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PubMed2006

Sleep behavior disorders in a large cohort of chinese (Taiwanese) patients maintained by long-term hemodialysis.

BACKGROUND: Disorders of sleep behavior and sleep-related breathing disorders are common in hemodialysis patients. Most such evidence is based on studies involving small numbers of patients. METHODS: We undertook a large multicenter analysis of sleep behavior in more than 700 Taiwanese patients on maintenance hemodialysis therapy for 6 months to 20-plus years by using self-administered questionnaires: the Pittsburgh Sleep Quality Index, Epworth Sleepiness Scale, and Berlin Questionnaire for risk for sleep apnea, validated for the general population. Patients also completed a questionnaire to assess symptoms related to restless legs and periodic limb movements (PLMs). Sleep behavior was analyzed in relation to demographic and dialysis-related parameters provided by the participating dialysis centers. RESULTS: Sleep disturbance was very common in this cohort, with problems of insomnia (66.6%) exceeding those related to daytime sleepiness (17.8%). Sleep disturbances were associated with restless legs syndrome (RLS)/PLM and a high risk for sleep apnea, determined by using the Berlin Questionnaire. Older age increased the odds of daytime sleepiness, but not insomnia. Lower dialysis dose (single-pool Kt/V) increased the likelihood of daytime sleepiness and was associated with greater rates for RLS/PLM and risk for sleep apnea. Use of antihypertensive medications (a probable surrogate for more severe hypertension) was associated strongly with high risk for sleep apnea. Smoking was associated with RLS/PLM and risk for sleep apnea, whereas consumption of stimulant beverages (coffee and tea) had contrary effects on RLS/PLM and risk for sleep apnea and were not implicated in measures of insomnia or daytime sleepiness. A greater likelihood of insomnia for greater hemoglobin levels and greater likelihood of daytime sleepiness for patients administered vitamin D analogues were not explained by the available data. CONCLUSION: Sleep disorders and sleep-related breathing disorders are common in hemodialysis patients. Greater attention in the care of dialysis patients needs to be directed to the diagnosis and management of sleep disorders.

Adult↗
PubMed2001

Bupropion SR worsens mood during marijuana withdrawal in humans.

RATIONALE: Symptoms of withdrawal after daily marijuana smoking include increased ratings of irritability and depression. Similar mood symptoms are reported by cigarette smokers during nicotine abstinence. OBJECTIVE: Given the successful use of sustained-release bupropion in treating nicotine dependence, this study investigated how maintenance on bupropion influenced symptoms of marijuana withdrawal compared to maintenance on placebo. METHODS: Marijuana smokers (n=10) were maintained outpatient on active (300 mg/day) or placebo (0 mg/day) bupropion for 11 days, and were then maintained inpatient on the same bupropion dose for 17 days. For the first 4 inpatient days, participants smoked active marijuana [2.8% delta9-tetrahydrocannabinol (THC)] 5 times/day. For the remaining inpatient days, participants smoked placebo marijuana (0.0% THC) 5 times/day. Participants were then maintained outpatient on the alternate dose of bupropion for 11 days, followed by a second inpatient residential stay, paralleling the first. Medication administration was double-blind. Mood, psychomotor task performance, food intake, and sleep were measured daily during each inpatient phase. The order of active and placebo bupropion maintenance was counterbalanced between groups. RESULTS: Bupropion had few behavioral effects when participants smoked active marijuana. During placebo marijuana smoking, i.e., active marijuana withdrawal, ratings of irritability, restlessness, depression, and trouble sleeping were increased by bupropion compared to placebo maintenance. CONCLUSIONS: These data suggest that bupropion does not show promise as a potential treatment medication for marijuana dependence.

Adult↗
PubMed1993

[Unexplained confusion in the aged as a sequela of central sleep apnea syndrome--a case report].

