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Observational Study
. 2016 Mar;103(4):366-73.
doi: 10.1002/bjs.10055. Epub 2016 Jan 21.

Tranexamic acid in life-threatening military injury and the associated risk of infective complications

C J Lewis  1   2 , P Li  3   4 , L Stewart  3   4 , A C Weintrob  3   4   5 , M L Carson  3   4 , C K Murray  6 , D R Tribble  3 , J D Ross  1
Affiliations
Observational Study

Tranexamic acid in life-threatening military injury and the associated risk of infective complications

C J Lewis et al. Br J Surg. 2016 Mar.

Abstract

Background: Tranexamic acid (TXA) has been shown to reduce mortality from severe haemorrhage. Although recent data suggest that TXA has anti-inflammatory properties, few analyses have investigated the impact of TXA on infectious complications in injured patients. The aim was to examine the association between TXA administration and infection risk among injured military personnel.

Methods: Patients who received TXA were matched by Injury Severity Score with patients who did not receive TXA. Conditional logistic regression was used to examine risk factors associated with infections within 30 days. A Cox proportional analysis evaluated risk factors in a time-to-first-infection model.

Results: A total of 335 TXA recipients were matched with 626 patients who did not receive TXA. A greater proportion of TXA recipients had an infection compared with the comparator group (P < 0·001). Univariable analysis estimated an unadjusted odds ratio (OR) of 2·47 (95 per cent c.i. 1·81 to 3·36) for the association between TXA and infection risk; however, TXA administration was not significant in multivariable analysis (OR 1·27, 0·85 to 1·91). Blast injuries, intensive care unit (ICU) admission, and receipt of 10 units or more of blood within 24 h after injury were independently associated with infection risk. The Cox proportional model confirmed the association with ICU admission and blood transfusion. Traumatic amputations were also significantly associated with a reduced time to first infection.

Conclusion: In life-threatening military injuries matched for injury severity, TXA recipients did not have a higher risk of having infections nor was the time to develop infections shorter than in non-recipients. Extent of blood loss, blast injuries, extremity amputations and ICU stay were associated with infection.

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