A systematic review and meta-analysis of the clinical efficacy of the intravenous injection of dexmedetomidine in ICU patients with hyperactive brain syndrome.

BACKGROUND: The incidence of hyperactive brain syndrome in patients in the intensive care unit (ICU) is very high. Compared with other sedative drugs, existing research shows that dexmedetomidine can significantly reduce the incidence of hyperactive brain syndrome. This study systematically analyzed the clinical efficacy of a dexmedetomidine intravenous injection in ICU patients with hyperactive brain syndrome. METHODS: The databases PubMed, Web of Science, Embase, and the Cochrane Library were searched from January 2000 to December 2020 to identify papers that studied the clinical efficacy of dexmedetomidine intravenous injection in ICU patients with hyperactive brain syndrome. The basic information and evaluation indexes in the literature were screened and extracted. Revman5.3 software was used for quality assessment and meta-analysis of the included studies, and forest maps were drawn. RESULTS: A total of 255 patients were included in 5 studies. The results of the meta-analysis showed that intravenous infusion of dexmedetomidine could reduce the incidence of restless delirium in patients [odds ratio (OR) =0.14; 95% confidence interval (CI): 0.07 to 0.29; (Z test) Z=5.39, P<0.00001], total delirium after medication duration [mean difference (MD) =-15.50; 95% CI: -25.70 to -5.29; Z=2.98; P=0.003], and ICU hospitalization time (MD =-1.93; 95% CI: -3.57 to -0.29; Z=2.31; P=0.02). However, there was no significant difference in the incidence of adverse reactions (bradycardia and hypotension) in patients who were given an intravenous infusion of dexmedetomidine (OR =2.85; 95% CI: 0.21 to 38.74; Z=0.79; P=0.43). DISCUSSION: The incidence of restlessness delirium, the duration of total delirium after medication, and the length of ICU stay in patients treated with a dexmedetomidine intravenous injection were significantly lower than those in patients treated with haloperidol, indicating that a dexmedetomidine intravenous injection had clinical efficacy in ICU patients with hyperactive brain syndrome.

Systematic review and meta-analysis of the sedative effects and safety of dexmedetomidine in patients after cardiac surgery.

BACKGROUND: In order to increase the sample size and improve the test efficiency from a statistical perspective, we conducted a combined analysis of multiple results from similar studies. In this study, we conducted a meta-analysis to investigate the sedative effect of dexmedetomidine on patients after cardiac surgery, so as to provide theoretical basis and help for clinical treatment of cardiac diseases. METHODS: The Boolean logic search method was employed to search online databases for publications, with "dexmedetomidine", "cardiac surgery", "competitive antagonist", and "analgesic sedation" used as keywords. In addition, the literature was screened for comparative studies on the use of midazolam and propofol as controls. The Newcastle-Ottawa Scale (NOS) of Cochrane Collaborative Network was used to evaluate the pathological control studies in Meta-analysis, and the star rating system (out of 9 stars) was used to measure the results from the subjects, cases and groups. Finally, a meta-analysis was performed with Review Manager software (Cochrane). RESULTS: Thirteen references containing mostly low-risk biases (medium-high quality) were included in this study. The meta-analysis showed no statistically obvious heterogeneity in the mechanical ventilation time (MVT) between patients in the control group (group A) or patients in the experimental group (group B) (Chi2=74.71; I2=92%; P<0.00001), showing no statistical significance (Z=1.57; P=0.12). Heterogeneity was found as a complication in both groups (Chi2=14.82; I2=60%; P=0.02), but fewer complications were observed in group B (Z=2.06, P=0.04). The sedative effect displayed by patients from the 2 groups during the induction of anesthesia was statistically heterogeneous (Chi2=6.45; I2=38%; P=0.17), but the sedative effect in group B was shown to be greater (Z=3.31, P=0.0009). CONCLUSIONS: Dexmedetomidine can significantly reduce the mechanical ventilation time and the incidence of complications in patients after cardiac surgery, and has a high safety and good sedative effect on patients.