During initial mechanical ventilation of the chronic obstructive pulmonary disease (COPD) pa-tient with chronic hypercapnia, what PaCO2 is most likely used as a target value?
a. 30 mm Hg
b. 40 mm Hg
c. 55 mm Hg
d. 75 mm Hg
ANS: C
In the care of patients with acute exacerbation of COPD and accompanying chronic ventilatory failure, the clinician may target ventilatory support to achieve the patient's "normal" PaCO2 and pH. For COPD patients with chronic hypercapnia, this may mean a target PaCO2 of 50 to 60 mm Hg with a pH of 7.30 to 7.35.
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Fill in the blank(s) with the appropriate word(s).