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PloS One 2024Monitoring and improving the quality of sleep are crucial from a public health perspective. In this study, we propose a change-point detection method using diffusion...
Monitoring and improving the quality of sleep are crucial from a public health perspective. In this study, we propose a change-point detection method using diffusion maps for a more accurate detection of respiratory arrest points. Conventional change-point detection methods are limited when dealing with complex nonlinear data structures, and the proposed method overcomes these limitations. The proposed method embeds subsequence data in a low-dimensional space while considering the global and local structures of the data and uses the distance between the data as the score of the change point. Experiments using synthetic and real-world contact-free sensor data confirmed the superiority of the proposed method when dealing with noise, and it detected apnea events with greater accuracy than conventional methods. In addition to improving sleep monitoring, the proposed method can be applied in other fields, such as healthcare, manufacturing, and finance. This study will contribute to the development of advanced monitoring systems that adapt to diverse conditions while protecting privacy.
Topics: Humans; Sleep Apnea Syndromes; Polysomnography; Algorithms; Monitoring, Physiologic
PubMed: 38935677
DOI: 10.1371/journal.pone.0306139 -
Journal of Clinical Sleep Medicine :... Jun 2024Postoperative respiratory adverse events (PRAE) occurred more frequently in children having adenotonsillectomy than the general surgical population, and can require...
STUDY OBJECTIVES
Postoperative respiratory adverse events (PRAE) occurred more frequently in children having adenotonsillectomy than the general surgical population, and can require escalation of care. This study aims to assess the usefulness of post-induction fentanyl-test to predict PRAE in children with obstructive sleep apnea (OSA) after adenotonsillectomy.
METHODS
Two hundred and forty patients with OSA undergoing adenotonsillectomy were included in this study. The oxygen saturation during sleep was monitored the night before adenotonsillectomy. Fentanyl-test was conducted under spontaneous breath after anesthesia induction with sevoflurane. Fentanyl-induced reduction in respiratory rate (FRR) was defined as the percentage of reduction in respiratory rate after 1 mcg/kg fentanyl administration. PRAE in the post-anesthesia care unit (PACU) included both respiratory complications and medical interventions. Receiver operating characteristic (ROC) analysis was used to assess the usefulness of fentanyl-test in predicting PRAE.
RESULTS
Of the 240 children undergoing elective adenotonsillectomy, 38 children (16%) experienced PRAE in PACU. The areas under ROC curve for FRR and Nadir SpO were 0.756 and 0.692, respectively. FRR greater than 53% best predicted PRAE in PACU, with a sensitivity of 68% and a specificity of 72%. Patients with FRR > 53% exhibited a significantly longer duration of desaturation requiring supplementary oxygen than those with FRR ≦ 53% (p < 0.001).
CONCLUSIONS
We suggest that post-induction fentanyl-test is a feasible evaluation for children undergoing adenotonsillectomy to predict early PRAE, especially for those who have not undergone polysomnography.
CLINICAL TRIAL REGISTRATION
Registry: ClinicalTrials.gov; Name: Effects of Individualized Opioid Analgesia Versus Conventional Opioid Analgesia After Adenotonsillectomy in Children; URL: https://clinicaltrials.gov/study/NCT04527393; Identifier: NCT04527393.
PubMed: 38935059
DOI: 10.5664/jcsm.11262 -
Journal of Clinical Sleep Medicine :... Jun 2024Hypoglossal nerve stimulation (HGNS) therapy has historically had strict eligibility requirements including a body mass index (BMI) < 32 kg/m. However, recent Food and...
STUDY OBJECTIVES
Hypoglossal nerve stimulation (HGNS) therapy has historically had strict eligibility requirements including a body mass index (BMI) < 32 kg/m. However, recent Food and Drug Administration approval expanded indications to a BMI < 40 kg/m. There is a wide variability in body fat distribution. This study sought to determine if neck circumference is a better surrogate predictive variable for HGNS outcomes than BMI.
METHODS
A retrospective chart review was conducted at a tertiary care center on adults who underwent HGNS implantation by a single surgeon from March 2017 to October 2021. Baseline demographic data including neck circumference, diagnostic sleep studies and post-implantation HGNS titration studies were collected. Linear regression and Spearman's Correlation Coefficient (SCC) analysis were utilized to compare neck circumference (NC), percentage of predicted neck circumference (PPNC) and BMI with the apnea-hypopnea index at effective voltage (AHI-v).
RESULTS
This study included 43 patients who were middle aged (61.1 years), predominantly male (76.7%), with severe obstructive sleep apnea (median AHI 35) and mean neck circumference of 15.3 inches. Utilizing the NC and PPNC, positive correlations with AHI-v were observed (p = 0.0033, SCC = .438, and p = 0.0029, SCC = .444). While controlling for BMI, a 1-inch increase in neck circumference was associated with a 35% increase in AHI-v (p = 0.0411).
