Calculate and determine the weanability of patients with this data: CD = 25 mL/cm H2O, PImax = ?28 cm H2O, PaO2 = 93 mm Hg, PAO2 = 158 mm Hg, and f = 22 breaths/min
a. 2—not weanable
b. 19—weanable
c. 32—not weanable
d. 54—weanable
ANS: B
Use the CROP formula: CROP = (CD ⋅ PImax ⋅ [PaO2/PAO2])/f.
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