Yo, T.I.

patient group perioperative surgery bisoprolol infarction percent dobutamine echocardiography result echocardiography event dobutamine risk factors study bisoprolol group heart heart rate copyright 1999 massachusetts cause ischemia standard-care nonfatal factor incidence standard-care group death perioperative period end point difference center noncardiac surgery dobutamine stress echocardiography testing committee wall-motion safety committee artery disease point beta-blocker heart failure stress vas c ul erasmu period range atenolol wall-motion index wall-motion abnormalities randomized patients outcome failure care unit society perioperative incidence evaluation treatment disease effect randomization polderman table randomized procedure beta-blockade medisch massachusett ziekenhui noncardiac postoperatively www.nejm.org universiteit perioperative beta-blockade exercise capacity <0.001 san giovanni rotondo analysis december perioperative care characteristic physician