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            "title": "Duration of red cell storage influences mortality after trauma",
            "creators": [
                {
                    "creatorType": "author",
                    "firstName": "Jordan A.",
                    "lastName": "Weinberg"
                },
                {
                    "creatorType": "author",
                    "firstName": "Gerald",
                    "lastName": "McGwin"
                },
                {
                    "creatorType": "author",
                    "firstName": "Marianne J.",
                    "lastName": "Vandromme"
                },
                {
                    "creatorType": "author",
                    "firstName": "Marisa B.",
                    "lastName": "Marques"
                },
                {
                    "creatorType": "author",
                    "firstName": "Sherry M.",
                    "lastName": "Melton"
                },
                {
                    "creatorType": "author",
                    "firstName": "Donald A.",
                    "lastName": "Reiff"
                },
                {
                    "creatorType": "author",
                    "firstName": "Jeffrey D.",
                    "lastName": "Kerby"
                },
                {
                    "creatorType": "author",
                    "firstName": "Loring W.",
                    "lastName": "Rue"
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            "abstractNote": "BACKGROUND: Although previous studies have identified an association between the transfusion of relatively older red blood cells (RBCs) (storage ≥ 14 days) and adverse outcomes, they are difficult to interpret because the majority of patients received a combination of old and fresh RBC units. To overcome this limitation, we compared in-hospital mortality among patients who received exclusively old versus fresh RBC units during the first 24 hours of hospitalization.\nMETHODS: Patients admitted to a Level I trauma center between January 2000 and May 2009 who received ≥ 1 unit of exclusively old (≥ 14 days) vs. fresh (< 14 days) RBCs during the first 24 hours of hospitalization were identified. Risk ratios (RRs) and 95% confidence intervals (CIs) were calculated for the association between mortality and RBC age, adjusted for patient age, Injury Severity Score, gender, receipt of fresh frozen plasma or platelets, RBC volume, brain injury, and injury mechanism (blunt or penetrating).\nRESULTS: One thousand six hundred forty-seven patients met the study inclusion criteria. Among patients who were transfused 1 or 2 RBC units, no difference in mortality with respect to RBC age was identified (adjusted RR, 0.97; 95% CI, 0.72-1.32). Among patients who were transfused 3 or more RBC units, receipt of old versus fresh RBCs was associated with a significantly increased risk of mortality, with an adjusted RR of 1.57 (95% CI, 1.14-2.15). No difference was observed concerning the mean number of old versus fresh units transfused to patients who received 3 or more units (6.05 vs. 5.47, respectively; p = 0.11).\nCONCLUSION: In trauma patients undergoing transfusion of 3 or more RBC units within 24 hour of hospital arrival, receipt of relatively older blood was associated with a significantly increased mortality risk. Reservation of relatively fresh RBC units for the acutely injured may be advisable.",
            "publicationTitle": "The Journal of Trauma",
            "publisher": "",
            "place": "",
            "date": "Dec 2010",
            "volume": "69",
            "issue": "6",
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            "pages": "1427-1431; discussion 1431-1432",
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            "title": "Fresh frozen plasma (FFP) use during massive blood transfusion in trauma resuscitation",
            "creators": [
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                    "firstName": "Biswadev",
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                    "lastName": "Mori"
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                    "firstName": "Mark",
                    "lastName": "Fitzgerald"
                },
                {
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                    "firstName": "Eldho",
                    "lastName": "Paul"
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                    "firstName": "Alison",
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            "abstractNote": "INTRODUCTION: Recent retrospective studies have found high fresh frozen plasma (FFP) to packed red blood cell (PRBC) ratios during trauma resuscitation to be associated with improved mortality. Whilst this association may be related to a mortality bias present in these studies, there has been an overall tendency towards a 1:1 FFP:PRBC ratio in massive transfusion guidelines worldwide. The aim of this study was to retrospectively review the administration of FFP in patients undergoing massive transfusion during trauma resuscitation, to add to the evidence base for massive transfusion guidelines.\nMATERIALS AND METHODS: Multi-trauma patients who were administered blood transfusions of 5units or more of packed red blood cells (PRBCs) in the first 4h were included in this study. Mortality was the primary endpoint with length of hospital stay, ICU hours and mechanically ventilated hours secondary endpoints.\nRESULTS: There were 331 patients included in this study with a median Injury Severity Score (ISS) of 36 (25-50) and a mortality of 29.9%. There was little change in the ratio of FFP:PRBC transfused per patient from 2005 to 2008. A low FFP:PRBC ratio in the first 4h of resuscitation, older age, low initial GCS and coagulopathy on presentation were significant independent factors associated with mortality. When deaths in the first 24h were excluded, the FFP:PRBC ratio had no association with mortality.\nDISCUSSION: This study has shown increased initial survival in association with higher FFP:PRBC ratios during massive transfusion in a population with a high proportion of blunt injuries. The association is difficult to interpret because of an inherent survival bias. The optimal ratio of FFP:PRBC during massive transfusion may be different to 1:1 and further prospective research is required. There is now an increasing need for well designed randomised controlled trials to determine the best FFP:PRBC ratio for the resuscitation of blunt multi-trauma patients.",
            "publicationTitle": "Injury",
            "publisher": "",
            "place": "",
            "date": "Jan 2010",
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            "abstractNote": "Massive transfusion protocol (MTP) with fresh-frozen plasma and packed red blood cells (PRBCs) in a 1:1 ratio is one of the most common resuscitative strategies used in patients with severe hemorrhage. There are no studies to date that examine the best postoperative hematocrit range as a marker for survival after MTP. We hypothesize a postoperative hematocrit dose-dependent survival benefit in patients receiving MTP. This was a 53-month retrospective analysis of patients with intra-abdominal injuries requiring surgery and transfusion of 10 units PRBCs or more at a single Level I trauma center. Groups were defined by postoperative hematocrit (less than 21, 21 to 29, 29.1 to 39, and 39 or more). Kaplan-Meier (KM) survival probability was calculated. One hundred fifty patients requiring operative abdominal explorations and 10 units PRBCs or more were identified. There were no significant differences in demographics between groups. When comparing postoperative hematocrit groups, relative to a hematocrit of less than 21 per cent in KM survival analysis, an overall survival advantage was only evident in patients transfused to hematocrits 29.1 to 39 per cent (P < 0.03; odds ratio [OR], 0.284; 95% confidence interval [CI], 0.089 to 0.914). This survival advantage was not seen in the other groups (21 to 29: OR, 0.352; 95% CI, 0.103 to 1.195 or 39% or greater: OR, 0.107; 95% CI, 0.010 to 1.121). This is the first study to examine the impact of postoperative hematocrit as an indicator of survival after MTP in the trauma patient. Transfusion to hematocrits between 29.1 and 39 per cent conveyed a survival benefit, whereas resuscitation to supraphysiologic hematocrits 39 per cent or greater conveyed no additional survival benefit. This study highlights the need for judicious PRBC administration during MTP and its potential impact on survival in patients with postoperative supraphysiologic hematocrits.",
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                    "lastName": "Allen"
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                    "lastName": "Jouria"
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