Which structure is directly in front of the LPV when using ICE?

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Multiple Choice

Which structure is directly in front of the LPV when using ICE?

Explanation:
In intracardiac echocardiography views of the left atrium, the left atrial appendage projects anterior to the entry points of the left pulmonary veins. The pulmonary vein ostia are on the posterior wall of the left atrium, so the structure immediately in front of the LPV in this orientation is the left atrial appendage. The left atrial body surrounds the appendage but is not the structure directly in front; the right atrial appendage is on the opposite side of the heart, and the left ventricle lies in a different plane relative to this view.

In intracardiac echocardiography views of the left atrium, the left atrial appendage projects anterior to the entry points of the left pulmonary veins. The pulmonary vein ostia are on the posterior wall of the left atrium, so the structure immediately in front of the LPV in this orientation is the left atrial appendage. The left atrial body surrounds the appendage but is not the structure directly in front; the right atrial appendage is on the opposite side of the heart, and the left ventricle lies in a different plane relative to this view.

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