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Severe Aortic Stenosis in Dialysis Patients
Yuichi Kawase1, Tomohiko Taniguchi2, Takeshi Morimoto3
1Department of Cardiology, Kurashiki Central Hospital, Kurashiki, Japan.
Journal of the American Heart Association
|July 16, 2017
Summary
Severe aortic stenosis in hemodialysis patients has higher mortality. Initial aortic valve replacement (AVR) reduces long-term death and sudden death risk compared to conservative care, though with a smaller benefit than in non-hemodialysis patients.
Area of Science:
- Cardiology
- Nephrology
- Clinical Research
Background:
- Severe aortic stenosis (AS) characteristics and prognosis in hemodialysis patients remain poorly defined.
- Hemodialysis patients represent a high-risk group for cardiovascular complications.
- Understanding outcomes is crucial for guiding treatment strategies in this population.
Purpose of the Study:
- To define the characteristics and prognosis of hemodialysis patients with severe aortic stenosis.
- To compare the outcomes of initial aortic valve replacement (AVR) versus conservative management in this cohort.
- To assess the impact of AVR on long-term mortality and sudden death.
Main Methods:
- Analysis of the CURRENT AS registry, a Japanese multicenter registry of 3815 patients with severe AS.
- Comparison of 405 hemodialysis patients with 3410 nonhemodialysis patients.
- Evaluation of outcomes based on initial AVR versus conservative management, with a median follow-up of 1361 days.
Main Results:
- Hemodialysis patients had significantly higher 5-year all-cause mortality than nonhemodialysis patients (71% vs. 40%).
- Among hemodialysis patients, initial AVR was associated with lower 5-year all-cause death (60.6% vs. 75.5%) and sudden death (10.2% vs. 31.7%) compared to conservative care.
- Aortic valve procedure-related deaths were markedly higher in hemodialysis patients post-AVR (21.2% vs. 2.3%).
Conclusions:
- Initial AVR strategy in hemodialysis patients with severe AS significantly lowers long-term mortality, especially sudden death.
- The survival benefit of initial AVR in hemodialysis patients is less pronounced than in nonhemodialysis patients.
- Despite increased procedural risk, initial AVR offers a survival advantage for hemodialysis patients with severe aortic stenosis.
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