An older adult client is taking a sustained-release antihypertensive drug. What is the nurse's priority teaching point about this medication

A. "Take your blood pressure only at night so that it is most accurate.": Blood pressure should be monitored at various times of day to get an accurate overall picture of a client’s condition. Measuring only at night may not reflect the typical fluctuations. B. "Swallow the drug whole; do not cut, crush, or chew it.": Sustained-release medications are designed to release the drug slowly over time. Crushing or chewing the tablet can release the entire dose at once, leading to increased risk of side effects and decreased effectiveness. C. "Take the drug before bedtime to reduce your risk of falling.": Taking antihypertensive medications is not the priority teaching point. The main concern is ensuring the drug is taken as intended, which is addressed by the correct administration method (whole tablet). D. "Use over-the-counter (OTC) cold medications cautiously.": OTC cold medications can interact with antihypertensive drugs. While this is important, the priority teaching point should focus on ensuring proper administration of the sustained-release medication.