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Impact of Triglycerides and Remnant Particles on Hemodynamic Valve Deterioration After Transcatheter Aortic Valve
Revathy Sampath-Kumar1, Erika Padilla1, Michael Wilkinson1
1University of California-San Diego, Division of Cardiovascular Medicine, La Jolla, California, USA.
Insights
Elevated triglycerides and remnant cholesterol are linked to increased hemodynamic valve deterioration (HVD) after transcatheter aortic valve replacement (TAVR). Managing these cardiometabolic factors may improve TAVR valve longevity.
Area of Science:
- Cardiology
- Biomedical Engineering
- Clinical Research
Background:
- Hemodynamic valve deterioration (HVD) is a concern after transcatheter aortic valve replacement (TAVR).
- The influence of cardiometabolic factors, including atherogenic lipids, on HVD post-TAVR remains understudied.
Purpose of the Study:
- To investigate the association between cardiometabolic factors and HVD in patients who have undergone TAVR.
- To identify specific lipid profiles or metabolic markers that correlate with adverse valve outcomes.
Main Methods:
- Retrospective analysis of 555 patients undergoing TAVR from May 2013 to December 2022.
- Echocardiographic follow-up was used to assess moderate or severe HVD, with all-cause death as a competing risk.
- Statistical analysis included hazard ratios and cumulative incidence to evaluate associations with cardiometabolic factors.
Main Results:
- Elevated triglycerides (>100 mg/dL) were significantly associated with a higher cumulative incidence of HVD (HR: 3.81).
- Increased remnant cholesterol levels also correlated with a higher incidence of HVD (HR: 1.03).
- Elevated triglycerides were linked to a faster annualized rate of change in peak aortic jet velocity, indicating accelerated valve dysfunction.
Conclusions:
- Elevated triglycerides and remnant cholesterol are independent risk factors for HVD following TAVR.
- These findings suggest that optimizing cardiometabolic risk factors, particularly lipid management, could be a viable strategy to enhance the longevity of TAVR prostheses.
- Further research is warranted to confirm these associations and explore therapeutic interventions.
Background:
The impact of cardiometabolic factors, such as atherogenic lipids, on hemodynamic valve deterioration (HVD) after transcatheter aortic valve replacement (TAVR) has not been studied.
Objectives:
The objective of the study was to investigate the association between cardiometabolic factors and HVD in patients following TAVR.
Methods:
The UC San Diego Health internal Society of Thoracic Surgeons/American College of Cardiology Transcatheter Valve Therapy registry was used to identify patients who underwent TAVR from May 2013 to December 2022 with echocardiographic follow-up. The primary outcome was moderate or severe HVD, defined by Valve Academic Research Consortium 3 guidelines, with all-cause death treated as a competing risk.
Results:
A total of 555 patients (median age 81 years, 38.7% female, 32.3% diabetes, median lipoprotein(a) 17 mg/dL, 52.8% with low-density lipoprotein >70 mg/dL) were included. Most patients were on statins (74.8%), whereas few were on other cardiometabolic therapies. HVD occurred in 6.3% of patients at a median of 3.7 years. The cumulative incidence of HVD was higher in patients with elevated triglycerides (>100 mg/dL) (HR: 3.81; 95% CI: 1.75-8.29; P < 0.001) and remnant cholesterol (HR: 1.03; 95% CI: 1.02-1.04; P < 0.001). Elevated triglycerides were associated with a higher annualized rate of change in peak aortic jet velocity (0.01 m/s/y, IQR: -0.07-0.18, vs -0.02 m/s/y, IQR: -0.13-0.09; P = 0.027). HVD was not associated with other cardiometabolic factors.
Conclusions:
Elevated triglycerides and remnant cholesterol were associated with a higher cumulative incidence of HVD, and elevated triglycerides were associated with a higher annualized rate of change in peak aortic jet velocity. Optimizing cardiometabolic risk factors may be a strategy for improving TAVR valve longevity that warrants future study.
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