Topic
Sleep disorder
About: Sleep disorder is a research topic. Over the lifetime, 19380 publications have been published within this topic receiving 884281 citations. The topic is also known as: somnipathy & non-organic sleep disorder.
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TL;DR: It is suggested that subjective and objective measures should play a complementary role in the clinical assessment of night-waking problems in early childhood.
Abstract: The aim of this study was to investigate the use of objective and subjective sleep measures in diagnostic assessment of night-waking problems during infancy. Infant sleep-wake measures obtained from parental daily logs were compared with objective sleep measures derived from activity monitoring during a week-long period in 66 referred infants. Reported sleep measures were significantly correlated with objective sleep measures and showed a significant level of day-to-day stability. Parents were accurate reporters of sleep-schedule measures (e.g. sleep onset, r = 0.88; sleep duration, r = 0.74; p < 0.0001). However, parents were less accurate in assessing sleep quality measures, significantly overestimating the time that their infants spent in actual sleep and underestimating the number of their night-wakings (r = 0.41 and r = 0.60, respectively; P < 0.001). It is suggested that subjective and objective measures should play a complementary role in the clinical assessment of night-waking problems in early childhood.
233 citations
TL;DR: Data indicate that ventilatory chemosensitivity may be substantially attenuated by even short-term sleep deprivation, and this absence of sleep could therefore contribute to hypoventilation in acutely ill patients.
Abstract: Sleep deprivation is common in acutely ill patients because of their underlying disease and can be compounded by aggressive medical care. While sleep deprivation has been shown to produce a number of psychological and physiologic events, the effects on respiration have been minimally evaluated. We therefore studied resting ventilation and ventilatory responses to hypoxia and hypercapnia before and after 24 h of sleeplessness in 13 healthy men. Hypoxic ventilatory responses (HVR) were measured during progressive isocapnic hypoxia, and hypercapnic ventilatory responses (HCVR) were measured using a rebreathing technique. Measures of resting ventilation, i.e., minute ventilation, tidal volume, arterial oxygen saturation, and end-tidal gas concentrations, did not change with short-term sleep deprivation. Both HVR and HCVR, however, decreased significantly after a single night without sleep. The mean hypoxic response decreased 29% from a slope of 1.20 ± 0.22 (SEM) to 0.85 ± 0.15 L/min/% saturation (p < 0.02), a...
233 citations
TL;DR: Exposure to light early or late in the subjective night has been used therapeutically to produce corrective phase delays or advances in both the sleep pattern and circadian rhythms.
Abstract: Advanced and delayed sleep phase disorders, and the hypersomnia that can accompany winter depression, have been treated successfully by appropriately timed artificial bright light exposure. Under entrainment to the 24-h day-night cycle, the sleep-wake pattern may assume various phase relationships to the circadian pacemaker, as indexed, for example, by abnormally long or short intervals between the onset of melatonin production or the core body temperature minimum and wake-up time. Advanced and delayed sleep phase syndromes and non-24-h sleep-wake syndrome have been variously ascribed to abnormal intrinsic circadian periodicity, deficiency of the entrainment mechanism, or--most simply--patterns of daily light exposure insufficient for adequate phase resetting. The timing of sleep is influenced by underlying circadian phase, but psychosocial constraints also play a major role. Exposure to light early or late in the subjective night has been used therapeutically to produce corrective phase delays or advances, respectively, in both the sleep pattern and circadian rhythms. Supplemental light exposure in fall and winter can reduce the hypersomnia of winter depression, although the therapeutic effect may be less dependent on timing.
233 citations
TL;DR: An observational cohort study among consecutive patients ≥50 years of age who were referred during 1997–2001 to the Yale Center for Sleep Medicine for suspected sleep-disordered breathing and were followed longitudinally for subsequent coronary events or cardiovascular death finds obstructive sleep apnea increases the risk of coronary events and death from cardiovascular causes.
Abstract: Purpose
This study aims to determine whether obstructive sleep apnea independently increases the risk of coronary events, including death from cardiovascular causes.
233 citations
TL;DR: CBT-I improved subjective sleep quality post-treatment, with large treatment effects for the insomnia severity index and Pittsburgh sleep quality index, and results of actigraphy were similar to but of smaller magnitude than subjective measures.
233 citations