The tale of the three sisters

Area of Science:

• Cardiology
• Medical Imaging
• Genetics

Background:

• Hypertrophic cardiomyopathy (HCM) is a genetic heart disease often leading to sudden cardiac death.
• Early diagnosis and monitoring are crucial for managing HCM and preventing adverse outcomes.
• Conventional echocardiography may not always reveal subtle signs of HCM, especially in early stages or in asymptomatic individuals.

Purpose of the Study:

• To evaluate the utility of myocardial deformation imaging (MDI) in detecting subclinical hypertrophic cardiomyopathy (HCM).
• To assess MDI's effectiveness in individuals with a family history of HCM and genetic predisposition.
• To compare MDI findings with conventional two-dimensional echocardiography in this at-risk population.

Main Methods:

• Retrospective analysis of myocardial deformation imaging (MDI) studies.
• Inclusion of three daughters from a family with a history of sudden cardiac death due to HCM.
• Correlation of MDI results with genetic testing and conventional echocardiographic assessments.

Main Results:

• MDI successfully identified myocardial abnormalities consistent with HCM in two daughters.
• These two daughters carried the genetic disorder for HCM.
• Conventional two-dimensional echocardiography did not show clear signs of HCM in these two individuals, highlighting MDI's superior sensitivity.
• The third daughter did not exhibit signs of the disease on MDI or genetic testing.

Conclusions:

• Myocardial deformation imaging (MDI) is a sensitive tool for detecting early or subclinical hypertrophic cardiomyopathy (HCM).
• MDI can identify HCM in genetically predisposed individuals even when conventional echocardiography findings are normal.
• MDI aids in the accurate diagnosis and management of familial hypertrophic cardiomyopathy, improving patient outcomes.