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Sleep disorders in pregnancy.

PURPOSE OF REVIEW: Sleep disturbances are frequent during pregnancy. The spectrum of association between pregnancy and sleep disturbances ranges from an increased incidence of insomnia, nocturnal awakenings, and parasomnias (especially restless legs syndrome) to snoring and excessive sleepiness. These disturbances occur as a result of physiologic, hormonal, and physical changes associated with pregnancy. Although the timing and occurrence of different sleep disorders varies, they are most prevalent during the third trimester. Despite reports of the various sleep problems, the exact nature and incidence of sleep disorders in pregnancy is not known. Given that limitation, we are presenting an up-to-date review of the current understanding of the relation between sleep and pregnancy. RECENT FINDINGS: Studies suggest that pregnancy affects sleep in multiple ways. There are hormonal changes, physiologic changes, physical factors, and behavioral changes in a pregnant woman-all of which may affect her sleep. They may affect the duration and quality of sleep and lead to a variety of sleep disorders. Pregnancy may also affect an existing sleep disorder. Particular attention may be given to obese pregnant women who would gain more weight during pregnancy or those who develop hypertensive conditions (eg, preeclampsia). Snoring may be more common in women with preeclampsia and the pressor responses to obstructive respiratory events during sleep may be enhanced in preeclamptic women when compared with those with obstructive sleep apnea alone. Several investigators have suggested that obstructive sleep apnea (OSA) may be common in pregnant women despite the presence of intrinsic mechanisms that seem to be geared towards preventing sleep apnea. However, the exact incidence and prevalence of sleep apnea in pregnant women is uncertain. In addition, it is unclear if criteria that are used to define sleep apnea in the general population should be applied to pregnant women. Further investigations are needed to determine if lower thresholds for management of OSA should be used in pregnant women to prevent harm to the fetus. SUMMARY: In conclusion, sleep disturbances are common during pregnancy though the full extent of this relation remains undefined. Large, multi-center, prospective studies are needed for better understanding.

Female↗

Sleep problems in the community elderly as predictors of death and nursing home placement.

In 1984-85, 1855 elderly residents of an urban community responded to a comprehensive baseline interview that included questions regarding an extensive set of sleep characteristics and problems. During the subsequent 3 1/2 years of follow-up, 16.7% of the respondents died and 3.5% were placed in nursing homes. The predictive significance of each sleep characteristic for mortality and for nursing home placement was determined separately for males and females, using Cox proportional hazards models. Selected demographic and psychosocial variables were also entered into the models. Age, problems with activities of daily living (ADL), self-assessed health, income, cognitive impairment, depression and whether respondents were living alone were controlled for statistically. Of the many variables analyzed, in males insomnia was the strongest predictor of both mortality and nursing home placement. For mortality, the relative hazard associated with insomnia exceeded the hazards associated with age, ADL problems, fair-poor health and low income. For nursing home placement, the hazard associated with insomnia exceeded that associated with cognitive impairment. The relationships of insomnia to mortality and nursing home placement were U-shaped, with a worse outcome if insomnia complaints over the preceding 2 weeks were either prominent (numerous or frequent) or absent. For females, insomnia was a borderline predictor of mortality and did not predict nursing home placement at all. Symptoms of the restless legs syndrome predicted mortality for females in some Cox regression models. Reported sleep duration, symptoms of sleep apnea and frequent use of hypnotic drugs did not predict mortality or nursing home placement in either sex.

Aged↗

Examination of the evidence for off-label use of gabapentin.

