Sleep and blood pressure spontaneous baroreflex sensitivity in dippers and non-dippers

Baroreflex sensitivity (BRS) increases during sleep, whereas arterial blood pressure falls. Some hypertensive patients do not have a nocturnal fall in blood pressure (non-dippers). The objective was to ascertain whether there is a difference between 24 h BRS values in dippers and non-dippers that might account for the difference in nocturnal blood pressure behaviour.