Cardiothoracic and Vascular Anesthesia
Mortality and Readmission of Patients With Heart Failure, Atrial Fibrillation, or Coronary Artery Disease Undergoing Noncardiac Surgery: An Analysis of 38 047 Patients
van Diepen S, Bakal JA, McAlister FA, et al (Univ of Alberta, Edmonton, Canada) Circulation 124:289-296, 2011§
The postoperative risks for patients with coronary artery disease (CAD) undergoing noncardiac surgery are well described. However, the risks of noncardiac surgery in patients with heart failure (HF) and atrial fibrillation (AF) are less well known. The purpose of this study is to compare the postoperative mortality of patients with HF, AF, or CAD undergoing major and minor noncardiac surgery.
Methods and Results
Population-based data were used to create 4 cohorts of consecutive patients with either nonischemic HF (NIHF; n = 7700), ischemic HF (IHF; n = 12 249), CAD (n = 13 786), or AF (n = 4312) who underwent noncardiac surgery between April 1, 1999, and September 31, 2006, in Alberta, Canada. The main outcome was 30-day postoperative mortality. The unadjusted 30-day postoperative mortality was 9.3% in NIHF, 9.2% in IHF, 2.9% in CAD, and 6.4% in AF (each versus CAD, P < 0.0001). Among patients undergoing minor surgical procedures, the 30-day postoperative mortality was 8.5% in NIHF, 8.1% in IHF, 2.3% in CAD, and 5.7% in AF (P < 0.0001). After multivariable adjustment, postoperative mortality remained higher in NIHF, IHF, and AF patients than in those with CAD (NIHF versus CAD: odds ratio 2.92; 95% confidence interval 2.44 to 3.48; IHF versus CAD: odds ratio 1.98; 95% confidence interval 1.70 to 2.31; AF versus CAD: odds ratio 1.69; 95% confidence interval 1.34 to 2.14).