Final answer:
The correct statement indicating understanding of isosorbide mononitrate for angina is to avoid nitrate-containing foods while on the medication. The tablet should not be crushed, and the dosing schedule is to be carefully followed as prescribed.
Step-by-step explanation:
The client's statement that indicates an understanding of the teaching for taking isosorbide mononitrate, a medication prescribed for angina, is C) "I will avoid nitrate-containing foods while on this medication." Isosorbide mononitrate is a nitrate that helps to prevent angina attacks by relaxing and widening blood vessels, and it is important to be cautious with dietary nitrates to avoid potential interactions. The medication should not necessarily be taken on an empty stomach, and the tablet should not be crushed unless the prescribing healthcare provider indicates that it is safe to do so. Additionally, the second dose should not generally be taken right before bedtime to prevent insomnia caused by the increase in heart rate that nitrates can cause. It is essential that patients follow the specific dosing instructions provided by their healthcare provider to ensure the safe and effective use of this medication.