Sleep disorder syndromes of post-acute sequelae of SARS-CoV-2 (PASC) / Long Covid.

INTRODUCTION: COVID-19 infection has resulted in a high prevalence of a post-infectious syndrome, known as post-acute sequelae of SARS-CoV-2 (PASC) or "Long COVID". PASC is a heterogeneous disease with a high prevalence of sleep disturbances, varying from an insomnia disorder to excessive daytime sleepiness. METHODS: Patients seen in the Covid Survivorship Program at the Beth Israel Deaconess Medical Center Boston, USA, were screened for sleep disorders as part of a comprehensive multi-system evaluation. Those who screened positive were referred for a comprehensive sleep evaluation in a dedicated COVID-19-Sleep clinic, followed by diagnostic sleep testing and treatment. This report summarizes patients who completed an American Academy of Sleep Medicine (AASM) accredited facility-based diagnostic evaluation. International Classification of Sleep Disorders 3rd Edition-Revised criteria were met for all diagnoses. RESULTS: In 42 patients with PASC, five categories of sleep disorder syndromes were observed following a sleep clinic evaluation, including obstructive sleep apnea, chronic insomnia disorder, primary hypersomnia, REM behavior disorder (RBD), and new onset circadian phase delay. Seven patients met criteria for idiopathic hypersomnia, and two had narcolepsy type 2. RBD patients were infected in three different waves; circadian disturbance patients were all infected in the winter wave of 2020/21, and the primary hypersomnolence group occurred during all waves, predominantly the initial wave of 2020. A peculiar form of insomnia was a persistent loss of sleep regularity. CONCLUSIONS: Specific sleep symptoms/syndromes are reported in this select group of patients with PASC/Long Covid. As new onset sleep complaints are prevalent in PASC, we recommend a complete clinical and investigative sleep evaluation for persistent severe sleep symptoms following COVID-19 infection.

Risk stratification for frailty, impairment and assessment of sleep disorders in community-dwelling older adults.

BACKGROUND: Frailty is associated with an increased susceptibility to functional decline, impairment, hospitalization, and mortality among the older adults. However, the potential reversibility of frailty lies in identifying modifiable factors that could prevent, mitigate, or interrupt its progression. While there is a suggestion that sleep disorders may increase the risk of frailty and impairment, the risk stratification of this relationship remains inconclusive. OBJECTIVE: Stratify the risk of frailty and impairment and investigate potential connections with sleep quality, excessive daytime sleepiness, and the risk of obstructive sleep apnea in older adults dwelling in the community. METHODS: This was a quantitative cross-sectional investigation. Frailty risk and impairment were stratified using the Frail Non-disabled Questionnaire (for impairment) and the FRAIL Scale (for Frailty). The assessment of excessive daytime sleepiness, sleep quality, and the risk of obstructive sleep apnea involved the employment of the Epworth Sleepiness Scale, Pittsburgh Sleep Quality Index, and the STOP-BANG questionnaire, respectively. RESULTS: A total of 109 older adults living in the urban area (86 %, p = 0.010), females (61 %; p = 0.030), median age 68 (64-75) years, with overweight (36 %, p < 0.010) and self-identified as belonging to other racial or ethnic categories (71 %, p < 0.010). According to the impairment assessment, 32 % of participants were classified as disable (p < 0.01). Conversely, as per the frailty evaluation, 33 % were pre-frail and 25 % were identified as frail. Additionally, a substantial proportion experienced poor sleep quality (80 %, p = 0.010), exhibited a moderate risk of obstructive sleep apnea (49 %, p < 0.010), and showed no signs of excessive daytime sleepiness (62 %, p < 0.010). There was a modest correlation between frailty and impairment with poor sleep quality (rho = 0.39; p < 0.001) and the risk of obstructive sleep apnea (rho = 0.26; p = 0.000). However, the was no significant relationship was observed between frailty and impairment and excessive daytime sleepiness (rho = 0.04; p = 0.660). Similarly, a modest correlation was observed between sleep quality (rho = 0.33; p < 0.001), the risk of obstructive sleep apnea (rho = 0.27; p = 0.001), and frailty. Conversely, no correlation was found with excessive daytime sleepiness (rho = 0.05; p = 0.590). Also, the poor sleep quality and the risk of obstructive sleep apnea explain 14 % of the risk of frailty in the population of community-dwelling older adults (r2 = 0.14; p = 0.04). CONCLUSION: This study reveals a modest risk of frailty and impairment with sleep quality and the risk of obstructive sleep apnea, but not with excessive daytime sleepiness in community-dwelling older adults.

Emergence of different dimensions of sleepiness in a general population sample: An EPISONO study.

