• Nilay Patel, Sadip Pant, Sidakpal S Panaich, Nileshkumar J Patel, Shilpkumar Arora, Umesh Gidwani, Tamam Mohamad, Theodore Schreiber, Apurva O Badheka, and Cindy Grines.
• aDepartment of Internal Medicine, Saint Peter's University Hospital, New Brunswick, New Jersey bDivision of Cardiovascular Medicine, University of Louisville, Louisville, Kentucky cDivision of Cardiovascular Diseases, Detroit Medical Center, Detroit, Michigan dCardiology Division, University of Miami Miller School of Medicine, Miami, Florida eDepartment of Internal Medicine, Mount Sinai St Luke's Roosevelt Hospital fDivision of Cardiology, The Mount Sinai Hospital, New York, New York gInterventional Cardiology, The Everett Clinic, Everett, Washington, USA.
• Coron. Artery Dis. 2015 Dec 1; 26 (8): 657-64.

BackgroundThe purpose of this study was to investigate the contemporary trends in the utilization of multivessel percutaneous coronary interventions (MVPCIs) in the USA.MethodsWe queried the Healthcare Cost and Utilization Project's Nationwide Inpatient Sample between 2006 and 2011 using the International Classification of Diseases, Ninth Revision, Clinical Modification (ICD-9-CM) procedure codes 00.40 (single stent), 00.46, 00.47, and 00.48 (single vessel and multiple stents) and 00.41, 00.42 and 00.43 (MVPCI). We built a hierarchical three-level model adjusted for multiple confounding factors.ResultsA total of 543 434 (weighted: 2 683 206) procedures were identified. Independent predictors of increased MVPCI utilization (odds ratio, 95% confidence interval, P-value) were found to be age (1.05, 1.04-1.07, P<0.001) and comorbid conditions on using Deyo's modification of Charlson's comorbidity index of at least 2 (1.13, 1.09-1.16, P<0.001). Female sex (0.88, 0.87-0.90, P<0.001), myocardial infarction (0.86, 0.83-0.89, P<0.001), weekend admissions (0.94, 0.91-0.96, P<0.001), and urgent admissions (0.88, 0.83-0.93, P<0.001) predicted decreased utilization. Highest quartile of hospital (1.34, 1.16-1.54, P<0.001) predicted higher utilization. Between-hospital variation of 7.7% (interclass correlation coefficient) was observed, which was minimally affected by patient or hospital mix. A randomly selected patient was ∼1.6 (median odds ratio) times more likely to receive an MVPCI from a given hospital compared with another identical patient being treated at a different random hospital.ConclusionThe utilization rate of MVPCI varied considerably among hospitals. Higher annual hospital volume was associated with a higher utilization rate of MVPCI.

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