Objectives: The aim of this study was to investigate the effects of pregabalin on the agitation and pain after coronary artery bypass graft surgery. Design of the study: randomized double blind clinical trial. Inclusion criteria: Patients who undergo coronary artery bypass graft surgery. exclusion criteria: EF < 35%, Cr > 1.5, BMI > 35, chronic alcohol consumers, drug addicts, epileptic patients, patients with insulin dependent diabetes mellitus ', recent use of gabapentin, uncontrolled blood pressure, liver failure, the sensitivity of the Pregabalin, return to the operating room during the study period, the patient's re-intubation during the first 3 days after the surgery, mortality during the first 3 days.
Sample Size: 94 patients found eligible based on the inclusion criteria. Patients were randomly divided into two groups of intervention group and placebo group.
Patients in the intervention group received 150 mg pregabalin, 2 hours before surgery and 75 mg pregabalin at the first, second and third days after surgery in the hours of 9 am and 9 pm and patients in the placebo group received one capsule placebo at the same time. The written forms of VAS and RASS were completed at 11 am and 11 pm. On the other hand, the amount of other analgesic drugs was considered in the study in addition to the pregabalin for controlling pain and agitation in the intensive care unit.