INTRODUCTION: Recent evidence supports the idea that sleepiness has several dimensions, comprising psychophysiological phenomena, such as sleep propensity and sleepiness perception. The Epworth Sleepiness Scale (ESS) is among one of the most used sleepiness assessment tools, but recent data suggest that it might not detect problematic impairments in sleep health. More research is warranted investigating sleepiness dimensions with large sample sizes, using both objective and subjective methods of analyzing sleep. METHODS: We used data from the Epidemiological Sleep Study (EPISONO), a major study carried out in Brazil using a representative sample of 1042 participants of the general population of Sao Paulo city, who completed questionnaires and underwent type I polysomnography. Sleepiness was measured by the ESS (sleep propensity) and the UNIFESP Sleep Questionnaire, which asked about the frequency of feeling sleepy during the day (sleepiness perception). The participants were distributed into 4 groups in respect of excessive daytime sleepiness (EDS) according to the following criteria: 1) having an ESS score >10 (ESS group). 2) feeling sleepy ≥3 times per week (Frequent EDS group). 3) the combined criteria (Combined EDS group). 4) having no evidence of EDS (no EDS group). The UNIFESP Sleep Questionnaire was used to obtain self-reported sleep duration, sleep debt, and sleep duration variability. Participants also completed the Pittsburgh Sleep Quality Index, the Insomnia Severity Index, and a pre-polysomnography sleep questionnaire. RESULTS: After removing participants with missing data, there were 620 participants with no EDS, 255 individuals in the ESS group, 68 in the Frequent EDS group, and 73 in the Combined EDS group. Compared to the no EDS group, the ESS and Combined EDS groups had significantly increased sleep efficiency, diminished sleep latency, wake after sleep onset, and self-reported weekly sleep duration. The Frequent and Combined EDS groups had significantly higher scores in the Insomnia Severity Index and Pittsburgh Sleep Quality Index. All EDS groups had an increased likelihood of nonrestorative sleep. EDS frequency and the ESS scores were significantly correlated. CONCLUSIONS: Participants with a high sleep propensity had a profile suggesting prior sleep deprivation, while high sleepiness perception was associated with impaired sleep quality. These findings indicated that, in the general population, these instruments evaluated separate sleepiness dimensions with different associations, highlighting that screening using a combination of instruments might be more effective in detecting impairments in sleep health.

Sleep in multiple sclerosis and neuromyelitis optica spectrum disorder-the SEMN study.

PURPOSE: This study aimed to (1) evaluate in patients with multiple sclerosis (MS) and neuromyelitis optica spectrum disorder (NMOSD) the presence of sleep disorders such as hypersomnia, fatigue, risk of apnea, and the presence of restless legs syndrome/Willis-Ekbom disease (RLS/WED); (2) evaluate quality of sleep in patients with MS and NMOSD; and (3) correlate them with clinical and imaging data. METHODS: The study was cross-sectional and was carried out in the sector of demyelinating diseases of the neurology service of HUGV-UFAM, Manaus, Brazil, from January 2017 to December 2020. RESULTS: Our sample consisted of 60 patients, 41 with MS and 19 with NMOSD. We found that patients with MS and NMOSD have poor sleep quality (65%) and hypersomnia (53% in MS; 47% in NMOSD), but low risk of apnea by STOP-BANG. The frequency of RLS/WE found was 14% in MS, and 5% in NMOSD. No correlation existed between sleep quality, number of relapses, and sleep quality for the Expanded Disability Status Scale (EDSS), i.e., fatigue/illness duration. CONCLUSION: Patients with MS and NMOSD have poor sleep quality, excessive sleepiness, and are at low risk for OSA, yet the frequency of RLS/WED is like that of the general population. There does not seem to be a significant difference between these sleep disorders in these demyelinating diseases of the CNS.

Effect of CPAP vs. mandibular advancement device for excessive daytime sleepiness, fatigue, mood, sustained attention, and quality of life in patients with mild OSA.

OBJECTIVE: This study's objective was to compare the best long-term treatment, mandibular advancement device (MAD) or continuous positive airway pressure (CPAP), for patients with mild obstructive sleep apnea (OSA) in improving excessive daytime sleepiness, fatigue, mood, sustained attention, and quality of life. METHODS: This study was a single-blind, parallel, randomized clinical trial with controls. The sample was composed of individuals between 18 and 65 years of age with a body mass index of < 35 kg/m2 and apnea/hypopnea index above five and less than 15. Participants were submitted to physical examination, polysomnography, and the following questionnaires: Pittsburgh Sleep Quality Index, Berlin Questionnaire, Epworth Sleepiness Scale, Stanford Sleepiness Scale, Karolinska Sleepiness Scale, Modified Fatigue Impact Scale, Functional Outcomes of Sleep Questionnaire, Beck Anxiety Inventory, and Beck Depression Inventory. They were also presented with the following tests: maintenance of wakefulness test and psychomotor vigilance task. RESULTS: Of 79 patients, 25 were in the MAD group, 31 in the CPAP group, and 23 in the control group. Polysomnographic parameters were best normalized with CPAP compared with MAD. Fatigue was improved in the MAD and CPAP groups, with no difference between these treatments. Quality of life was also improved with both treatments, but CPAP was superior to MAD. Daytime sleepiness, mood, and sustained attention showed no difference with the interventions. Greater adherence was obtained with MAD patients than with CPAP measured by hours of use. CONCLUSIONS: Treatment with CPAP was better at normalizing polysomnographic parameters and improving quality of life in patients with mild OSA. Both treatments improved fatigue with no difference between the two treatments. Neither treatment improved daytime sleepiness, mood or sustained attention. CLINICAL TRIALS DATABASE: NTC01461486.

