Effect of Comorbidity On Unplanned Readmissions After Percutaneous Coronary Intervention (From The Nationwide...

Area of Science:

• Cardiology
• Health Services Research
• Public Health

Background:

• Unplanned readmissions after percutaneous coronary intervention (PCI) pose a significant challenge.
• The influence of comorbidity burden on readmission rates and causes post-PCI remains unclear.

Purpose of the Study:

• To investigate the association between comorbidity burden, defined by the Charlson Comorbidity Index (CCI), and 30-day unplanned readmission rates and causes following PCI.
• To analyze the impact of increasing CCI scores on readmission risk and healthcare costs.

Main Methods:

• Analysis of the Nationwide Readmission Database (NRD) for patients undergoing PCI between 2010 and 2014.
• Stratification of patients into CCI groups (0, 1, 2, ≥3) to assess readmission rates, causes, and associated costs.
• Statistical analysis to determine the odds of readmission based on CCI score.

Main Results:

• A total of 2,294,346 PCI procedures were analyzed.
• 30-day unplanned readmission rates increased with higher CCI scores (6.6% for CCI=0 to 15.9% for CCI≥3).
• Higher CCI scores were independently associated with increased odds of readmission (e.g., CCI≥3 OR 2.08). Non-cardiac readmission causes rose from 49.4% (CCI=0) to 57.1% (CCI≥3).

Conclusions:

• Comorbidity burden is a significant predictor of early unplanned readmissions after PCI.
• Healthcare providers should consider comorbidity assessment for risk stratification and targeted interventions to reduce readmissions.
• Non-cardiac conditions increasingly contribute to readmissions in patients with higher comorbidity.