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?

Which of the following alternatives may increase the FIO2 capabilities of air-entrainment nebulizers?I. Add open reservoir to expiratory side of T-tube.II. Connect together two or more nebulizers.III. Use a commercial dual-flow system.IV. Add open reservoir to inspiratory side of T-tube.

Inhalation of dry gases can do which of the following?I. decrease viscosity of secretionsII. mucociliary impairmentIII. increase airway irritability

A respiratory therapist observes that the peak inspiratory pressure of an intubated patient has increased from 24 – 35 cmH2O, exhibits wheezes bilaterally and the pressure limit alarm is intermittently activating. The therapist notes the Pplat and PEEP have not changed. The therapist should: