The nurse is working with a client who is beginning weaning from a mechanical ventilator. The nurse explains to the family that which lab result would indicate a need to alter the wean settings?
1. pH is 7.30.
2. PCO2 is 30.
3. O2 is 75.
4. HCO3 is 25.
Answer: 2
1. A pH of 7.30 indicates acidosis. The nurse determines whether the reason for the acidosis is metabolic or respiratory. If respiratory, weaning would not be recommended.
2. The client with a carbon dioxide of 30 would have the rate weaned down, because 30 is low.
3. The oxygen of 75 might be acceptable but not enough to wean.
4. Weaning is not determined on the bicarbonate content.
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