Which lead is specifically used to assess right ventricular involvement in suspected inferior myocardial infarction?

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Multiple Choice

Which lead is specifically used to assess right ventricular involvement in suspected inferior myocardial infarction?

Explanation:
Right ventricular involvement in an inferior myocardial infarction is best detected with a right-sided chest lead that directly views the RV. The V4R lead is placed on the right side, mirroring V4, and it is most sensitive for picking up ST elevations from the right ventricle. When inferior MI is suspected, a positive V4R finding supports RV infarction, which has important management implications (preload dependence, cautious use of nitrates, potential need for fluids). Leads like V5 look at the lateral wall, II is an inferior view but not specific to the RV, and V1 is anterior/septal. None of these specifically assess the right ventricle the way V4R does, so they’re not as informative for RV involvement in this context.

Right ventricular involvement in an inferior myocardial infarction is best detected with a right-sided chest lead that directly views the RV. The V4R lead is placed on the right side, mirroring V4, and it is most sensitive for picking up ST elevations from the right ventricle. When inferior MI is suspected, a positive V4R finding supports RV infarction, which has important management implications (preload dependence, cautious use of nitrates, potential need for fluids).

Leads like V5 look at the lateral wall, II is an inferior view but not specific to the RV, and V1 is anterior/septal. None of these specifically assess the right ventricle the way V4R does, so they’re not as informative for RV involvement in this context.

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