Which of the following is a non-pharmacologic measure for treating orthostatic hypotension?

Sleeping with the head elevated is a recognized non-pharmacologic measure for managing orthostatic hypotension. This approach helps mitigate the effects of gravity on blood circulation, especially during transitions from lying down to an upright position. By elevating the head while sleeping, you reduce the likelihood of blood pooling in the lower extremities when standing up, which can help maintain stable blood pressure levels. This method is particularly useful for individuals who experience symptoms of orthostatic hypotension upon waking or when getting out of bed.

Using a reclining posture during the day can also help manage symptoms, but sleeping with the head elevated specifically targets nighttime and morning changes in blood pressure. It supports a lower resistance on the cardiovascular system when awakening, thus preventing lightheadedness or faintness that some individuals may experience.

The other listed options involve dietary or medication strategies, which fall outside the scope of non-pharmacologic measures aimed at providing immediate lifestyle modifications.