Participants
UNCONTROLLED HYPERTENSION
Patients undergoing surgery with general anesthesia were considered for enrollment if the inclusion criteria were met: routine administration of ACEI or ARB, 19 to 65 years old, American Society of Anesthesiologists physical status classification of III or lower, and no involvement in other prospective clinical trials. The exclusion criteria were as follows: emergency and outpatient surgery, a candidate for transfer to an intensive care unit, body mass index ≥ 35, uncontrolled hypertension (usual SBP > 160 mmHg) [