Which statement about digoxin toxicity indicates that further teaching is needed?

Digoxin is a cardiac glycoside used primarily to treat heart failure and certain types of arrhythmias, and it has a narrow therapeutic index. Therefore, monitoring potassium levels is crucial. When digoxin is taken, low levels of potassium (hypokalemia) can increase the risk of digoxin toxicity, whereas normal to high potassium levels can actually help to mitigate its effects.

Saying, "I will need to increase my potassium intake," can lead to excessive potassium levels, potentially causing complications such as hyperkalemia, which can also affect cardiac function negatively. Patients should be mindful of their potassium intake and should not take potassium supplements or foods rich in potassium without consulting their healthcare provider first.

In contrast, the other statements are indicative of appropriate understanding and monitoring behavior associated with digoxin therapy. Regularly checking drug levels, reporting symptoms like nausea and vomiting (which can indicate toxicity), and informing the provider about any irregular heartbeats are all vital for effective management of digoxin therapy and prevention of toxicity.