Artificial Intelligence-Based Diagnosis of Obstructive Sleep Apnea Syndrome: A Scoping Review / Diagnóstico Basado en Inteligencia Artificial para el Síndrome Obstructivo de Apnea del Sueño: Una Revisión de Alcance

SUMMARY: To diagnose obstructive sleep apnea syndrome (OSAS), polysomnography is used, an expensive and extensive study requiring the patient to sleep in a laboratory. OSAS has been associated with features of facial morphology, and a preliminary diagnosis could be made using an artificial intelligence (AI) predictive model. This study aimed to analyze, using a scoping review, the AI-based technological options applied to diagnosing OSAS and the parameters evaluated in such analyses on craniofacial structures. A systematic search of the literature was carried out up to February 2024, and, using inclusion and exclusion criteria, the studies to be analyzed were determined. Titles and abstracts were independently selected by two researchers. Fourteen studies were selected, including a total of 13,293 subjects analyzed. The age of the sample ranged from 18 to 90 years. 9,912 (74.56 %) subjects were male, and 3,381 (25.43 %) were female. The included studies presented a diagnosis of OSAS by polysomnography; seven presented a control group of subjects without OSAS and another group with OSAS. The remaining studies presented OSAS groups in relation to their severity. All studies had a mean accuracy of 80 % in predicting OSAS using variables such as age, gender, measurements, and/or imaging measurements. There are no tests before diagnosis by polysomnography to guide the user in the likely presence of OSAS. In this sense, there are risk factors for developing OSA linked to facial shape, obesity, age, and other conditions, which, together with the advances in AI for diagnosis and guidance in OSAS, could be used for early detection.

Para diagnosticar el Síndrome Apnea Obstructiva del Sueño (SAOS) se utiliza la polisomnografía, el cual es un costoso y extenso estudio que exige que el paciente duerma en un laboratorio. El SAOS ha sido asociado con características de la morfología facial y mediante un modelo predictivo de la Inteligencia Artificial (IA), se podría realizar un diagnóstico preliminar. El objetivo de este estudio fue analizar por medio de una revisión de alcance, las opciones tecnológicas basadas en IA aplicadas al diagnóstico del SAOS, y los parámetros evaluados en dichos análisis en las estructuras craneofaciales. Se realizó una búsqueda sistemática de la literatura hasta febrero del 2024 y mediante criterios de inclusión y exclusión se determino los estudios a analizar. Los títulos y resúmenes fueron seleccionados de forma independiente por dos investigadores. Se seleccionaron 14 estudios, incluyeron un total de 13.293 sujetos analizados. El rango edad de la muestra oscilo entre 18 y 90 años. 9.912 (74.56 %) sujetos eran de sexo masculino y 3.381 (25,43 %) eran de sexo femenino. Los estudios incluidos presentaron diagnóstico de SAOS mediante polisomnografía, siete estudios presentaron un grupo control de sujetos con ausencia de SAOS y otro grupo con presencia de SAOS. Mientras que los demás estudios, presentaron grupos de SAOS en relación con su severidad. Todos los estudios tuvieron una precisión media del 80 % en la predicción de SAOS utilizando variables como la edad, el género, mediciones y/o mediciones imagenológicas. no existen exámenes previos al diagnóstico por polisomnografía que permitan orientar al usuario en la probable presencia de SAOS. En este sentido, existen factores de riesgo para desarrollar SAOS vinculados a la forma facial, la obesidad, la edad y otras condiciones, que sumados a los avances con IA para diagnóstico y orientación en SAOS podrían ser utilizados para la detección precoz del mismo.

Apnea obstructiva del sueño en la práctica clínica cardiológica. Epidemiología, diagnóstico y tratamiento. Estudio observacional, retrospectivo y transversal / Obstructive sleep apnea in cardiology clinical practice. Epidemiology, diagnosis, and treatment. Observational, cross-sectional, and retrospective study

Resumen Objetivo: Determinar las características clínico-epidemiológicas, viabilidad diagnóstica de la poligrafía respiratoria domiciliaria y el tratamiento de pacientes con sospecha de apnea obstructiva del sueño (AOS) en riesgo cardiovascular. Métodos: Se realizó estudio observacional, transversal, descriptivo en pacientes atendidos en un servicio de consulta externa de cardiología con sospecha de AOS, de enero de 2015 a diciembre de 2019. La información se obtuvo de los expedientes médicos, se aplicó análisis estadístico descriptivo. Resultados: Se examinaron 138 expedientes, de las poligrafías respiratorias domiciliarias fueron descartadas solo el 8% por no cumplir con los estándares de calidad requeridos. Se demostró que el 89% padecían AOS, un 60% moderada a severa; predominó en hombres después de los 50 años. El principal ractores de riesgo cardiovascular fue hipertensión (89%). La cardiopatía más prevalente fue la hipertensiva (52%). Se optimizó tratamiento farmacológico cardiovascular en el 82% de los casos. Rehabilitación cardiaca en el 30%, ventilación mecánica no invasiva 41%, modalidad fija 33% y autoajustable 9%, todos con telemetría. Conclusiones: La prevalencia y severidad de la AOS es mayor en presencia de riesgo o enfermedad cardiovascular establecida. Ante la sospecha clínica es factible confirmar el diagnóstico con poligrafía respiratoria domiciliaria por el nivel de precisión y la menor infraestructura requerida. Es necesaria una mayor participación del cardiólogo en el diagnóstico y tratamiento de este trastorno por el riesgo significativo de enfermedad cardiovascular que representa.

