 10.1111/trf.17767] [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: 12/30/2023] [Accepted: 02/09/2024] [Indexed: 02/27/2024]
Abstract
BACKGROUND Using low titer group O whole blood (LTOWB) is increasingly popular for resuscitating trauma patients. LTOWB is often RhD-positive, which might cause D-alloimmunization and hemolytic disease of the fetus and newborn (HDFN) if transfused to RhD-negative females of childbearing potential (FCP). This simulation determined the number of life years gained by the FCP and her future children if she was resuscitated with LTOWB compared with conventional component therapy (CCT). METHODS The model simulated 500,000 injured FCPs of each age between 0 and 49 years with LTOWB mortality relative reductions (MRRs) compared with components between 0.1% and 25%. For each surviving FCP, number of life years gained was calculated using her age at injury and average life expectancy for American women. The number of expected future pregnancies for FCPs that did not survive was also based on her age at injury; each future child was assigned the maximum lifespan unless they suffered perinatal mortality or serious neurological events from HDFN. RESULTS The LTOWB group with an MRR 25% compared with CCT had the largest total life years gained. The point of equivalence for RhD-positive LTOWB compared to CCT, where life years lost due to severe HDFN was equivalent to life years gained due to FCP survival/future childbearing, occurred at an MRR of approximately 0.1%. CONCLUSION In this model, RhD-positive LTOWB resulted in substantial gains in maternal and child life years compared with CCT. A >0.1% relative mortality reduction from LTOWB offset the life years lost to HDFN mortality and severe neurological events.
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Affiliation(s)
- Mark H Yazer
- Department of Pathology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Christine Leeper
- Trauma and Transfusion Medicine Research Center, Department of Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
- Department of Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
- Department of Critical Care Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Philip C Spinella
- Trauma and Transfusion Medicine Research Center, Department of Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
- Department of Critical Care Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Stephen P Emery
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - Sarah Horvath
- Department of Obstetrics and Gynecology, Penn State College of Medicine, Hershey, Pennsylvania, USA
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16
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Smith S, Torres C. Whole lot of blood: does more equal better for survival? Trauma Surg Acute Care Open 2024; 9:e001482. [PMID: 38737812 PMCID: PMC11086429 DOI: 10.1136/tsaco-2024-001482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/14/2024] Open
Affiliation(s)
- Sophia Smith
- Boston University Chobanian & Avedisian School of Medicine, Boston, Massachusetts, USA
- Surgery, Boston Medical Center, Boston, Massachusetts, USA
| | - Crisanto Torres
- Boston University Chobanian & Avedisian School of Medicine, Boston, Massachusetts, USA
- Surgery, Boston Medical Center, Boston, Massachusetts, USA
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17
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Lammers D, Hu P, Rokayak O, Baird EW, Betzold RD, Hashmi Z, Kerby JD, Jansen JO, Holcomb JB. Preferential whole blood transfusion during the early resuscitation period is associated with decreased mortality and transfusion requirements in traumatically injured patients. Trauma Surg Acute Care Open 2024; 9:e001358. [PMID: 38666013 PMCID: PMC11043766 DOI: 10.1136/tsaco-2023-001358] [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] [Indexed: 04/28/2024] Open
Abstract
Introduction Whole blood (WB) transfusion represents a promising resuscitation strategy for trauma patients. However, a paucity of data surrounding the optimal incorporation of WB into resuscitation strategies persists. We hypothesized that traumatically injured patients who received a greater proportion of WB compared with blood product components during their resuscitative efforts would have improved early mortality outcomes and decreased transfusion requirements compared with those who received a greater proportion of blood product components. Methods Retrospective review from our Level 1 trauma center of trauma patients during their initial resuscitation (2019-2022) was performed. WB to packed red blood cell ratios (WB:RBC) were assigned to patients based on their respective blood product resuscitation at 1, 2, 3, and 24 hours from presentation. Multivariable regression models were constructed to assess the relationship of WB:RBC to 4 and 24-hour mortality, and 24-hour transfusion requirements. Results 390 patients were evaluated (79% male, median age of 33 years old, 48% penetrating injury rate, and a median Injury Severity Score of 27). Overall mortality at 4 hours was 9%, while 24-hour mortality was 12%. A significantly decreased 4-hour mortality was demonstrated in patients who displayed a WB:RBC≥1 at 1 hour (5.9% vs. 12.3%; OR 0.17, p=0.015), 2 hours (5.5% vs. 13%; OR 0.16, p=0.019), and 3 hours (5.5% vs. 13%, OR 0.18, p<0.01), while a decreased 24-hour mortality was displayed in those with a WB:RBC≥1 at 24 hours (7.9% vs. 14.6%, OR 0.21, p=0.01). Overall 24-hour transfusion requirements were significantly decreased within the WB:RBC≥1 cohort (12.1 units vs. 24.4 units, p<0.01). Conclusion Preferential WB transfusion compared with a balanced transfusion strategy during the early resuscitative period was associated with a lower 4 and 24-hour mortality, as well as decreased 24-hour transfusion requirements, in trauma patients. Future prospective studies are warranted to determine the optimal use of WB in trauma. Level of evidence Level III/therapeutic.