Independent association between hypoxemia and night sweats in obstructive sleep apnea.

PURPOSE: To assess the relationship between hypoxemia during polysomnography (PSG) and patient-reported night sweats (NS). METHODS: This retrospective observational study included adult patients who completed a standardized sleep questionnaire and the Epworth Sleepiness Scale (ESS) before PSG. RESULTS: We included 1397 patients (41% women). The median age was 52 years, 80% had obstructive sleep apnea (OSA) defined as an apnea-hypopnea index (AHI) ≥ 5, and 35% were obese. A total of 245 patients (17.5%) reported NS. Their prevalence was higher among patients with OSA compared to controls (18.9% vs. 12.2%, p < 0.01). In the bivariate analysis, the variables associated with NS were BMI, AHI, hypoxemia (T90 ≥ 2.5% of total recording time plus minimum SO2 < 85%), frequent body movements or awakenings, nightmares, excessive daytime sleepiness (Epworth > 10), nocturia, cardiovascular events, and the use of sedatives or antidepressants. In the multivariate model, the independent predictors of NS were BMI (OR: 1.47, CI 95%: 1.07-2.01, p = 0.016), hypoxemia (OR: 1.87, CI 95%: 1.37-2.60, p = 0.0001), nightmares (OR: 2.60, CI 95%: 1.73-3.80, p < 0.0001), frequent body movements and awakenings (OR: 1.57, CI 95%: 1.16-2.11, p = 0.003 and OR: 1.54, CI 95%: 1.13-2.08, p = 0.005, respectively), and excessive daytime sleepiness (OR: 1.65, CI 95%: 1.24-2.20, p = 0.0007). CONCLUSIONS: In patients with OSA, night sweats were significantly and independently associated with a higher hypoxic burden.

Central hypersomnia and chronic insomnia: expanding the spectrum of sleep disorders in long COVID syndrome - a prospective cohort study.

INTRODUCTION: Long-onset COVID syndrome has been described in patients with COVID-19 infection with persistence of symptoms or development of sequelae beyond 4 weeks after the onset of acute symptoms, a medium- and long-term consequence of COVID-19. This syndrome can affect up to 32% of affected individuals, with symptoms of fatigue, dyspnea, chest pain, cognitive disorders, insomnia, and psychiatric disorders. The present study aimed to characterize and evaluate the prevalence of sleep symptoms in patients with long COVID syndrome. METHODOLOGY: A total of 207 patients with post-COVID symptoms were evaluated through clinical evaluation with a neurologist and specific exams in the subgroup complaining of excessive sleepiness. RESULTS: Among 189 patients included in the long COVID sample, 48 (25.3%) had sleep-related symptoms. Insomnia was reported by 42 patients (22.2%), and excessive sleepiness (ES) was reported by 6 patients (3.17%). Four patients with ES were evaluated with polysomnography and test, multiple sleep latencies test, and actigraphic data. Two patients had a diagnosis of central hypersomnia, and one had narcolepsy. A history of steroid use was related to sleep complaints (insomnia and excessive sleepiness), whereas depression was related to excessive sleepiness. We observed a high prevalence of cognitive complaints in these patients. CONCLUSION: Complaints related to sleep, such as insomnia and excessive sleepiness, seem to be part of the clinical post-acute syndrome (long COVID syndrome), composing part of its clinical spectrum, relating to some clinical data.

Instruments For Assessment Of Excessive Daytime Sleepiness In Brazilian Children And Adolescents: Systematic Review.

OBJECTIVE: To systematically review the literature on the instruments used to assess excessive daytime sleepiness (EDS) in Brazilian children and adolescents. DATA SOURCE: A systematic review of the literature was performed in the databases MEDLINE PubMed, Scopus, Web of Science, LILACS, Scielo and SPORTDiscus, with no time limit for searches. The eligibility criteria were studies published in English and Portuguese, original articles that used questionnaires to assess EDS and whose sample consisted of Brazilian children and/or adolescents. As search strategy, the following terms were combined with Boolean operators "OR" and/or "AND": drowsiness, disorders of excessive somnolence, excessive daytime sleepiness, day sleepiness, midday sleepiness, daytime sleepiness, adolescents, Brazil, Brazilian adolescents, and children. DATA SYNTHESIS: Sixteen articles were selected, in which nine different instruments were applied to 8.240 children and adolescents from the South, Southeast, Midwest and Northeast regions of Brazil. The mean of methodological quality of studies was 16.1±1.9 points. The instruments most frequently used were the Pediatric Daytime Sleepiness Scale (PDSS) and Karolinska Sleepiness Scale (KSS), but only PDSS was shown reliable to assess EDS in Brazilian children and adolescents. CONCLUSIONS: The PDSS was the only instrument considered reliable to assess EDS in Brazilian children and adolescents. Further research on EDS in children and adolescents are suggested to perform the validation of other instruments for Brazil and present internal consistency values.

Predictive Factors for Obstructive Sleep Apnea Diagnosis in Bariatric Surgery Candidates with or Without Chronic Insomnia Complaints.

