Calculate the CROP index for a patient who has the following data: Fio2 0.40 Sao2 95% Pao2 88 mm Hg Pao2 200 mm Hg Cdynamic 30 ml/cm H2O Cstatic 35 ml/cm H2O MIP 30 cm H2O RR 20 breaths/minute
A. 30 ml/breath/min
B. 25 ml/breath/min
C. 20 ml/breath/min
D. 15 ml/breath/min
ANS: C
A. Incorrect response: See explanation C.
B. Incorrect response: See explanation C.
C. Correct response: The Compliance Rate Oxygenation and Pressure (CROP) index is an integrated factor that is used to predict the success of weaning from mechanical ventilation. The CROP index is calculated as follows:
= 19.8 ml/breath/min
A CROP index greater than 13 ml/breath/minute indicates an increased likelihood of success for ventilator discontinuation.
D. Incorrect response: See explanation C
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