AACN ACNPC-AG

Practice session

An ACNP is evaluating a 64-year-old man in the ED with substernal chest pressure that began 90 minutes ago. The 12-lead ECG shows 2 mm ST elevation in leads II, III, and aVF with reciprocal ST depression in I and aVL. Vital signs: BP 92/58, HR 48, RR 18, SpO2 96% on room air. Which additional ECG lead set is most important to obtain before administering nitroglycerin?

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