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Predictors of postoperative ventricular dysrhythmias: a multivariate study.
V A Ferraris1, S P Ferraris, H S Gilliam
1Department of Surgery, Letterman Army Medical Center, Presidio of San Francisco, California.
The Journal of Cardiovascular Surgery
|January 1, 1991
Summary
Postoperative ventricular dysrhythmias occurred in 23% of patients after coronary bypass grafting. Advanced age, not using an internal mammary artery graft, and atrial dysrhythmias were identified as key risk factors.
Area of Science:
- Cardiology
- Cardiac Surgery
Background:
- Postoperative ventricular dysrhythmias are a concern following coronary bypass grafting (CABG).
- Identifying risk factors may allow for targeted prophylactic therapy.
Purpose of the Study:
- To determine the incidence of postoperative ventricular dysrhythmias after CABG.
- To identify patient-specific risk factors for these dysrhythmias.
Main Methods:
- Prospective study of 109 patients undergoing CABG.
- Univariate statistical analysis of 15 patient variables.
Main Results:
- 23% of patients developed significant ventricular dysrhythmias.
- Sustained ventricular tachycardia primarily occurred within 36 hours post-operation.
- Advanced age, lack of internal mammary artery use, and concurrent atrial dysrhythmias were associated with increased ventricular dysrhythmia risk.
Conclusions:
- Advanced age, non-use of internal mammary artery grafts, and postoperative atrial dysrhythmias are significant risk factors for ventricular dysrhythmias after CABG.
- These findings may help identify patients who could benefit from prophylactic treatment.