After 800 Mtp Events, Mortality Due to Hemorrhagic Shock Remains High and Unchanged Despite Several In-Hospital Hemorrhage Control Advancements.

BACKGROUND: Numerous advancements in hemorrhage control and volume replacement that comprise damage control resuscitation (DCR) have been implemented in the last decade to reduce deaths from bleeding. We sought to determine the impact of DCR interventions on mortality over 12 years in a massive transfusion protocol (MTP) population. We hypothesized that mortality would be decreased in later years, which would have used more DCR interventions. STUDY DESIGN: This was a retrospective review of all MTP patients treated at a large regional Level I trauma center from 2008 to 2019. Interventions by year of implementation examined included MTP 1:1 ratio (2009), liquid plasma (2010), tranexamic acid (2012), prehospital tourniquets (2013), REBOA/TEG (2017), satellite blood station (2018), and whole blood transfusion (2019). Relative risk and odds of mortality for DCR interventions were examined. RESULTS: There were 824 MTP patients included. The cohort was primarily male (80.6%) injured by penetrating mechanism (68.1%) with median (interquartile range) age 31 years (23-44) and New Injury Severity Score 25 (16-34). Overall mortality was unchanged [(38.3%-56.6%); P = 0.26]. Tourniquets (P = 0.02) and whole blood (WB) (P = 0.03) were associated with lower unadjusted mortality; only tourniquets remained significant after adjustment (OR: 0.39; 95% CI: 0.17-0.89; P = 0.03). CONCLUSIONS: Despite lower mortality with use of tourniquets and WB, mortality rates due to hemorrhage have not improved at our high MTP volume institution, suggesting implementation of new in-hospital strategies is insufficient to reduce mortality. Future efforts should be directed toward moving hemorrhage control and effective resuscitation interventions to the injury scene.

Computed tomography angiography in the "no-zone" approach era for penetrating neck trauma: A systematic review.

BACKGROUND: Penetrating neck trauma (PNT) continues to present a diagnostic dilemma. Practice guidelines advocate the use of computed tomography angiography (CTA) for suspected vascular or aerodigestive injuries in all neck zones. There is also an evolving evidence of "no-zone" approach where the decision to obtain a CTA is guided by physical examination findings and clinical presentation. The aim of this systematic review was to examine existing literature on the diagnostic accuracy of CTA as an integral component of the no-zone approach in stable patients with PNT. METHODS: We performed a systematic review using an electronic search of three databases (PubMed, Medline, Cochrane Review) from 2000 to 2017. RESULTS: A total of 5 prospective and 8 retrospective studies were included. The sensitivity of CTA ranged from 83% to 100%; specificity, from 61% to 100%; positive predictive value, from 30% to 100%; and negative predictive value, from 90% to 100%. Three studies reported high sensitivity and specificity for the detection of vascular injuries but low specificity for aerodigestive tract injuries. When stratified by clinical presentation, CTA had a sensitivity of 89.5% to 100% and specificity of 61% to 100% in stable patients presenting with soft signs (SSs). In a combined group of stable patients with either hard signs (HSs) or SSs, the sensitivity of CTA was 94.4% to 100% and the specificity was 96.7% to 100%. Among patients presenting with HSs, the sensitivity of CTA was 78.6% to 90% and the specificity was 100%. CONCLUSIONS: This is the first systematic review to examine the role of CTA in PNT. In combination with physical examination, CTA demonstrated a reliable high sensitivity and specificity for detecting injuries in PNT in stable patients with SSs of injury and select patients with HSs of injury. These results support the management of PNT using no-zone approach based on physical examination and the use of CTA in stable patients. LEVEL OF EVIDENCE: Systematic review, level IV.

Failure to Rescue: A Quality Improvement Imperative in Achieving Zero Death in Damage Control Laparotomy Patients.

Failure to rescue (FTR), defined as death after a major complication in surgical patients, is being used to measure outcomes for quality improvement. Major complications frequently occur in patients undergoing damage control laparotomy (DCL). No previous FTR studies have looked specifically into DCL patients. The aim of this study was to examine risk factors of FTR and identify potential areas for targeted quality improvement in DCL patients. A 10-year retrospective review of all consecutive adult trauma patients who underwent DCL at a Level I trauma center was performed. Demographic and clinical variables were examined for association with FTR. Multivariate regression analysis was performed to identify risk factors of FTR in DCL patients. A total of 199 DCL patients were analyzed. Overall DCL mortality observed was 11.1 per cent (n = 22/199) and overall FTR for the cohort was n = 16/199. FTR represented 72 per cent (n = 16/22) of the total mortality. The significantly increased risk of FTR was associated with older age (P = 0.027), lower initial Glasgow Coma Scale score (P = 0.037), more units of packed red blood cells (P = 0.028), and respiratory complications (P = 0.035). Renal and infectious complications did not significantly increase the risk of FTR in this population. FTR is an important benchmark of quality for trauma patients. This study elucidates potential initial characteristics and complications related to FTR in DCL patients. Efforts in achieving zero death from FTR can potentially improve overall mortality in this subset of patients. Future quality interventions to help minimize FTR should target these specific areas.

