A patient has mixed venous oxygen saturation (SVO2) of 52% with the following hemodynamic findings: CO of 4.8 L/min, SaO2 of 95%, and an unchanged hemoglobin level. The nurse should assess the patient for:
1. Excessive sedation
2. Position of the PA catheter
3. Hypothermia
4. Pain
4
Rationale 1: Excessive sedation contributes to a higher than normal SVO2 level due to a lower level of oxygen extracted by the tissues.
Rationale 2: This would not influence the patient's blood levels of oxygen and carbon dioxide.
Rationale 3: Hypothermia contributes to a higher than normal SVO2 level due to a lower level of oxygen extracted by the tissues.
Rationale 4: Pain causes an increased consumption of oxygen; therefore, the SVO2 level will decrease.
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