Which of the following is the recommended tidal volume for mechanical ventilation in a patient with ARDS who is in acute respiratory failure?
a. 4 to 8 ml/kg
b. 3 to 5 ml/kg
c. 6 to 10 ml/kg
d. 10 to 12 ml/kg
Q. 2 Administration of positive end expiratory pressure (PEEP) or continuous positive airway pressure (CPAP) is associated with which of the following benefits?
1. Helps maintain open alveoli.
2. Helps with alveoli stability.
3. Helps maintain fluid-filled alveoli open.
4. Ensures surfactant-depleted alveoli remain closed.
a. 1 and 3 only
b. 1, 2, and 3 only
c. 3 and 4 only
d. 2, 3, and 4 only
Q. 3 Which of the following conditions is associated with a lack of response to increased FiO2 in pa-tients receiving positive-pressure ventilation?
a. Dead space
b. Shunt
c. Hypoxemia
d. Hypoventilation
Q. 4 In which of the following types of ventilation can pleural pressure become positive during inspi-ration? 1. Positive-pressure ventilation 2. Spontaneous ventilation 3. Negative-pressure ventilation
a. 2 and 3 only
b. 1 and 2 only
c. 1, 2, and 3
d. 1 only
Q. 5 Which of the following occur with positive-pressure ventilation (PPV)?
1. During inspiration, pleural pressure decreases.
2. During inspiration, pressure in the alveoli increases.
3. The pressure gradients of normal breathing are reversed.
4. During inspiration, alveolar pressure exceeds pleural pressure.
a. 1 and 3 only
b. 1, 2, and 3 only
c. 3 and 4 only
d. 2, 3, and 4 only
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