To examine the possible relationship between systemic HT and SAS we compared 21 hypertensive (HT+) and 29 normotensive (HT-) patients for morphologic characteristics, sleep disturbances and respiratory events monitored during a full night polysomnography. There was no significant difference between HT+ and HT- patients with respect to age, weight, BMI, sleep stage distribution and disorganizati...

STUDY OBJECTIVES The pattern and distribution of rapid eye movement (REM) sleep changes during development, yet there have been few studies of REM density in children. Although children with obstructive apnea syndrome (OSAS) obstruct primarily during REM sleep, the relationship between REM density and obstructive apnea has not been established for this population. We hypothesized that (i) REM d...

OBJECTIVE To compare polysomnography (PSG) and self-reported sleep, symptoms (pain and fatigue), and anxiety between children with active and inactive juvenile rheumatoid arthritis (JRA) and examine relations among sleep, symptoms, and anxiety. METHODS Two consecutive nights of PSG, self-reported sleep, and symptoms were obtained in 70 children 6-11 years of age with active (n = 35) or inacti...

BACKGROUND A substantial increase in transportation of goods on railway may be hindered by public fear of increased vibration and noise leading to annoyance and sleep disturbance. As the majority of freight trains run during night time, the impact upon sleep is expected to be the most serious adverse effect. The impact of nocturnal vibration on sleep is an area currently lacking in knowledge. W...

Parasomnias are common in the benign forms such as sleepwalking and sleep talking. The more dramatic forms such as sleep terrors and confusional awakenings occur frequently in childhood, but attenuate in the teen years. REM behavior disorder, seen in the elderly, is an uncommon entity. Generally diagnosis is based upon clinical history with sleep studies reserved for unusual presentation. The f...

STUDY OBJECTIVE To investigate pain sensitivity after sleep restriction and the restorative effect of napping. DESIGN A strictly controlled randomized crossover study with continuous polysomnography monitoring was performed. SETTING Laboratory-based study. PARTICIPANTS 11 healthy male volunteers. INTERVENTIONS Volunteers attended two three-day sessions: "sleep restriction" alone and "sl...

OBJECTIVE The modulatory influence of nocturnal sleep on neuroendocrine secretory activity is increasingly recognized as a factor critical to health. Disturbances of sleep may arise from and contribute to the disease process in chronically ill patients with type 1 diabetes. RESEARCH DESIGN AND METHODS Using standard polysomnography and repetitive blood sampling, neuroendocrine sleep architect...

BACKGROUND Alcoholic patients show prominent disturbance of sleep as measured by electroencephalogram, with difficulties in the onset and maintenance of sleep. Given the role of melatonin in the regulation of the sleep-wake cycle, this study examined the relationship between nocturnal expression of melatonin and sleep in alcoholics as compared with control subjects. METHODS Alcoholic patients...

Obstructive sleep apnoea (OSA) is linked to increased cardiovascular risk. This risk can be reduced by nasal continuous positive airway pressure (nCPAP) treatment. As OSA is associated with an increase of several vasoconstrictive factors, we investigated whether nCPAP influences the digital volume pulse wave. We performed digital photoplethysmography during sleep at night in 94 consecutive pati...