How can the RT monitor for clots in the oxygenator?
a. Draw blood and monitor the PT, PTT, and INR.
b. Monitor pre- and postoxygenator pres-sures.
c. Observe the tubing for any clots.
d. Use pulse oximetry and capnometry.
ANS: B
Monitor pre- and postoxygenator pressures frequently. Changes will alert clinicians to clots in the oxygenator. Increases in premembrane pressure only = increased resistance within the oxygen-ator. Increases in pre- AND postmembrane pressures = increased resistance AFTER the oxygen-ator.
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