CONCLUSIONS
A larger neck circumference was independently associated with worse HGNS outcomes. Further research is needed to support and confirm these findings, particularly across sexes.
PubMed: 38935051
DOI: 10.5664/jcsm.11260 -
Journal of Clinical Sleep Medicine :... Jun 2024There is limited knowledge regarding the progression or consistency of symptoms in OSA over time. Our objective was to examine the changes in symptom subtypes and...
STUDY OBJECTIVES
There is limited knowledge regarding the progression or consistency of symptoms in OSA over time. Our objective was to examine the changes in symptom subtypes and identify predictors over a span of 5 years.
METHODS
Data of 2,643 participants of the Sleep Heart Health Study with complete baseline and 5-year follow-up visits were analyzed. Latent Class Analysis on 14 symptoms at baseline and follow-up determined symptom subtypes. Individuals without OSA (AHI<5) were incorporated as a known class at each time point. Multinomial logistic regression assessed the effect of age, sex, body mass index (BMI) and AHI on specific class transitions.
RESULTS
The sample consisted of 1,408 women (53.8%) and mean (SD) age 62.4 (10.5) years. We identified four OSA symptom subtypes at both baseline and follow-up visits: and . Nearly half (44.2%) of the sample transitioned to a different subtype; transitions to were the most common (77% of all transitions). A five-year older age was associated with a 50% increase in odds to transit from to [OR (95% CI: 1.52 (1.17, 1.97)]. Women had 1.97 times higher odds (95% CI: 1.21, 3.18) to transition from to . A 5-unit increase in BMI was associated with 2.39 greater odds (95% CI: 1.30, 4.40) to transition from to . Changes in AHI did not significantly predict any transitions.
CONCLUSIONS
The symptoms of OSA may fluctuate or remain stable over time. Knowledge of symptom progression in OSA may support clinicians with treatment decisions.
PubMed: 38935050
DOI: 10.5664/jcsm.11258 -
Zhurnal Nevrologii I Psikhiatrii Imeni... 2024The study of neurological symptoms and signs connected with neoplasms and antitumor therapy is relevant in the context of an increasing prevalence of cancer. The... (Review)
Review
The study of neurological symptoms and signs connected with neoplasms and antitumor therapy is relevant in the context of an increasing prevalence of cancer. The COVID-19 pandemic and social factors have increased the number of patients suffering from insomnia. Sleep disorders is an unfavorable prognostic factor for neoplasms. The review presents risk factors and mechanisms of sleep disturbance, their relationship with inflammation and dysfunction of the immune system in cancer. In particular, dysfunction of the melatonergic system is discussed as a risk factor for the development of insomnia and cancer. The relevance of developing measures aimed at the rehabilitation of patients in order to restore normal sleep, which plays a fundamental role in maintaining a person's mental and physical health, is emphasized.
Topics: Humans; Neoplasms; COVID-19; Sleep Wake Disorders; Risk Factors; SARS-CoV-2; Sleep Initiation and Maintenance Disorders; Inflammation
PubMed: 38934677
DOI: 10.17116/jnevro2024124052125 -
Zhurnal Nevrologii I Psikhiatrii Imeni... 2024Comparative assessment of the level of differentiating growth factor 15 (GDF 15 ) against the background of a 6-month course of respiratory support in the mode of...
OBJECTIVE
Comparative assessment of the level of differentiating growth factor 15 (GDF 15 ) against the background of a 6-month course of respiratory support in the mode of automatic positive pressure in the airways therapy (aPAP therapy) in patients with obstructive sleep apnea syndrome (OSA).
MATERIAL AND METHODS
59 men participated in the study, the average age was 51.9±2.4 years. The main group (MG1) consisted of 30 patients with a verified diagnosis of moderate OSA. 29 men of comparable age and body weight made up the control group (CG) without an objectively confirmed diagnosis of OSA. After the stage of introduction into the study, the type of respiratory support with individual pressure settings was selected for patients with MG1. After 6 months of aPAP therapy with high compliance (at least 85%), the same patients who made up MG2 after treatment underwent repeated polysomnography (PSG) and the GDF 15 content was evaluated. Methods: questionnaire, examination, polysomnography, enzyme immunoassay of blood serum to determine the content of GDF 15.
