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Simplified Parsonnet risk scale identifies limits to early patient discharge
R A Ott1, D E Gutfinger, H Alimadadian
1Cardiovascular Surgery, Memorial Health Care Systems, Anaheim, California, USA.
Journal of Cardiac Surgery
|October 16, 2001
Summary
A simplified Parsonnet risk scale effectively identifies patients for fast-track recovery after coronary artery bypass grafting (CABG). High-risk patients, often female, elderly, or undergoing reoperation, experience prolonged recovery, suggesting a need for tailored strategies.
Area of Science:
- Cardiovascular Surgery
- Surgical Risk Assessment
- Patient Recovery Protocols
Background:
- Fast-track recovery protocols enhance patient care post-coronary artery bypass surgery (CABG).
- Predicting which patients will not achieve fast-track recovery and require prolonged hospitalization remains challenging.
- The standard Parsonnet risk score effectively predicts length of stay but lacks precision in risk stratification.
Purpose of the Study:
- To simplify the Parsonnet risk scale for improved identification of patients suitable for fast-track recovery.
- To analyze factors influencing fast-track outcomes in patients undergoing isolated CABG.
Main Methods:
- Retrospective review of 604 patients undergoing isolated CABG with cardiopulmonary bypass (CPB).
- Application of a rapid recovery protocol focusing on reduced CPB time, IABP criteria, and AF prophylaxis.
- Reduction of the Parsonnet scale into three risk categories: Low (0-10), Intermediate (11-20), and High (>20).
Main Results:
- Simplified scale identified female gender, reoperative CABG, and advanced age as risk progression factors.
- Low and intermediate-risk groups (82%) showed favorable fast-track outcomes with shorter lengths of stay.
- High-risk group (18%) experienced prolonged recovery (9.2 days vs. 6.1 days) and higher rates of pneumonia and atrial fibrillation.
- Increased risk correlated with fewer coronary artery bypass grafts performed.
Conclusions:
- A three-category simplified Parsonnet scale effectively identifies patients likely to benefit from fast-track recovery.
- Low- and intermediate-risk patients predominantly respond well to fast-track protocols.
- High-risk patients, characterized by specific demographics and surgical history, face limitations in fast-track recovery, necessitating alternative strategies like off-pump techniques.