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BMC Anesthesiology
Published in: BMC Anesthesiology 1/2018

Open Access 01-12-2018 | Research article

Dexmedetomidine prevents acute kidney injury after adult cardiac surgery: a meta-analysis of randomized controlled trials

Authors: Yang Liu, Bo Sheng, Suozhu Wang, Feiping Lu, Jie Zhen, Wei Chen

Published in: BMC Anesthesiology | Issue 1/2018

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Abstract

Background

Dexmedetomidine has been shown to confer direct renoprotection by stabilizing the sympathetic system, exerting anti-inflammatory effects and attenuating ischemia/reperfusion (I/R) injury in preclinical studies. Results from clinical trials of dexmedetomidine on acute kidney injury (AKI) following adult cardiac surgery are controversial.

Methods

We searched EMBASE, PubMed, and Cochrane CENTRAL databases for randomized controlled trials (RCTs) comparing the renal effect of dexmedetomidine versus placebo or other anesthetic drugs in adult patients undergoing cardiac surgery. The primary outcome was the incidence of AKI. The secondary outcomes were mechanical ventilation (MV) duration, intensive care unit (ICU) stay and hospital length of stay(LOS), and postoperative mortality (in-hospital or within 30 days).

Results

Ten trials with a total of 1575 study patients were selected. Compared with controls, dexmedetomidine significantly reduced the incidence of postoperative AKI [68/788 vs 97/787; odds ratio(OR), 0.65; 95% confidence interval (CI), 0.45–0.92; P = 0.02; I2 = 0.0%], and there was no difference between groups in postoperative mortality (4/487 vs 11/483; OR, 0.43; 95% CI, 0.14–1.28; P = 0.13; I2 = 0.0%), MV duration [in days; n = 1229; weighted mean difference(WMD), −0.22; 95% CI, −2.04 to 1.70; P = 0.81], ICU stay (in days; n = 1363; WMD, −0.85; 95% CI, −2.14 to 0.45; P = 0.20), and hospital LOS (in days; n = 878; WMD, −0.24; 95% CI, −0.71 to 0.23; P = 0.32).

Conclusions

Perioperative administration of dexmedetomidine in adult patients undergoing cardiac surgery may reduce the incidence of postoperative AKI. Future trials are needed to determine the dose and timing of dexmedetomidine in improving outcomes, especially in patients with decreased baseline kidney function.
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Metadata
Title
Dexmedetomidine prevents acute kidney injury after adult cardiac surgery: a meta-analysis of randomized controlled trials
Authors
Yang Liu
Bo Sheng
Suozhu Wang
Feiping Lu
Jie Zhen
Wei Chen
Publication date
01-12-2018
Publisher
BioMed Central
Published in
BMC Anesthesiology / Issue 1/2018
Electronic ISSN: 1471-2253
DOI
https://doi.org/10.1186/s12871-018-0472-1

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