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Affiliation(s)
- Daniel Lammers
- The University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Parker Hu
- The University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Omar Rokayak
- The University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Emily W Baird
- The University of Alabama at Birmingham, Birmingham, Alabama, USA
| | | | - Zain Hashmi
- The University of Alabama at Birmingham, Birmingham, Alabama, USA
| | | | - Jan O Jansen
- The University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - John B Holcomb
- The University of Alabama at Birmingham, Birmingham, Alabama, USA
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18
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Torres CM, Kenzik KM, Saillant NN, Scantling DR, Sanchez SE, Brahmbhatt TS, Dechert TA, Sakran JV. Timing to First Whole Blood Transfusion and Survival Following Severe Hemorrhage in Trauma Patients. JAMA Surg 2024; 159:374-381. [PMID: 38294820 PMCID: PMC10831629 DOI: 10.1001/jamasurg.2023.7178] [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: 06/15/2023] [Accepted: 10/01/2023] [Indexed: 02/01/2024]
Abstract
Importance Civilian trauma centers have revived interest in whole-blood (WB) resuscitation for patients with life-threatening bleeding. However, there remains insufficient evidence that the timing of WB transfusion when given as an adjunct to a massive transfusion protocol (MTP) is associated with a difference in patient survival outcome. Objective To evaluate whether earlier timing of first WB transfusion is associated with improved survival at 24 hours and 30 days for adult trauma patients presenting with severe hemorrhage. Design, Setting, and Participants This retrospective cohort study used the American College of Surgeons Trauma Quality Improvement Program databank from January 1, 2019, to December 31, 2020, for adult patients presenting to US and Canadian adult civilian level 1 and 2 trauma centers with systolic blood pressure less than 90 mm Hg, with shock index greater than 1, and requiring MTP who received a WB transfusion within the first 24 hours of emergency department (ED) arrival. Patients with burns, prehospital cardiac arrest, deaths within 1 hour of ED arrival, and interfacility transfers were excluded. Data were analyzed from January 3 to October 2, 2023. Exposure Patients who received WB as an adjunct to MTP (earlier) compared with patients who had yet to receive WB as part of MTP (later) at any given time point within 24 hours of ED arrival. Main Outcomes and Measures Primary outcomes were survival at 24 hours and 30 days. Results A total of 1394 patients met the inclusion criteria (1155 male [83%]; median age, 39 years [IQR, 25-51 years]). The study cohort included profoundly injured patients (median Injury Severity Score, 27 [IQR, 17-35]). A survival curve demonstrated a difference in survival within 1 hour of ED presentation and WB transfusion. Whole blood transfusion as an adjunct to MTP given earlier compared with later at each time point was associated with improved survival at 24 hours (adjusted hazard ratio, 0.40; 95% CI, 0.22-0.73; P = .003). Similarly, the survival benefit of earlier WB transfusion remained present at 30 days (adjusted hazard ratio, 0.32; 95% CI, 0.22-0.45; P < .001). Conclusions and Relevance In this cohort study, receipt of a WB transfusion earlier at any time point within the first 24 hours of ED arrival was associated with improved survival in patients presenting with severe hemorrhage. The survival benefit was noted shortly after transfusion. The findings of this study are clinically important as the earlier timing of WB administration may offer a survival advantage in actively hemorrhaging patients requiring MTP.