Ventilator-Associated Pneumonia: How Do the Different Criteria for Diagnosis Match Up?

Ventilator-associated pneumonia (VAP) affects up to 30 per cent of ICU patients and has been associated with increased morbidity and mortality. We identified factors associated with prolonged latency of VAP and evaluated its effects on survival and additional outcomes. We also determined the sensitivity of various clinical definitions of VAP, including the Centers for Disease Control and Prevention (CDC) 2013 criteria. We hypothesized that the CDC 2013 criteria would have poor sensitivity. We collected data on 102 subjects who developed VAP between 2012 and 2017. We conducted a Kaplan-Meier survival analysis with Cox proportional hazards regression and generalized linear models/ANOVA to look at predictor variables along with multivariate models for each outcome. White patients, nonsurgical patients, patients with renal failure, altered mental status, increased FiO2, and increased positive end-expiratory pressure had worse survival. Trauma patients, patients with positive sputum cultures, and patients with suspected pneumonia had better survival. Sensitivity of the CDC 2013 criteria was only 44.1 per cent. Our results emphasize the importance of having a high index of suspicion for VAP in ventilator-dependent patients. The 2013 CDC criteria failed to detect 55.9 per cent of confirmed VAP cases. These results are concerning because undetected VAP can have devastating consequences for patients.

Bicycle lanes: Are we running in circles or cycling in the right direction?

BACKGROUND: The number of urban bicyclists has grown exponentially across the United States. Bike lanes were created to promote a safe environment for both motorist and cyclists, but few studies have specifically addressed the outcomes of these interventions. The aim of this study was to analyze the effect of bike lanes on bicycle usage and safety in a major urban city. METHODS: A retrospective chart review of consecutive adult trauma patients presenting at an urban Level I trauma center due to motor vehicle versus bicycle collisions from January 1, 2007, to January 28, 2017, was performed. Cohorts were stratified into prebicycle and postbicycle lane implementation for analysis. RESULTS: Bicycle use during the study period increased almost three fold (1,672 vs. 6,060, p < 0.0001). There was also a spike in the percent of yearly bicyclists as trauma patients during the 10-year period (0.7% vs. 1.5%, p < 0.05). A total of 184 patients brought to the trauma center were identified. Significant differences between the prebike lane and postbike lane groups were identified for average Injury Severity Score (12.7 ± 1.7 vs. 8.0 ± 0.6 p = 0.0134), Glasgow Coma Scale score on arrival (12.6 ± 0.7 vs. 13.9 ± 0.2, p = 0.0171), proportion of head and face injuries (59.4% to 38.8%, p = 0.047), and patients requiring surgical intervention (100% to 55.9%, p < 0.0001). CONCLUSION: As bicycle lanes become increasing popular in US cities, it is important to review the success of this intervention on improving safety. Preliminary results from this study suggest that the implementation of urban bike lanes improved bicyclist safety. Further studies should focus on specific injury prevention programs, which could help to target areas such as helmet use and riding a bicycle while impaired to help improve overall safety. LEVEL OF EVIDENCE: Prognostic and epidemiological, level IV.

Prehospital tourniquet use in penetrating extremity trauma: Decreased blood transfusions and limb complications.

BACKGROUND: Despite increasing popularity of prehospital tourniquet use in civilians, few studies have evaluated the efficacy and safety of tourniquet use. Furthermore, previous studies in civilian populations have focused on blunt trauma patients. The objective of this study was to determine if prehospital tourniquet use in patients with major penetrating trauma is associated with differences in outcomes compared to a matched control group. METHODS: An 8-year retrospective analysis of adult patients with penetrating major extremity trauma amenable to tourniquet use (major vascular trauma, traumatic amputation and near-amputation) was performed at a Level I trauma center. Patients with prehospital tourniquet placement (TQ) were identified and compared to a matched group of patients without tourniquets (N-TQ). Univariate analysis was used to compare outcomes in the groups. RESULTS: A total of 204 patients were matched with 127 (62.3%) in the prehospital TQ group. No differences in patient demographics or injury severity existed between the two groups. Average time from tourniquet application to arrival in the emergency department (ED) was 22.5 ± 1.3 minutes. Patients in the TQ group had higher average systolic blood pressure on arrival in the ED (120 ± 2 vs. 112 ± 2, p = 0.003). The TQ group required less total PRBCs (2.0 ± 0.1 vs. 9.3 ± 0.6, p < 0.001) and FFP (1.4 ± 0.08 vs. 6.2 ± 0.4, p < 0.001). Tourniquets were not associated with nerve palsy (p = 0.330) or secondary infection (p = 0.43). Fasciotomy was significantly higher in the N-TQ group (12.6% vs. 31.4%, p < 0.0001) as was limb amputation (0.8% vs. 9.1%, p = 0.005). CONCLUSION: This study demonstrated that prehospital tourniquets could be safely used to control bleeding in major extremity penetrating trauma with no increased risk of major complications. Prehospital tourniquet use was also associated with increased systolic blood pressure on arrival to the ED, decreased blood product utilization and decreased incidence of limb related complications, which may lead to improved long-term outcomes and increased survival in trauma patients. LEVEL OF EVIDENCE: Therapeutic, level IV.

