Previous percutaneous coronary intervention increases morbidity after coronary artery bypass grafting

Surgery. 2012 Jul;152(1):5-11. doi: 10.1016/j.surg.2012.02.013. Epub 2012 Apr 11.


Background: We hypothesized that the incidence of previous percutaneous coronary intervention (PCI) is increasing and that prior PCI influences patient morbidity and mortality after coronary artery bypass grafting (CABG).

Methods: A total of 34,316 patients underwent isolated CABG operations at 16 different statewide, institutions from 2001 to 2008. Patients were stratified into prior PCI (n = 4346; 12.7%) and no prior PCI (n = 29,970). Patient risk factors, intraoperative variables, and outcomes were compared by univariate and multivariate analyses.

Results: The incidence of prior PCI in CABG has risen from <1% to 22.0% from 2001 to 2008 (P < .001). Prior PCI patients were younger (P < .001) and more commonly had previous myocardial infarction (P < .001), but less commonly had heart failure (P < .001). The operative mortality was similar between groups (2.3% vs 1.9%; P = .13). Prior PCI patients had more major complications (15.0% vs 12.0%; P < .001), longer hospitalization (P = .01), and higher readmission rates (P = .01). Importantly, by multivariate analyses, prior PCI was not associated with mortality, but was an independent predictor of major complications after CABG (odds ratio, 1.15; P = .01).

Conclusion: The incidence of prior PCI in patients undergoing CABG is increasing. Previous PCI is associated with a higher risk of major complications, greater hospital length of stay, and higher readmission rates after CABG.

Publication types

  • Comparative Study
  • Multicenter Study
  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Aged
  • Angioplasty, Balloon, Coronary*
  • Coronary Artery Bypass*
  • Coronary Artery Disease / epidemiology
  • Coronary Artery Disease / mortality*
  • Coronary Artery Disease / therapy*
  • Female
  • Humans
  • Length of Stay
  • Male
  • Middle Aged
  • Morbidity
  • Patient Readmission
  • Postoperative Complications / epidemiology
  • Retrospective Studies
  • Risk Factors
  • Survival Rate
  • Treatment Outcome