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Anatomic distribution and mortality of arterial injury in the wars in Afghanistan and Iraq with comparison to a civilian benchmark.

Abstract：

OBJECTIVE:The purpose of this study was to examine the anatomic distribution and associated mortality of combat-related vascular injuries comparing them to a contemporary civilian standard. DESIGN:The Joint Trauma Theater Registry (JTTR) was queried to identify patients with major compressible arterial injury (CAI) and noncompressible arterial injury (NCAI) sites, and their outcomes, among casualties in Iraq and Afghanistan from 2003 to 2006. The National Trauma Data Bank (NTDB) was then queried over the same time frame to identify civilian trauma patients with similar arterial injuries. Propensity score-based matching was used to create matched patient cohorts from both populations for analysis. RESULTS:Registry queries identified 380 patients from the JTTR and 7020 patients from the NTDB who met inclusion criteria. Propensity score matching for age, elevated Injury Severity Score (ISS; >15), and hypotension on arrival (systolic blood pressure [SBP] <90) resulted in 167 matched patients from each registry. The predominating mechanism of injury among matched JTTR patients was explosive events (73.1%), whereas penetrating injury was more common in the NTDB group (61.7%). In the matched cohorts, the incidence of NCAI did not differ (22.2% JTTR vs 26.6% NTDB; P = .372), but the NTDB patients had a higher incidence of CAI (73.7% vs 59.3%; P = .005). The JTTR cohort was also found to have a higher incidence of associated venous injury (57.5% vs 23.4%; P < .001). Overall, the matched JTTR cohort had a lower mortality than NTDB counterparts (4.2% vs 12.6%; P = .006), a finding that was also noted among patients with NCAI (10.8% vs 36.4%; P = .008). There was no difference in mortality between matched JTTR and NTDB patients with CAI overall (2.0% vs 4.1%; P = .465), or among those presenting with Glasgow Coma Scale (GCS) <8 (28.6% vs 40.0%; P = 1.00) or shock (SBP <90; 10.5% vs 7.7%; P = 1.00). The JTTR mortality rate among patients with CAI was, however, lower among patients with ISS >15 compared with civilian matched counterparts (10.7% vs 42.4%; P = .006). CONCLUSIONS:Mortality of injured service personnel who reach a medical treatment facility after major arterial injury compares favorably to a matched civilian standard. Acceptable mortality rates within the military cohort are related to key aspects of an organized Joint Trauma System, including prehospital tactical combat casualty care, rapid medical evacuation to forward surgical capability, and implementation of clinical practice guidelines. Aspects of this comprehensive combat casualty care strategy may translate and be of value to management of arterial injury in the civilian sector.

journal_name

J Vasc Surg

journal_title

Journal of vascular surgery

authors

Markov NP,DuBose JJ,Scott D,Propper BW,Clouse WD,Thompson B,Blackbourne LH,Rasmussen TE

doi

10.1016/j.jvs.2012.02.048

subject

Has Abstract

pub_date

2012-09-01 00:00:00

pages

728-36

issue

eissn

0741-5214

issn

1097-6809

pii

S0741-5214(12)00399-0

journal_volume

pub_type

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Anatomic distribution and mortality of arterial injury in the wars in Afghanistan and Iraq with comparison to a civilian benchmark.