The therapist is preparing to perform a spontaneous breathing trial according to a weaning from the mechanical ventilation weaning protocol. Which of the following methods can accomplish this effort? I. using pressure control ventilation with SIMV at a rate of 4 breaths/minute II. having the patient breath through a T-piece or a Briggs adaptor III. applying pressure support ventilation at 6 cm H2O IV. administering continuous positive airway pressure at 5 cm H2O
A. II only
B. I, III, IV only
C. I, II, III only
D. II, III, IV only
Q. 2 Which of the following indexes is a useful predictor of ventilatory muscle fatigue?
A. pressure-time product
B. pressure-time index
C. Pesophageal/Ppleural
D. f /Vt
Q. 3 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
Q. 4 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
Q. 5 A hemodynamically stable patient, receiving mechanical ventilatory support with an Fio2 of 0.4, and a PEEP of 5 cm H2O, has an MIP of 25 cm H2O and an Spo2 of 96. What should the therapist do in this situation?
A. Eliminate the PEEP.
B. Increase this patient's ventilatory support.
C. Initiate the weaning process.
D. Continue mechanically ventilating the patient with the current settings.
Q. 6 A patient is being evaluated for readiness to wean from mechanical ventilation. The values of which of the following mechanical factors would tend to predict successful liberation from the ventilator? I. minute ventilation:greater than 10 L/minute II. vital capacity:greater than 5 ml/kg III. maximum inspiratory pressure: less than 25 cm H2O IV. RSBI: less than 105
A. II, III only
B. III, IV only
C. I, II, IV only
D. II, III, IV only
Quick Reply
