arterioventricular
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Pulmonary-to-systemic shunt — A pulmonary to systemic shunt is a cardiac shunt which allows, or is designed to cause, blood to flow from the pulmonary circulation to the systemic circulation. This occurs when: #there is a passage between two or more of the great vessels; and … Wikipedia
heart — A hollow muscular organ that receives the blood from the veins and propels it into the arteries. In mammals it is divided by a musculomembranous septum into two halves right or venous and left or arterial each of which consists of a receiving… … Medical dictionary