OBJECTIVES: (1) Describe the relevance of off-label use of gabapentin to managed care pharmacy; (2) summarize recent FDA warnings and media reports related to off-label gabapentin use; (3) review medical information pertaining to the off-label use of gabapentin; (4) outline alternatives to off-label use of gabapentin in an evidence-based fashion, where literature exists to support such alternatives; and (5) encourage key clinicians and decision makers in managed care pharmacy to develop and support programs that restrict the use of gabapentin to specific evidence-based situations. SUMMARY: Gabapentin is approved by the U.S. Food and Drug Administration (FDA) for adjunctive therapy in treatment of partial seizures and postherpetic neuralgia. Various off-label (unapproved) uses have been reported, and the use of gabapentin for off-label purposes has reportedly exceeded use for FDAapproved indications. Pharmaceutical marketing practices and physician dissatisfaction with currently available pharmacological treatment options may be key factors that contribute to this prescribing trend. Recently, the media has focused on these issues, noting that many cases of reported safety and effectiveness of gabapentin for off-label use may have been fabricated. A thorough review of the medical and pharmacy literature related to off-label use of gabapentin was performed, and a summary of the literature for the following conditions is presented: bipolar disorder, peripheral neuropathy, diabetic neuropathy, complex regional pain syndrome, attention deficit disorder, restless legs syndrome, trigeminal neuralgia, periodic limb movement disorder of sleep, migraine headaches, and alcohol withdrawal syndrome. A common theme in the medical literature for gabapentin is the prevalence of open-label studies and a lack of randomized controlled clinical trials for all but a small number of indications. CONCLUSIONS: In the majority of circumstances where it has reported potential for.off-label. use, gabapentin is not the optimal treatment. The off-label use of gabapentin for indications not approved by the FDA should be reserved for cases where there is solid research support (e.g., diabetic neuropathy and prophylaxis of frequent migraine headaches). Managed care pharmacists should develop programs to restrict the use of gabapentin to these specific evidence-based situations, and key decision makers in managed care practice should feel confident in supporting these use restrictions for gabapentin.

Acetates↗

Restless legs syndrome probably induced by risperidone treatment.

BACKGROUND: According to some reports, patients treated with risperidone may develop akathisia. Restless legs syndrome (RLS), which shares some clinical features with akathisia, is a distinct movement and sleep disorder that may be induced by various drugs that act on the CNS. METHODS: We studied a 31-year-old patient suffering from a schizoaffective disorder including auditory hallucinations who developed symptoms typical of the RLS during treatment with risperidone, using polysomnography to objectify sleep disturbances and associated periodic leg movements during sleep (PLMS). RESULTS: After switching from clozapine to risperidone treatment, the patient complained about dysethesias primarily of the legs, an urge to walk around, and sleep disturbances. The latter could be confirmed by polysomnography, including an abnormal PLMS index. Risperidone was switched to haloperidol. However, RLS symptoms were still present. After switching to quetiapine, RLS symptoms vanished and a second polysomnography test demonstrated better sleep quality and normal PLMS measurements. During the whole treatment period with different neuroleptics, the patient additionally received valproic acid. CONCLUSIONS: Symptoms typical of RLS may be induced by risperidone treatment and should be differentiated from akathisia. Although polysomnography is not necessary, it may be helpful confirming the diagnosis.

Adult↗

Augmentation of the restless legs syndrome with carbidopa/levodopa.

Dopaminergic agents and carbidopa/levodopa have become the preferred treatment for both the restless legs (RL) syndrome and for periodic limb movements in sleep (PLMS). For once-nightly treatments with carbidopa/ levodopa, a problem with morning end-of-dose rebound increases in leg movements has been reported to occur in the about one-fourth of the patients. In our clinical studies a previously unreported but far more significant problem of markedly augmented RL symptoms occurred in the afternoon and the evening prior to taking the next nightly dose. A systematic prospective evaluation of this augmentation in 46 consecutive patients treated with carbidopa/ levodopa for RL syndrome or PLMS disorder found this augmentation to be the major adverse effect of treatment. Augmentation occurred for 31% of PLMS patients and 82% of all RL patients. It was greater for subjects with more severe RL symptoms and for patients on higher doses (> or = 50/200 mg carbidopa/levodopa) but was unrelated to gender, age or baseline severity of PLMS. This augmentation was severe enough to require medication change for 50% of the RL patients and 13% of PLMS patients. Augmentation resolved with cessation of the medication and could be minimized by keeping the dose low.

Carbidopa↗

Restless legs syndrome.