OBJECTIVE: This study aims to evaluate the frequency of insomnia complaints in bariatric patients and to assess obstructive sleep apnea (OSA) predictors according to the presence or absence of chronic insomnia. METHODS: Insomnia was defined as the presence of at least one specific symptom: difficulty falling asleep, difficulty maintaining sleep, and/or waking up earlier than expected. Diagnosis of OSA was objectively obtained from in-laboratory polysomnography. Multivariate logistic regression analysis was used to assess OSA predictors. RESULTS: This cross-sectional study contains 1,737 bariatric surgery candidates: 59.6% without insomnia and 40.4% with insomnia. OSA prevalence was similar among participants with or without insomnia either for any OSA (p = 0.168) or for moderate-to-severe OSA (p = 0.185). Patients without insomnia showed a higher prevalence of severe OSA than those with insomnia (p = 0.005). In both cohorts, five parameters were independent OSA predictors: sex, age, body mass index (BMI), neck circumference (NC), and excessive daytime sleepiness (EDS). Male sex was the most important predictor, whether in individuals without insomnia (adjusted odds ratio [OR] ranging from 4.874 to 8.369) or in those with insomnia (adjusted OR ranging from 5.672 to 12.441). CONCLUSIONS: A considerable proportion of bariatric patients report insomnia complaints. The probability of suffering from OSA was similar among bariatric candidates with or without insomnia, except for severe OSA diagnosis. Sex, age, BMI, NC, and EDS were independent predictors for OSA diagnosis irrespective of insomnia symptoms, and male sex was the main predictor for OSA in bariatric individuals with or without insomnia.

Somnolencia diurna excesiva identificada con la escala de Epworth en gestantes que acuden a consulta prenatal ambulatoria / Excessive daytime sleepiness identified with the Epworth scale in pregnant women attending an outpatient prenatal consultation

INTRODUCCIÓN: Durante el embarazo se reportan a menudo trastornos del sueño, pero son poco explorados en el control prenatal. El objetivo fue estimar la frecuencia e identificar los factores asociados a somnolencia diurna excesiva (SDE) en gestantes de bajo riesgo obstétrico que acudieron a consulta prenatal. MÉTODO: Estudio transversal dentro del proyecto «Salud biopsicosocial en gestantes», aprobado por el comité de ética de la Clínica Santa Cruz de Bocagrande, Cartagena, Colombia. Se estudiaron mujeres con 12 o más semanas de gestación. Se aplicó un formulario que incluía las escalas de somnolencia diurna de Epworth (ESE), de estrés percibido de 10 ítems (EPP-10) y revisada de depresión del Centro de Estudios Epidemiológicos (CESD-R10). Se realizó regresión logística ajustada y no ajustada de SDE con las otras escalas y variables cualitativas. Se buscó correlación entre variables cuantitativas y la escala de Epworth. Se consideró significativo p < 0,05. RESULTADOS: Se estudiaron 683 mujeres de 28,3 ± 6,3 años y 31,5 ± 6,9 semanas de gestación. Puntuación en la escala de Epworth: 3,82 ± 3,45. En el 4,9% se identificó SDE: 50% leve, 32,2% moderada y 17,6% importante. No se observó en el primer trimestre de gestación y la frecuencia fue similar en los otros; la SDE importante solo se observó en el tercer trimestre. Depresión: odds ratio [OR]: 3,69, intervalo de confianza del 95% [IC95%]:1,83-7,43. Anemia: OR 3,10, IC95%:1,50-6,38. Fatiga: OR 3,22, IC95%:1,23-8,44. Nerviosismo: OR 2,49, IC95%:1,22-5,12. Estrés: OR: 2,38, IC95%:1,12-5,05. Gran paridad: OR: 2,64, IC95%: 1,01-6,89. Trabajar fuera de casa: OR: 2,33, IC95%: 1,05-5,15. Todas estas variables se asociaron con SDE. En el modelo ajustado, la anemia (OR: 3,05, IC95%: 1,44-6,45) y la depresión (OR: 2,72, IC95%: 1,26-5,85) conservaron la asociación. Se observó correlación positiva, despreciable y estadísticamente significativa, de la ESE con la CESD-R10 y con la EPP-10; y ausencia de correlación con la edad materna, la edad gestacional, el número de abortos y el número de cesáreas. CONCLUSIONES: En una de cada 20 gestantes de bajo riesgo obstétrico se identificó SDE, y varias situaciones biopsicosociales se asociaron con mayor presencia.

