Which symptom would most strongly suggest digoxin toxicity?

Which symptom would most strongly suggest digoxin toxicity?

• A. Shortness of Breath
• B. Chest Pain
• C. Nausea
• D. Vision Changes

Answer: (D)

Vision changes signal digoxin toxicity because this drug, especially at higher levels, can affect retinal function in addition to the heart. Digoxin inhibits Na+/K+-ATPase, and while that helps strengthen cardiac contractions, it can disrupt retinal cells, leading to color vision changes, blurred vision, or seeing yellow halos around lights. These visual disturbances are more specific to digoxin toxicity than the other symptoms listed. Shortness of breath might come from heart failure or fluid overload, chest pain could indicate a coronary issue, and nausea or vomiting can occur for many reasons and are less specific. So when a patient reports visual changes, such as yellow-tinged vision or halos, it strongly points to digoxin toxicity and prompts urgent evaluation of the digoxin level, electrolytes (notably potassium), kidney function, and heart rhythm, with appropriate measures to hold the drug if toxicity is suspected.

Vision changes signal digoxin toxicity because this drug, especially at higher levels, can affect retinal function in addition to the heart. Digoxin inhibits Na+/K+-ATPase, and while that helps strengthen cardiac contractions, it can disrupt retinal cells, leading to color vision changes, blurred vision, or seeing yellow halos around lights. These visual disturbances are more specific to digoxin toxicity than the other symptoms listed. Shortness of breath might come from heart failure or fluid overload, chest pain could indicate a coronary issue, and nausea or vomiting can occur for many reasons and are less specific. So when a patient reports visual changes, such as yellow-tinged vision or halos, it strongly points to digoxin toxicity and prompts urgent evaluation of the digoxin level, electrolytes (notably potassium), kidney function, and heart rhythm, with appropriate measures to hold the drug if toxicity is suspected.