The nurse is caring for an adult client who is taking digoxin. Which laboratory value should be reported to the healthcare provider immediately? Reference Range: Sodium [Adult 136 to 145 mEq/L (136 to 145 mmol/L)] Digoxin level (0.8 to 2.0 ng/mL (0.6 to 13 nmol/L)] Potassium (K+) [Adult: 3.5 to 5.0 mEq/L (3.5 to 5.0 mmol/L)] Creatinine [0.5 to 1.1 mg/dL (44 to 97 μmol/L)]

A. Digoxin level of 1.1 ng/mL (1.4 nmol/L): A digoxin level of 1.1 ng/mL is within the therapeutic range (0.8 to 2.0 ng/mL). While it is important to monitor digoxin levels, this value does not indicate an immediate concern. B. Creatinine level of 0.8 mg/dL (70.72 μmol/L): A creatinine level of 0.8 mg/dL is within the normal range (0.5 to 1.1 mg/dL) and does not indicate any renal impairment or immediate issue. C. Potassium level of 3.2 mEq/L (3.2 mmol/L): A potassium level of 3.2 mEq/L is below the normal range (3.5 to 5.0 mEq/L). Hypokalemia can increase the risk of digoxin toxicity and arrhythmias, making this an urgent issue that should be reported to the healthcare provider immediately. D. Sodium level of 135 mEq/L (135 mmol/L): A sodium level of 135 mEq/L is slightly below the normal range (136 to 145 mEq/L), but it is not as critical as a significantly abnormal potassium level in the context of digoxin use. While it should be monitored, it is less urgent compared to the potassium level.