(Solved) A patient was admitted to the hospital with chronic obstructive pulmonary disease. His PO2 was 65 ...

A patient was admitted to the hospital with chronic obstructive pulmonary disease. His PO2 was 65 and PCO2 was 65. A new resident orders pure oxygen via the venturi mask. One hour later, after the oxygen was placed, the nurse finds the patient with no respiration or pulse. She calls for a Code Blue and begins cardiopulmonary resuscitation (CPR). Why did the patient stop breathing?

A)The sudden increase in oxygen in his body caused oxygen toxicity, generating huge amounts of free radicals, resulting in profound CNS disturbances, coma, and death.
B)Oxygen dilates pulmonary arterioles, increasing perfusion and worsening an already poor ventilation-perfusion mismatch. In addition, oxygen drives more CO2 off of hemoglobin, dumping it into alveoli from which it cannot be removed.
C)The increase in oxygen in his body caused hypoventilation to the extent that breathing was no longer visible to the nurse.
D)His arterial PCO2 chemoreceptors had become unresponsive. Declining PO2 levels now act as the stimulus. Increased PO2 levels will prevent this stimulus, and breathing will cease.
E)The high level of oxygen in his body caused hypocapnia, which resulted in an unbalancing of his body's pH, causing his muscular and nervous systems to fail.

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A patient was admitted to the hospital with chronic obstructive pulmonary disease. His PO2 was 65 ...

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