Survival after cardiac surgery in CHD patients.

This panel presents figures for all surgical procedures (A, B, C) and elective procedures only (D, E, F). These include Kaplan-Meier survival curves after cardiac surgery (A, D), mortality calculated for each month following surgery (B, E) and mortality six months after surgery (C, F). Expected mortality was calculated for age and gender-matched UK population. Mortality within the first six months after surgery is 33–42% higher than the mortality at 30 days from surgery or within the same hospital stay (i.e. the follow-up period that STS or EuroScore account for). The absolute excess mortality, above the one predicted by scores, is highest in patients in whom the risk predicted by mortality scores is high.