Clinical Value of Combined Multidetector CT and Dobutamine Stress Echocardiography as a Pre Operative Risk Stratification Before Non-Cardiac Surgery

  • Dr Tadaaki Ohno, Nippon Medical School, Japan
  • Dr Hiroshi Honma, Nippon Medical School, Japan
  • Dr Hiroyuki Fujimoto, Nippon Medical School, Japan
  • Tsyako Matszaki, Nippon Medical School, Japan
  • Dr Haruka Higashi, Nippon Medical School, Japan
  • Dr Kyoichi Mizuno, Nippon Medical School, Japan

    • Recently multidetector CT(MDCT) are often performed before non-cardiac surgery in an attempt to identify unsuspected coronary artery disease, which might result in significant cardiac morbidity and mortality. MDCT has a recognised high negative predictive value. MDCT indicate sufficient diagnostic accuracy, but significance of coronary artery stenosis are not related to ischemic event.MDCT and Dobutamine stressechocardiography(DSE) are performed in a 34 patients who were candidates for non-cardiac surgery. We compare the significance of coronary artery stenosis, which were detected by MDCT, and severity of ischemia, which showed DSE. There were 21 patients(30 region) who had >75% stenosis detected by MDCT, and 22 patients(29 region) were revealed ischemia by DSE. Eight patients(14 region) were received PCI, and 3 patients were CABG. Cardiovascular event didn’t occurre during perioperative period. It is not necessarily mean that >75% stenosis by MDCT indicate high perioperative event rate. DSE also respected in such case of PCI.