Which Vitamin regulates the amount of dietary calcium absorbed from the intestines into the body? 

A patient on a ventilator has become agitated and combative, and the high-pressure alarm is sounding with each breath. To paralyze the patient to prevent him from fighting the ventilator, the respiratory therapist should recommend which of the following medications?

The following ventilatory parameters have been measured on a 65-kg (143-lb) patient who is receiving O2 on a 2-L/min nasal cannula: VT 550 mL RR 15 b/min This patient’s alveolar minute volume is which of the following?

What would the A-aDO2 gradient indicate?

A patient with an upper airway obstruction is receiving helium-oxygen therapy by a nonrebreathing mask. The respiratory therapist notices that the reservoir bag is completely collapsing on inspiration. What is the cause of the problem?

The following pulmonary function values are obtained from a patient: Predicted Observed % Predicted FVC (L) 5.6 3.1 55 FEV1 (L) 3.7 1.3 35 FEV1/FVC (%) 70 42 — TLC (L) 7.0 7.9 113 Which of the following is the most likely interpretation of these results?

After a successful spontaneous breathing trial, the physician plans to extubate a 4-year-old child recovering from pneumonia. The physician wants to provide the highest oxygen percentage possible. What should be recommended in this situation?

A client has an extremely high T3 and T4 level. Which of the following is the least likely manifestation?

During a bedside patient assessment, the respiratory therapist hears vesicular breath sounds over all lung areas. A note should be put into the chart that this represents

Paramedics have brought to the Emergency Department an unconscious patient found in a car with the engine running in a closed garage. He is wearing a nasal cannula delivering 4 LPM of oxygen. A pulse oximetry probe attached to his finger shows an SpO2 reading of 99%. An arterial blood gas sample was drawn and analyzed through a CO-oximeter. The results show a PaO2 of 140 mm Hg, PaCO2 of 30 mm Hg, and SaO2 of 75%. What would best explain the differences in saturation?