VetSkill Level 3 Diploma VN06 – Anaesthesia And Theatre Nursing Skills Practice Test

Which intervention can correct hypercapnia?

Increase FGF rate Increase inspired oxygen fraction Decrease ventilation Administer diuretics

Correct Answer:

Increase FGF rate

Explanation:

Hypercapnia means too much CO2 in the blood because the patient isn’t removing CO2 from the breathing circuit efficiently. In many anesthesia setups, especially circle systems, some CO2 can be rebreathed if the fresh gas flow isn’t high enough. Increasing the fresh gas flow rate helps flush CO2 out of the circuit more quickly, reducing the amount of CO2 the patient re-inhales and thereby lowering the arterial CO2. This directly addresses the problem of CO2 accumulation in the circuit. Raising the inspired oxygen fraction doesn’t remove CO2; it just increases oxygen levels. Decreasing ventilation would worsen CO2 retention, and diuretics won’t affect CO2 elimination. So, increasing fresh gas flow rate is the most effective way among these options to correct hypercapnia.

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