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ICU readmission after cardiac surgery.
T Bardell1, J F Legare, K J Buth
1Division of Cardiac Surgery, New Halifax Infirmary, Halifax, Nova Scotia, Canada.
Summary
Predictors of intensive care unit (ICU) readmission after coronary artery bypass surgery (CABG) include preoperative renal failure and prolonged mechanical ventilation. Identifying these factors can help optimize high-risk patients and improve outcomes.
Area of Science:
- Cardiology
- Critical Care Medicine
- Health Services Research
Background:
- Intensive care unit (ICU) care is costly and resource-intensive.
- Understanding predictors of ICU readmission after coronary artery bypass surgery (CABG) is crucial for resource allocation and patient management.
Purpose of the Study:
- To identify predictors of ICU readmission in patients undergoing CABG.
- To evaluate the impact of readmission on mortality and length of stay.
Main Methods:
- Retrospective review of 2117 consecutive patients undergoing CABG between January 1999 and August 2001.
- Analysis of readmission reasons through physician progress notes, nurse progress notes, and discharge summaries.
- Multivariate logistic regression analysis to determine independent predictors of readmission.
Main Results:
- The ICU readmission rate was 3.6% (75 patients).
- Readmitted patients had significantly higher mortality (17% vs. 2%) and longer hospital stays (median 23 vs. 6 days).
- Respiratory failure was the most common reason for readmission (47%). Preoperative renal failure and mechanical ventilation >24 hours were independent predictors of readmission.
Conclusions:
- Preoperative renal failure and prolonged mechanical ventilation (>24 hours) are key predictors of ICU readmission post-CABG.
- Identifying and optimizing high-risk patients preemptively may improve outcomes and reduce healthcare costs.