Central sleep apnoea syndromes (cSAS) represent a heterogeneous group of sleep-related disorders of breathing during sleep. cSAS may develop in the course of neurological syndromes or congestive heart failure. Frequency increases with age. A case of a 89-year old man is reported who was sent to hospital because of a state of confusion. He fell asleep all day with periods of restlessness during night. Sleep-related apnoeas could already be observed during daytime. Cardiopulmonary daytime diagnostics did not reveal any abnormal findings. Polysomnographic measurements, however, showed an apnoea-hypopnoea index of 37.8 apnoeas/hypopnoeas per hour with predominantly central apnoeas. Pernasal application of 1 litre of oxygen per minute during sleep normalised breathing patterns, daytime sleepiness, and the nighttime states of confusion stopped. Consequently, sleep-related disorders of breathing have to be considered in the differential diagnostics of unclear states of confusion in old age. In these cases polysomnography is indicated even in geriatric patients.

Aged↗
PubMed2005

Ropinirole in a child with attention-deficit hyperactivity disorder and restless legs syndrome.

A 6-year-old male being treated with limited efficacy by methylphenidate immediate release for attention-deficit hyperactivity disorder also presented with sleep disruption due to potential restless legs/periodic limb movement syndrome. Treatment with the dopamine agonist ropinirole resulted in a significant improvement in both his attention-deficit hyperactivity disorder symptoms and sleep problems.

Attention Deficit Disorder with Hyperactivity↗
PubMed1998

[Polyneuropathy in patients with periodic leg movements during sleep].

INTRODUCTION: Periodic legs movements of sleep (PLMS) are rhythmic, standard and repetitive contractions of muscles of the extremities during the sleep. It is known that the patients with restless legs syndrome (RLS) have disorders during the sleep: increase in the latency of the sleep, increased number of arousal, etc.; most of them have also periodic movements of the legs during the sleep. OBJECTIVE: The relationship of the periodic movements of the legs during the sleep with polyneuropathy is not clear. Some authors have found evidence of electrophysiological and pathological of signs of axonal mild polyneuropathy in patients with restless legs syndrome. In this work, we evaluated nine patients that were diagnosed of PLMS, to determine the prevalence of neuropathy in such sample. METHOD: Polysomnography of nocturnal sleep of 7-8 hours was performed, including electromyographic recording of both anterior tibialis muscles; and electroneurographic study of peroneal, sural, ulnar and median nerves. DISCUSSION: Just in none of the nine studied cases were obtained electrophysiological signs of neuropathy; though it has been able to demonstrate the existence of mild alteration of the peripheral nervous system, fundamentally of sensory character; nevertheless, C we think that it would have to be studied the existence of polyneuropathy in all the patients with PLMS in order to discard potentially tractable organic causes.

Adult↗
PubMed2004

Movement disorders: a sleep specialist's perspective.

This review focuses on restless legs syndrome (RLS) and Parkinson's disease (PD). These conditions are frequently encountered in clinical sleep medicine and are among the most important of the "nonapnea" sleep disorders. RLS and PD share many features, including derangement of central dopaminergic systems as the putative cause, akathisia, and nocturnal motor fluctuations. In addition, both conditions increase in prevalence with aging, exhibit a beneficial response to dopaminergic therapy, and cause marked sleep disturbances. They frequently overlap, with about 20% of patients with PD having symptoms of RLS. Both conditions appear to have a genetic predisposition that is "turned on" by environmental factors. Adverse responses to levodopa occur in both RLS and PD, manifested as rebound and augmentation in RLS and as fluctuations in motor response and dyskinesias in PD. Newer dopaminergic agents are helpful in the management of both conditions.

Adrenergic alpha-Agonists↗
PubMed2003

[Diagnostic Spectrum and Filtration Function of Outpatient Sleep Clinics]

In a prospective study all first admittances into the outpatient sleep clinics of the Bezirksklinikum Regensburg and the BKH Wöllershof within 6 months were studied. Data of 212 patients (66 % men, median age 51 years, ages from 7 to 88 years) were collected and evaluated. In over 40 % of the cases the symptoms had persisted for more than 5 years. The most common main diagnoses were: obstructive sleep apnea (34 %), psychophysiological insomnia (21 %), restless-legs-syndrome including periodic leg movement in sleep (15 %) and sleeping disorders in the context of affective disorders (8,5 %). After ambulatory diagnostics 56 % were referred to the sleep laboratory within the same hospital, 5 % were referred to other sleep laboratories, 22 % were treated on an outpatient basis, 7,5 % received somatic or psychiatric treatment and only 7 % of the patients did not need further treatment. Therefore the function of an outpatient sleep clinic as a filter for further treatment can be proven.

