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da Luz LT, Shah PS, Strauss R, Mohammed AA, D'Empaire PP, Tien H, Nathens AB, Nascimento B. Does the evidence support the importance of high transfusion ratios of plasma and platelets to red blood cells in improving outcomes in severely injured patients: a systematic review and meta-analyses. Transfusion 2019; 59:3337-3349. [PMID: 31614006 PMCID: PMC6900194 DOI: 10.1111/trf.15540] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 08/13/2019] [Accepted: 08/21/2019] [Indexed: 12/13/2022]
Abstract
BACKGROUND Deaths by exsanguination in trauma are preventable with hemorrhage control and resuscitation with allogeneic blood products (ABPs). The ideal transfusion ratio is unknown. We compared efficacy and safety of high transfusion ratios of FFP:RBC and PLT:RBC with low ratios in trauma. STUDY DESIGN AND METHODS Medline, Embase, Cochrane, and Controlled Clinical Trials Register were searched. Observational and randomized data were included. Risk of bias was assessed using validated tools. Primary outcome was 24-h and 30-day mortality. Secondary outcomes were exposure to ABPs and improvement of coagulopathy. Meta-analysis was conducted using a random-effects model. Strength and evidence quality were graded using GRADE profile RESULTS: 55 studies were included (2 randomized and 53 observational), with low and moderate risk of bias, respectively, and overall low evidence quality. The two RCTs showed no mortality difference (odds ratio [OR], 1.35; 95% confidence interval [CI], 0.40-4.59). Observational studies reported lower mortality in high FFP:RBCs ratio (OR, 0.38 [95% CI, 0.22-0.68] for 1:1 vs. <1:1; OR, 0.42 [95% CI, 0.22-0.81] for 1:1.5 vs. <1:1.5; and OR, 0.47 [95% CI, 0.31-0.71] for 1:2 vs. <1:2, respectively). Meta-analyses in observational studies showed no difference in exposure to ABPs. No data on coagulopathy for meta-analysis was identified. CONCLUSIONS Meta-analyses in observational studies suggest survival benefit and no difference in exposure to ABPs. No survival benefit in RCTs was identified. These conflicting results should be interpreted with caution. Studies are mostly observational, with relatively small sample sizes, nonrandom treatment allocation, and high potential for confounding. Further research is warranted.
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Affiliation(s)
| | - Prakesh S. Shah
- Department of PediatricsMount Sinai HospitalTorontoOntarioCanada
| | - Rachel Strauss
- Department SurgerySunnybrook Health Sciences CentreTorontoOntarioCanada
| | | | - Pablo Perez D'Empaire
- Department Anesthesia, Sunnybrook Health Sciences CentreUniversity of TorontoTorontoOntarioCanada
| | - Homer Tien
- Department SurgerySunnybrook Health Sciences CentreTorontoOntarioCanada
| | - Avery B. Nathens
- Department SurgerySunnybrook Health Sciences CentreTorontoOntarioCanada
| | - Barto Nascimento
- Department SurgerySunnybrook Health Sciences CentreTorontoOntarioCanada
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Margarido C, Ferns J, Chin V, Ribeiro T, Nascimento B, Barrett J, Herer E, Halpern S, Andrews L, Ballatyne G, Chapmam M, Gomes J, Callum J. Massive hemorrhage protocol activation in obstetrics: a 5-year quality performance review. Int J Obstet Anesth 2018; 38:37-45. [PMID: 30509680 DOI: 10.1016/j.ijoa.2018.10.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Revised: 09/24/2018] [Accepted: 10/13/2018] [Indexed: 11/19/2022]
Abstract
BACKGROUND A structured approach to hemorrhagic emergencies in obstetrics has gained popularity with the implementation of massive hemorrhage protocols. The trauma literature suggests that routine quality reviews should be in place to improve patient outcomes. The aim of this study was to develop quality indicators and assess compliance by the clinical team. METHODS A multidisciplinary team set the institutional quality indicators for the massive hemorrhage protocol review. A retrospective review of all obstetrical massive hemorrhage protocol activation events from September 2010 to January 2015 was performed. All protocol events occurred before the creation of the quality indicators. Data were retrieved from patient records. RESULTS There were 17 (0.09%) protocol activations for 19 790 deliveries during the study period. All 17 (100%) patients received at least one unit of red blood cells. Overactivation, defined as the transfusion of <2 units of red blood cells, occurred in two cases (12%). Common causes of non-compliance were: 24% (4/17) temperature monitoring, 18% (3/17) lactate measurement, 41% (7/17) arterial blood gas sampling, and 18% (3/17) hemoglobin maintenance within the target range of 55-95 g/L. Admission to intensive care and peripartum hysterectomy occurred in 12 and 5 cases (71% and 29%), respectively. CONCLUSIONS Suboptimal compliance was found in multiple areas, which may be attributable to the low frequency of activation of our massive haemorrhage protocol in obstetrics. The quality targets identified in this report can act as a basis for other institutions developing quality indicators to evaluate performance.
