Abstract
BACKGROUND: Sufentanil-induced cough (SIC) is a common but irritating phenomenon during general anesthesia (GA) induction; studies have reported that high doses of dezocine can effectively prevent it. The aim is to explore the efficacy and safety of low-dose dezocine in preventing SIC during GA induction in coronary artery bypass grafting (CABG) surgery. METHODS: 81 elective CABG surgery patients were randomly and equally divided into 2 dezocine groups of different doses and 1 control group. Before GA induction, the patients received "pre-injection" solution: 0.1 mg/kg dezocine in the high-dose (HD) group, 0.05 mg/kg dezocine in the low-dose (LD) group or an equal volume of saline in the control (C) group. The primary outcome was the incidence of SIC within 1 minute after sufentanil administration. The secondary outcomes included the severity of SIC, the adverse reactions within 1 minute after injection of the "pre-injection" solution, and the vital signs at various time points. RESULTS: One patient had moderate SIC in the HD group (3.7%), 3 patients (11.1%) had SIC (1 mild and 2 severe) in the LD group, and 8 patients (29.6%) had SIC (3 mild, 1 moderate, and 4 severe) in the C group. The difference between the HD and the C groups was statistically significant (P = .01). In contrast, in comparing the LD and the C groups, the LD and the HD groups had no statistically significant difference (P > .017). CONCLUSION: The current study suggested that pretreatment of 0.05 mg/kg dezocine neither prevented SIC occurrence nor attenuated SIC severity during GA induction in CABG surgery, but 0.1 mg/kg dezocine did.