Cardioprotective Effect of Dexmedetomidine in Patients With ST-segment Elevation Myocardial Infarction

The patient began to inject DEX intravenously as soon as he enrolled. This study started with the maximum maintenance dose allowed by the label (0.7μg/kg/h). With reference to previous studies, we set 3 pump injection gradients within the range of 0.2-0.7μg/kg/h (0.2μg/kg/h, 0.45μg/kg/h, 0.7μg/kg/h), and based on the patient's heart rate , systolic blood pressure and RASS sedation score to adjust.

The patient began intravenous injection of normal saline immediately after enrollment. The administration method and dosage adjustment of normal saline are the same as DEX.