Prevalence Of Obstructive Sleep Apnea Research Articles

The prevalence of Obstructive Sleep Apnea in Gestational Hypertension: a systematic review

The prevalence of Obstructive Sleep Apnea in Gestational Hypertension: a systematic review

Prevalence of obstructive sleep apnea among Southern Indian pregnant women attending antenatal care

Background: Physiological and hormonal changes during pregnancy can alter the sleep patterns of the pregnant women and were said to be precursor for the development of obstructive sleep apnea (OSA) and complication of pre-existing OSA. Developing country like India has no health cost distribution for the treatment, as this condition’s treatment trends absorbs 65–82% of all health cost. There is oblivious state among clinicians and patients, self-reporting of the symptoms are poor which, in turn, results to upshot underdiagnoses of OSA among southern Indian population. Aims and Objectives: The aim of the study is to screen the prevalence of OSA among the southern Indian pregnant women attending antenatal care and to evaluate its predisposing factors. Materials and Methods: We enrolled 305 pregnant women according to our study selection criteria, attended antenatal care at ACS medical college and hospitals from Chennai. On face-to-face basis, berlin questionnaire screening was done. With a brief interview, sociodemographic details, medical records and laboratory parameters were obtained. To cluster the risk of OSA prevalence, percentage was estimated using frequency distribution. Chi-square analysis was done to obtain significant relationship between contributing factors and OSA symptoms. Statistical testing was done with SPSS software version 21. Results: Among 305 pregnant women, 31.8% (97) were shown to have high-risk OSA and 68.2% (208) low-risk OSA. Across the trimester, high-risk OSA were noted among 8.2% (25), 11.1% (34), and 15.4% (48) at first, second, and third trimester, respectively. Age, body mass index, occupation, neck circumference, multiple pregnancy, and presence of conditions such as gestational hypertension, chronic hypertension, adenoids, mallampatti grade, nasal congestion, and family history of OSA can be the predisposing factors which could influence the OSA symptoms. Conclusion: The future investigations should rely on the analysis of the fetal outcomes after proper diagnosis of OSA. Furthermore, independent predictive values of physical signs, history, risk factors, and mechanisms behind the progression of OSA should be studied well. Region and area specific difference of risk of OSA to identify disparities and to promote decentralization of sleep care could be done.

A sex-stratified nationwide study on the prevalence and clinical phenotypes of obstructive sleep apnea in Iran

A sex-stratified nationwide study on the prevalence and clinical phenotypes of obstructive sleep apnea in Iran

The relationship between obstructive sleep apnea and visual hallucinations in PD patients: a polysomnography study.

Parkinson's disease (PD) patients frequently experience visual hallucinations (VHs) and obstructive sleep apnea (OSA). The aim of this study was to describe the prevalence and clinical correlates of VHs and OSA in the Chinese population with PD. A sample of 489 PD patients was recruited for the present study. Patients were categorized as having formed VHs (FVHs) or minor VHs (MVHs) or as non-hallucinators (NVHs) according to the Unified Parkinson's Disease Rating Scale (UPDRS) and an initial questionnaire. Polysomnography (PSG) was used for objective assessment of sleep. VHs were observed in 143 (29.2%) patients. Among them, 75 of the hallucinators experienced MVHs, and 68 experienced FVHs. The disease duration, UPDRS Part III score, Hoehn and Yahr (H-Y) stage, Pittsburgh Sleep Quality Index (PSQI) score and rapid eye movement (REM) sleep behavior disorder (RBD) score of hallucinators were significantly greater than those of non-hallucinators (P < 0.05). We also observed OSA in 38.7, 54.7, and 63.3% of the NVH, MVH, and FVH groups, respectively. PSG showed that the VH groups had a lower total sleep time, lower sleep efficiency, higher arousal index, lower sleep latency, lower N1%, higher apnea-hypopnea index (AHI), higher average duration of apnea, higher respiratory-related arousal (RRA), and lower values of the lowest O2 and mean O2. The forward binary logistic regression model showed that AHI, N1%, RRA and lowest O2 were independently associated with VHs in PD patients. Our results confirm the high prevalence of VHs and OSA as well as their relationship in patients with PD.

