Retrograde perfusion
Retrograde Perfusion
Retrograde perfusion (pronunciation: reh-troh-grade per-fyoo-zhun) is a medical procedure that involves the delivery of blood or other perfusate in the direction opposite to the normal flow. This technique is often used in cardiac surgery, particularly during aortic arch surgery, to provide cerebral protection during the period of circulatory arrest.
Etymology
The term "retrograde" comes from the Latin word "retrogradus", which means "going backward". "Perfusion" is derived from the Latin word "perfusio", meaning "to pour over or through".
Procedure
In Retrograde Perfusion, blood is delivered in the opposite direction to the normal flow. This is typically achieved by cannulating the venous system, such as the superior vena cava in the case of cerebral perfusion, and delivering the perfusate under pressure. The perfusate then flows backward through the venous system and into the capillary bed, where it can provide oxygen and nutrients to the tissues.
Applications
Retrograde Perfusion is most commonly used in cardiac surgery, particularly during procedures that involve the aortic arch. It is used to provide cerebral protection during periods of circulatory arrest, which are necessary to allow the surgeon to operate on the aorta. Retrograde perfusion can also be used in other types of surgery where it is necessary to temporarily stop blood flow to a particular organ or region of the body.
Related Terms
- Perfusion - The passage of fluid through the circulatory system or lymphatic system to an organ or a tissue.
- Antegrade Perfusion - A type of perfusion where the blood flow is in the same direction as the normal flow.
- Circulatory Arrest - A medical condition where the heart stops pumping blood.
- Aortic Arch - The part of the aorta that bends between the ascending and descending aorta.
See Also
External links
- Medical encyclopedia article on Retrograde perfusion
- Wikipedia's article - Retrograde perfusion
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