How long after PEEP is increased should all ventilatory and available hemodynamic parameters be measured and calculated?
a. 5 minutes
b. 15 minutes
c. 25 minutes
d. 40 minutes
Q. 2 Which of the following patients may benefit from PEEP?
a. COPD
b. Asthma
c. ARDS
d. Cystic fibrosis
Q. 3 Assessing the outcome of PEEP at levels set above 15-20 cm H2O is best done using which of the following?
a. Static compliance measurements
b. Pressure-volume loop graphics
c. Pulmonary artery occlusion pressure
d. Central venous pressure measurements
Q. 4 The level of applied PEEP should be set at what point on the pressure-volume curve?
a. At the upper inflection point of the infla-tion curve.
b. Above the lower inflection point of the deflation curve.
c. At the peak inspiration point of the infla-tion curve.
d. Above the upper inflection point of the deflation curve.
Q. 5 An absolute contraindication to PEEP is which of the following?
a. Emphysema
b. Bronchopleural fistula
c. Untreated tension pneumothorax
d. Elevated intracranial pressures
Q. 6 Calculate the pulmonary shunt fraction using the following data: Pb = 757 mm Hg; hemoglobin (Hb) = 11 g/dL; FIO2 = 0.5; PaO2 = 86 mm Hg; PaCO2 = 40 mm Hg; SaO2 = 91; = 40 mm Hg; = 71; respiratory exchange quotient (R) = 0.8.
a. 19
b. 23
c. 26
d. 32
Q. 7 Calculate the pulmonary shunt fraction for a patient with the following data: CAO2 = 17 vol; CaO2 = 16.5 vol; = 11 vol.
a. 8
b. 15
c. 30
d. 37
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