Prevalence of Sleep Disruption and Obstructive Sleep Apnea in Children with Cerebral Palsy Using Diagnostic Polysomnography

Prevalence of Sleep Disruption and Obstructive Sleep Apnea in Children with Cerebral Palsy Using Diagnostic Polysomnography

Worldwide Prevalence of obstructive sleep apnea among pediatrics: A Systematic Review and Meta-Analysis

Our objective was to ascertain the global prevalence of obstructive sleep apnea in the pediatric population. We conducted a comprehensive and methodical search and assessment of published papers regarding the occurrence of obstructive sleep apnea in pediatric populations. We have selected reliable databases for biological literature, such as PubMed, Medline, Web of Science, and Google Scholar, as well as local resources. For this search, we utilized terms such as \&amp;quot;Obstructive Sleep Apnea,\&amp;quot; \&amp;quot;Sleep Apnea,\&amp;quot; and \&amp;quot;Sleep apnea prevalence\&amp;quot; in different combinations. We have discovered a total of 76 studies that are relevant to our research. However, only 11 of these studies have met the criteria required for analysis. The prevalence of obstructive sleep apnea was estimated to be 3.5% (95% CI 3.3%-3.7%) based on pooled data. However, the occurrence of obstructive sleep apnea differed in each study. Statistical heterogeneity was observed with a high degree of certainty (I2=0.99; P

Risk Assessment of Obstructive Sleep Apnoea Symptoms and Its Correlation with Oral Manifestations: A Cross-sectional Study

Introduction: Obstructive Sleep Apnoea (OSA) is the most common sleep-related breathing disorder seen in all age groups. The aetiology is multifactorial, including factors such as obesity, aging, stress, and a sedentary lifestyle. Poor knowledge about diagnostic options, management, and consequences of improper treatment may contribute to morbidity and mortality. Berlin Questionnaires (BQ) are simple, low-cost, non-invasive tools that can be used to assess the risk of OSA. Screening subjects using questionnaires and oral examinations for a multidisciplinary approach to treat OSA is essential. Aim: To assess the risk of OSA symptoms and their association with oral manifestations among students. Materials and Methods: This cross-sectional study was conducted among medical students aged between 18 and 24 years. Three hundred medical students (171 males, 129 females) willing to participate in the study were included. Responses to the Berlin and oral health questionnaires were collected, and oral examinations were performed. Statistical analysis was conducted using Epi Info software. Kruskal-Wallis H test and one-way Analysis Of Variance (ANOVA) were carried out to evaluate significance in different groups and to examine associations between OSA, oral health, and other variables. Results: The collected data were statistically analysed. In the present study, 35 subjects (11.67%) were classified as highrisk and 265 subjects (88.33%) as low-risk by the BQ. The prevalence of OSA in the present study was 12.87% in males and 10.08% in females. High-risk subjects were educated, motivated, and referred for confirmatory diagnostic tests and early treatment. Conclusion: The prevalence of OSA in the present study was 12.87% in males and 10.08% in females. Emphasis should be placed on highlighting the clinical aspects related to OSA and its relation to oral health. There is a great need to educate and motivate dental and medical students and professionals about OSA by conducting health education programs.

The prevalence of obstructive sleep apnea syndrome after COVID-19 infection.

