Comparison of in-hospital and one-year outcomes in patients with left ventricular ejection fractions <or=40%, 41% to 49%, and >or=50% having percutaneous coronary revascularization.
Outcome studies of percutaneous coronary intervention (PCI) with conventional balloon angioplasty have established increased in-hospital and 1-year mortality in patients with left ventricular (LV) dysfunction compared with others. It is unclear whether recent PCI practice innovations, including stents and adjunctive pharmacotherapy, have made PCI safer and more effective in patients with LV dysfunction. We evaluated the influence of LV ejection fraction (EF) indexes on in-hospital and 1-year outcomes in 1,458 patients within the National Heart, Lung, and Blood Institute-sponsored Dynamic Registry. Patients (n = 300) with acute myocardial infarction were excluded. The remaining 1,158 patients were subdivided into 3 categories: group 1, EF <or=40% (n = 166); group 2, EF 41% to 49% (n = 126); and group 3, EF >or=50% (n = 866). We determined the frequency of individual and composite adverse events (death/myocardial infarction [MI]/coronary artery bypass grafting) at discharge and 1 year. In the Dynamic Registry patients, mean EF in the 3 groups was 32%, 45%, and 62% and in-hospital mortality was 3.0%, 1.6%, and 0.1%, respectively (p <0.001). The composite end point of death/MI was also significant, but other in-hospital adverse events did not differ between groups. The respective mortality rates were 11.0%, 4.5%, and 1.9% (p <0.001) after 1 year. The composite end points of death/MI and death/MI/coronary artery bypass grafting also occurred more frequently in group 1 patients. Thus, significant LV dysfunction was still associated with increased in-hospital and 1-year mortality in patients having contemporary PCI.
Mayo Clinic and Foundation, Rochester, Minnesota 55905, USA.
Paul C
PC
Keelan
Janet M
JM
Johnston
Tulay
T
Koru-Sengul
Katherine M
KM
Detre
David O
DO
Williams
James
J
Slater
Peter C
PC
Block
David R
DR
Holmes
D000368:Aged; D015906:Angioplasty, Balloon, Coronary / Q000401:mortality*; D016001:Confidence Intervals; D017023:Coronary Angiography; D003327:Coronary Disease / Q000401:mortality / Q000628:therapy; D023381:Endpoint Determination; D005260:Female; D005500:Follow-Up Studies; D017052:Hospital Mortality; D006801:Humans; D008297:Male; D012042:Registries; D012044:Regression Analysis; D013318:Stroke Volume / Q000502:physiology; D016019:Survival Analysis; D015996:Survival Rate; D013997:Time Factors; D016896:Treatment Outcome; D018487:Ventricular Dysfunction, Left / Q000401:mortality* / Q000503:physiopathology