Internal-Medicine

Answers: 44–74 173
59. (B) In patients who have prior diuretic use,
resulting in hypokalemia at the time of evaluation,
the bicarbonate tends to be elevated and
the urine potassium low (25 mmol/L) and a
low bicarbonate in the absence of hypertension.
Diabetic ketoacidosis can also result in this constellation
of findings. (Kasper, pp. 258–260)
62. (F) Primary hyperaldosteronism is characterized
by hypertension with high plasma aldosterone
and low plasma renin. (Kasper, pp. 258–260)
63. (A) In lower GI loss (diarrhea), the blood pressure
is normal, the urine potassium is low
(