Obstructive sleep apnea is a well-known risk factor regarding the severity of COVID-19 infection. However, to date, relatively little research performed on the prevalence of obstructive sleep apnea in COVID-19 survivors. The purpose of this study was to investigate the risk of obstructive sleep apnea after COVID-19 infection. This study was based on data collected from the US Collaborative Network in TriNetX. From January 1, 2020 to June 30, 2022, participants who underwent the SARS-CoV-2 test were included in the study. Based on their positive or negative results of the COVID-19 test results (the polymerase chain reaction [PCR] test), we divided the study population into two groups. The duration of follow-up began when the PCR test was administered and continued for 12 months. Hazard ratios (HRs) and 95% confidence intervals (CIs) for newly recorded COVID-19 positive subjects for obstructive sleep apnea were calculated using the Cox proportional hazards model and compared to those without COVID-19 infection. Subgroup analyses were performed for the age, sex, and race, groups. The COVID-19 group was associated with an increased risk of obstructive sleep apnea, at both 3 months of follow-up (HR: 1.51, 95% CI: 1.48-1.54), and 1 year of follow-up (HR: 1.57, 95% CI: 1.55-1.60). Kaplan-Meier curves regarding the risk of obstructive sleep apnea revealed a significant difference of probability between the two cohorts in the follow-up periods of 3 months and 1 year (Log-Rank test, p < 0.001). The risks of obstructive sleep apnea among COVID-19 patients were significant in the less than 65 year of age group (HR: 1.50, 95% CI: 1.47-1.52), as well as in the group older than or equal to 65 years (HR:1.69, 95% CI: 1.64-1.73). Furthermore, the risks of obstructive sleep apnea were evident in both the male and female COVID-19 groups. Compared to the control group, the risks of obstructive sleep apnea in the COVID-19 participants increased in the subgroups of White (HR: 1.62, 95% CI: 1.59-1.64), Blacks/African Americans (HR: 1.50, 95% CI: 1.45-1.55), Asian (HR: 1.46, 95% CI: 1.32-1.62) and American Indian/Alaska Native (HR: 1.36, 95% CI: 1.07-1.74). In conclusion, the incidence of new diagnosis obstructive sleep apnea could be substantially higher after COVID-19 infection than non-COVID-19 comparison group. Physicians should evaluate obstructive sleep apnea in patients after COVID-19 infection to help prevent future long-term adverse effects from occurring in the future, including cardiovascular and neurovascular disease.

Breathing patterns during sleep and their relationship with FEV1 in pediatric patients with cystic fibrosis residing at high altitude.

Sleep-disordered breathing (SDB) and gas exchange disorders are common in patients with cystic fibrosis (CF). Currently, the impact of the disease on sleep patterns in patients living at high altitude and the relationship of these patterns to lung function are largely unknown. The aim of this study was to determine the frequency of SDB in children with CF aged 6-18 years and the relationship between SDB and lung function (FEV1). This is an analytical cross-sectional study of children aged 6-18 years diagnosed with CF. Spirometry before and after bronchodilators and polysomnography with capnography were performed. Descriptive analysis of qualitative and continuous variables was performed. Spearman's correlation coefficient was used to determine the correlation between polysomnogram and lung function (FEV1). Twenty-four patients with CF were included. The mean age was 10.5 ± 3.1 years and 62.5% were male. Nine children had bronchiectasis on chest CT. The median absolute baseline FEV1 was 1,880 (1,355-2,325) ml and 98% (83%-110%) of predicted value. No significant difference in FEV1% was observed between subjects with obstructive sleep apnea (OSA) and those without OSA (P = 0.56). The prevalence of OSA was 66.7% in children younger than 13 years and 40% in children older than 13 years. The Spearman correlation coefficient between FEV1 and percentage of total sleep time with saturation less than 90% (T90) was rho -0.52 (p-value = 0.018), and between FEV1 and percentage of total sleep time with saturation less than 85% (T85) was statistically significant with rho -0.45 (p-value = 0.041). A positive correlation was observed between FEV1 and SpO2 during sleep with rho 0.53 and a statistically significant p-value (0.014). A high prevalence of sleep apnea was found in children with CF living at high altitude, with a negative correlation between FEV1 and T90 and T85 oxygenation indices, and a positive correlation between FEV1 and SpO2 during sleep.

