Electrocardiography in hypertrophic cardiomyopathy typically shows which finding?

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Multiple Choice

Electrocardiography in hypertrophic cardiomyopathy typically shows which finding?

Explanation:
Thickened heart muscle in hypertrophic cardiomyopathy produces increased QRS voltage on the ECG, manifesting as left ventricular hypertrophy. The exam pattern you’d expect includes high-voltage QRS complexes, especially in the left-sided leads (tall R waves in V5–V6) with possible deep or wide S waves in V1–V2, and often repolarization abnormalities such as ST-segment depression and T-wave inversion in the same region. You may also see mild Q waves in the inferolateral leads from septal involvement. Short QT, a prolonged PR interval, or a normal ECG are not typical hallmarks of HCM. While some patients can have a non-diagnostic ECG, LVH findings are the most characteristic and commonly tested feature.

Thickened heart muscle in hypertrophic cardiomyopathy produces increased QRS voltage on the ECG, manifesting as left ventricular hypertrophy. The exam pattern you’d expect includes high-voltage QRS complexes, especially in the left-sided leads (tall R waves in V5–V6) with possible deep or wide S waves in V1–V2, and often repolarization abnormalities such as ST-segment depression and T-wave inversion in the same region. You may also see mild Q waves in the inferolateral leads from septal involvement. Short QT, a prolonged PR interval, or a normal ECG are not typical hallmarks of HCM. While some patients can have a non-diagnostic ECG, LVH findings are the most characteristic and commonly tested feature.

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