Five-Year Outcomes of Aortic Valve Replacement in Aortic Stenosis vs. Aortic Regurgitation
Author Information
Author(s): Vinod H. Thourani, John D. Puskas, Bartley Griffith, Lars G. Svensson, Philippe Pibarot, Michael A. Borger, David Heimansohn, Thomas Beaver, Eugene H. Blackstone, Anna Liza M. Antonio, Joseph E. Bavaria
Primary Institution: Piedmont Heart Institute
Hypothesis
To compare outcomes of aortic valve replacement (AVR) in patients with pure aortic stenosis and those with pure aortic regurgitation or mixed aortic valve disease.
Conclusion
Patients with pure aortic regurgitation and mixed aortic valve disease showed similar clinical safety and freedom from structural valve deterioration at five years compared to those with pure aortic stenosis.
Supporting Evidence
- Patients with Pure AR + MAVD had a greater reduction in left ventricular mass compared to those with Pure AS.
- Five-year survival rates were similar between the Pure AR + MAVD and Pure AS groups.
- No structural valve deterioration was reported in either group during the first five postoperative years.
- Patients with preserved left ventricular ejection fraction at baseline continued to show better outcomes.
Takeaway
This study looked at patients who had heart valve surgery and found that those with a certain type of heart problem did just as well as those with a different type after five years.
Methodology
The study included 689 patients who underwent AVR, with 135 in the Pure AR + MAVD group and 323 in the Pure AS group, using Kaplan-Meier survival curves and mixed-effects models for analysis.
Potential Biases
Potential selection bias due to the observational nature of the study design.
Limitations
The study is a post hoc analysis and was not designed or powered for this comparison, and the cohort had a relatively low number of patients with pure aortic regurgitation.
Participant Demographics
Patients included were predominantly older adults, with a mean age of 68 years, and included both males and females.
Statistical Information
P-Value
.03
Confidence Interval
0.3-2.1
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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