What are some causes of metabolic acidosis with an increased anion gap? 1. Diarrhea 2. Ketoacidosis 3. Lactic acidosis 4. Renal failure

a. 2 and 3 only
b. 2 and 4 only
c. 2, 3, and 4 only
d. 1, 3, and 4 only

ANS: C
Box 14-5 summarizes causes of anion gap and nonanion gap metabolic acidosis.