Essay
A patient was admitted to the hospital with chronic obstructive pulmonary disease.His PO2 was 55 and PCO2 was 65.A new resident orders 54% 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).Explain why the patient stopped breathing.
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