A collaborative problem in caring for patients with COPD includes the potential for respiratory failure. An important indicator on an arterial blood gas (ABG) analysis that respiratory failure is occurring includes which of the following?
A) O2 saturation of 95%
B) pH of 7.36
C) HCO3 of 24 mEq/L
D) PaCO2 of 70 mm Hg
Ans: D
Feedback: A PaCO2 of 70 mm Hg indicates an elevated carbon dioxide level in the blood (hypercapnia) which is one indicator of respiratory failure. An oxygen saturation of 95%, HCO3 (bicarbonate) level of 24 mEq/L, and a pH of 7.36 are all within normal limits on an arterial blood gas analysis.
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