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Affiliation(s)
- Crisanto M. Torres
- Division of Trauma and Acute Care Surgery, Boston Medical Center, Boston University School of Medicine, Boston, Massachusetts
| | - Kelly M. Kenzik
- Division of Trauma and Acute Care Surgery, Boston Medical Center, Boston University School of Medicine, Boston, Massachusetts
| | - Noelle N. Saillant
- Division of Trauma and Acute Care Surgery, Boston Medical Center, Boston University School of Medicine, Boston, Massachusetts
| | - Dane R. Scantling
- Division of Trauma and Acute Care Surgery, Boston Medical Center, Boston University School of Medicine, Boston, Massachusetts
| | - Sabrina E. Sanchez
- Division of Trauma and Acute Care Surgery, Boston Medical Center, Boston University School of Medicine, Boston, Massachusetts
| | - Tejal S. Brahmbhatt
- Division of Trauma and Acute Care Surgery, Boston Medical Center, Boston University School of Medicine, Boston, Massachusetts
| | - Tracey A. Dechert
- Division of Trauma and Acute Care Surgery, Boston Medical Center, Boston University School of Medicine, Boston, Massachusetts
| | - Joseph V. Sakran
- Johns Hopkins School of Medicine, Baltimore, Maryland
- Division of Acute Care Surgery, Johns Hopkins Hospital, Baltimore, Maryland
- Johns Hopkins School of Nursing, Baltimore, Maryland
- Satcher Health Leadership Institute, Morehouse School of Medicine, Atlanta, Georgia
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19
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Cao C, Yu P, Chu C, Wang Z, Xu W, Cheng F, Zhao H, Qiu Z. Magnesium hydride attenuates intestinal barrier injury during hemorrhage shock by regulating neutrophil extracellular trap formation via the ROS/MAPK/PAD4 pathway. Int Immunopharmacol 2024; 130:111688. [PMID: 38394886 DOI: 10.1016/j.intimp.2024.111688] [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: 12/15/2023] [Revised: 01/31/2024] [Accepted: 02/09/2024] [Indexed: 02/25/2024]
Abstract
Magnesium hydride (MgH2) is a hydrogen storage material that is known for its high capacity and safety and is capable of releasing hydrogen in a controlled manner when administered orally. This release of hydrogen has been associated with a range of biological effects, including anti-inflammatory properties, antioxidant activity, and protection of the intestinal barrier. Previous research has shown that neutrophil extracellular traps (NETs) play a role in the dysfunction of the intestinal barrier in conditions such as sepsis and critical illnesses. However, it remains unclear as to whether MgH2 can protect the intestinal barrier by inhibiting NET formation, and the underlying mechanisms have yet to be elucidated. A rat model of hemorrhagic shock was created, and pretreatment or posttreatment procedures with MgH2 were performed. After 24 h, samples from the small intestine and blood were collected for analysis. In vitro, human neutrophils were incubated with either phorbol-12-myristate-13-acetate (PMA) or MgH2. Reactive oxygen species generation and the expression of key proteins were assessed. The results demonstrated that MgH2 administration led to a decrease in inflammatory cytokines in the serum and mitigated distant organ dysfunction in rats with HS. Furthermore, MgH2 treatment reversed histopathological damage in the intestines, improved intestinal permeability, and enhanced the expression of tight junction proteins (TJPs) during HS. Additionally, MgH2 treatment was found to suppress NET formation in the intestines. In vitro pretreatment with MgH2 alleviated intestinal monolayer barrier disruption that was induced by NETs. Mechanistically, MgH2 pretreatment reduced ROS production and NET formation, inhibited the activation of ERK and p38, and suppressed the expression of the PAD4 protein. These findings indicated that MgH2 may inhibit NET formation in a ROS/MAPK/PAD4-dependent manner, which reduces NET-related intestinal barrier damage, thus offering a novel protective role in preventing intestinal barrier dysfunction during HS.
