Correlates of procedural complications and a simple integer risk score for percutaneous coronary intervention

Mandeep Singh, Ryan J. Lennon, David R. Holmes, Malcolm R. Bell, Charanjit S. Rihal

Research output: Contribution to journalArticlepeer-review

137 Scopus citations


OBJECTIVES: Our goals were to identify clinical and angiographic risk factors associated with major cardiovascular complications of percutaneous coronary intervention (PCI) (in-hospital death, Q-wave myocardial infarction, urgent or emergent coronary artery bypass surgery and stroke) and to construct a simple score for risk stratification. BACKGROUND: Both clinical and angiographic features influence risk of PCIs. METHODS: Percutaneous coronary interventions performed between January 1, 1996, and December 31, 1999, were analyzed. Logistic regression and bootstrap methods were used to create an integer risk score for estimating the risk of procedural complications using baseline, angiographic and procedural characteristics. The risk score was tested in a validation-set consisting of all procedures performed in the year 2000. RESULTS: Among 5,463 procedures, 5 clinical and 3 angiographic variables were significantly correlated with procedural complications: cardiogenic shock, left main coronary artery disease, severe renal disease, urgent or emergent procedure, congestive heart failure class III or higher, thrombus, multivessel disease and older age. In the validation-set, the model fitted the data adequately; the average receiver operating characteristic curve area was 0.782 (standard deviation, 0.018). CONCLUSIONS: Eight variables were combined into a convenient bedside risk scoring system that estimates the risk of complications after PCIs.

Original languageEnglish (US)
Pages (from-to)387-393
Number of pages7
JournalJournal of the American College of Cardiology
Issue number3
StatePublished - Aug 7 2002

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine


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