A man with normal lungs and an arterial PCO2 of 40 mm Hg takes an overdose of barbiturate that halves his alveolar ventilation but does not change his CO2 output. If his respiratory exchange ratio is 0.8. what will be his arterial PCO2(in mm Hg), approximately?
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Answer:
less than 46 mm of hg
explanation: in the alveoli P( co2) is from 40 mm of hg
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