Restless legs syndrome (RLS), first described in 1672 and given its name in 1945, is one of the most common sleep and movement disorders. Modern population-based studies demonstrate a prevalence between 5% and 15% in adult white populations. According to the diagnostic criteria, RLS is defined as an irresistable desire to move limbs, usually associated with paresthesias/dysesthesias and motor restlessness. The symptoms start or worsen at rest and improve with activity. Additionally, the symptoms worsen in the evenings and/or nights, which often results in disturbance of sleep with daytime tiredness. There is often a family history of RLS. Initially, the disease course is usually fluctuating and later may become continuous or chronic-progressive. The diagnosis is based on the patient history and is supported by a normal neurological examination. RLS is confirmed by the finding of periodic limb movements (PLM) in polysomnographic investigations and by a response to dopaminergic medication. A large number of studies have confirmed the effect of levodopa (L-dopa) in the treatment of RLS. A majority of the patients treated over a longer period of time with L-dopa, however, develop problems with an effect called augmentation, where the RLS symptoms begin appearing earlier during the day and involve new parts of the body with increasing severity. A large number of studies have now confirmed that dopamine agonists can also be effective in RLS therapy, and that this treatment seems to involve less risk for augmentation. This paper provides a general review of RLS with a focus on current treatment options.

Adult↗

Practice parameters for the dopaminergic treatment of restless legs syndrome and periodic limb movement disorder.

Dopaminergic agents, particularly dopamine agonists, have been used with increasing frequency in the treatment of restless legs syndrome and periodic limb movement disorder. These evidence-based practice parameters are complementary to the Practice Parameters for the Treatment of Restless Legs Syndrome and Periodic Limb Movement Disorder, published in 1999. These practice parameters were developed by the Standards of Practice Committee and reviewed and approved by the Board of Directors of the American Academy of Sleep Medicine. Recommendations are based on the accompanying comprehensive review of the medical literature regarding the dopaminergic treatment of restless legs syndrome (RLS) and periodic limb movement disorder (PLMD), which was developed by a task force commissioned by the American Academy of Sleep Medicine. The following recommendations serve as a guide to the appropriate use of dopaminergic agents in the treatment of RLS and PLMD. Levodopa with decarboxylase inhibitor, and the dopaminergic agonists pergolide, pramipexole, and ropinirole are effective in the treatment of RLS and PLMD. Other dopamine agonists (talipexole, cabergoline, piribidel, and alpha-dihydroergocryptine) and the dopaminergic agents amantadine and selegiline may be effective in the treatment of RLS and PLMD, but the level of effectiveness of these medications is not currently established. Lastly, no specific recommendations can be made regarding dopaminergic treatment of children or pregnant women with RLS or PLMD.

Dopamine Agonists↗

Randomized, double-blind, placebo-controlled, short-term trial of ropinirole in restless legs syndrome.

BACKGROUND AND PURPOSE: Restless legs syndrome (RLS) is a condition characterized by an urge to move the legs, usually accompanied by lower limb paresthesias. These symptoms worsen at rest, are relieved by activity, and are worse at night. Previous studies have suggested that dopaminergic drugs such as L-dopa and dopamine agonists, as well as benzodiazepines and opioids, can treat RLS successfully. The purpose of this study was to test the clinical efficacy of ropinirole, a D2/D3 agonist, in the treatment of RLS in a double-blind, short-term, placebo-controlled clinical trial. PATIENTS AND METHODS: After undergoing successful open-label titration and dose adjustments with ropinirole for RLS symptoms over a period of 4 weeks, 22 RLS patients (mean age=50.8; mean duration of symptoms=26.1 years) were randomized to receive either placebo (n=13) or ropinirole (n=9) for 2 additional weeks. Outcome measures included assessment of periodic leg movements in sleep (PLMS) recorded with nocturnal polysomnography and RLS symptoms as assessed with the International Restless Legs Syndrome Study Group (IRLSSG) Rating Scale. Secondary outcomes included sleep macroarchitecture. RESULTS: Results indicated that relative to placebo, ropinirole, at a mean dose of 1.4mg HS significantly decreased PLMS and RLS symptoms. Sleep macroarchitecture did not change. Side effects were typical of all dopamine agonists and were dose related. The majority of patients elected to continue treatment with ropinirole upon study completion. CONCLUSIONS: Ropinirole successfully treated long-standing RLS and can be considered a viable short-term treatment for this condition.

