Statistics of OPCAB in Japan

Abstract

This chapter focuses on the status and outcome of coronary artery surgery performed in Japan between January 1 and December 31, 2012. A total of 14,999 patients underwent coronary artery bypass grafting (CABG), 10,658 (71 %) of which received isolated CABG. During this period, the operative mortality rate for patients who underwent isolated CABG was 1.49 %, while the mortality for initial elective CABG was 0.72 %. These are the best results obtained since this survey was initially established in 1996. The number of off-pump CABG (OPCAB) cases has since remarkably increased on an annual basis. This less invasive procedure was performed on 5,865 patients in 2012, which is 65.0 % of the total number of initial elective CABG cases (8,983). The mortality rate of complete OPCAB patients was 0.45 %, which is approximately one-fifth of that in the previous year (2011), indicating quality improvement. More than half (58.9 %) of patients with 4 or more grafting underwent OPCAB, which was a higher rate than 56.9 % in 2011. Vein grafts were utilized in 42 %, which had gradually increased over the previous 8 years. The complicated rate of cerebral-vascular stroke in complete OPCAB was significantly lower than those in on-pump beating CABG and conversion cases from off- to on-pump CABG. This less invasive procedure demonstrated a reduction in adverse cerebral-vascular events.