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Hypertrophic cardiomyopathy screening is an assessment and testing to detect hypertrophic cardiomyopathy (HCM). [ 1 ] [ 2 ] It is a way of identifying HCM in immediate relatives of family members diagnosed with HCM, and athletes as part of a sports medical . [ 3 ]
Hypertrophic cardiomyopathy (HCM, or HOCM when obstructive) is a condition in which muscle tissues of the heart become thickened without an obvious cause. [8] The parts of the heart most commonly affected are the interventricular septum and the ventricles . [ 10 ]
Subsequent studies have also found additional mutations in MYH6 linked to both hypertrophic cardiomyopathy and dilated cardiomyopathy. [17] Mutations in MYH6 cause atrial septal defect. [18] One underlying mutation is a missense substitution at Ile820Asn, which alters the association of alpha-myosin heavy chain with regulatory light chain.
Hypertrophic cardiomyopathy affects about 1 in 500 people while dilated cardiomyopathy affects 1 in 2,500. [ 3 ] [ 10 ] They resulted in 354,000 deaths up from 294,000 in 1990. [ 7 ] [ 11 ] Arrhythmogenic right ventricular dysplasia is more common in young people.
A quarter of unselected patients with TTS who presented to an emergency department were found to have obstructive hypertrophic cardiomyopathy (HCM) on blinded echocardiographic analysis. [34] These patients had septal thickening, systolic anterior motion (SAM) of the mitral valve, left ventricular outflow tract (LVOT) obstruction with mean peak ...
The heart becomes enlarged, or hypertrophic, due to intense cardiovascular workouts, creating an increase in stroke volume, an enlarged left ventricle (and right ventricle), and a decrease in resting heart rate along with irregular rhythms. The wall of the left ventricle increases in size by about 15–20% of its normal capacity.
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