Acid-Base and Electrolyte Balance — MCQs

Which of the following would be the plasma osmolality of a child with plasma Na+ 125 mEq/L, glucose of 108 mg/dL, and blood urea nitrogen (BUN) of 140 mg/dL?

Which of the following conditions can cause metabolic acidosis?

All causes of metabolic acidosis, except:

In a solution, the concentration of hydrogen ion is 1 x 10^-7 moles/litre at 25°C. What will be the pH of the solution?

Calculate the anion gap from the following information: Na+ = 137 mmol/L, K+ = 4 mmol/L, Cl- = 110 mmol/L, HCO3- = 15 mmol/L.

Which of the following is NOT a cause of hypomagnesemia?

Increased serum calcium is seen in all of the following conditions except?

Which buffer system has the highest pKa?

Widened anionic gap is not seen in which of the following conditions?

A 27-year-old woman presents to the emergency room with a panic attack. She appears healthy except for tachycardia and a respiratory rate of 30. Electrolytes include calcium 10.0 mg/dL, albumin 4.0 g/dL, phosphorus 0.8 mg/dL, and magnesium 1.5 mEq/L. Arterial blood gases include pH of 7.56, PCO2 21 mm Hg, and PO2 99 mm Hg. Which of the following is the most likely cause of the hypophosphatemia?