6 They aim to reduce traumatic coagulopathy through the administration
of fresh frozen plasma, platelets, and coagulation products, in addition to packed red blood cells (RBCs). At our institution, the protocol is activated on the release of 4 or more units of RBCs and/or anticipated massive transfusion.9 Products are replaced at a ratio of 4 units of RBCs to 2 units of fresh frozen plasma. Platelets are used to maintain levels greater than 50 × 109/L and the international normalized ratio is kept less than 2.0. Cryoprecipitate is considered if fibrinogen is less than 1.0 g/L. Evidence regarding the effect of Inhibitors,research,lifescience,medical blood product ratio on mortality outcomes differs.10 Recent military experiences in Iraq and Afghanistan have seen the development of more aggressive massive transfusion protocols,
with a ratio of 1:1:1 of RBCs, Inhibitors,research,lifescience,medical fresh frozen plasma, and platelets.11 Although there is a higher proportion of penetrating trauma in these populations, early evidence suggests that similar protocols may also be associated with improvements in early mortality and coagulopathy in civilian settings.12–14 DCS involves a staged surgical approach to that injury identification and repair to minimize extensive procedures on unstable patients. DCS aims to reduce the lethal triad of acidosis, hypothermia, and coagulopathy by Inhibitors,research,lifescience,medical gaining early control of bleeding and contamination and preventing of further Inhibitors,research,lifescience,medical heat loss. However, a recent systematic review has questioned the benefit of such an approach.15 Grade The Injury
Severity Scale for the kidney is an anatomic-based description, developed by the American Association for the Surgery of Trauma (AAST) in 1989 to facilitate clinical research (Table 1), and it has been validated Inhibitors,research,lifescience,medical for clinical use.16 It classifies renal injuries into five grades in order of increasing severity. It is widely used and is a powerful predictor of clinical outcome.17,18 The grade directly correlates with the need for intervention, nephrectomy, dialysis, and mortality.17,19,20 Consequently, an accurate early assessment of grade is vital to determine management strategy. Figures 1 through through55 illustrate examples of each grade. Figure 1 Grade 1 injury. Figure 5 (A) Grade 5 injury, shattered kidney. (B) Grade 5 injury with devascularized kidney. (C) Angiogram of Grade 5 injury with devascularized kidney. Table 1 Kidney Injury Scale Batimastat inhibitor CHIR99021 Investigation The majority of renal injuries are associated with injury of other abdominal organs. In the event of suspected blunt renal injury, the indications for imaging are visible hematuria, microscopic hematuria with systolic blood pressure < 90 mm Hg, the presence of major associated injuries, or a high index of suspicion based on mechanism of injury, such as a rapid deceleration injury.21 It is important to note that absence of hematuria does not exclude renal injury.
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