High prevalence of obstructive sleep apnea in a surgical aortic valve replacement cohort: an observational study.

A high prevalence of sleep apnea has been reported among transcatheter aortic valve replacement (AVR) patients; however, the prevalence of sleep apnea in the younger and relatively healthier population of surgical AVR (SAVR) patients is unknown. We assessed the prevalence of sleep apnea and overall sleep quality in patients having SAVR. Participants aged 50-89 were eligible for recruitment. All participants completed type II HST before SAVR. Sleep apnea was defined as an apnea-hypopnea index (AHI) ≥ 5 events/hour. The current use of positive airway pressure was exclusionary. The 46 participants (32 males/14 females) had a mean age of 66.6 years, body mass index of 30, AHI of 23.5, and obstructive AHI of 22.0. Only four participants had a prior sleep apnea diagnosis, yet all but one had sleep apnea on type II sleep testing. Two-thirds of sleep apnea was moderate or severe (AHI ≥ 15). A quarter of respiratory events were defined by arousals without desaturations. Whereas most sleep parameters resembled those of similarly aged community cohorts, mean percentage of N3 was reduced, accounting for only 3.8% of total sleep time. Type II home sleep testing (HST) revealed a 97.8% prevalence of sleep apnea in this sample, most of which was undiagnosed obstructive sleep apnea. Roughly two-thirds of sleep apnea was moderate or severe. Such a high impact of obstructive sleep apnea among patients with severe aortic valve disease deserves further investigation on potential underlying mechanisms and clinical implications.

Evaluating Positional Obstructive Sleep Apnea in Children: Prevalence, Characteristics, and Risk Factors.

This study investigates the prevalence, risk factors, and clinical characteristics of positional obstructive sleep apnea (POSA) among pediatric patients diagnosed with obstructive sleep apnea (OSA). A total of 1,236 children aged 0 to 17 years who underwent nocturnal polysomnography (PSG) and completed the Sleep Questionnaire were included. After excluding those with an AHI <1, neurological or muscular disorders, or insufficient sleep time in specific positions, 908 patients remained: 158 with POSA and 750 with non-positional OSA (NPOSA). Propensity score matching (PSM) was applied at a 1:2 ratio, resulting in a final sample of 153 POSA and 306 NPOSA patients. Data analyses were performed using R software (version 4.2.3). The prevalence of POSA was 12.8%. After PSM, patients with POSA had a lower overall AHI (8.66 vs 10.30), REM-AHI (14.30 vs 17.40), and NREM-AHI (7.43 vs 8.77) compared to those with NPOSA. POSA patients also had a shorter total sleep time (411 vs 427minutes), spent less time in the supine position (168 vs 225minutes), and more time in non-supine positions (241 vs 202minutes) than NPOSA patients. Additionally, while the supine AHI was higher in POSA patients (15.60 vs 10.30), the non-supine AHI was lower (5.00 vs 11.00) compared to NPOSA patients. The minimum oxygen saturation was slightly higher in POSA patients (0.88 vs 0.87). All differences were statistically significant (P < 0.05). Risk factors for POSA included mild OSA, allergic rhinitis, non-allergic rhinitis, and obesity. The prevalence of POSA in children is lower than in adults, and its severity is less than that of NPOSA. Compared to NPOSA patients, POSA patients had significantly higher AHI during supine sleep and lower AHI during non-supine sleep. POSA patients also spent more time in non-supine positions, suggesting that avoiding supine sleep may help reduce apnea events. These findings highlight the importance of monitoring and managing sleep posture in POSA patients.

Validation of Trøndelag Apnoea Score Proxy for Obstructive Sleep Apnoea in the General Population of Norway: The HUNT Study.

