Research Article

Cardiac predictors of death after non-cardiac surgery evaluated by intention to treat.

BMJ 1988; 297 doi: (Published 22 October 1988) Cite this as: BMJ 1988;297:1011
  1. A. Dirksen,
  2. E. Kjøller
  1. Department of Internal Medicine, Central Hospital, Hillerød, Denmark.


    Cardiac risk factors were studied among patients who were admitted to hospital with appendicitis or a fracture of the proximal femur less than one year after being admitted with myocardial infarction. Of 99 patients with myocardial infarction and appendicitis, 87 underwent appendicectomy; and of 221 with myocardial infarction and hip fracture, 179 were operated on. The patients were studied on an intention to treat basis. The mortality within one month was 9% and 16% respectively. A history of congestive heart failure was the dominating risk factor, while ischaemic heart disease (recent myocardial infarction or angina pectoris) had no independent association with mortality. If the ventricular function is known additional preoperative information about the heart is of negligible value when estimating the mortality of non-cardiac surgery.