• Shuai Feng, Shuyi Yang, Wei Xiao, Xue Wang, Kun Yang, and Tianlong Wang.
• Department of Anesthesiology, Xuanwu Hospital, Capital Medical University, Beijing, China.
• BMC Anesthesiol. 2018 Aug 17; 18 (1): 113.

BackgroundPast studies have demonstrated that goal-directed fluid therapy (GDFT) may be more marginal than previously believed. However, beneficial effects of alpha-1 adrenergic agonists combined with appropriate fluid administration is getting more and more attention. This study aimed to systematically review the effects of goal-directed fluid therapy (GDFT) combined with the application of alpha-1 adrenergic agonists on postoperative outcomes following noncardiac surgery.MethodsThis meta-analysis included randomized controlled trials (RCTs) on GDFT combined with the application of alpha-1 adrenergic agonists in patients undergoing noncardiac surgery. The primary outcomes included the postoperative mortality rate and length of hospital stay (LOS). The secondary outcome indexes were the incidence of postoperative complications and recovery of postoperative gastrointestinal (GI) function. The traditional pairwise meta-analysis was conducted to compare the effect of fluid therapy. The quality of included RCTs was evaluated according to the Cochrane Collaboration's risk-of-bias tool. Also, the publication bias was detected using funnel plots, Egger's regression test, and Begg's adjusted rank correlation test. The meta-analysis was conducted using the RevMan 5.3 and Stata 14.0 software.ResultsThirty-two eligible RCTs were included in this meta-analysis. Perioperative GDFT combined with the application of alpha-1 adrenergic agonists was associated with a significant reduction in LOS (P = 0.002; I2 = 69%), and overall complication rates (P = 0.04; I2 = 41%). It facilitated gastrointestinal function recovery, as demonstrated by shortening the time to first flatus by 6.30 h (P < 0.00001; I2 = 91%) and the time to toleration of solid food by 1.69 days (P < 0.00001; I2 = 0%). Additionally, there was no significant reduction in short-term mortality in the GDFT combined with alpha-1 adrenergic agonists group (P = 0.05; I2 = 0%).ConclusionThis systematic review of available evidence suggested that the use of perioperative GDFT combined with alpha-1 adrenergic agonists might facilitate recovery in patients undergoing noncardiac surgery.

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