A patient has the following acid-base status: pH = 7.26; PaCO2= 70 mm Hg; and HCO3 = 31 mEq/L. Which of the following could be the cause of his arterial blood gas status?
a. Diabetes mellitus c. Excess antacid in-gestion
b. Salicylate intoxica-tion d. Acute airway ob-struction
Q. 2 Which of the following are true if a patient has a PaO2 of 155 mm Hg?
1. The patient has mild hypoxemia.
2. The patient has an overcorrected PaO2.
3. The patient is in need of supplemental oxygen.
4. The patient is receiving supplemental oxygen therapy.
a. 1 and 3 c. 1 and 4
b. 2 and 4 d. 2 and 3
Q. 3 Which of the following arterial blood gas results could be caused by diarrhea?
a. pH = 7.15; PaCO2 = 20 mm Hg; and HCO3 = 7.4 mEq/L
b. pH = 7.20; PaCO2 = 65 mm Hg; and HCO3 = 26 mEq/L
c. pH = 7.57; PaCO2 = 22 mm Hg; and HCO3 = 20 mEq/L
d. pH = 7.49; PaCO2 = 49 mm Hg; and HCO3 = 38 mEq/L
Q. 4 Respiratory alkalosis can be caused by which of the following? 1. Encephalitis 2. Diuretic therapy 3. Renal dysfunction 4. Nasogastric suctioning 5. Excessive mechanical ventilatory support
a. 2 and 3 c. 2, 4, and 5
b. 1 and 5 d. 1, 3, and 4