title: Ad hoc percutaneous coronary interventions in patients with stable coronary artery disease--a study of prevalence, safety, and variation in use from the American College of Cardiology National Cardiovascular Data Registry (ACC-NCDR).
abstract: OBJECTIVE
  To utilize the American College of Cardiology National Cardiovascular Data Registry (ACC-NCDR) to monitor the performance and safety of ad hoc PCIs.
  
  
  BACKGROUND
  The performance of ad hoc PCI remains controversial. Patients' preference, cost, and vascular access issues favor an ad hoc strategy. Adequate time for thoughtful decision-making, scheduling complexity, informed consent, and physician reimbursement favor PCI on a subsequent day.
  
  
  METHODS
  We analyzed results in 68,528 patients with stable angina entered in the ACC-NCDR from 2001-2003. Ad hoc PCI was evaluated in many clinical and nonclinical subgroups. A multivariable analysis was performed to determine whether ad hoc PCI had an independent relationship with complications or procedure success.
  
  
  RESULTS
  Overall, 60.6% of patients underwent ad hoc PCI. There was no difference in ad hoc PCI mortality, renal failure, or vascular complications from staged PCI. A lower percentage of patients at high vs. low risk and with vs. without renal failure underwent ad hoc PCIs (58.6% vs.63.0% and 50.7% vs. 60.9% respectively). There was wide variation in the performance of ad hoc PCIs according to payer (70.2-60.3%), hospital PCI volume (67-50.2%), hospital owner (89.7-59.6%), and geographic area (75.5-47.4%). Ad hoc PCI per se was not independently related to PCI success or complications.
  
  
  CONCLUSIONS
  PCI success was related to patient/lesion related factors and not to the performance of ad hoc PCIs per se. Although ad hoc PCI can be performed in more patients than at present, this strategy will never be possible in all patients at all times.
authors.affiliation: Division of Cardiology, Washington University School of Medicine, St. Louis, Missouri 63110, USA. rkrone@wustl.edu
authors.forename: Ronald J
authors.initials: RJ
authors.lastname: Krone
authors.forename: Richard E
authors.initials: RE
authors.lastname: Shaw
authors.forename: Lloyd W
authors.initials: LW
authors.lastname: Klein
authors.forename: James C
authors.initials: JC
authors.lastname: Blankenship
authors.forename: William S
authors.initials: WS
authors.lastname: Weintraub
mesh_terms: D000368:Aged; D000787:Angina Pectoris / Q000628:therapy; D015906:Angioplasty, Balloon, Coronary / Q000009:adverse effects* / Q000706:statistics & numerical data*; D006328:Cardiac Catheterization / Q000009:adverse effects / Q000706:statistics & numerical data; D003324:Coronary Artery Disease / Q000628:therapy*; D016208:Databases, Factual; D005260:Female; D006333:Heart Failure / Q000628:therapy; D006801:Humans; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D016017:Odds Ratio; D011183:Postoperative Complications / Q000209:etiology; D011237:Predictive Value of Tests; D015995:Prevalence; D012042:Registries; D012189:Retrospective Studies; D012307:Risk Factors; D012955:Societies, Medical; D013647:Task Performance and Analysis; D016896:Treatment Outcome; D014481:United States