INTRODUCTION: Sleep disturbances are constantly reported during pregnancy, although they are not often taken care of in prenatal care. The aim was to estimate the regularity and identify factors associated with excessive daytime sleepiness (EDS) in pregnant women at low obstetric risk who attended prenatal consultation. METHOD: Cross-sectional study belonging to the project “Biopsychosocial health in pregnant women”, approved by the ethics committee of the Santa Cruz de Bocagrande Clinic, Cartagena, Colombia. Pregnant women with 12 or more weeks of gestation were studied. A form including: Epworth Daytime Sleepiness Scale, 10-item Perceived Stress and the Revised Depression Scale of the Centre for Epidemiological Studies was applied. Adjusted and unadjusted logistic regression was performed between EDS with the other scales and qualitative variables. In addition, correlation between quantitative variables and the Epworth scale. P<0.05 was significant. RESULTS: 683 pregnant women were studied, maternal age 28.3 ± 6.3 years and gestational age 31.5±6.9 weeks. Epworth Scale score: 3.82 ± 3.45. EDS was identified in 4.9%, 50% mild, 32.2% moderate and 17.6% severe. It was not observed in the first gestational trimester and the frequency was similar in the others, severe EDS only in the third trimester. Depression OR: 3.69 [95% CI: 1.83-7.43], anemia OR: 3.10 [95% CI: 1.50-6.38], fatigue OR: 3.22 [95% CI: 1.23-8.44], nervousness OR: 2.49 [95% CI: 1.22-5.12, stress OR: 2.38 [95% CI: 1.12-5.05], high parity OR: 2.64 [95% CI: 1.01-6.89] and working outside the home OR: 2.33 [95% CI: 1.05-5.15, were associated with EDS. In the adjusted model, anemia OR: 3.05 [95% CI: 1.44-6.45] and depression OR: 2.72 [95% CI: 1.26-5.85] retained the association. CONCLUSIONS: In one out of every twenty low obstetric risk pregnant women EDS was identified and several biopsychosocial situations were associated with more presence.

Factors associated with excessive daytime sleepiness among Brazilian adolescents.

This study aimed to verify the prevalence and factors associated with excessive daytime sleepiness (EDS) among adolescents. In all, 1.132 people participated. They were aged between 14 and 19 years, of both sexes and they came from a city in southern Brazil. Many socio-demographic variables were collected (sex, age group, socioeconomic status, period of study, year of school and work), also variables related to their health (level of physical activity, alcohol intake, smoking, misuse of medicines, stress control, duration of sleep, sedentary behavior and self-rated health) and EDS, through the Pediatric Daytime Sleepiness Scale (PDSS). The prevalence of EDS in general sample was 54.2% and average score in PDSS was 16.0 (5.7). Comparing results between both sexes, female sex presents the higher prevalence of EDS (64.3%) and greatest average PDSS score 17.5 (5.4) compared to male sex (35.7%) with 14.5 (5.6%) score (p < .001). In analysis of the prevalence ratio, using 15 as an EDS cut-off point, prevalence was 35% higher in the female sex (PR = 1.35 CI 95% 1.08-1.69, p = .010). In addition, adolescents which had lower self-rated health (PR = 1.24 CI 95% 1.01-1.52, p = .038), low stress control (PR = 1.28 CI 95% 1.05-1.57, p = .014) and short sleep duration (PR = 1.30 CI 95% 1.02-1.65, p = .029), presented higher prevalence of EDS. High prevalence of EDS was identified, being more common in young women. Adequate sleep, greater stress control and better health perception should be promoted among Brazilian adolescents.

Hypersomnia and Bipolar Disorder: A systematic review and meta-analysis of proportion.

BACKGROUND: Hypersomnia is a common problem amongst individuals with Bipolar Disorder (BD). The objective of this meta-analysis is to estimate the frequency of hypersomnia in individuals with BD, and identify associated factors METHODS: Our search focused on articles documenting the frequency of hypersomnia among individuals with BD indexed in PubMed database and in the Cochrane Library, following the recommendations from the Meta-Analysis Of Observational Studies in Epidemiology (MOOSE) Group. A meta-analysis of proportion was conducted; funnel plot and Egger's test were used for the assessment of publication bias. Subgroups analyses were performed in order to evaluate possible confounders and associated factors. RESULTS: We identified 10 studies, which included 1824 patients with BD. The overall estimate of the proportion of BD cases that reported hypersomnia was 29.9% [95% confidence interval (CI): 25.8 - 34.1%, I2 = 59.2%; p < .05]. The funnel plot and the Egger's test suggest a low risk of publication bias (p = .527). The polarity of mood state, Bipolar Disorder type, use of medication, age, diagnostic criteria and hypersomnia criteria were not significantly related to hypersomnia. LIMITATIONS: There is a possibility that smaller cross-sectional studies were not included. The high heterogeneity between studies is frequent in meta-analysis of both interventional and observational studies. Hypersomnia was not the primary outcome in some of the included studies. CONCLUSIONS: To our knowledge, this is the first systematic review and meta-analysis of hypersomnia prevalence in patients with BD. Further studies focused on clinical correlates and implications for health outcomes in BD are warranted.

Factor structure of the Brazilian version of Pediatric Daytime Sleepiness Scale.

