Q: What is "wedged blood PO2," and what is it's clinical implication?
Answer: "Wedged blood PO2" is the level of PO2 while the Pulmonary artery catheter balloon is being inflated (wedging).
Wedge blood Po2 should be at least 20 mm Hg higher than arterial PO2 (ABG) to confirm that you are measuring Pulmonary artery occlusion pressure at the right level/spot.
#hemodynamics
#procedures
Further reading:
1. Morris AH, Chapman RH. Wedge pressure confirmation by aspiration of pulmonary capillary blood. Crit Care Med. 1985 Sep;13(9):756-9. doi: 10.1097/00003246-198509000-00014. PMID: 3928259.
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