Which patient assessment would alert the nurse to withhold a loop diuretic?
a. Crackles in the lung bases
b. +2 pitting peripheral edema
c. Serum potassium of 2.6 mEq/L
d. Weight gain of 2 pounds in 2 days
ANS: C
The level indicates hypokalemia and could worsen with the administration of a loop diuretic; therefore, the dose should be withheld. Crackles, peripheral edema, and weight gain do not warrant withholding the medication.
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