CABG
During the study period, 121,319 males (82.3%) and 26,157 females (17.7%) underwent an elective or urgent isolated CABG (see table 1). Females tended to be older with more comorbidities such as diabetes, COPD and hypertension. Females were more likely than males to have an urgent rather than elective CABG and females scored more highly in NYHA and CCS scoring systems. Females had shorter cross clamp times and cardio-pulmonary bypass (CPB) times (see table 2). Male were more likely to receive internal mammary artery grafts including left internal mammary artery (LIMA), right internal mammary artery (RIMA) or bilateral internal mammary arteries (BIMA) than females, however, a higher proportion of females received total arterial grafts than males.
Table 1: Baseline characteristics of patients undergoing CABG, females compared to males