Right inferior pulmonary vein

Vena pulmonalis dextra inferior

CardiovascularBlood vesselsThoraxRight side

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What it is
The inferior right pulmonary vein leaves the lower part of the right lung hilum and runs a short course to open into the posterior wall of the left atrium.
Function
Returns oxygenated blood from the lungs to the left side of the heart.
Size
~1–1.5 cm diameter; 1–2 cm long outside the lung.
Clinical note
Sleeves of atrial muscle extending into the pulmonary veins trigger most atrial fibrillation, the target of catheter "pulmonary vein isolation".