Adult↗

Restless legs syndrome: an update on diagnosis and management.

Restless legs syndrome (RLS) is a relatively common disorder that leads to considerable distress in and of itself and amplifies other physical symptoms, such as pain, by exacerbating sleep disturbance in affected patients. Due to its prevalence, it is important to query patients about this syndrome, evaluate for treatable causes, and provide palliative therapy to optimize comfort and normalize sleep patterns. This brief review summarizes current understanding of pathophysiology, epidemiology, differential diagnosis, and treatment modalities.

Aged↗

Restless Legs Syndrome.

In the past 10 years, restless legs syndrome (RLS) has gained recognition as a common sleep disorder. There are several therapeutic options in treating patients with RLS. RLS causes significant sleep disturbance and negatively impacts on patient quality of life. Pharmacologic treatment can result in improved sleep and quality of life issues. RLS patients should be evaluated for iron deficiency anemia; iron replacement in deficient patients may lead to a resolution of symptoms or may reduce the severity of their symptoms. For patients with daily symptoms, the initial therapy is dopamine agonists. Low doses given in the evening or 2 hours before bed provide adequate relief of symptoms for many RLS patients. Augmentation can be seen with all dopamine agents, but is most prevalent with levodopa. Levodopa therapy is best used for milder intermittent symptoms or in aggravating situations, such as long car rides. Opiates and antiepileptics remain a beneficial therapy for RLS and are useful in patients who experience pain as part of their RLS. Newer anticonvulsants may provide additional treatment options, but they have yet to undergo clinical trials. Intravenous iron also may provide relief of RLS symptoms; however, dosing and safety issues have not been fully evaluated in a RLS population.

Journal Article↗

ADHD and insomnia.

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Antidepressive Agents↗

Prevalence of restless legs syndrome in non-institutionalized Japanese elderly.

The purpose of the present paper was to evaluate the prevalence of restless legs syndrome (RLS) in a non-institutionalized Japanese elderly population. The subjects consisted of 8900 elderly people >65 years of age belonging to the Seniors Association in Izumo City in November 2000. The present study was conducted in two parts. The phase 1 investigation was a screening by mailed questionnaire and the phase 2 investigation was diagnosis by face-to-face interview. Subjects with possible cases of RLS in phase 1 proceeded to phase 2 and definite cases of RLS were then detected. In phase 1, a total of 3287 subjects completely answering all questionnaire items, were defined as the subjects of the present study. A total of 150 were classified as having 'probable RLS', resulting in a prevalence of 4.6%. These subjects with probable RLS in phase 1 were detected as the subjects of phase 2. By face-to-face interview and various clinical examinations, a total of 35 subjects (nine male, 26 female) were diagnosed as having definite RLS, resulting in a prevalence of 1.06%. Furthermore, seven subjects (two male, five female) with symptomatic RLS were detected and finally 28 subjects (seven male, 21 female) were diagnosed as having idiopathic RLS. It was significantly higher in women for both the total and idiopathic RLS groups (0.60% male vs 1.46% female; 0.46% male vs. 1.18% female, respectively). The prevalence of RLS may be lower in the Japanese elderly than that in Caucasian subjects. These results could enhance understanding of the differences in predisposition between the races.

Activities of Daily Living↗

Restless legs syndrome and pregnancy.

