title: High-flow nasal cannula oxygen therapy vs conventional oxygen therapy in cardiac surgical patients: A meta-analysis.
abstract: The use of high-flow nasal cannula (HFNC) for the treatment of many diseases has gained increasing popularity. In the present meta-analysis, we aimed to assess the efficacy and safety of HFNCs compared with conventional oxygen therapy (COT) in adult postextubation cardiac surgical patients.
  
  
  
  We reviewed the Embase, PubMed, Cochrane Central Register of Controlled Trials, Wanfang databases, and the China National Knowledge Infrastructure. Two investigators independently collected the data and assessed the quality of each study. RevMan 5.3 was used for the present meta-analysis.
  
  
  
  We included 495 adult postextubation cardiac surgical patients. There was no significant heterogeneity among the studies. Compared with COT, HFNCs were associated with a significant reduction in the escalation of respiratory support (risk ratio, 0.61; 95% confidence interval [CI], 0.46-0.82; z = 3.32, P < .001). There were no significant differences in the reintubation rate (risk ratio, 0.96; 95% CI, 0.04-24.84; z = 0.02, P = .98) or length of intensive care unit stay (weighted mean difference, 0.13; 95% CI, -0.88 to 7.92; z = 1.57, P = .12) between the 2 groups. No severe complications were reported in either group.
  
  
  
  The HFNC could reduce the need for escalation of respiratory support compared with COT, and it could be safely administered in adult postextubation cardiac surgical patients.
authors.affiliation: Department of Intensive Care Unit, Guangzhou Red Cross Hospital, Medical College, Jinan University, Guangzhou, Guangdong 510220, China. Electronic address: 151276953@qq.com.
authors.forename: Youfeng
authors.initials: Y
authors.lastname: Zhu
authors.affiliation: Department of Intensive Care Unit, Guangzhou Red Cross Hospital, Medical College, Jinan University, Guangzhou, Guangdong 510220, China. Electronic address: 951770781@qq.com.
authors.forename: Haiyan
authors.initials: H
authors.lastname: Yin
authors.affiliation: Department of Intensive Care Unit, Guangzhou Red Cross Hospital, Medical College, Jinan University, Guangzhou, Guangdong 510220, China. Electronic address: 63281796@qq.com.
authors.forename: Rui
authors.initials: R
authors.lastname: Zhang
authors.affiliation: Department of Cardiology, Guangzhou Red Cross Hospital, Medical College, Jinan University, Guangzhou, Guangdong 510220, China. Electronic address: Jianruiw@163.com.
authors.forename: Jianrui
authors.initials: J
authors.lastname: Wei
mesh_terms: D000072601:Cannula; D006348:Cardiac Surgical Procedures; D002681:China; D003422:Critical Care; D016208:Databases, Factual; D006801:Humans; D007362:Intensive Care Units; D007442:Intubation, Intratracheal / Q000295:instrumentation / Q000379:methods; D007902:Length of Stay; D010100:Oxygen; D010102:Oxygen Inhalation Therapy / Q000295:instrumentation*; D015300:Ventilator Weaning
chemical_list: D010100:Oxygen
keywords: Cardiac surgery; High-flow nasal cannula; Oxygen therapy; Respiratory support