Background Sevoflurane is an inhalation anesthetic that has cardioprotective effects. There is limited information regarding its use outside of the operating room and its potential protective effect for patients presenting with myocardial infarction. Methods In the Sevoflurane In Acute Myocardial Infarction trial, patients with a first acute ST-elevation myocardial infarction (STEMI) who were treated by primary percutaneous coronary intervention were randomized to inhalation of sevoflurane or oxygen (control). From the time of the patient's arrival for cardiac catheterization, the anesthesia team administered sevoflurane or oxygen for 30 min using a tight-fitting mask.In this substudy, we report the one-year outcomes. Patients were followed clinically for one year; they underwent a thallium cardiac viability study at six months and an echocardiogram at one year. Results Forty-six patients completed follow-up. One patient in the sevoflurane group died. The mean [standard deviation (SD)] ejection fraction by singlephoton emission computed tomography at six months was 51.7 (7.7)% in the sevoflurane group and 51 (9.1)% in the control group (mean difference, 0.7%; 95% confidence interval [CI], -5.9 to 7.3; P = 0.831). The median [interquartile range] amount of scarring at six months was 0% [0 -8] in the sevoflurane group and 2.5% [0 -7.1] in control group (mean difference, -0.1%; 95% CI, -4.6 to 4.4; P = 0.700). The mean (SD) percentage of hibernating myocardium was similar in both groups 0% [0, 5] (mean difference, -1.3%; 95% CI, -3.4 to 0.9; P = 0.259). The mean (SD) ejection fraction at one year increased compared with baseline by 8.0 (9.1)% (P \ 0.001).Conclusions In this study, we did not find an effect of sevoflurane on left ventricular function or myocardial injury at one year post STEMI. This trial was registered at www.clinicaltrials.gov; identifier: NCT00971607.
RésuméContexte Le sévoflurane est un anesthésique inhalé qui a des effets cardioprotecteurs. On ne dispose que de peu Meeting presentation: Presented in part at the Canadian Cardiovascular Congress in Vancouver, 2014 and published as an abstract (Can J Cardiol 2014, 30 (10): s62.).