Up the Creek Without a Provider

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The ECG is remarkable for sinus tachycardia and left ventricular hypertrophy. Equal numbers of P and QRS complexes with a consistent PR interval indicate sinus tachycardia. High voltages in the limb leads (R in lead I and S in lead III ≥ 25 mm) or precordial leads (S in lead V₁ and R in lead V₅ or V₆ ≥ 35 mm) constitute left ventricular hypertrophy.