Traumatic brain injury (TBI) can result in left ventricular dysfunction, which can lead to hypotension and secondary brain injuries. However, the association between left ventricular systolic dysfunction (LVSD) and in-hospital mortality in patients with moderate-to-severe isolated TBI is controversial. Therefore, we conducted a systematic review and meta-analysis to identify the prevalence of LVSD and evaluate whether LVSD following moderate-to-severe isolated TBI increases the in-hospital mortality. We searched PubMed, EMBASE, and the Cochrane Library database from January 1, 2010, through June 30, 2020. Meta-analysis was performed to determine the incidence of LVSD and related mortality in patients with moderate-to-severe isolated TBI. A systematic review identified 5 articles appropriate for meta-analysis. The total number of patients pooled was 256. LVSD was reported in 4 studies, of which the estimated incidence of patients with LVSD was 18.7% (95% confidence interval, 11.9-26.6). Five studies reported on in-hospital mortality, and the estimated in-hospital mortality was 14.1% (95% confidence interval, 5.3-25.6). Finally, 3 studies were eligible for analyzing the association of LVSD and in-hospital mortality. On meta-analysis, in-hospital mortality was significantly higher in patients with LVSD (risk ratio, 6.57; 95% confidence interval, 3.71-11.65; P < 0.001). In conclusion, LVSD after moderate-to-severe TBI is common and may be associated with worse in-hospital outcomes.
- cardiac systolic dysfunction
- isolated traumatic brain injury
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