The present study aimed to analyze the construct validity of the Pediatric Daytime Sleepiness Scale (PDSS) for the evaluation of the daytime sleepiness construct in adolescents through confirmatory factorial analysis. The cross-sectional study was carried out with a sample of 773 adolescents aged 14 to 19 years, enrolled in the state schools of Paranaguá, Paraná, Brazil. We investigated the sex, age, school year, study shift, occupational status, socioeconomic level and daytime sleepiness. The PDSS questions were not normal (p <0.001) and the mean total score was 14.87 (5.62). With Schwarz's BIC adjustment indicators = 142,389 and Akaike's AIC = 105,389, the model reached the criteria of the global adjustment indicators of the model in the confirmatory analysis, in which RMSEA = 0.020; CFI = 0.986; TLI = 0.977; SRMR = 0.021, with 17 degrees of freedom, KMO = 0.8504 and Cronbach's Alpha = 0.737, with three correlations. We conclude that the construct validity of the PDSS remains valid and confirms its factor structure with only one factor. Thereby, it was verified that the operationalization of the construct sleepiness of adolescents through this scale is adequately conceptualized to the behavior of the age group.

Fatigue in Parkinson's disease: concepts and clinical approach.

Parkinson's disease (PD) is a progressive neurological disorder characterized by a large number of motor and non-motor features. Fatigue is one of the most common and most disabling symptoms among patients with PD, and it has a significant impact on their quality of life. Although fatigue has been recognized for a long time, its pathophysiology remains poorly understood, and there is no evidence to support any therapeutic approach in PD patients. Expert consensus on case definition and diagnostic criteria for PD-related fatigue have been recently published, and although they still need to be adequately validated, they provide a great step forward in the study of fatigue. The goal of this article is to provide relevant information for the identification and management of patients with fatigue.

Recognizable clinical subtypes of obstructive sleep apnea across international sleep centers: a cluster analysis.

Study Objectives: A recent study of patients with moderate-severe obstructive sleep apnea (OSA) in Iceland identified three clinical clusters based on symptoms and comorbidities. We sought to verify this finding in a new cohort in Iceland and examine the generalizability of OSA clusters in an international ethnically diverse cohort. Methods: Using data on 972 patients with moderate-severe OSA (apnea-hypopnea index [AHI] ≥ 15 events per hour) recruited from the Sleep Apnea Global Interdisciplinary Consortium (SAGIC), we performed a latent class analysis of 18 self-reported symptom variables, hypertension, cardiovascular disease, and diabetes. Results: The original OSA clusters of disturbed sleep, minimally symptomatic, and excessively sleepy replicated among 215 SAGIC patients from Iceland. These clusters also generalized to 757 patients from five other countries. The three clusters had similar average AHI values in both Iceland and the international samples, suggesting clusters are not driven by OSA severity; differences in age, gender, and body mass index were also generally small. Within the international sample, the three original clusters were expanded to five optimal clusters: three were similar to those in Iceland (labeled disturbed sleep, minimal symptoms, and upper airway symptoms with sleepiness) and two were new, less symptomatic clusters (labeled upper airway symptoms dominant and sleepiness dominant). The five clusters showed differences in demographics and AHI, although all were middle-aged (44.6-54.5 years), obese (30.6-35.9 kg/m2), and had severe OSA (42.0-51.4 events per hour) on average. Conclusions: Results confirm and extend previously identified clinical clusters in OSA. These clusters provide an opportunity for a more personalized approach to the management of OSA.

Proposal of cutoff points for pediatric daytime sleepiness scale to identify excessive daytime sleepiness.

The objective of the present study was to propose cutoff points for the Pediatric Daytime Sleepiness Scale (PDSS) through sensitivity and specificity analyses in order to identify excessive daytime sleepiness, considering parameters such as duration and quality of sleep, health perception, stress control and depressive moods (feelings of sadness) in adolescents. A total of 1,132 adolescents, aged 14-19 years old, of both sexes, from the public high school of São José - SC, answered the questionnaire with information on age, daytime sleepiness, sleep duration, health perception, stress management, depressive moods (feelings of sadness) and quality of sleep. The Receiver Operating Characteristic (ROC) curve was used to estimate cutoff points considering the sensitivity and specificity values ​​that best identify adolescents with excessive daytime sleepiness, using independent variables as a reference. The majority of the sample was female (54.2%), aged 14-16 years. The girls presented worse quality of sleep (66.4%), and the boys had a more positive perception of health (74.8%), better stress control (64.8%) and lower depressive moods (feelings of sadness) (63.3%). The largest area in the ROC curve was the one that considered sleep quality as a parameter in both sexes (area of the curve = 0.709 and 0.659, respectively, for boys and girls, p < 0.001). Considering sleep quality as a reference, the cutoff point for excessive daytime sleepiness was 15 points. The other parameters used were also significant (p < 0.005). Poor sleep quality was the parameter most strongly related to daytime sleepiness, and a cutoff of 15 points for the PDSS for both sexes should be used in the definition of excessive daytime sleepiness. For the other parameters, stress management, depressive mood (feelings of sadness) and health perception, different cutoff points are suggested for boys and girls.

