Impacts of Low-Dose Dexmedetomidine on Sleep Quality in Mechanically Ventilated ICU Patients

Dexmedetomidine is administered as a continuous intravenous infusion at a rate of 0.1-0.2 ug/kg/h (0.025-0.05 ml/kg/h) from study recruitment in the ICU during mechanical ventilation, for no more than 72 hours.

Placebo (normal saline) is administered as a continuous intravenous infusion at a rate of 0.025-0.05 ml/kg/h from study recruitment in the ICU during mechanical ventilation, for no more than 72 hours.