Which findings from M.G.'s assessment would indicate an increased ...

[RRMR]

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

Question 2

One day later, M.G. has shown only slight improvement, and digoxin (Lanoxin) 125 mcg PO daily is added to her orders.
 
  What is the action of the digoxin? Digoxin:
  a. causes systemic vasodilation.
  b. promotes the excretion of sodium and water in the renal tubules.
  c. increases cardiac contractility and cardiac output.
  d. blocks sympathetic nervous system stimulation to the heart.

[laurnthompson]

Answer to Question 1

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.

Answer to Question 2

Answer: c
Digoxin works by increasing cardiac contractility and thus increasing cardiac output.

[RRMR]

Thank you

[laurnthompson]

Happy to help you