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Affiliation(s)
- C Margarido
- Department of Obstetrics Anaesthesia, Division of Obstetrical Anaesthesia, Sunnybrook Health Sciences Centre, Toronto, ON, Canada.
| | - J Ferns
- Department of Obstetrics Anaesthesia, Division of Obstetrical Anaesthesia, Sunnybrook Health Sciences Centre, Toronto, ON, Canada
| | - V Chin
- Department of Transfusion Medicine, Sunnybrook Health Sciences Centre, Toronto, ON, Canada
| | - T Ribeiro
- Department of Obstetrics Anaesthesia, Division of Obstetrical Anaesthesia, Sunnybrook Health Sciences Centre, Toronto, ON, Canada
| | - B Nascimento
- Department of General Surgery, Sunnybrook Health Sciences Centre, Toronto, ON, Canada
| | - J Barrett
- Department of Obstetrics and Gynecology, Sunnybrook Health Sciences Centre, Toronto, ON, Canada
| | - E Herer
- Department of Obstetrics and Gynecology, Sunnybrook Health Sciences Centre, Toronto, ON, Canada
| | - S Halpern
- Department of Obstetrics Anaesthesia, Division of Obstetrical Anaesthesia, Sunnybrook Health Sciences Centre, Toronto, ON, Canada
| | - L Andrews
- Department of Women and Babies, Sunnybrook Health Sciences Centre, Toronto, ON, Canada
| | - G Ballatyne
- Department of Women and Babies, Sunnybrook Health Sciences Centre, Toronto, ON, Canada
| | - M Chapmam
- Department of Critical Care Medicine, Sunnybrook Health Sciences Centre, Toronto, ON, Canada
| | - J Gomes
- Department of Evaluative Clinical Sciences, Sunnybrook Health Sciences Centre, Toronto, ON, Canada; Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
| | - J Callum
- Department of Transfusion Medicine, Sunnybrook Health Sciences Centre, Toronto, ON, Canada
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Flint AWJ, McQuilten ZK, Wood EM. Massive transfusions for critical bleeding: is everything old new again? Transfus Med 2018; 28:140-149. [PMID: 29607593 DOI: 10.1111/tme.12524] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Revised: 08/11/2017] [Accepted: 03/07/2018] [Indexed: 12/19/2022]
Abstract
Massive transfusion or major haemorrhage protocols have been widely adopted in the treatment of critically bleeding patients. Following evidence that higher ratios of transfused plasma and platelets to red blood cells may offer survival benefits in military trauma patients, these ratios are now commonly incorporated into massive transfusion protocols. They more closely resemble the effects of whole blood transfusion, which in the second half of last century was largely replaced by individual blood component transfusion based on laboratory-guided indicators. However, high-quality evidence to guide transfusion support for critically bleeding patients across the range of bleeding contexts is lacking, including for both trauma and non-trauma patients. More data on major haemorrhage support and clinical outcomes are needed to inform guidelines and practice.
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Affiliation(s)
- A W J Flint
- The Australian and New Zealand Intensive Care Research Centre, Department of Epidemiology and Preventive Medicine, Monash University, Melbourne, Victoria, Australia.,Transfusion Research Unit, Department of Epidemiology and Preventive Medicine, Monash University, Melbourne, Victoria, Australia.,Royal Australian Navy, Australian Defence Force, Canberra, Australian Capital Territory, Australia
| | - Z K McQuilten
- The Australian and New Zealand Intensive Care Research Centre, Department of Epidemiology and Preventive Medicine, Monash University, Melbourne, Victoria, Australia.,Transfusion Research Unit, Department of Epidemiology and Preventive Medicine, Monash University, Melbourne, Victoria, Australia.,Department of Clinical Haematology, Monash Health, Melbourne, Victoria, Australia
| | - E M Wood
- Transfusion Research Unit, Department of Epidemiology and Preventive Medicine, Monash University, Melbourne, Victoria, Australia.,Department of Clinical Haematology, Monash Health, Melbourne, Victoria, Australia
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Abstract
Haemorrhage in the setting of severe trauma is associated with significant morbidity and mortality. There is increasing awareness of the important role fibrinogen plays in traumatic haemorrhage. Fibrinogen levels fall precipitously in severe trauma and the resultant hypofibrinogenaemia is associated with poor outcomes. Hence, it has been postulated that early fibrinogen replacement in severe traumatic haemorrhage may improve outcomes, although, to date there is a paucity of high quality evidence to support this hypothesis. In addition there is controversy regarding the optimal method for fibrinogen supplementation. We review the current evidence regarding the role of fibrinogen in trauma, the rationale behind fibrinogen supplementation and discuss current research.
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