OBJECTIVE: To perform a large and detailed epidemiologic study on restless legs syndrome (RLS) during pregnancy and the puerperium. METHODS: A structured clinical interview, assessing symptoms since the beginning of pregnancy, was performed to a population of 642 pregnant women at the time of delivery and at follow-up evaluation (1, 3, and 6 months after delivery). Main hematologic tests were also evaluated. A woman was considered affected if she met the International RLS Study Group criteria for RLS diagnosis. RESULTS: Twenty-six percent of women were affected by RLS during their pregnancy. The disease was strongly related to the third trimester of pregnancy and tended to disappear reaching the time of delivery. Affected women presented lower values of hemoglobin and mean corpuscular volume compared with healthy subjects (both groups received the same supplemental iron and folate therapy). CONCLUSIONS: Pregnancy is associated with transient restless legs syndrome.

Adult↗

Activity patterns of leg muscles in periodic limb movement disorder.

The movements of leg muscles in reference to periodic limb movement disorder (PLMD) have only been described in global terms. The sequences of contracting muscles that cause the PLMs are said to be stereotypical. There is, however, doubt about this fixed sequencing in PLMD. Our goal was to define the sequence of muscle movements in PLMs and then analyse their patterns. We recorded with surface EMG all movements of the muscles said to be involved in PLMs (extensor digitorum brevis, EDB; tibialis anterior, TA; biceps femoris, BF; tensor fasciae latae; TFL) as well as the quadriceps (Q) and soleus (S) muscles in 12 patients with restless legs syndrome combined with PLMD. Accompanying polysomnography provided the sleep parameters. In total, 469 movements were analysed. In only 12% was there the appearance of the classic movement (EDB-TA-BF-TFL) or its direct variants. The most frequent sequences were characterised by contraction of only the TA, TA-EDB only, or TA-EDB followed by all other combinations (32%). The pattern EDB only, EDB-TA, or EDB-TA followed by contraction of one or more other muscles, was seen in 18%. All other combinations appeared in much smaller numbers or only once. Eight patients had specific patterns. Three consistently started with the same muscle. One patient always contracted all six muscles. Six patients never contracted more than three muscles. The number of muscles contracted correlated positively with the appearance of arousal from sleep. The interval between onset of contractions within the PLMs varied randomly in a range of 0-1 s. Within PLMs many variations of muscle movements were documented. Patterns were recognisable, individually determined, and related to arousal from sleep.

Aged↗

Clinical insights into catathrenia: A real-world analysis from a tertiary sleep center.

INTRODUCTION: Catathrenia is a rare sleep-related breathing disorder marked by groaning during prolonged expiration, often underrecognized or misdiagnosed as obstructive or central sleep apnoea (OSA or CSA) or parasomnia. Understanding its clinical and polysomnographic features is essential for accurate diagnosis and management. MATERIALS AND METHODS: We performed a retrospective observational study of adult patients diagnosed with catathrenia at Serviço de Medicina do Sono de Coimbra. Diagnosis was established by attended overnight polysomnography (PSG) with synchronised audio-video recording. Demographic data, symptoms, comorbidities, PSG variables, treatment modalities, and outcomes were reviewed. Catathrenia events were defined as deep inhalation followed by prolonged exhalation with monotonous groaning. RESULTS: Ten patients were included. Median age was 46 years (range 27-78), mostly female (70%). Common comorbidities included obesity (n = 4), depression (n = 2), Parkinson's disease (n = 1), and restless legs syndrome (n = 1). Six patients (60%) had concomitant obstructive sleep apnoea (OSA). Seven patients had excessive daytime sleepiness (Epworth Sleepiness Scale > 10). All catathrenia episodes occurred exclusively during REM sleep. Continuous positive airway pressure (CPAP) therapy was the most frequently used treatment and was associated with objective or subjective improvement in most patients. Two patients experienced spontaneous remission. CONCLUSION: Catathrenia remains underdiagnosed and can mimic other sleep disorders. Recognition of its REM-sleep predominance and PSG pattern is essential. Individualised treatment, often involving PAP therapy, may improve symptoms and patient outcomes.

Humans↗

Restless legs syndrome in childhood and adolescence.

