Final answer:
The correct statement made by the patient indicating understanding of the teaching is option a. "I may need long-term therapy with another cardiac medication after the procedure."
Step-by-step explanation:
The correct statement made by the patient indicating understanding of the teaching is option a. "I may need long-term therapy with another cardiac medication after the procedure." After undergoing direct-current (DC) cardioversion to treat atrial flutter, it is possible that the patient may require long-term therapy with another cardiac medication to manage their condition. Cardioversion involves delivering an electric shock to the heart to restore a normal heart rhythm. While the procedure can be effective in treating atrial flutter, it does not guarantee that the patient will not need additional medication afterwards to prevent recurrence of the condition.