Evaluación del riesgo de síndrome de apnea obstructiva del sueño y somnolencia diurna utilizando el cuestionario de Berlín y las escalas Sleep Apnea Clinical Score y Epworth en pacientes con ronquido habitual atendidos en la consulta ambulatoria / Risk assessment for Obstructive Sleep Apnea Syndrome and daytime sleepiness using Berlin questionnaire, and SACS and Epworth scales in outpatients with snoring attending consultation

Resumen Objetivos: Determinar la frecuencia de riesgo del Síndrome de Apnea Obstructiva del Sueño (SAOS) en pacientes atendidos en el consultorio externo de neumología de un hospital de referencia en Lima a través de los Cuestionarios de Berlín, Sleep Apnea Clinical Score (SACS) y la escala de Epworth. Métodos: Se realizó un estudio transversal en pacientes atendidos en los consultorios externos de neumología reclutando durante el período de enero a marzo de 2014 en forma prospectiva a aquellos pacientes que referían presentar ronquido habitual. Se determinó la frecuencia de riesgo de SAOS de acuerdo a cada una de las escalas evaluadas y sus factores asociados. Resultados: Se estudiaron 230 sujetos, 56,5% eran varones y el 43,5% mujeres, con una edad media de 50 ± 12 años. El 61,8%, 66,9% y 62,6% tenían riesgo moderado o alto para SAOS de acuerdo a las escalas de Epworth, SACS y Berlin respectivamente. El perímetro de cuello, circunferencia abdominal e índice de masa corporal fueron las características asociadas de manera más consistente con el riesgo de SAOS. La correlación entre las escalas de SACS y Berlin fue de 0,55, entre las escalas SACS y Epworth de 0,22 y entre Berlín y Epworth de 0,35 (p < 0,001 para todas las comparaciones). Conclusiones: El riesgo de SAOS y somnolencia diurna es elevado en pacientes roncadores atendidos en la consulta externa de neumología. Las escalas evaluadas presentan una correlación menor que lo esperada. Se requieren estudios a mayor escala y en población general que comparen el valor diagnóstico y pronóstico de estas escalas utilizando la polisomnografía como estándar de referencia.

Objectives: To determine the frequency of risk for the obstructive sleep apnea syndrome (OSA) through clinical predictors: Berlin Questionnaire, Sleep Apnea Clinical Score (SACS) and the degree of daytime sleepiness measured by Epworth scale. Material and Methods: A cross-sectional study was conducted among patients who reported snoring seen by pulmonology in the outpatient clinic between January and March 2014. Frequency of OSA was calculated according to the three clinical prediction rules. We also determine the characteristic associated with a high risk of OSA according to each prediction rule. Results: We recruited 230 participants, 56.5% were male, with a mean age of 50 ± 12 years. The risk of moderate or high risk for OSA was 61.8%, 66.9% and 62.6% according to Epworth somnolence scale, SACS and Berlin questionnaire, respectively. Neck circumference, abdominal circumference and body mass index were the characteristics more consistently associated with OSA risk. Correlation between SACS and Berlin prediction rules was 0.55, between SACS and Epworth scale was 0.22 and between Berlin and Epworth scale was 0.35 (p < 0.001 for all comparisons). Conclusions: There is a high risk for OSA among snoring patients attending respiratory outpatient clinic. The correlation between prediction rules evaluated was lower than expected. Larger studies in general populations using polysomnography as a reference standard are needed to clarify the diagnostic and prognostic value of OSA prediction rules.

ANALYSIS OF DAYTIME SLEEPINIESS IN ADOLESCENTS BY THE PEDIATRIC DAYTIME SLEEPINESS SCALE: A SYSTEMATIC REVIEW. / ANÁLISE DA SONOLÊNCIA DIURNA EM ADOLESCENTES POR MEIO DA PEDIATRIC DAYTIME SLEEPINESS SCALE: REVISÃO SISTEMÁTICA.

OBJECTIVE: To systematically review the use of the Pediatric Daytime Sleepiness Scale (PDSS) in the analysis of daytime sleepiness in children and adolescents. DATA SOURCE: The electronic databases PubMed and SciELO were consulted between 2003 and 2015. As inclusion criterion, studies were considered in English, Spanish and Portuguese, original articles of any type of design, articles with a sample of children and/or adolescents, articles that used the PDSS. Duplicate articles, articles with no relation to the theme, articles with another investigated population, and articles that the parents answered the instrument for their children were excluded. To find the material with these features, the terms "Daytime sleepiness" AND "adolescents" and "Daytime sleepiness" AND "children" were used in the searches. In addition, the descriptor "Pediatric Daytime Sleepiness Scale" was used to filter more specifically. DATA SYNTHESIS: Initially, 986 studies related to daytime sleepiness were identified. Considering the inclusion criteria, we analyzed 26 studies composed of 18,458 subjects aged 0 to 37 years. The diurnal sleepiness score ranged from 6.7±0.6 to 25.7±0.6 points. In general, all included studies investigated other sleep variables in addition to daytime sleepiness, such as: sleep duration, sleep quality, sleep hygiene or sleep disorders (narcolepsy and cataplexy), respiratory disorders, neurological and developmental disorders. CONCLUSIONS: There was a moderate use of PDSS to evaluate daytime sleepiness. This instrument allows the monitoring of factors that influence excessive daytime sleepiness in children and adolescents.