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Affiliation(s)
- Changkui Cao
- Department of Emergency Surgery, The First Affiliated Hospital of Bengbu Medical College, Bengbu City, Anhui Province, China; Department of Emergency, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, Jiangsu Province, China
| | - Pan Yu
- Department of Burn and Plastic Surgery, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, China
| | - Chengnan Chu
- Department of Emergency, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, Jiangsu Province, China
| | - Zhenjie Wang
- Department of Emergency Surgery, The First Affiliated Hospital of Bengbu Medical College, Bengbu City, Anhui Province, China
| | - Weiqi Xu
- Department of Emergency, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, Jiangsu Province, China
| | - Feng Cheng
- Department of Emergency Surgery, The First Affiliated Hospital of Bengbu Medical College, Bengbu City, Anhui Province, China
| | - Heng Zhao
- Department of Emergency Surgery, The First Affiliated Hospital of Bengbu Medical College, Bengbu City, Anhui Province, China
| | - Zhaolei Qiu
- Department of Emergency Surgery, The First Affiliated Hospital of Bengbu Medical College, Bengbu City, Anhui Province, China.
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20
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LaGrone LN, Stein D, Cribari C, Kaups K, Harris C, Miller AN, Smith B, Dutton R, Bulger E, Napolitano LM. American Association for the Surgery of Trauma/American College of Surgeons Committee on Trauma: Clinical protocol for damage-control resuscitation for the adult trauma patient. J Trauma Acute Care Surg 2024; 96:510-520. [PMID: 37697470 DOI: 10.1097/ta.0000000000004088] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/13/2023]
Abstract
ABSTRACT Damage-control resuscitation in the care of critically injured trauma patients aims to limit blood loss and prevent and treat coagulopathy by combining early definitive hemorrhage control, hypotensive resuscitation, and early and balanced use of blood products (hemostatic resuscitation) and the use of other hemostatic agents. This clinical protocol has been developed to provide evidence-based recommendations for optimal damage-control resuscitation in the care of trauma patients with hemorrhage.
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Affiliation(s)
- Lacey N LaGrone
- From the Department of Surgery (D.S.), University of Maryland, Baltimore, Maryland; Department of Surgery (L.N.L., C.C.), UCHealth, Loveland, Colorado; Department of Surgery (K.K), University of California San Francisco Fresno, San Francisco, California; Department of Surgery (C.H.), Tulane University, New Orleans, Louisiana; Orthopedic Surgery (A.N.M.), Washington University in St. Louis, St. Louis, Missouri; Department of Surgery (B.S.), University of Pennsylvania, Philadelphia, Pennsylvania; American Society of Anesthesiologists (R.D.), Anesthesia, Waco, Texas; Department of Surgery (E.B.), University of Washington, Seattle, Washington; and Department of Surgery (L.M.N.), University of Michigan, Ann Arbor, Michigan
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21
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Richards JE, Stein DM, Scalea TM. Damage Control Resuscitation in Traumatic Hemorrhage: It Is More Than Fixing the Holes and Filling the Tank. Anesthesiology 2024; 140:586-598. [PMID: 37982159 DOI: 10.1097/aln.0000000000004750] [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: 11/21/2023]
Abstract
Damage control resuscitation is the foundation of hemorrhagic shock management and includes early administration of plasma, tranexamic acid, and limited crystalloid-containing products.
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Affiliation(s)
- Justin E Richards
- Department of Anesthesiology, University of Maryland School of Medicine; Program in Trauma, R Adams Cowley Shock Trauma Center, Baltimore, Maryland
| | - Deborah M Stein
- Department of Surgery, University of Maryland School of Medicine; Program in Trauma, R Adams Cowley Shock Trauma Center, Baltimore, Maryland
| | - Thomas M Scalea
- Department of Surgery, University of Maryland School of Medicine; Program in Trauma, R Adams Cowley Shock Trauma Center, Baltimore, Maryland
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22
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Sperry JL, Yazer MH. Invited Commentary: Why Would We Withhold a Beneficial Treatment? Use of Low-Titer Group O-Positive Whole Blood in Women of Childbearing Age. J Am Coll Surg 2024; 238:357-358. [PMID: 37937830 DOI: 10.1097/xcs.0000000000000909] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2023]
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23
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Hess AS. What's in Your Transfusion? A Bedside Guide to Blood Products and Their Preparation. Anesthesiology 2024; 140:144-156. [PMID: 37639622 DOI: 10.1097/aln.0000000000004655] [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: 08/31/2023]
Abstract
An understanding of the contents of blood products and how they are modified before transfusion will help any physician. This article will review five basic blood products and the five most common product modifications.
