Table A2.

- Possible causes of oxygenator failure.

Cause	Cause	Solution
a) Clots in oxygenator	•Low extracorporeal membrane oxygenation blood flow •Inadequate anticoagulation •High pre-oxygenator pressure	↑ ECMO flow ↑ Anticoagulation
b) Decreased patient O2% saturation	Check pre- and post-oxygenator blood gases	Change oxygenator
c) ↓ pO2	Check pre- and post-oxygenator blood gases	↑ FiO2
d) ↓ pCO2	Check pre- and post-oxygenator blood gases	↑ Sweep