Echocardiographic abnormalities in familial dysautonomia

Area of Science:

• Cardiology
• Genetics
• Autonomic Nervous System Disorders

Background:

• Sudden death is a significant cause of mortality in familial dysautonomia (FD), accounting for up to 43% of deaths.
• Autonomic dysfunction, hypertension, and blood pressure lability in FD are known risk factors for cardiac remodeling and hypertrophy.
• Cardiac remodeling and hypertrophy are independent risk factors for arrhythmias, cardiovascular events, and sudden death.

Purpose of the Study:

• To investigate the prevalence of cardiac remodeling and hypertrophy in patients with familial dysautonomia.
• To assess the relationship between blood pressure abnormalities and cardiac structural changes in FD.
• To establish recommendations for cardiac screening and management in FD patients.

Main Methods:

• Physical examination and in-clinic blood pressure measurements were performed on 16 FD patients.
• Echocardiographic studies were conducted to evaluate left ventricular geometric patterns.
• Twenty-four-hour ambulatory blood pressure monitoring was utilized to assess blood pressure variability.

Main Results:

• The majority of FD patients exhibited significantly elevated blood pressure during both in-clinic and ambulatory monitoring.
• Echocardiographic abnormalities were detected in 43.75% of the study group.
• Concentric hypertrophy was present in 18.75% of patients, with 2 individuals showing severe hypertrophy.

Conclusions:

• Cardiac remodeling and hypertrophy are common, previously unrecognized findings in familial dysautonomia.
• Routine cardiac echocardiography is recommended for FD patients to detect structural heart changes.
• Earlier initiation of antihypertensive treatment is advised to mitigate cardiovascular risks in FD.