Author Question: Calculate the CROP index for a patient who has the following data: Fio2 0.40 Sao2 95 Pao2 88 mm Hg ... (Read 44 times)

future617RT · **on:** Jul 16, 2018

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

Question 2

The therapist has been asked to evaluate a mechanically ventilated patient for weaning. Why would the therapist use an esophageal balloon for this procedure?

A. to measure the patient's maximum inspiratory effort
B. to obtain the pressure-time index
C. to estimate the patient's intrapleural pressure
D. to evaluate the patient's accessory muscle use

kishoreddi · **Reply #1 on:** Jul 16, 2018

Answer to Question 1

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

Answer to Question 2

ANS: C
A. Incorrect response: See explanation C.
B. Incorrect response: See explanation C.
C. Correct response: An esophageal balloon is used to measure esophageal pressure (Pes), which is an estimate of the patient's intrapleural pressure. The Pes is needed to access patient muscle loads. Muscle loads can be expressed as either work or pressure-time products (PTPs) per breath.
D. Incorrect response: See explanation C.