Valvular Heart Disease from Fen-Phen: Management and Treatment Options
Fenfluramine-phentermine (fen-phen) use was linked to valvular heart disease (VHD), particularly mitral and aortic regurgitation, via serotonin 5-HT2B receptor activation on valvular fibroblasts.
Clinical Course
- Some regurgitation may improve or stabilize after drug cessation.
- Progressive or severe VHD requires ongoing management.
Treatment Based on Severity
- Mild/Asymptomatic: Serial echocardiography, clinical follow-up.
- Symptomatic/Moderate-Severe: Guideline-directed medical therapy for heart failure (ACEi/ARB, beta-blockers, diuretics).
- Severe with Symptoms or LV Dysfunction: Valve repair or replacement (surgical or transcatheter).
Monitoring
Regular echocardiograms to assess valve function, chamber sizes, and pulmonary pressures. Individualized decisions based on symptoms, valve anatomy, and comorbidities.
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