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Affiliation(s)
- Aaron S Hess
- Departments of Anesthesiology and Pathology & Transfusion Medicine, University of Wisconsin-Madison, Madison, Wisconsin
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Shea SM, Mihalko EP, Lu L, Thomas KA, Schuerer D, Brown JB, Bochicchio GV, Spinella PC. Doing more with less: low-titer group O whole blood resulted in less total transfusions and an independent association with survival in adults with severe traumatic hemorrhage. J Thromb Haemost 2024; 22:140-151. [PMID: 37797692 PMCID: PMC10841654 DOI: 10.1016/j.jtha.2023.09.025] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 09/18/2023] [Accepted: 09/22/2023] [Indexed: 10/07/2023]
Abstract
BACKGROUND Low-titer group O whole blood (LTOWB) or component therapy (CT) may be used to resuscitate hemorrhaging trauma patients. LTOWB may have clinical and logistical benefits and may improve survival. OBJECTIVES We hypothesized LTOWB would improve 24-hour survival in hemorrhaging patients and would be safe and equally efficacious in non-group O compared with group O patients. METHODS Adult trauma patients with massive transfusion protocol activations were enrolled in this observational study. The primary outcome was 24-hour mortality. Secondary outcomes included 72-hour total blood product use. A Cox regression determined the independent associations with 24-hour mortality. RESULTS In total, 348 patients were included (CT, n = 180; LTOWB, n = 168). Demographics were similar between cohorts. Unadjusted 24-hour mortality was reduced in LTOWB vs CT: 8% vs 19% (P = .003), but 6-hour and 28-day mortality were similar. In an adjusted analysis with multivariable Cox regression, LTOWB was independently associated with reduced 24-hour mortality (hazard ratio, 0.21; 95% CI, 0.07-0.67; P = .004). LTOWB patients received significantly less 72-hour total blood products (80.9 [41.6-139.3] mL/kg vs 48.9 [25.9-106.9] mL/kg; P < .001). In stratified 24-hour survival analyses, LTOWB was associated with improved survival for patients in shock or with coagulopathy. LTOWB use in non-group O patients was not associated with increased mortality, organ injury, or adverse events. CONCLUSION In this hypothesis-generating study, LTOWB use was independently associated with improved 24-hour survival, predominantly in patients with shock or coagulopathy. LTOWB also resulted in a 40% reduction in blood product use which equates to a median 2.4 L reduction in transfused products.
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Affiliation(s)
- Susan M Shea
- Trauma and Transfusion Medicine Research Center, Department of Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania, USA; Department of Bioengineering, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.
