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Comorbid conditions and outcomes after percutaneous coronary intervention Singh M; Rihal CS; Roger VL; Lennon RJ; Spertus J; Jahangir A; Holmes DR JrHeart 2008[Nov]; 94 (11): 1424-8OBJECTIVE: To evaluate whether adding comorbid conditions to a risk model can help predict in-hospital outcome and long-term mortality after percutaneous coronary intervention (PCI). DESIGN: Retrospective chart review SETTING: Academic medical centre. PATIENTS: 7659 patients who had 9032 PCIs. INTERVENTIONS: PCI performed at Mayo Clinic between 1 January 1999 and 30 June 2004. MAIN OUTCOME MEASURES: The Mayo Clinic Risk Score (MCRS) and the coronary artery disease (CAD)-specific index for determination of comorbid conditions in all patients. RESULTS: The mean (SD) MCRS score was 6.5 (2.9). The CAD-specific index was 0 or 1 in 46%, 2 or 3 in 30% and 4 or higher in 24%. The rate of in-hospital major adverse cardiovascular events (MACE) increased with higher MCRS and CAD-specific index (Cochran-Armitage test, p<0.001 for both models). The c-statistic for the MCRS for in-hospital MACE was 0.78; adding the CAD-specific index did not improve its discriminatory ability for in-hospital MACE (c-statistic = 0.78; likelihood ratio test, p = 0.29). A total of 707 deaths after dismissal occurred after 7253 successful procedures. The c-statistic for all-cause mortality was 0.69 for the MCRS model alone and 0.75 for the MCRS and CAD-specific indices together (likelihood ratio test, p<0.001), indicating significant improvement in the discriminatory ability. CONCLUSIONS: Addition of comorbid conditions to the MCRS adds significant prognostic information for post-dismissal mortality but adds little prognostic information about in-hospital complications after PCI. Such health-status measures should be included in future risk stratification models that predict long-term mortality after PCI.|Aged[MESH]|Angioplasty, Balloon, Coronary/*mortality[MESH]|Comorbidity[MESH]|Coronary Artery Disease/*mortality/therapy[MESH]|Diabetic Retinopathy/*mortality[MESH]|Female[MESH]|Hospital Mortality[MESH]|Humans[MESH]|Male[MESH]|Outcome and Process Assessment, Health Care[MESH]|Renal Insufficiency/*mortality[MESH]|Retrospective Studies[MESH]|Risk Assessment[MESH]|Stroke/*mortality[MESH]|Survival Analysis[MESH]|Treatment Outcome[MESH] |