Hemostatic resuscitation during surgery improves survival in patients with traumatic-induced coagulopathy.

BACKGROUND: Although hemostatic resuscitation with a 1:1 ratio of fresh-frozen plasma (FFP) to packed red blood cells (PRBC) after severe hemorrhage has been shown to improve survival, its benefit in patients with traumatic-induced coagulopathy (TIC) after >10 units of PRBC during operation has not been elucidated. We hypothesized that a survival benefit would occur when early hemostatic resuscitation was used intraoperatively after injury in patients with TIC. METHODS: A 7-year retrospective study of patients with emergency department diagnosis of TIC after transfusion of >10 units of PRBC in the operating room. TIC was defined as initial emergency department international normalized ratio > 1.2, prothrombin time > 16 seconds, and partial thromboplastin time > 50 seconds. Patients were divided into FFP:PRBC ratios of 1:1, 1:2, 1:3, and 1:4. Patients with diagnosis of TIC who received transfusion of both FFP and PRBC during surgery were included. Other variables evaluated included age, gender, mechanism of injury, initial base deficit, mean operative time, trauma intensive care unit length of stay (TICU LOS) and Injury Severity Score. The primary outcome measure evaluated was the impact of the early FFP:PRBC ratio on mortality. RESULTS: Four hundred thirty-five patients underwent emergency operations postinjury and received FFP with >10 units of PRBC in the operating room; 135 (31.0%) of these patients had TIC and 53 died (39.5% mortality). Mean operative time was 137 minutes (SD +/- 49). There were no differences with regard to age, gender, mechanism of injury, initial base deficit, or Injury Severity Score among all groups. A significant difference in mortality was found in patients who received >10 units of PRBC when FFP:PRBC ratio was 1:1 versus 1:4 (28.2% vs. 51.1%, p = 0.03). Intermediate mortality rates were noted in patients with 1:2 and 1:3 ratios (38% and 40%, respectively). From a linear regression model, 13 days of increased TICU LOS was observed among 1:4 group compared with 1:1 group (p < 0.01). CONCLUSION: TIC is common after severe injury and is associated with a high mortality in patients transfused with >10 units of PRBC during surgery. Early hemostatic resuscitation during first hours after injury improves survival with shorter TICU LOS in patients with TIC.

Impact of obesity in damage control laparotomy patients.

BACKGROUND: Obesity is an independent predictor of increased morbidity and mortality in critically injured trauma patients. We hypothesized that obese patients in need of damage control laparotomy (DCL) will encounter an increase incidence of postsurgical complications with a concomitant increase mortality when compared with a cohort of nonobese patients. METHODS: All adult trauma patients who underwent DCL during a 4-year period at a Level I Trauma Center were retrospectively reviewed. Patients were categorized into nonobese (body mass index [BMI] < or = 29 kg/m), obese (BMI 30-39 kg/m), and severely obese (BMI > or = 40 kg/m) groups. Outcome measures included the occurrence of postoperative infectious complications, failure of primary abdominal wall fascial closure, acute respiratory distress syndrome, acute renal insufficiency, multiple system organ failure, days of ventilator support, hospital length of stay, and death. RESULTS: During a 4-year period, 12,759 adult trauma patients were admitted to our Level I Trauma Center of which 1,812 (14.2%) underwent emergent laparotomy. Of these, 104 (5.7%) were treated with DCL: nonobese, n = 51 (49%); obese, n = 38 (37%); and severely obese, n = 15 (14%). In a multivariate adjusted model, multiple system organ failure was 1.82 times more likely in severely obese (95% CI: 1.14-2.90) and 1.74 times more likely in the obese patients (95% CI: 1.14-2.66) when compared with patients with normal BMI after DCL (p < 0.01). In the severely obese patients undergoing DCL, significantly elevated prevalence ratios (PR) for development of postoperative infectious complications, acute renal insufficiency, and failure of primary abdominal wall fascial closure were 1.75, 3.07, and 2.62, respectively. Days of ventilator support, length of stay, and mortality rates were significantly higher in severely obese patients (24 days, 27 days, and 60%) compared with obese (14 days, 14 days, and 21%) and nonobese (9.8 days, 14 days, and 28%) patients. CONCLUSION: Severe obesity was significantly associated with adverse outcomes and increased resource utilization in trauma patients treated with DCL. Measures to improve outcomes in this vulnerable patient population must be directed at multiple levels of health care.