medium · NCLEX-RN physiological
The RN assesses Morgan, who has a pulmonary artery (PA) catheter. The S_vO_2 (mixed venous oxygen saturation) has dropped from 70% to 52% over the last hour. The client's HR is 118 and BP is 90/60.
What is the most likely pathophysiologic explanation?
- Oxygen delivery is failing to meet increased tissue oxygen demand
- Cardiac output has suddenly increased, causing rapid transit.
- The client is experiencing a shift toward alkalosis
- The PA catheter balloon has remained inflated spontaneously.
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