Journal Article↗
PubMed2003

[Diagnostic spectrum and filter function of ambulatory sleep centers].

In a prospective study all first admittances into the outpatient sleep clinics of the Bezirksklinikum Regensburg and the BKH W-ilershof within 6 months were studied. Data of 212 patients (66% men, median age 51 years, ages from 7 to 88 years) were collected and evaluated. In over 40% of the cases the symptoms had persisted for more than 5 years. The most common main diagnoses were: obstructive sleep apnea (34%), psychophysiological insomnia (21%), restless-legs-syndrome including periodic leg movement in sleep (15%) and sleeping disorders in the context of affective disorders (8.5%). After ambulatory diagnostics 56% were referred to the sleep laboratory within the same hospital, 5% were referred to other sleep laboratories, 22% were treated on an outpatient basis, 7.5% received somatic or psychiatric treatment and only 7% of the patients did not need further treatment. Therefore the function of an outpatient sleep clinic as a filter for further treatment can be proven.

Adolescent↗
PubMed1994

Review of nocturnal sleep-related eating disorders.

This review provides a historical background on sleep-related eating disorders, summarizes findings from a series of 38 adults, and presents a current classification. The "night-eating syndrome" was first reported in 1955; only nine reports on this syndrome appeared during the next 36 years, seven being single-case studies and two containing the objective monitoring of sleep, that is, polysomnography. In 1991 our sleep center reported on 19 cases, and in 1993 on 38 cases, diagnosed by polysomnography and clinical evaluations. Mean age was 39 years, mean duration of night-eating was 12 years, 66% were women, 68% had nightly binge eating, and 44% were overweight from night-eating. Sleepwalking was the predominant disorder responsible for night-eating; restless legs syndrome, obstructive sleep apnea, and various other conditions (including two cases of anorexia nervosa) were also identified. Cognitive-behavioral therapies were ineffective, but pharmacotherapy was very effective in controlling night-eating and inducing loss of excess weight, and often consisted of a dopaminergic agent taken with codeine at bedtime. Thus, sleep-related eating can be an occult but often treatable cause of obesity. Further research, utilizing polysomnography, is encouraged.

Adolescent↗
PubMed2003

Assessment of sleepiness and unintended sleep in Parkinson's disease patients taking dopamine agonists.

OBJECTIVE: We sought to determine if patients with Parkinson's disease (PD), taking dopamine agonists (DAs) and reporting unintended sleep episodes (SEs), exhibit physiologically defined daytime sleepiness and can thus be differentiated from those taking DAs but not reporting SEs. METHODS: Twenty-four patients with abnormal Epworth Sleepiness Scale scores of >10 who were taking DAs were enrolled into one of two groups: those with SEs (SE+, n=16) and those without (SE-, n=8). Three consecutive days of testing included two nights of polysomnography followed by the Multiple Sleep Latency Test (MSLT). RESULTS: Overall frequency of pathological sleepiness (MSLT <5 min) was 42% (10/24). Mean levels of sleepiness, frequencies of pathological sleepiness, and naps with stage 2 or REM-sleep were similar between SE+ and SE- groups. Sleep tendency was similar in patients prescribed pergolide, ropinirole, and pramipexole combined with levodopa. Polysomnography testing revealed no significant differences between the groups in total sleep time, sleep efficiency, sleep architecture, or presence of restless legs syndrome or periodic leg movements. There was no relation between degree of nocturnal sleep disturbance and level of daytime sleepiness. CONCLUSIONS: The results of this study suggest SEs in PD patients occur upon a background of excessive daytime sleepiness and are unrelated to nocturnal sleep or use of a specific DA.

Circadian Rhythm↗
PubMed2006

Use of sleep-promoting medications in nursing home residents : risks versus benefits.

