IT IS WELL DOCUMENTED THAT PATIENTS WITH OBSTRUCTIVE SLEEP APNEA (OSA) OFTEN HAVE MORE APNEA EVENTS IN THE SUPINE POSITION THAN IN THE LATERAL POSITION,15 and positional treatment is effective in these patients.6 The positional OSA patients are reported to be thinner and have less severe apnea than nonpositional patients.3 An anatomic study of upper airways in OSA patients revealed that positio...

BACKGROUND Snoring is frequently associated with obstructive sleep apnea (OSA). Previous studies have shown that bone mineral density was significantly lower in patients with OSA than in controls; however, these studies did not focus on fractures. Fragility fractures can lead to long-term disabilities and a decrease in quality of life. The present study aimed to investigate the association betw...

Co-morbid disease in COPD – more than a coincidence Chronic obstructive pulmonary disease (COPD) is a major cause of disability and death worldwide. Its prevalence and mortality are increasing disproportionately among the elderly, women, persons of lower socioeconomic status, and the populations of developing countries (Anthonisen 1988; Borson et al 1998; Andreassen and Vestbo 2003). There is i...

Children snore less than adults and have fewer obstructive apneas, suggesting a less collapsible upper airway. We therefore hypothesized that the compensatory upper airway responses to subatmospheric pressure loading decrease with age because of changes in upper airway structure and ventilatory drive. We measured upper airway upstream pressure-flow relationships during sleep in 20 nonsnoring, n...

INTRODUCTION Mandibular advancement device (MAD) may represent a feasible choice in the treatment of obstructive sleep apnea-hypopnea syndrome (OSAHS), in well selected patients. OBJECTIVE The aim of this study is to assess the efficacy of MAD in patients with OSAHS, using split night polysomnography (SNP). METHOD We performed an auto controlled clinical trial to assess the efficacy of MAD ...

Studies regarding the association between snoring and metabolic abnormalities have been inconsistent. We examine whether snoring frequency and obstructive sleep apnea markers are associated with metabolic syndrome (MetS) among Koreans aged 40-69 years. A total of 72,885 subjects (24,856 men, 48,029 women) from the Health Examinees Gem study between 2009 and 2013 were included. Snoring frequency...

BACKGROUND There is little known about epidemiologic evidence on periodic leg movements during sleep (PLMS) for the Japanese. The present study was a cross-sectional epidemiologic study to estimate the prevalence of PLMS and examine the associated factors of PLMS in Japanese community-dwelling adults. METHODS The subjects were 884 with bed partners or bedroom mates of 1,889 Japanese adults ag...

Sleep physiology and sleep hygiene play significant roles in maintaining the daily lives of individuals given that sleep is an important physiological need to protect the functions of the human brain. Sleep disordered breathing (SDB) is an important disease that disturbs this need. Snoring and Obstructive Sleep Apnea Syndrome (OSAS) are clinical conditions that affect all body organs and system...

A 63-year-old woman was referred to the sleep center complaining of daytime sleepiness, snoring, and insomnia. She was single and never married but, on a recent business trip, was noted by a colleague to snore loudly. There was no report of witnessed apnea. She slept 8 to 8.5 hours per night but complained of daytime drowsiness and mental fogginess, particularly in the afternoons. She occasiona...

BACKGROUND Sleep disturbances in late pregnancy are common. This study aimed to survey sleep problems in third trimester pregnant women and to compare sleep in the pre-pregnancy period with the third trimester. METHODS Third-trimester women (n=650) were sent a postal survey containing questions relating to sleep experience, including perceived sleep quality, sleep difficulties, night waking, ...