The aim was to validate a new seven-item "TASC" (Trøndelag Apnoea Score) proxy for obstructive sleep apnoea (OSA) against polysomnography in the general population. Objectives included validation against different polysomnographic criteria, stratification by age and gender, and estimation of OSA prevalence. From the fourth wave of the Trøndelag Health Study (HUNT4), 1,201 participants were randomly invited to a substudy focusing on sleep and headaches, of whom 232 accepted and 84 (64% women, mean age 55.0 years, and standard deviation 11.5 years) underwent polysomnography. The TASC proxy sums seven binary items for snoring, observed breathing pauses, restricted daytime activities, hypertension, body mass index (≥30 kg/m2), age (≥50 years), and gender (male). A single night of ambulatory (home) polysomnography was analysed using both the recommended and optional hypopnoea criteria of the American Academy of Sleep Medicine (AASM). We found 65% sensitivity and 87% specificity (Cohen's κ = 0.53, 95% confidence interval 0.34-0.72) for TASC ≥ 3 against AHI ≥ 15 (recommended AASM criteria). Validity was similar against AHI ≥ 30 but lower against AHI ≥ 5 and against the optional AASM criteria. Sensitivity and overall validity were higher among men and those above 50 years of age. The prevalence of an apnoea-hypopnoea index (AHI) of at least 5, 15, or 30 using the recommended (and optional) AASM criteria was 73% (46%), 37% (18%), or 15% (5%). A seven-item TASC proxy for OSA showed good validity and may be useful in screening and epidemiological settings. Sensitivity, specificity, and validity vary considerably by cut-off, by polysomnographic scoring criteria, and by gender and age strata.

High Risk of Obstructive Sleep Apnea Among Hypertensive Patients at a Selected Tertiary Care Hospital

Introduction: Obstructive sleep apnea (OSA) is a sleep-related breathing disorder characterized by partial or complete obstruction of the upper airway, which causes desaturations and arousal. Various studies have shown that OSA is a major modifiable risk factor for hypertension. Untreated OSA is increasingly associated with cardiovascular and neurocognitive sequela. Thus, our study aims to determine the high-risk of obstructive sleep apnea among hypertensive patients at a tertiary care hospital in Malaysia. Methods: A cross-sectional study was conducted among hypertensive patients at a tertiary hospital in Malaysia. A validated Malay version of the Berlin Questionnaire was utilized along with other questions on sociodemographic characteristics and diabetes mellitus. Results: A total of 161 respondents were involved in the study. The mean age was 48.35 years and among these 75% were males and 25 % were females. The majority of respondents were of Malay ethnicity (78%), followed by Chinese (11%) and Indians (10%). Of these,18 % comprised of obese patients and 29.8% had diabetes mellitus. The prevalence of high-risk OSA among hypertensive patients was 18.0% (95% CI). High risk of OSA was found to be prevalent in the elderly age group (p&lt;0.001), female gender (p&lt;0.001), Indian ethnicity (p&lt;0.001) and among diabetes mellitus patients (p&lt;0.001). Conclusion: The study results illustrate the high risk of OSA among hypertensive patients with advancing age and diabetes mellitus. This study finding mandates these high-risk hypertensive patients should be screened for early diagnosis and timely treatment of OSA to prevent further cardiovascular risk, morbidity and mortality.

