Which findings from M.G.'s assessment would indicate an increased possibility of digoxin toxicity? Explain your answer
a. Serum potassium level of 2.2 mEq/L
b. Serum sodium level of 139 mEq/L
c. Apical heart rate of 64 beats/minute
d. Digoxin level 1.6 ng/mL
Answer: a
Low potassium levels can increase the potential for digoxin toxicity. M.G. is taking furosemide,
a loop diuretic that excretes potassium as well as sodium and water. Potassium levels should be
monitored carefully during digoxin therapy. The other findings are within normal limits.
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