| | - Emily P Mihalko
- Trauma and Transfusion Medicine Research Center, Department of Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Liling Lu
- Trauma and Transfusion Medicine Research Center, Department of Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | | | - Douglas Schuerer
- Department of Surgery, Section of Acute and Critical Care Surgery, Washington University in St. Louis School of Medicine, St. Louis, Missouri, USA
| | - Joshua B Brown
- Trauma and Transfusion Medicine Research Center, Department of Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Grant V Bochicchio
- Department of Surgery, Section of Acute and Critical Care Surgery, Washington University in St. Louis School of Medicine, St. Louis, Missouri, USA
| | - Philip C Spinella
- Trauma and Transfusion Medicine Research Center, Department of Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania, USA; Department of Critical Care, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
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Tisherman SA, Brenner ML. Contemporary Adjuncts to Hemorrhage Control. JAMA 2023; 330:1849-1851. [PMID: 37824165 DOI: 10.1001/jama.2023.16135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/13/2023]
Affiliation(s)
- Samuel A Tisherman
- Department of Surgery and the Program in Trauma, School of Medicine, University of Maryland, Baltimore
| | - Megan L Brenner
- Department of Surgery, David Geffen School of Medicine, University of California, Los Angeles
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Torres CM, Haut ER, Sakran JV. Potential Limitations for Assessing the Association of Whole Blood With Survival in Patients With Severe Hemorrhage-Reply. JAMA Surg 2023; 158:1227-1228. [PMID: 37378993 DOI: 10.1001/jamasurg.2023.1843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/29/2023]
Affiliation(s)
- Crisanto M Torres
- Division of Trauma and Acute Care Surgery, Boston University School of Medicine, Boston Medical Center, Boston, Massachusetts
| | - Elliott R Haut
- Division of Acute Care Surgery, Johns Hopkins Hospital, Baltimore, Maryland
| | - Joseph V Sakran
- Division of Acute Care Surgery, Johns Hopkins Hospital, Baltimore, Maryland
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Hsu CH, Chen CH, Chou PH. Potential Limitations for Assessing the Association of Whole Blood With Survival in Patients With Severe Hemorrhage. JAMA Surg 2023; 158:1226-1227. [PMID: 37379031 DOI: 10.1001/jamasurg.2023.1840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/29/2023]
Affiliation(s)
- Chia-Hao Hsu
- Kaohsiung Municipal Ta-Tung Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Chung-Hwan Chen
- Orthopaedic Research Center, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Pei-Hsi Chou
- Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
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Walsh D, Cunning C, Lee G, Boylan J, McLoughlin P. CAPILLARY LEAK AND EDEMA AFTER RESUSCITATION: THE POTENTIAL CONTRIBUTION OF REDUCED ENDOTHELIAL SHEAR STRESS CAUSED BY HEMODILUTION. Shock 2023; 60:487-495. [PMID: 37647080 DOI: 10.1097/shk.0000000000002215] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
ABSTRACT Normal shear stress is essential for the normal structure and functions of the microcirculation. Hemorrhagic shock leads to reduced shear stress due to reduced tissue perfusion. Although essential for the urgent restoration of cardiac output and systemic blood pressure, large volume resuscitation with currently available solutions causes hemodilution, further reducing endothelial shear stress. In this narrative review, we consider how the use of currently available resuscitation solutions results in persistent reduction in endothelial shear stress, despite successfully increasing cardiac output and systemic blood pressure. We consider how this reduced shear stress causes (1) a failure to restore normal vasomotor function and normal tissue perfusion thus leading to persistent tissue hypoxia and (2) increased microvascular endothelial permeability resulting in edema formation and impaired organ function. We discuss the need for clinical research into resuscitation strategies and solutions that aim to quickly restore endothelial shear stress in the microcirculation to normal.
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Affiliation(s)
| | - Ciara Cunning
- Department of Clinical Biochemistry, Mater Misericordiae University Hospital, Dublin, Ireland
| | | | | | - Paul McLoughlin
- School of Medicine and Conway Institute, University College Dublin, Dublin, Ireland
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Gammon RR, Meena-Leist C, Al Mozain N, Cruz J, Hartwell E, Lu W, Karp JK, Noone S, Orabi M, Tayal A, Bocquet C, Tanhehco Y. Whole blood in civilian transfusion practice: A review of the literature. Transfusion 2023; 63:1758-1766. [PMID: 37465986 DOI: 10.1111/trf.17480] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Accepted: 06/12/2023] [Indexed: 07/20/2023]
