| 11. | This improves the drainage from the pulmonary veins, and signs and symptoms of pulmonary congestion will decrease.
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| 12. | In the "'left heart "', oxygenated blood is returned to the left atrium via the pulmonary veins.
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| 13. | The principal problem with catheter ablation for AF is the failure to create lasting pulmonary vein isolation.
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| 14. | The left atrium receives oxygenated blood back from the lungs via one of the four pulmonary veins.
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| 15. | The oxygen-rich blood returns to the heart via the pulmonary veins to be pumped back into systemic circulation.
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| 16. | For orientation, the left atrium is identified by the presence of the septum primum and the pulmonary veins.
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| 17. | This increase in volume or pressure backs up to the left atrium and then to the pulmonary veins.
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| 18. | The thoracic operation consists of an extensive paraesophageal devascularization up to the inferior pulmonary vein and esophageal transection.
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| 19. | In the " left heart " oxygenated blood is returned to the left atrium via the pulmonary vein.
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| 20. | Below, it is joined to the upper left pulmonary vein by the ligament of the left vena cava.
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