This paper reviews the use of sleep-promoting medications in nursing home residents with reference to risks versus benefits. Up to two-thirds of elderly people living in institutions experience sleep disturbance. The aetiology of sleep disturbance includes poor sleep hygiene, medical and psychiatric disorders, sleep apnoea, periodic limb movements and restless leg syndrome. One key factor in the development of sleep disturbance in the nursing home is the environment, particularly with respect to high levels of night-time noise and light, low levels of daytime light, and care routines that do not promote sleep. Clinical assessment should include a comprehensive medical, psychiatric and sleep history including a review of prescribed medications. Nonpharmacological interventions for insomnia are underutilised in many clinical settings despite evidence that they are often highly effective. International studies suggest that 50-80% of nursing home residents have at least one prescription for psychotropic medication. Utilisation rates vary dramatically from country to country and from institution to institution. The most commonly prescribed medications for sleep are benzodiazepines and nonbenzodiazepine hypnotics (Z-drugs). The vast majority of studies of these medications are short-term, i.e. < or =2 weeks, although some longer extension trials have recently been carried out. Clinicians are advised to avoid long-acting benzodiazepines and to use hypnotics for as brief a period as possible, in most cases not exceeding 2-3 weeks of treatment. Patients receiving benzodiazepines are at increased risk of daytime sedation, falls, and cognitive and psychomotor impairment. Zaleplon, zolpidem, zopiclone and eszopiclone may have some advantages over the benzodiazepines, particularly with respect to the development of tolerance and dependence. Ramelteon, a novel agent with high selectivity for melatonin receptors, has recently been approved in the US. Use of the antidepressant trazodone for sleep in nondepressed patients is somewhat controversial. Atypical antipsychotics should not be used to treat insomnia unless there is also evidence of severe behavioural symptoms or psychosis.

Aged↗
PubMed1998

Periodic limb movement disorder and restless legs syndrome in children with attention-deficit hyperactivity disorder.

Sleep disruption can lead to symptoms of attention-deficit hyperactivity disorder (ADHD) in children. Since periodic limb movement disorder and/or restless legs syndrome can cause sleep disruption, we assessed whether these two specific sleep disorders are likely to occur in children with ADHD. We asked a series of 69 consecutive parents of children with ADHD questions about the symptoms of periodic limb movement disorder. Based on a positive response to these periodic limb movement disorder queries, 27 children underwent all-night polysomnography. Eighteen children (aged 2 to 15 years) of the 27 (26% of the 69 children with ADHD) had 5 or more periodic leg movements in sleep per hour of sleep and had complaints of sleep disruption, thus fulfilling the criteria for periodic limb movement disorder. A comparably age- and sex-matched group of children referred to a sleep laboratory for sleep complaints but without ADHD showed only a 5% prevalence (2 of 38 subjects) of periodic leg movements in sleep (P=.017). Eight of the 18 children with ADHD and periodic limb movement disorder and one of the two control patients with periodic limb movement disorder had both a personal and parental history of restless legs syndrome symptomatology. This study further documents the occurrence of periodic limb movement disorder and restless legs syndrome in children and is the first large-scale study establishing a possible comorbidity between ADHD and periodic limb movement disorder. We propose that the sleep disruption associated with periodic limb movement disorder and restless legs syndrome and the motor restlessness of restless legs syndrome while awake could contribute to the inattention and hyperactivity seen in a subgroup of ADHD-diagnosed children.

Adolescent↗
PubMed1958

New type sedative and soporific drug.

Trimethoxybenzoyl-glycine-diethylamide induced in dogs and cats normal sleep without preceding ataxia. A five- to ten-fold increase of the soporific dose resulted in restlessness and disorientation instead of sleep. In man, oral doses of 500 to 1500 mg caused sedation or drowsiness, or both, in half the cases. No spindling or drug-induced artifacts were found in electroencephalographic recordings.

Animals↗
PubMed2000

Genetics and sleep disorders.

This review describes the recent growth of our knowledge in the genetics of these sleep disorders and reports some of our preliminary molecular studies in restless legs syndrome.

Chromosome Mapping↗