The nurse is assessing a patient before hanging an IV solution of 0.9% NaCl with KCl in it. Which assessment finding should cause the nurse to hold the IV solution and contact the physician?

A) Weight gain of 2 pounds since last week
B) Dry mucous membranes and skin tenting
C) Urine output 8 mL/hr
D) Blood pressure 98/58

Administering IV potassium to a patient who has oliguria is not safe, because potassium intake faster than potassium output can cause hyperkalemia with dangerous cardiac dysrhythmias. Dry mucous membranes, skin tenting, and blood pressure 98/58 are consistent with the need for IV 0.9% NaCl. Weight gain of 2 pounds in a week does not necessarily indicate fluid overload, because it can be from increased nutritional intake. An overnight weight gain indicates a fluid gain.