Readmissions in the Year After Percutaneous Coronary Intervention

Prior studies of readmission have evaluated correlates of 30-day readmission but have not evaluated correlates of readmission after 30 days. The study sought to evaluate factors associated with re-hospitalization within one year of undergoing percutaneous coronary intervention (PCI). We analyzed 6265 patients treated at Geisinger hospitals with PCI between January 2010 and December 2015. Correlates of readmission within 1 year were identified. Sub-groups were compared based on reason for readmission (related to versus not related to ischemic heart disease) and timing of readmission (1-30 days versus 31-365 days). Mean age was 64.3 years, 70% were male, and 98.8% were Caucasian. In the first year after PCI, 2,767 patients (44.2%) were re-admitted. Within 30 days 931 patients (14.9%) were readmitted; 1836 (29.3%) were readmitted between 31 and 365 days. Nine hundred fifty (15.2%). In summary, in an unselected patient cohort treated with PCI, approximately 44% of the patients were readmitted within one year. Two-thirds of these were admitted after the first month. Efforts to prevent the need for readmission should continue beyond the first month post-discharge and center on risk factor modification.