OBJETIVO: Revisar de modo sistemático a utilização da Pediatric Daytime Sleepiness Scale (PDSS) na análise da sonolência diurna em crianças e adolescentes. FONTES DE DADOS: Foram consultadas as bases de dados eletrônicas PubMed e SciELO, no período delimitado entre 2003 e 2015. Como critério de inclusão, foram considerados estudos em inglês, espanhol e português; artigos originais de qualquer tipo de escopo, com amostra de crianças e/ou adolescentes e que utilizaram a PDSS. Foram excluídos artigos duplicados, sem relação com o tema, com outra população investigada, bem como aqueles em que os pais responderam o instrumento pelos seus filhos. Para encontrar o material dentro desses critérios, foram utilizados nas buscas os seguintes termos: "Daytime sleepiness" AND "adolescents" e "Day time sleepiness" AND "children". Além disso, utilizou-se o descritor "Pediatric Daytime Sleepiness Scale" para fazer uma filtragem mais específica. SÍNTESE DOS DADOS: Inicialmente, identificaram-se 986 pesquisas relacionadas à sonolência diurna. Considerando os critérios de inclusão, foram analisados 26 estudos compostos por 18.458 sujeitos com idades de 0 a 37 anos que responderam à PDSS. A pontuação da escala da sonolência diurna variou de 6,7±0,6 a 25,7±4. Em geral, todos os estudos incluídos investigaram, além da sonolência diurna, outras variáveis do sono, como: duração, qualidade, higiene ou distúrbios do sono (narcolepsia e cataplexia), patologias respiratórias, neurológicas e do desenvolvimento. CONCLUSÕES: Verificou-se moderada utilização da PDSS para avaliar a sonolência diurna. Esse instrumento permite o acompanhamento de fatores que influenciam a sonolência diurna excessiva em crianças e adolescentes.

Análise da sonolência diurna em adolescentes por meio da pediatric daytime sleepiness scale: revisão sistemática / Analysis of daytime sleepiniess in adolescents by the pediatric daytime sleepiness scale: a systematic review

RESUMO Objetivo: Revisar de modo sistemático a utilização da Pediatric Daytime Sleepiness Scale (PDSS) na análise da sonolência diurna em crianças e adolescentes. Fontes de dados: Foram consultadas as bases de dados eletrônicas PubMed e SciELO, no período delimitado entre 2003 e 2015. Como critério de inclusão, foram considerados estudos em inglês, espanhol e português; artigos originais de qualquer tipo de escopo, com amostra de crianças e/ou adolescentes e que utilizaram a PDSS. Foram excluídos artigos duplicados, sem relação com o tema, com outra população investigada, bem como aqueles em que os pais responderam o instrumento pelos seus filhos. Para encontrar o material dentro desses critérios, foram utilizados nas buscas os seguintes termos: "Daytime sleepiness" AND "adolescents" e "Day time sleepiness" AND "children". Além disso, utilizou-se o descritor "Pediatric Daytime Sleepiness Scale" para fazer uma filtragem mais específica. Síntese dos dados: Inicialmente, identificaram-se 986 pesquisas relacionadas à sonolência diurna. Considerando os critérios de inclusão, foram analisados 26 estudos compostos por 18.458 sujeitos com idades de 0 a 37 anos que responderam à PDSS. A pontuação da escala da sonolência diurna variou de 6,7±0,6 a 25,7±4. Em geral, todos os estudos incluídos investigaram, além da sonolência diurna, outras variáveis do sono, como: duração, qualidade, higiene ou distúrbios do sono (narcolepsia e cataplexia), patologias respiratórias, neurológicas e do desenvolvimento. Conclusões: Verificou-se moderada utilização da PDSS para avaliar a sonolência diurna. Esse instrumento permite o acompanhamento de fatores que influenciam a sonolência diurna excessiva em crianças e adolescentes.

ABSTRACT Objective: To systematically review the use of the Pediatric Daytime Sleepiness Scale (PDSS) in the analysis of daytime sleepiness in children and adolescents. Data source: The electronic databases PubMed and SciELO were consulted between 2003 and 2015. As inclusion criterion, studies were considered in English, Spanish and Portuguese, original articles of any type of design, articles with a sample of children and/or adolescents, articles that used the PDSS. Duplicate articles, articles with no relation to the theme, articles with another investigated population, and articles that the parents answered the instrument for their children were excluded. To find the material with these features, the terms "Daytime sleepiness" AND "adolescents" and "Daytime sleepiness" AND "children" were used in the searches. In addition, the descriptor "Pediatric Daytime Sleepiness Scale" was used to filter more specifically. Data synthesis: Initially, 986 studies related to daytime sleepiness were identified. Considering the inclusion criteria, we analyzed 26 studies composed of 18,458 subjects aged 0 to 37 years. The diurnal sleepiness score ranged from 6.7±0.6 to 25.7±0.6 points. In general, all included studies investigated other sleep variables in addition to daytime sleepiness, such as: sleep duration, sleep quality, sleep hygiene or sleep disorders (narcolepsy and cataplexy), respiratory disorders, neurological and developmental disorders. Conclusions: There was a moderate use of PDSS to evaluate daytime sleepiness. This instrument allows the monitoring of factors that influence excessive daytime sleepiness in children and adolescents.