When Caring for a Patient in Shock,the Nurse Notifies the Physician

When caring for a patient in shock,the nurse notifies the physician of the patient's deteriorating status when the patient's arterial blood gas results include which of the following findings?

A) pH 7.48,partial pressure of arterial carbon dioxide (PaCO₂) 33 mm Hg
B) pH 7.33,PaCO₂ 30 mm Hg
C) pH 7.50,PaCO₂ 50 mm Hg
D) pH 7.38,PaCO₂ 45 mm Hg