How do you distinguish double outlet left ventricle (DOLV) from DORV?

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Multiple Choice

How do you distinguish double outlet left ventricle (DOLV) from DORV?

The key idea is which ventricle giving rise to the great arteries, because that defines the two conditions. In double outlet left ventricle, both great arteries originate predominantly from the left ventricle. In double outlet right ventricle, both great arteries originate predominantly from the right ventricle. There can be some variation in exact origins in individual hearts, but the dominant source—LV for DOLV or RV for DORV—drives the classification and the surgical considerations. The other statements aren’t correct: these conditions do involve outflow tract arrangements, and the pulmonary artery does not arise from the left atrium.

The key idea is which ventricle giving rise to the great arteries, because that defines the two conditions. In double outlet left ventricle, both great arteries originate predominantly from the left ventricle. In double outlet right ventricle, both great arteries originate predominantly from the right ventricle. There can be some variation in exact origins in individual hearts, but the dominant source—LV for DOLV or RV for DORV—drives the classification and the surgical considerations. The other statements aren’t correct: these conditions do involve outflow tract arrangements, and the pulmonary artery does not arise from the left atrium.

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