Revised cardiac risk index and postoperative morbidity after elective orthopaedic surgery: a prospective cohort study.

Background: The revised cardiac risk index (RCRI) is associated strongly with increased cardiac ischaemic risk and perioperative death. Associations with non-cardiac morbidity in non-cardiac surgery have not been explored. In the elective orthopaedic surgical population, morbidity is common but preoperative predictors are unclear.