title: Clinical experience of coenzyme Q10 to enhance intraoperative myocardial protection in coronary artery revascularization.
abstract: Seventy-eight patients undergoing coronary artery bypass grafting (CABG) were compared retrospectively to evaluate whether pretreatment with coenzyme Q10 (CoQ) is effective in preventing left ventricular depression in early reperfusion following CABG. CoQ (5 mg/kg, intravenously) was given to 60 patients, 2 hours prior to the onset of cardiopulmonary bypass (CPB). CABG was performed using saphenous vein under CPB associated with cold cardioplegia in the standard fashion. Heart rate, mean arterial pressure, and cardiac index showed no significant difference between the CoQ and control groups. However, left ventricular stroke work index was significantly elevated at 6 and 10 hours of reperfusion following CABG in the CoQ-treated group compared with the controls. Serum MB-CK was lower at 0 and 6 hours of reperfusion in the CoQ group compared with the controls. These results suggest that pretreatment with intravenous CoQ is effective in preventing left ventricular depression in early reperfusion and in minimizing myocardial cellular injury during CABG followed by reperfusion.
authors.affiliation: Department of Thoracic-Cardiovascular Surgery, Tokyo Medical and Dental University, School of Medicine, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Sunamori
authors.forename: H
authors.initials: H
authors.lastname: Tanaka
authors.forename: T
authors.initials: T
authors.lastname: Maruyama
authors.forename: I
authors.initials: I
authors.lastname: Sultan
authors.forename: T
authors.initials: T
authors.lastname: Sakamoto
authors.forename: A
authors.initials: A
authors.lastname: Suzuki
mesh_terms: D003067:Coenzymes; D001026:Coronary Artery Bypass / Q000009:adverse effects*; D006439:Hemodynamics / Q000187:drug effects; D006801:Humans; D007262:Infusions, Intravenous; D007430:Intraoperative Care; D008875:Middle Aged; D015428:Myocardial Reperfusion Injury / Q000201:enzymology / Q000209:etiology / Q000517:prevention & control*; D012189:Retrospective Studies; D014451:Ubiquinone / Q000627:therapeutic use* / Q000031:analogs & derivatives
chemical_list: D003067:Coenzymes; D014451:Ubiquinone; C024989:coenzyme Q10