title: Health-related quality of life after percutaneous coronary intervention versus coronary bypass surgery in high-risk patients with medically refractory ischemia.
abstract: OBJECTIVE
  We compared six-month health-related quality of life (HRQL) for high-risk patients with medically refractory ischemia randomized to percutaneous coronary intervention (PCI) versus coronary artery bypass graft (CABG) surgery.
  
  
  BACKGROUND
  Mortality rates after PCI and CABG surgery are similar. Therefore, differences in HRQL outcomes may help in the selection of a revascularization procedure.
  
  
  METHODS
  Patients were enrolled in a Veterans Affairs multicenter randomized trial comparing PCI versus CABG for patients with medically refractory ischemia and one or more risk factors for adverse outcome; 389 of 423 patients (92%) alive six months after randomization completed an Short Form-36 (SF-36) health status survey. Primary outcomes were the Physical Component Summary (PCS) and Mental Component Summary (MCS) scores from the SF-36. Multivariable analyses were used to evaluate whether PCI or CABG surgery was associated with better PCS or MCS scores after adjusting for over 20 baseline variables.
  
  
  RESULTS
  There were no significant differences in either PCS scores (38.7 vs. 37.3 for PCI and CABG, respectively; p = 0.23) or MCS scores (45.5 vs. 46.1, p = 0.58) between the treatment arms. In multivariable models, there remained no difference in HRQL for post-PCI versus post-CABG patients (for PCS, absolute difference = 0.56 +/- standard error of 1.14, p = 0.63; for MCS, absolute difference = -1.23 +/- 1.12, p = 0.27). We had 97% power to detect a four-point difference in scores, where four to seven points is a clinically important difference.
  
  
  CONCLUSIONS
  High-risk patients with medically refractory ischemia randomized to PCI versus CABG surgery have equivalent six-month HRQL. Therefore, HRQL concerns should not drive decision-making regarding selection of a revascularization procedure for these patients.
authors.affiliation: Cardiology and Health Services Research, Denver Veterans Affairs Medical Center, 1055 Clermont Street, Denver, CO 80220, USA. john.rumsfeld@med.va.gov
authors.forename: John S
authors.initials: JS
authors.lastname: Rumsfeld
authors.forename: David J
authors.initials: DJ
authors.lastname: Magid
authors.forename: Mary E
authors.initials: ME
authors.lastname: Plomondon
authors.forename: Jerome
authors.initials: J
authors.lastname: Sacks
authors.forename: William
authors.initials: W
authors.lastname: Henderson
authors.forename: Mark
authors.initials: M
authors.lastname: Hlatky
authors.forename: Gulshan
authors.initials: G
authors.lastname: Sethi
authors.forename: Douglass A
authors.initials: DA
authors.lastname: Morrison
mesh_terms: D000368:Aged; D015906:Angioplasty, Balloon, Coronary; D001026:Coronary Artery Bypass; D005260:Female; D006304:Health Status; D006801:Humans; D008297:Male; D008603:Mental Health; D008875:Middle Aged; D015999:Multivariate Analysis; D017202:Myocardial Ischemia / Q000628:therapy*; D011788:Quality of Life; D012307:Risk Factors; D011795:Surveys and Questionnaires; D016896:Treatment Outcome