Obstructive Sleep Apnea In An Indian Population: A Cross Sectional Study

BACKGROUND: Obstructive sleep apnea (OSA) is a sleep-related breathing disorder, associated with impaired ventilation during sleep and disruption of sleep; which is defined on the basis of nocturnal and daytime symptoms as well as sleep study findings. It’s associated with certain risk factors, namely – obesity, male sex, advancing age, hypertension, chronic consumption of alcohol and sedatives, along with positive family history. Any unexplained systemic or pulmonary hypertension, new-onset arrhythmias, polycythemia, personality and mood changes (including depression, anxiety), or cognitive defects are often linked to sleep disturbances and OSA. AIMS: Consequently, this study had 2 primary aims that were intended to be achieved by certain objectives: To screen an apparently healthy adult Indian population for prevalence of OSA amidst them, by – assessing the cardinal predisposing factors;and appraising extent of daytime sleepiness, fatigue and sleep status of volunteers. To significantly curb the incidence of OSA, by – counselling affected individuals to remodel their modus vivendi, and creating awareness amongst general public. METHODS: Subsequent to procuring assent from the Institutional Ethics Committee, for this cross-sectional, time-based study (of 3 months), a multiple-choice questionnaire was responded by 1078 Indian adults. Considering the specific target population of each, this questionnaire was an amalgamation of the three standard, subjective, clinical tools, namely: Berlin Questionnaire (BQ), STOP-BANG Questionnaire (SBQ), Epworth Sleepiness Scale (ESS). Responses were thoroughly and discretely analyzed, using the elementary Microsoft 365 Excel, in tandem with IBM SPSS ver29. Suggested appropriate lifestyle changes to those seemingly affected with OSA, by reaching out through the affiliated email address (thesleepperils@gmail.com). OSA Awareness campaigns organized for the general public. RESULTS: According to the data collected (margin of error ±3% at 95% confidence interval), 11.78% and 5.75% of the participants were found highly vulnerable to OSA, using the BQ and SBQ tools, respectively. ESS depicted that more than one-fourth of the participants are susceptible to OSA. In congruence with similar studies conducted across the globe, this research has also concluded that males are significantly more prone to OSA than females. CONCLUSION: The public health impact of obstructive sleep apnea is escalating, particularly in developing countries like India, because of increasing urbanization leading to sedentary lifestyles, and its potential contribution to the worsening rates of cardiovascular disease, diabetes and other co-morbidities. Identifying and addressing lifestyle and behavioral factors as well as comorbidities that may be exacerbating OSA, by budding clinicians is a must for a comprehensive management of obstructive sleep apnea. Consequently, the ultimate aim of this study was to diagnose obstructive sleep apnea at an early stage; along with analyzing the national burden of the ailment.

Analysis of Obstructive Sleep Apnoea in Craniofacial Microsomia Based on Polysomnography

Objective This study aimed to investigate the prevalence of obstructive sleep apnoea (OSA) in patients with craniofacial microsomia (CFM) through polysomnography (PSG) and the relationship with the severity of CFM. Methods This study reviewed patients of CFM with pre-operative PSG data between January 2005 and September 2023. Patients were grouped according to the Pruzansky-Kaban classification. OSA was diagnosed and severity was assessed by the obstructive apnea-hypopnea index. The Pediatric Sleep Questionnaire was used to investigate OSA-related signs and symptoms. The χ 2 test and Fisher's exact test were used to compare between groups. Univariate logistic regression was used to identify risk factors associated with OSA. A p-value less than 0.05 was considered statistically significant. Results A total of 121 patients with CFM were included in the study with 3 bilateral and 118 unilateral patients. In total, 86 patients (71.07%) were diagnosed with OSA. The prevalence of OSA in type IIa, type IIb and type III was 72.97%, 78.33%, and 47.62%. There was no statistically significant difference in the prevalence of OSA between type IIa and type IIb ( p &gt; .05). The difference in the prevalence of OSA between type III and type II was statistically significant ( p &lt; .05). Snoring was the most common symptom among the patients of CFM with OSA. Conclusions Patients with CFM have a higher incidence of OSA based on PSG in type II and type III patients. The incidence of OSA did not correlate positively with the severity of CFM, with type III patients having certain particularities.