RESULTS
A 6-month course of aPAP therapy with a high degree of compliance significantly improved the sleep structure and breathing pattern: the representation of NREM 3 increased from 79.2±15.6 to 102.6±21.6 minutes and the REM phase from 56.9± 13.6 to 115.6±26.8. Episodes of apnea were eliminated - apnea-hypopnea index decreased from 21.1 [17.3; 39.1] to 2.5 [1.8; 4.6] and the average values of SaO increased from 85.9% to 91.5%. At the same time, a statistically significant excess of GDF 15 was revealed in MG1 - 20.4 [14.16; 31.71] and MG2 - 17.2 [13.63; 24.44]) in comparison with CG - 13.65 [10.7; 17.09]. Despite the lack of statistical significance, a change in the level of GDF 15 was revealed in the form of a decrease in its concentration after a 6-month course of aPAP therapy.
CONCLUSION
A 6-month course of aPAP therapy made it possible to eliminate intermittent nocturnal hypoxia and improve sleep structure in patients with OSA, as well as reduce the content of GDF 15 protein in blood serum in patients with OSA. However, the tendency to decrease the content of this protein, despite the lack of statistical reliability, confirms the effectiveness of OSA therapy and the possibility of preventing early and pathological aging from the standpoint of somnology and molecular biogerontology.
Topics: Humans; Male; Middle Aged; Growth Differentiation Factor 15; Pilot Projects; Sleep Apnea, Obstructive; Polysomnography; Continuous Positive Airway Pressure; Sleep Apnea Syndromes; Adult
PubMed: 38934676
DOI: 10.17116/jnevro2024124052118 -
Zhurnal Nevrologii I Psikhiatrii Imeni... 2024To analyze complaints about sleep disorders and assess the incidence of various sleep disorders, using relevant scales, in patients with medication-overuse headache...
OBJECTIVE
To analyze complaints about sleep disorders and assess the incidence of various sleep disorders, using relevant scales, in patients with medication-overuse headache (MOH) in comparison with patients without MOH.
MATERIAL AND METHODS
The prospective case-control study included 171 patients, aged 18 years and older, with MOH (main group), and173 patients with primary headaches without MOH (control group). A neurologist conducted an initial examination and professional interview before the start of treatment. To diagnose sleep disorders, the International Classification of Sleep Disorders (3rd edition, 2014) was used. Additionally, an assessment was made using the Insomnia Severity Index Scale, the Epworth Sleepiness Scale (ESS) and the Lausanne Obstructive Sleep Apnea Syndrome Scale (NoSAS).
RESULTS
Statistically significant differences were revealed in the prevalence of the following complaints about sleep disorders in patients with MOH: lack of sleep (51.5%), frequent awakenings during sleep (43.3%), discomfort in legs before falling asleep or at rest in the evening (37.4%). Difficulties falling asleep occurred equally often in both patients with MOH (43.9%) and without MOH (37.0%), as well as daytime sleepiness (40.4% vs 36.4%) and the presence of snoring (13% of patients in each group). Patients with MOH were significantly more likely to suffer from chronic insomnia (60.2% and 47.4%, respectively, =0.02; OR 1.7; 95% CI 1.1-2.6) and restless legs syndrome (37.4% and 22.0%, respectively, =0.002; OR 2.1; 95% CI 1.3-3.4). The incidence of hypersomnia and obstructive sleep apnea syndrome did not have statistically significant differences.
CONCLUSION
Patients with MOH compared to patients without MOH have a significantly higher incidence of main complaints of sleep disorders, chronic insomnia and restless legs syndrome, which indicates the importance of sleep disorders in the pathogenesis of medication-overuse headaches and requires timely diagnosis and treatment to prevent the progression of both headaches and sleep disorders.
Topics: Humans; Male; Female; Middle Aged; Adult; Headache Disorders, Secondary; Prospective Studies; Case-Control Studies; Sleep Wake Disorders; Sleep Initiation and Maintenance Disorders; Incidence; Sleep Apnea, Obstructive; Prevalence; Aged
PubMed: 38934672
DOI: 10.17116/jnevro202412405293 -
Zhurnal Nevrologii I Psikhiatrii Imeni... 2024To study the relationship between brain-derived neurotrophic factor (BDNF) and the severity of nocturnal hypoxemia in patients in the acute and early recovery period of...
OBJECTIVE
To study the relationship between brain-derived neurotrophic factor (BDNF) and the severity of nocturnal hypoxemia in patients in the acute and early recovery period of ischemic stroke (IS).
MATERIAL AND METHODS
We enrolled 44 patients (27 men, 17 women), aged 18-85 years, in the acute phase of IS. At 3-month follow-up, 35 people were examined (21 men and 14 women). In the acute period, in addition to routine diagnostic procedures, respiratory monitoring was carried out, and the serum level of BDNF was measured by enzyme-linked immunosorbent assay. BDNF level was also evaluated at 3-month follow-up visit. Neurological status and its dynamics in the acute period of stroke were assessed as part of the clinical routine according to the National Institutes of Health Stroke Scale (NIHSS) at admission and discharge.
