Study design and patient selection
allergy
ALLERGY
This is a randomized, double-blind, placebo-controlled trial. In order to be eligible to participate, potential participants needed to be aged 18 to 70 years old, be scheduled for an elective surgery under general anesthesia, and be rated as having American Society of Anesthesiologists (ASA) physical status I or II.Exclusion criteria included being unable to understand Thai language or provide a written informed consent, having a history of allergy to pregabalin or diazepam, having a history of using pregabalin or diazepam on a regular basis, being pregnant or breast feeding, having renal function impairment (CrCl < 60 mL/min/1.73 m