The amount of condensation occurring in a heated, humidified gas delivery system depends on which of the following?1. length, diameter, and mass of the circuit2. temperature differential along the circuit3. ambient temperature4. rate of gas flow through the circuit

Indications for warming inspired gases include which of the following:

Which of the following would indicate that administration of a bland water aerosol to a patient with post-extubation upper airway edema was having the desired effect?1. decreased work of breathing2. improved vital signs3. decreased stridor or dyspnea4. improved oxygen saturation

Interpret the following blood gas drawn from a patient who is breathing 21% O2: PaO2, 117 torr; SaO2, 98%; pH, 7.57; PaCO2, 20 torr; bicarbonate, 24 mEq/L; and base excess, +1 mEq/L.    I.Normal oxygenation    II.Excessively corrected hypoxemia    III.Uncompensated respiratory alkalosis    IV.Uncompensated metabolic acidosis    V.Compensated respiratory and metabolic alkalosis

After use of a mechanical ventilator has been discontinued, what is the best method to sterilize the reusable main-flow bacteria filter?

Which of the following is NOT a category under Expanded Precautions?

Which of the following are the hazards and complications of incentive spirometry?1. hyperventilation2. fatigue3. discomfort secondary to inadequate pain control4. barotrauma

Which of the following factors will decrease the FIO2 delivered by a low-flow O2 system?I. short inspiratory timeII. fast rate of breathingIII. lower O2 inputIV. large minute ventilation

All of the following indicate a potential need for administration of a water or isotonic saline aerosol except:

What is the goal of using an unheated bubble humidifier with oronasal oxygen delivery systems?