Cardiac IV Notes CPB Circuit

These flashcards summarize key vocabulary and concepts related to the CPB circuit and its implications in cardiac surgery.

Venous cannulas

Devices used to remove deoxygenated blood from the heart, available in 1, 2, or multi-stage options.

Prime

The process of filling the CPB circuit with fluid, usually saline or another solution, before initiation.

Oxygenator

A device that oxygenates venous blood and removes carbon dioxide during CPB.

Centrifugal pump

A type of blood pump used during CPB that is independent of afterload and suitable for long-term use.

Heat exchanger

A component in the CPB circuit that passively cools and actively rewarm the blood.

Coagulation

A process activated by CPB that includes extrinsic and intrinsic hemostatic pathways leading to potential coagulopathies.

ACT (Activated Clotting Time)

A test to monitor coagulation, necessary for ensuring safe anticoagulation levels during CPB.

Embolic events

Complications such as stroke, TIA, or memory deficits that can arise post-CPB due to dislodged clots.

“Hot shot”

A terminal warm reperfusion cardioplegia solution administered as the aortic cross clamp is removed.

Protamine administration

The process of administering protamine to neutralize heparin after bypass, necessary to reverse anticoagulation.