Abstract
Objective: The aim of this study is to show the effects of 72-hour long trimethazidine (TMZ) administration on myocardial ischemia before open heart surgery.
Material and Methods: This prospective study was carried out between 2009 and 2010 in Eskişehir Osmangazi University Faculty of Medicine, Department of Cardiovascular Surgery. A total of 20 patients, 12 male and 8 females, aged between 43-76 years, who were scheduled for elective coronary artery bypass graft operation were included in the study. The patients were divided into two groups. 3 × 20 mg oral TMZ was given to the first group 72 hours before the preoperative period (study group). Group 2 was the control group. Patients who had myocardial infarction within the last 6 weeks, who underwent additional cardiac surgery to coronary artery bypass surgery, who had previous kidney disease, who had high cardiac enzyme levels 24 hours before surgery, and who were hemodynamically unstable were excluded from the study. Age, body surface area, gender, ejection fraction, comorbidity, cardiopulmonary bypass time, cross-clamp time, patient vessel number and bypass numbers were recorded. Blood samples for the troponin-I (TnI) base value were taken just before the patient was anesthetized. When the cross-clamp was removed during the operation, a second sample was taken from the right atrium. Blood samples for TnI were taken at 6, 12 and 24 hours after the cross-clamp was removed.
Results: When the TnI values were measured just before the patients were anesthesized, immediately after the cross-clamp was removed, and at the 6th, 12th and 24th hours, there was no statistically significant difference between the groups (p=0.7734, p=0.3390, p=0.5624, p=0.1296, p=0.1796, respectively).
Conclusion: It was found that preoperative short-term TMZ treatment had no effect on myocardial protection in open heart surgery.