Objective  To observe the incidence rate of cardiovascular adverse events and evaluate the safety of dexmedetomidine or midazolan sedation in patients with long-term mechanical ventilation in intensive care unit (ICU). Methods  From January 2014 to December 2015, patients admitted to ICU aged ≥18 years with mechanical ventilation time ≥48 hours were randomly divided into dexmetomidine group (group D) and midazolam group (group M). Adverse events such as cardiovascular events during sedation were observed. Results  There were 144 cases in group D and 143 cases in group M. Slow heart rate was the prominent manifestation in group D. The incidence of heart rate <50 beats per minute in group D (4.86%) was less than that in group M (6.29%), but there was no statistical difference ( P=0.681). Group D had lower blood pressure (40.28% vs. 72.73%), tachycardia (18.75% vs. 41.96%), arrhythmia (16.67% vs. 34.97%) and 28- day mortality (22.22% vs. 42.66%) than those in group M (P<0.01). No cardiac arrest, sinus arrest, hypertension, hyperglycemia, or hypoglycemia were found in the two groups. Conclusion  The long-term sedation of dexmetidine in patients with mechanical ventilation is safe; in cardiovascular adverse events, the 28-day mortality is lower than that of traditional midazolam sedation, and the duration of mechanical ventilation is no longer than that of traditional midazolam sedation, with slightly longer ICU length of stay.

Citation： YANG Mingquan, LIU Yang, ZHOU Jie. Observation of cardiovascular adverse events of different sedatives in patients with mechanical ventilation in intensive care unit. West China Medical Journal, 2018, 33(8): 994-998. doi: 10.7507/1002-0179.201606168 Copy