RESULTS
We found a direct correlation between the duration of hypoxemia with SpO less than 90% (=0.327, =0.035) and less than 85% (=0.461, =0.003) and BDNF level in the acute phase of IS. BDNF level in the acute period of IS was negatively correlated with the minimum saturation value (=-0.328, =0.034). There was a direct relationship between BDNF level in the early recovery period and the duration of hypoxemia with SpO less than 85% (=-0.389, =0.028). A regression model showed that BDNF level was associated with the minimum SpO level. No significant associations were found with indicators of sleep-disordered breathing severity, such as the apnea-hypopnea index and the oxygen desaturation index.
CONCLUSION
The severity of nocturnal hypoxemia is associated with the increase in BDNF levels both in the acute and recovery periods of IS, regardless of the presence of concomitant breathing disorders during sleep.
Topics: Humans; Male; Brain-Derived Neurotrophic Factor; Female; Middle Aged; Aged; Adult; Hypoxia; Aged, 80 and over; Adolescent; Ischemic Stroke; Young Adult
PubMed: 38934669
DOI: 10.17116/jnevro202412405272 -
Zhurnal Nevrologii I Psikhiatrii Imeni... 2024Analysis of factors affecting adherence to continuous positive airway pressure (CPAP) therapy in patients with obstructive sleep apnea (OSA). (Review)
Review
OBJECTIVE
Analysis of factors affecting adherence to continuous positive airway pressure (CPAP) therapy in patients with obstructive sleep apnea (OSA).
MATERIAL AND METHODS
The literature search was carried out using the databases PubMED, Google Scholar, E-library, Cyberleninka for the period 2013-2023 and included reviews and original articles.
RESULTS
The main groups of factors affecting adherence to CPAP therapy in patients with OSA have been established. These include sociodemographic and socioeconomic factors, the severity of OSA and the severity of clinical symptoms, and psychosocial factors. Strategies that can improve adherence were identified (educational technologies for patients, telemedicine technologies, behavioral therapy, modern technical interventions).
CONCLUSION
Factors that improve adherence to CPAP therapy are high levels of education and income, more severe OSA forms accompanied by daytime sleepiness, support from the patient's spouse and social support. Factors such as low levels of education and income, smoking, symptoms of depression and hypochondria, as well as side-effects worsen adherence to CPAP therapy, including refusal to continue treatment. It should be noted that all the identified factors are very closely associated with each other, so it is necessary to evaluate them comprehensively in each patient with OSA.
Topics: Humans; Sleep Apnea, Obstructive; Continuous Positive Airway Pressure; Patient Compliance; Social Support; Socioeconomic Factors
PubMed: 38934667
DOI: 10.17116/jnevro202412405258 -
Zhurnal Nevrologii I Psikhiatrii Imeni... 2024Obstructive sleep apnea (OSA) syndrome is not only a widespread pathology, but also has far-reaching social consequences due to patients' poor quality of nighttime sleep... (Review)
Review
Obstructive sleep apnea (OSA) syndrome is not only a widespread pathology, but also has far-reaching social consequences due to patients' poor quality of nighttime sleep and high daytime sleepiness. To date, a large number of methods, both conservative and surgical, have been developed for the treatment of OSA. Surgeries performed for OSA are aimed at correcting the structures of the nose, pharynx, larynx, as well as the hyoid and jaw bones and the muscles attached to them. Despite the seventy-five-year history of the use of surgical treatment methods, there is still no complete clarity regarding the advisability of certain types of operations. The article presents data from meta-analyses published over the last ten years and devoted to various types of surgical procedures aimed at combating OSA in adult and pediatric populations. Rhinosurgical approaches, uvulopalatopharyngoplasty, surgical advancement of the lower jaw in adults and expansion of the upper jaw in children, interventions on the hyoid bone and mental tubercle, removal of the palatine and pharyngeal tonsils, operations for laryngomalacia and bariatric surgery are considered. Data on the effectiveness of the most common operations: tonsillectomy in adults (85%), multilevel pharyngoplasty (60%); and about a wide range of data on the effectiveness of uvulopalatoplasty (25 to 94%) are presented. Effective surgical options and criteria for a positive prognosis of such treatment, the possibility of complete cure of OSA, that is, reducing the apnea/hypopnea index (AHI) below 5 events per hour in adults, are discussed. In conclusion, the need to continue research using Sher's criteria for the effectiveness of surgical operations is emphasized: a reduction in AHI by 50% or more or below 20 events per hour. Research that includes long-term postoperative follow-up is especially important.
Topics: Humans; Sleep Apnea, Obstructive; Tonsillectomy; Pharynx; Treatment Outcome; Otorhinolaryngologic Surgical Procedures; Bariatric Surgery
PubMed: 38934666
DOI: 10.17116/jnevro202412405253