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An anesthetized patient is mechanically ventilated at her normal tidal volume but at twice her normal frequency. When mechanical ventilation is stopped, the patient fails to breathe spontaneously for 1 minute. This temporary cessation of breathing occurs because
The elevated aerial oxygen tension (Pao2) reduced peripheral chemoreceptor activity
The elevated (Pao2) reduced central chemoreceptor activity
Low levels of nitrogen are known to inhibit ventilation
The lowered carbon dioxide tension (Pao2) reduced central chemoreceptor activity
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