OBJECTIVE: A blunting of the nocturnal fall in arterial blood pressure is found in a minority of @entity1 (nondippers) with essential @entity101 . We tested whether @entity387 (snoring and @entity386 or @entity387 ) might explain such a finding for male @entity1 , among whom its prevalence is much higher. SETTING AND @entity1 : We studied 100 new cases of @entity101 in @entity1 , observed consecutively by a local group of general practitioners and diagnosed essential @entity101 in a referral clinic. By using 24 h ambulatory blood pressure monitoring with a SpaceLabs 90207 device, 15 @entity1 were classified initially nondippers (daytime ambulatory blood pressure > or = 136/87 mmHg; night-time decrease by < 10% of the daytime mean), but only 11 were confirmed to be nondippers by continuous blood pressure monitoring with a Finapres device. Ten dippers matched by age, body mass index and mean 24 h blood pressure were used as controls. MAIN OUTCOME MEASURES: Parameters of nocturnal polysomnography. RESULTS: During polysomnography, the nondippers exhibited a blunting of the sleep-related fall in blood pressure and an increased variability in blood pressure associated with @entity387 (heavy snoring for all, with an @entity386 or @entity387 index > 10 in 10 cases). Six of the control @entity1 breathed normally and four snored nonapneically. There was a normal fall in nocturnal blood pressure in all 10 cases. CONCLUSIONS: The nondipper condition appears to be associated with undiagnosed apneic snoring for an unselected population of previously untreated male subjects with a diagnosis of essential @entity101 . Ambulatory blood pressure monitoring of such @entity1 is of limited diagnostic value.

Undiagnosed @entity387 among male nondippers with essential XXXX .

@entity1 :: ('9606', 'Species') :: ['patients', 'PATIENTS', 'men'] @entity101 :: ('MESH:D006973', 'Disease') :: ['hypertensives', 'hypertension'] @entity387 :: ('MESH:D012891', 'Disease') :: ['sleep-disordered breathing', 'hypopnea'] @entity386 :: ('MESH:D001049', 'Disease') :: ['apnea']
@entity101 :: (MESH:D006973,Disease) :: ['hypertension']