Affiliation(s)
- Richard R Gammon
- OneBlood, Scientific, Medical, Technical Direction, Florida, USA
| | - Claire Meena-Leist
- Department of Pathology and Laboratory Medicine, University of Louisville School of Medicinee, Louisville, Kentucky, USA
| | - Nour Al Mozain
- Department of Pathology and Laboratory Medicine, King Faisal Specialist Hospital & Research Centre, Riyadh, Saudi Arabia
| | | | | | - Wen Lu
- Department of Pathology, Brigham and Women's Hospital, Boston, Massachusetts, USA
| | - Julie Katz Karp
- Department of Pathology and Genomic Medicine, Thomas Jefferson University Hospital, Philadelphia, Pennsylvania, USA
| | - Susan Noone
- Administration, Vitalant, Ventura, California, USA
| | - Mustafa Orabi
- Department of Pathology and Laboratory Medicine, University of Louisville School of Medicinee, Louisville, Kentucky, USA
| | | | | | - Yvette Tanhehco
- Department of Pathology and Cell Biology, Columbia University Irving Medical Center, NewYork-Presbyterian Hospital, New York, New York, USA
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30
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Jakob DA, Müller M, Jud S, Albrecht R, Hautz W, Pietsch U. The forgotten cohort-lessons learned from prehospital trauma death: a retrospective cohort study. Scand J Trauma Resusc Emerg Med 2023; 31:37. [PMID: 37550763 PMCID: PMC10405424 DOI: 10.1186/s13049-023-01107-8] [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: 06/08/2023] [Accepted: 07/31/2023] [Indexed: 08/09/2023] Open
Abstract
BACKGROUND Trauma related deaths remain a relevant public health problem, in particular in the younger male population. A significant number of these deaths occur prehospitally without transfer to a hospital. These patients, sometimes termed "the forgotten cohort", are usually not included in clinical registries, resulting in a lack of information about prehospitally trauma deaths. The aim of the present study was to compare patients who died prehospital with those who sustained life-threatening injuries in order to analyze and potentially improve prehospital strategies. METHODS This cohort study included all primary operations carried out by Switzerland's largest helicopter emergency medical service (HEMS) between January 1, 2011, and December 31, 2021. We included all adult trauma patients with life-threatening or fatal conditions. The outcome of this study is the vital status of the patient at the end of mission, i.e. fatal or life-threatening. Injury, rescue characteristics, and interventions of the forgotten trauma cohort, defined as patients with a fatal injury (NACA score of VII), were compared with life-threatening injuries (NACA score V and VI). RESULTS Of 110,331 HEMS missions, 5534 primary operations were finally analyzed, including 5191 (93.8%) life-threatening and 343 (6.2%) fatal injuries. More than two-thirds of patients (n = 3772, 68.2%) had a traumatic brain injury without a significant difference between the two groups (p > 0.05). Thoracic trauma (44.6% vs. 28.7%, p < 0.001) and abdominal trauma (22.2% vs. 16.1%, p = 0.004) were more frequent in fatal missions whereas pelvic trauma was similar between the two groups (13.4% vs. 12.9%, p = 0.788). Pneumothorax decompression rate (17.2% vs. 3.7%, p < 0.001) was higher in the forgotten cohort group and measures for bleeding control (15.2% vs. 42.7%, p < 0.001) and pelvic belt application (2.9% vs. 13.1% p < 0.001) were more common in the life-threating injury group. CONCLUSION Chest decompression rates and measures for early hemorrhage control are areas for potential improvement in prehospital care.
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Affiliation(s)
- Dominik A Jakob
- Department of Emergency Medicine, Inselspital, Bern University Hospital, University of Bern, 3010, Bern, Switzerland.
| | - Martin Müller
- Department of Emergency Medicine, Inselspital, Bern University Hospital, University of Bern, 3010, Bern, Switzerland
| | - Sebastian Jud
- Department of Anesthesiology and Intensive Care Medicine, Cantonal Hospital St. Gallen, St. Gallen, Switzerland
| | - Roland Albrecht
- Department of Emergency Medicine, Inselspital, Bern University Hospital, University of Bern, 3010, Bern, Switzerland
- Department of Anesthesiology and Intensive Care Medicine, Cantonal Hospital St. Gallen, St. Gallen, Switzerland
- Swiss Air-Ambulance, Rega (Rettungsflugwacht/Guarde Aérienne), Zurich, Switzerland
| | - Wolf Hautz
- Department of Emergency Medicine, Inselspital, Bern University Hospital, University of Bern, 3010, Bern, Switzerland
| | - Urs Pietsch
- Department of Emergency Medicine, Inselspital, Bern University Hospital, University of Bern, 3010, Bern, Switzerland
- Department of Anesthesiology and Intensive Care Medicine, Cantonal Hospital St. Gallen, St. Gallen, Switzerland
- Swiss Air-Ambulance, Rega (Rettungsflugwacht/Guarde Aérienne), Zurich, Switzerland
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