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1. In healthy individuals, sleep is associated with a fall in urine and sodium output. 2. Seven male patients with obstructive sleep apnoea exhibited a paradoxical rise in both urine and sodium output during the hours of sleep. 3. Continuous positive airway pressure applied via the nose abolished both the apnoea and the nocturnal rise in urine and sodium output, thereby restoring the diurnal pattern towards normal.


Journal article


Clin Sci (Lond)

Publication Date





183 - 185


Adult, Circadian Rhythm, Humans, Intermittent Positive-Pressure Ventilation, Male, Middle Aged, Sleep Apnea Syndromes, Sodium