Heart-Lung Machine
Cardiopulmonary Bypass Machine · CPB Machine · Pump Oxygenator · Bypass Pump · Perfusion Pump
A large wheeled console with a row of roller or centrifugal pump heads, a mast for holding the circuit parts, and control screens. A sterile circuit of plastic tubing, an oxygenator with a reservoirREZ-er-vwarA place where germs live and multiply, such as a person, animal, water or soil.Full entry and heat exchanger, and filters is mounted on it for each case.
On the table
What it does, the lengths it comes in and what experienced techs know about it.
What it’s for
Takes over the work of the heart and lungs during cardiac surgery so the heart can be stopped and the lungs deflated. Venous blood drains from the right atriumAY-tree-umOne of the two upper chambers of the heart, which receive blood coming back to the heart.atri/o atrium-um noun endingFull entry or vena cavaVEE-nuh KAY-vuhOne of the two large veins that return oxygen-poor blood from the body to the right atrium of the heart.Full entry to the oxygenator, which adds oxygen, removes carbon dioxideKAR-bun dy-OK-sideA gas made by the body's cells as waste, carried in the blood to the lungs and breathed out.Full entry and warms or cools the blood; a pump returns it to the arterial system, usually through the ascending aorta. Extra pumps run the cardiotomy suckers and vents that return shed blood to the reservoirREZ-er-vwarA place where germs live and multiply, such as a person, animal, water or soil.Full entry , and one delivers cardioplegia. A board-certified perfusionist runs it.
Lengths and variants
Main pumps are roller or centrifugal. Oxygenators are membrane or older bubble types.
What experienced techs know
What techs who reach for it every day know about it.Pro
Through the case
In the order you meet it: before, during and after the case.
- Before the case
Inspection and testing
What to check before it reaches the field.Pro
- During the case
Caution
What not to do with it, and why.Pro
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3 sources
- Rothrock JC. Alexander's Care of the Patient in Surgery. 17th ed. Chapter 25 (Cardiac Surgery), p. 948
- Frey KB (AST). Surgical Technology for the Surgical Technologist. 4th ed. Chapter 22 (Cardiothoracic Surgery), p. 1041
- American Society of ExtraCorporeal Technology (AmSECT). Standards and Guidelines for Perfusion Practice. 2023. Standard 2 and Standard 5, p. 6, 9
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