A 40-year-old man has a family history of one brother who died of heart disease at the age of 30 and a cousin who had a heart attack at the age of 40. He doesn't know his history on his father's side, and his mother is 75 years old and is healthy other than hypertension. He had a transthoracic echocardiogram that reveals thick, stiff ventricular walls particularly in the interventricular septum. There is reduced relaxation during ventricular filling and diastolic dysfunction. These findings are consistent with:

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Quizplus · Accepted Answer

The echocardiogram findings of thick, stiff ventricular walls, particularly in the interventricular septum, and diastolic dysfunction are characteristic of hypertrophic cardiomyopathy. This condition often has a genetic component, which aligns with the family history of early heart disease.

A 40-Year-Old Man Has a Family History of One Brother