Primary aldosteronism and obstructive sleep apnea: A meta-analysis of prevalence and metabolic characteristics

BackgroundPrimary aldosteronism (PA) and obstructive sleep apnea (OSA) are both causes for resistant hypertension and contribute to adverse cardiovascular outcome. However, the association of these two disorders remains to be investigated. We conducted this meta-analysis to estimate the prevalence and metabolic characteristics of the coexistence of PA and OSA. MethodsThe databases of MEDLINE, EMBASE and Cochrane Reviews were searched for studies investigating the prevalence or clinical characteristics of PA and OSA until Jan 2023. Single proportions of PA and OSA were meta-analyzed for pooled prevalence and 95% confidence intervals (CIs). Odds ratios (ORs) and 95% CIs were calculated for the comparison of the prevalence. Mean differences (MDs) and 95% CIs were calculated for comparisons of the characteristics between patients with both OSA and PA and control groups. ResultsA total of 16 studies were included. The pooled prevalence of PA was 27% (95% CI = 24–29%) in all patients with OSA (n = 3498). The prevalence of PA in patients with OSA was significantly higher than that in the patients without OSA (OR = 2.03, 95% CI = 1.30, 3.16, p = 0.002). The pooled prevalence (95% CI) of OSA was 46% (39–54%) in patients with PA (n = 2335). Compared with the hypertensive patients without PA, the prevalence of OSA in the patients with PA was significantly higher (OR = 2.01, 95% CI = 1.37, 2.95, p < 0.001). Compared with the patients of control groups, the patients with both PA and OSA had higher blood pressure and body mass index (BMI). ConclusionScreening for the coexistence of PA and OSA was warranted.

A Correlational Study Elevated Risk of Cardiometabolic Illness and the Prevalence of Obstructive Sleep Apnea Among the Population of Tebing Tinggi, North Sumatra, Indonesia

A Correlational Study Elevated Risk of Cardiometabolic Illness and the Prevalence of Obstructive Sleep Apnea Among the Population of Tebing Tinggi, North Sumatra, Indonesia

Prevalence of Obstructive Sleep Apnea Using Home Sleep Test in Taiwan During the Coronavirus Disease Pandemic.

Obstructive sleep apnea syndrome (OSAS) is a common disorder associated with serious sequelae. The current gold standard diagnostic method, polysomnography, is costly and time consuming and requires patients to stay overnight at a facility. This study aimed to reveal the prevalence of OSAS in general adult population using a home sleep test (HST) during the coronavirus disease 2019 (COVID-19) pandemic. This prospective cohort study was conducted by the Department of Otolaryngology, Taipei City Hospital, Taipei, Taiwan, between January 2020 and December 2021. A total of 1372 patients aged 30-70 years completed an HST using a Type 3 portable sleep monitor (PM). The apnea-hypopnea index (AHI) was analyzed to assess the association of OSAS with age, body mass index (BMI), sex, Epworth Sleepiness Scale (ESS) and the Sleep Apnea Risk Assessment questionnaire (STOP-Bang questionnaire) rating. The mean age of the patients (782 men, 57%; 590 women, 43%) was 49.24 ± 11.04 years. OSAS was detected in 954 (69.5%) patients with 399 (29.1%) mild OSAS; 246 (17.9%) moderate OSAS; and 309 (22.5%) severe OSAS. Among these, the prevalence of moderate-to-severe OSAS was 143 (10.4%) in women and 412 (30.0%) in men. The mean age was the highest (51.29 ± 11.29) in the mild OSAS group and lowest (47.08 ± 10.87) in the healthy group. OSAS severity was greater with increasing BMI, 23.39 ± 3.44 in the healthy group and 29.29 ± 5.01 in the severe OSAS group. A positive correlation was also noted between the ESS/STOP-Bang questionnaire rating and OSAS severity. The prevalence of OSAS in Taiwan was 69.5% in our study. It showed strong evidence that OSAS has important public health consequences and PMs are simple, fast, feasible, and cost-effective tools for OSAS screening in the home environment, especially during the COVID-19 pandemic.