Restless legs syndrome (RLS) is believed to be a condition primarily of middle to older age. However, it can have its onset in childhood. Five illustrative case histories with an autosomal dominant mode of inheritance are described. A mother and her 3 children (age: 6 1/2, 4 and 1 1/2 years) as well as a 16-year-old patient from a second family have typical RLS signs of leg discomfort (paresthesias) and motor restlessness prevalent at night and at rest, with temporary relief by activity. Polysomnography or videotaping revealed periodic limb movements in sleep (PLMS) and, in some cases, involuntary jerking of the legs was present during wakefulness as well. Clinicians should be aware that RLS can occur in childhood and adolescence and may be more common than heretofore recognized. "Growing pains" and attention deficit hyperactivity disorder (ADHD) are in the differential diagnosis of RLS in childhood.

Adolescent↗

Ropinirole in the treatment of restless legs syndrome: results from the TREAT RLS 1 study, a 12 week, randomised, placebo controlled study in 10 European countries.

OBJECTIVE: To assess the efficacy, safety, and tolerability of ropinirole in the treatment of patients with restless legs syndrome. METHODS: A 12 week, prospective, double blind, randomised comparison involving 284 patients from 10 European countries. All participants had a score of > or =15 on the international restless legs scale (IRLS). Patients were randomised (1:1) to receive either ropinirole 0.25-4.0 mg once daily or placebo. The primary efficacy end point was mean change from baseline to week 12 in total IRLS score. Global improvements (clinical global impression (CGI) scale) and improvements in sleep, health related quality of life (QoL; using generic and disease specific measures), work, and other activities were also assessed. RESULTS: 112/146 patients (76.7%) taking ropinirole and 109/138 (79.0%) taking placebo completed the study. Improvement in IRLS at week 12 with ropinirole (mean (SD) dose, 1.90 (1.13) mg/day) was greater than with placebo (mean (SE): -11.04 (0.719) v -8.03 (0.738) points; adjusted difference = -3.01 (95% confidence interval (CI), -5.03 to -0.99); p = 0.0036). More patients in the ropinirole group (53.4%) showed improvement on the CGI scale at week 12 than in the placebo group (40.9%; adjusted odds ratio = 1.7 (1.02 to 2.69); p = 0.0416). Significant differences on both IRLS and CGI scales favouring ropinirole were apparent by week 1. Ropinirole was also associated with significantly greater improvements in sleep and QoL end points. The most common adverse events were nausea and headache. CONCLUSIONS: Ropinirole improves restless legs syndrome compared with placebo, with benefits apparent by week 1. It is generally well tolerated.

Adult↗

Insomnia in maintenance haemodialysis patients.

BACKGROUND: Studies in the last 15 years have shown a high prevalence of sleep disorders in maintenance haemodialysis (HD) patients. METHODS: To investigate whether the new technical and therapeutic advances of the last decade have had a positive impact on sleep disturbances in HD patients: 694 patients (384 males, 310 females) were surveyed using a specific questionnaire; their clinical, lifestyle and dialysis data were also recorded. RESULTS: Forty-five per cent of patients (n=311; 156 males, 155 females) complained of insomnia, defined either by delayed sleep onset and/or night-time waking, and were included in the insomnia group; the remainder were used as controls (control group). There was a significantly higher risk of insomnia in patients with >12 months on dialysis, in patients dialysed in the morning (P<0.003), and in patients with higher parathyroid hormone (PTH) levels (P<0.05). Body mass index, body weight gain and blood pressure did not differ between the groups, and neither did the dialysis parameters. Creatinine and urea plasma levels were higher in the control group vs the insomnia group (P<0.001), but there was no difference in haemoglobin concentrations or use of erythropoietin, calcitriol and antihypertensive drugs. Cigarette smoking, caffeine or alcohol intake were comparable in the two groups. The most frequently recorded sleep disorders were night-time waking (92%), trouble falling asleep (67%) and early morning waking (62%). Restless leg symptoms were described in 52% of patients with insomnia. CONCLUSIONS: The prevalence of insomnia in HD patients is still very high; elderly patients, and those with longer time on dialysis and high levels of PTH are at major risk of insomnia, whereas type of dialysis, haemoglobin levels and behavioural factors do not seem to play a critical role in determining this sleep disorder.

Age Distribution↗