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Aortic valve replacement: determinants of operative mortality
1Cardiothoracic Surgery Associates of North Texas, Medical City Dallas Hospital 75230.
The Annals of Thoracic Surgery
|May 1, 1994
Summary
This study identified key risk factors for operative mortality in aortic valve replacement (AVR), particularly in elderly patients and those undergoing concomitant coronary artery bypass grafting (CABG). Findings aid in optimizing surgical outcomes.
Area of Science:
- Cardiovascular Surgery
- Thoracic Surgery
- Cardiac Surgery
Background:
- Aortic valve replacement (AVR) is a critical procedure with variable reported risk factors for operative mortality.
- Concomitant coronary artery bypass grafting (CABG) and advanced age are frequently encountered in patients undergoing AVR.
Purpose of the Study:
- To investigate the determinants of operative mortality in patients undergoing AVR.
- To specifically analyze the impact of concomitant CABG and advanced age on AVR outcomes.
Main Methods:
- Retrospective analysis of 371 patients undergoing AVR between January 1986 and June 1992.
- Inclusion of preoperative and perioperative variables.
- Application of univariate and stepwise multiple logistic regression analyses to identify risk factors.
Main Results:
- The overall operative mortality rate was 8.9% (33 deaths).
- Advanced age (≥70 years) and concomitant CABG were significant factors associated with operative mortality.
- Numerous preoperative (e.g., congestive heart failure, NYHA class III/IV) and perioperative variables (e.g., emergency operation, aortic cross-clamp time) were examined.
Conclusions:
- Operative mortality in AVR is influenced by a complex interplay of patient-specific factors and surgical variables.
- Concomitant CABG and advanced age represent significant risk factors requiring careful consideration in surgical planning and patient selection for AVR.