SEX EFFECTS ON THE QUALITY OF SLEEP IN DOWN SYNDROME

AbstractBackgroundSex differences in biological factors, such as sleep, might contribute to sex differences in dementia risk. Down’s syndrome (DS) is a genetically determined form of Alzheimer’s disease (AD), with disrupted sleep and a high prevalence of obstructive sleep apnea (OSA). However, sex differences in nocturnal sleep in adults with DS have not been yet investigated. Thus, we aimed to evaluate the sex effect on polysomnographic sleep measures in adults with DS.MethodCross‐sectional study of 187 adults with DS from the Down‐Alzheimer Barcelona Neuroimaging Initiative (DABNI) that underwent a nocturnal polysomnography study. Sleep macrostructure parameters of i)sleep continuity [Total sleep time(TST), Sleep efficiency(SE), Wake after sleep onset(WASO), Sleep latency and latency to REM sleep], ii) NREM (phase N1, N2, N3) and REM stages, in minutes and percentages, and iii) respiratory parameters to determine the presence of OSA were evaluated. Chi‐squared and Mann‐Whitney tests were used to test differences between categorical data, and continuous variables, respectively. To evaluate the sex effects on sleep parameters, we performed ANCOVAs using sleep measurements as dependent variables, the sex, presence of dementia, and OSA as fixed effects, and age as a covariate. Interactions between subjects effects were aso calculatedResultOur cohort includes 187 adults with DS (57,2% females and 42.8% males). OSA was present in 76,2% of the subjects, and 22% of the subjects had symptomatic AD (prodomal/demented) without significant differences in both prevalences between sexes(p = 0.23, p = 0.08 respectively) (table 1). Females presented significant longer TST, WASO, NREM (m), N2(m), N3(m), with higher SE and N3(%), and decreased N1(%) compare to males. These sex differences were maintained after age correction. Results remain essentially similar when including dementia and OSA in the statistical models. No significant interactions between sex and OSA and sex and dementia were observed(Table2).ConclusionAs in general euploid population, females with DS presented a better objective sleep quality with more deep sleep than men. Further work is needed to investigate how sex differences in sleep parameters can influence clinical and biomarker profiles of AD in adults with Down syndrome.

Association of tau burden with sleep disordered breathing in adults with Down syndrome

AbstractBackgroundAdults with Down syndrome (DS) overproduce the amyloid precursor protein and nearly all evidence clinical symptoms of Alzheimer’s Disease (AD) dementia in later life. Sleep disordered breathing, and specifically, obstructive sleep apnea (OSA), is common in adults with DS. OSA has been associated with risk of AD in adults without DS, and sleep disturbances may have a bidirectional relationship with AD pathology. We hypothesized that greater tau burden is associated with subsequent sleep disordered breathing in a time‐lagged design.MethodsEighty young adults with DS (37±8 yrs, 49% women, 94% cognitively‐stable/6% MCI‐DS) from the ABC‐DS study underwent tau PET ([18F]‐AV1451, Braak stage SUVRs) and were assessed 4±0.7 years after PET using WatchPAT home sleep testing. Sleep variables included oxygen desaturation index (ODI) and apnea‐hypopnea index (AHI). General linear models assessed tau burden on later sleep impairments. Models were run in the whole group and the cognitively‐stable group alone, with and without age adjustment. Analyses were run using overall sleep measures and those in REM and non‐REM (NREM) sleep separately.ResultsIn unadjusted models, greater tau in early, middle, and late Braak stages were associated with a higher ODI, while greater tau in middle Braak stages was associated with a higher AHI. In the cognitively‐stable group alone, greater tau in early and middle, but not late, Braak stages were associated with a higher ODI, while greater tau in middle Braak stages was associated with a higher AHI. Adjusting for age, greater tau in late Braak stages was associated with ODI in the whole group and the cognitively‐stable group alone. Associations for overall sleep measures were driven by NREM measures (Table 1).ConclusionIn adults with DS with a high prevalence of OSA, tau burden was associated with subsequent intermittent nocturnal hypoxemia as measured by the ODI during NREM sleep. These findings align with those in adults without DS, linking AD pathology, disturbed sleep, witnessed apneas, and nocturnal hypoxemia. Both longitudinal and randomized studies are required to clarify cause‐effect relationships, including the presence of mediating and/or moderating variables such as reduction in sleep depth or continuity.