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Meta-Analysis
. 2024 Mar 19;19(1):10.
doi: 10.1186/s13017-024-00536-9.

Effectiveness and safety of tourniquet utilization for civilian vascular extremity trauma in the pre-hospital settings: a systematic review and meta-analysis

Ying-Chih Ko  1   2   3 , Tou-Yuan Tsai  1   4   5 , Chien-Kai Wu  2   3 , Kai-Wei Lin  3 , Ming-Ju Hsieh #  6 , Tzu-Pin Lu #  7 , Tasuku Matsuyama  8 , Wen-Chu Chiang  3   9 , Matthew Huei-Ming Ma  3   9
Affiliations
Meta-Analysis

Effectiveness and safety of tourniquet utilization for civilian vascular extremity trauma in the pre-hospital settings: a systematic review and meta-analysis

Ying-Chih Ko et al. World J Emerg Surg. .

Abstract

Background: Tourniquets (TQ) have been increasingly adopted in pre-hospital settings recently. This study examined the effectiveness and safety of applying TQ in the pre-hospital settings for civilian patients with traumatic vascular injuries to the extremities.

Materials and methods: We systematically searched the Ovid Embase, PubMed, and Cochrane Central Register of Controlled Trials databases from their inception to June 2023. We compared pre-hospital TQ (PH-TQ) use to no PH-TQ, defined as a TQ applied after hospital arrival or no TQ use at all, for civilian vascular extremity trauma patients. The primary outcome was overall mortality rate, and the secondary outcomes were blood product use and hospital stay. We analyzed TQ-related complications as safety outcomes. We tried to include randomized controlled trials (RCTs) and non-randomized studies (including non-RCTs, interrupted time series, controlled before-and-after studies, cohort studies, and case-control studies), if available. Pooled odds ratios (ORs) were calculated and the certainty of evidence was assessed using Grading of Recommendations Assessment, Development, and Evaluation (GRADE) methodology.

Results: Seven studies involving 4,095 patients were included. In the primary outcome, pre-hospital TQ (PH-TQ) use significantly decrease mortality rate in patients with extremity trauma (odds ratio [OR], 0.48, 95% confidence interval [CI] 0.27-0.86, I2 = 47%). Moreover, the use of PH-TQ showed the decreasing trend of utilization of blood products, such as packed red blood cells (mean difference [MD]: -2.1 [unit], 95% CI: -5.0 to 0.8, I2 = 99%) or fresh frozen plasma (MD: -1.0 [unit], 95% CI: -4.0 to 2.0, I2 = 98%); however, both are not statistically significant. No significant differences were observed in the lengths of hospital and intensive care unit stays. For the safety outcomes, PH-TQ use did not significantly increase risk of amputation (OR: 0.85, 95% CI: 0.43 to 1.68, I2 = 60%) or compartment syndrome (OR: 0.94, 95% CI: 0.37 to 2.35, I2 = 0%). The certainty of the evidence was very low across all outcomes.

Conclusion: The current data suggest that, in the pre-hospital settings, PH-TQ use for civilian patients with vascular traumatic injury of the extremities decreased mortality and tended to decrease blood transfusions. This did not increase the risk of amputation or compartment syndrome significantly.

Keywords: Emergency medical service; Pre-hospital; Tourniquet; Vascular extremity trauma.

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Conflict of interest statement

The authors declare no competing interests.

Figures

Fig. 1
Fig. 1
The flow diagram of the systematic review
Fig. 2
Fig. 2
Results of risk of bias assessment for included studies using the ROBINS-I tool
Fig. 3
Fig. 3
Forest plot of study outcome
See this image and copyright information in PMC

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