The M-mode echocardiogram in Fabry's disease

Area of Science:

• Cardiology
• Genetics
• Medical Imaging

Background:

• Fabry disease is a genetic disorder caused by deficient alpha-galactosidase A enzyme activity.
• Glycosphingolipid accumulation in cardiac tissues leads to various abnormalities.
• Noninvasive cardiac evaluation methods are crucial for managing Fabry disease.

Purpose of the Study:

• To assess the utility of echocardiography in detecting cardiac abnormalities in Fabry disease patients.
• To correlate echocardiographic findings with disease severity and patient age.
• To investigate cardiac manifestations in both hemizygous and heterozygous Fabry disease patients.

Main Methods:

• Echocardiographic examination of 32 patients (25 hemizygous, 7 heterozygous) with Fabry disease.
• Measurement of aortic root diameter and left ventricular posterior wall thickness.
• Analysis of left ventricular shortening fraction and mitral valve abnormalities.

Main Results:

• Older hemizygous patients (>26 years) showed significantly dilated aortic roots (38.8 mm) compared to younger patients (33.2 mm).
• Increased left ventricular wall thickness was observed more frequently in older hemizygotes (8/12) than younger ones (2/9).
• Cardiac abnormalities were more prevalent in older hemizygous individuals, mirroring disease progression patterns.

Conclusions:

• Echocardiography is a valuable noninvasive tool for identifying cardiac involvement in Fabry disease.
• Progressive cardiac abnormalities, including aortic root dilation and left ventricular hypertrophy, are associated with aging in hemizygous patients.
• Further research into the specific mechanisms of cardiac dysfunction in Fabry disease is warranted.