Advanced
Technical
IVT
gaseous microemboli
Microscopic air bubbles that can form in the bypass circuit and potentially cause neurologic complications.
Full Definition
Tiny air bubbles generated during cardiopulmonary bypass from cavitation, oxygenator function, or surgical manipulation that can travel to cerebral or coronary circulation. These emboli, typically less than 40 microns, are largely filtered by pulmonary capillaries in normal circulation but bypass this natural filter during extracorporeal circulation. Modern oxygenators and arterial line filters significantly reduce but may not eliminate these emboli, making meticulous technique essential for neuroprotection.
Usage
Usage note: Always plural; distinguish from macroscopic air embolism.
In Context
- "The arterial line filter removed gaseous microemboli during the procedure." — Perfusion safety report
- "Ultrasonic detection revealed minimal gaseous microemboli with the new oxygenator design." — Equipment evaluation
Also known as
microbubbles
air microemboli
Don't confuse with
particulate emboli
fat emboli