A Visual Guide to ECG Interpretation

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A VISUAL GUIDE TO ECG INTERPRETATION

ECG 9.3B An asymptomatic 9-year-old boy with Friedreich’s ataxia.

Hypertrophic Cardiomyopathy

HCM is associated with a number of syndromes (Friedreich’s ataxia, Noonan syndrome, and Lentiginosis), metabolic disorders (Hunter syndrome, Hurler syndrome, and Fabry disease), and mitochondrial diseases.

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ECG 9.3C Detail for deep, narrow Q waves, R-wave enlargement.