The nurse is caring for four hypertensive clients. Which drug-laboratory value combination would the nurse report immediately to the health care provider?
a. Furosemide/potassium: 2.1 mEq/L
b. Hydrochlorothiazide/potassium: 4.2 mEq/L
c. Spironolactone/potassium: 5.1 mEq/L
d. Torsemide/sodium: 142 mEq/L