Abstract Objective: To determine the clinical-epidemiological characteristics, diagnostic feasibility of home respiratory polygraphy and treatment of patients with suspected obstructive sleep apnea (OSA) at cardiovascular risk. Methods: An observational, cross-sectional, descriptive study was conducted in patients seen in a cardiology outpatient service with suspected OSA, from January 2015 to December 2019. The information was obtained from medical records, and a descriptive statistical analysis was applied to this information. Results: 138 files were reviewed; only 8% of the home respiratory polygraphs were discarded, because they did not meet the required quality standards. It was demonstrated that 89% suffered from OSA, 60% moderate to severe; in men after 50 years of age. The main cardiovascular risk factors was hypertension (89%). The most prevalent heart disease was hypertension (52%). Cardiovascular pharmacological treatment was improved in 82% of the cases. Cardiac rehabilitation in 30%, noninvasive mechanical ventilation 41%, fixed modality 33%, and self-adjustable 9%, all with telemetry. Conclusions: The prevalence and severity of OSA is higher in the presence of risk or established cardiovascular disease. In the presence of clinical suspicion, it is feasible to confirm the diagnosis with home respiratory poligrafy due to the level of precision and the lower infrastructure required. Greater involvement of the cardiologist in the diagnosis and treatment of this disorder is necessary due to the significant risk of cardiovascular disease it represents.

Estudio de la vía aérea superior frente a apneas obstructivas del sueño persistentes en pediatría / An approach to the upper airway evaluation in pediatric persistent obstructive sleep apnea

El síndrome de apneas obstructivas del sueño (SAOS) en pediatría constituye un trastorno asociado a múltiples consecuencias en el espectro cognitivo y comportamental. El principal factor de riesgo asociado es la hipertrofia amigdalina y las vegetaciones adenoideas. La adenoamigdalectomía es el tratamiento de primera línea. La incidencia del SAOS persistente varía entre un 15 % y un 75 % según las comorbilidades. Este se presenta como un desafío a la hora de tratarlo; requiere un abordaje integral para su diagnóstico y tratamiento adecuado. El objetivo de esta revisión bibliográfica es proponer un abordaje diagnóstico y terapéutico para el SAOS persistente.

In pediatrics, obstructive sleep apnea syndrome (OSAS) is a disorder associated with multiple consequences at the cognitive and behavioral level. The main associated risk factor is the presence of tonsillar hypertrophy and adenoids. An adenotonsillectomy is the first-line treatment. The incidence of persistent OSAS varies from 15% to 75%, depending on comorbidities. This is a challenge in terms of management; it requires a comprehensive approach for an adequate diagnosis and treatment. The objective of this bibliographic review is to propose a diagnostic and therapeutic approach for persistent OSAS.

Brain white matter variation in patients with obstructive sleep apnea-hypopnea syndrome with diffusional kurtosis imaging / 中国耳鼻咽喉头颈外科

OBJECTIVE To explore the changes of brain white matter of the patients with obstructive sleep apnea-hypopnea syndrome(OSAHS)with magnetic resonance diffusional kurtosis imaing(DKI).METHODS There were 38 patients with OSAHS examined by polysomnogram(PSG)from November 2017 to June 2021,and 32 non-OSAHS controls matched in gender and age who were included in this study.All the subjects were scanned by DKI.The different encephalic regions through comparing kurtosis fractional anisotropy(KFA)values of all encephalic regions between the two groups were found,and the relationship between the KFA values of the different encephalic regions in OSAHS patients and the apnea-hypopnea index(AHI),lowest saturation oxygen(LSaO2)and the percent of the total record time spent below 90%oxygen saturation(TS90%)in PSG were analyzed.RESULTS The KFA values of white matter fiber tracts in corpus callosum,bilateral corona radiata,cingulate gyrus,right superior cerebellar peduncle and inferior cerebellar peduncle of OSAHS group were obviously lower than control group(P<0.05).After controlling for age and body mass index(BMI),the partial correlation between AHI and the KFA values of corpus callosum,left posterior corona radiata,right anterior corona radiata,cingulate gyrus in OSAHS group were also negative(r=-0.344,-0.380,-0.406,-0.53,P<0.05).The partial correlation between LSaO2 and the KFA values of corpus callosum,left posterior corona radiata,right anterior corona radiata,cingulate gyrus,right superior cerebellar peduncle in OSAHS group were also positive(r=0.366,0.406,0.446,0.404,0.342,P<0.05).The partial correlation between TS90%and the KFA values of corpus callosum,left posterior corona radiata,right anterior corona radiata,cingulate gyrus,right superior cerebellar peduncle and inferior cerebellar peduncle in OSAHS group were also negative(r=-0.414,-0.352,-0.355,-0.336,-0.456,-0.360,P<0.05).CONCLUSION Recurrent apnea and hypoxemia at night of OSAHS patients can cause damage to white matter fibers in parts of encephalic regions.

Correlation between serum asprosin and apropin levels and disease severity in elderly patients with obstructive sleep apnea syndrome / 中国耳鼻咽喉头颈外科

OBJECTIVE To investigate the correlation between serum levels of asprosin and adropin in elderly patients with obstructive sleep apnea syndrome(OSAS)and the disease severity.METHODS From August 2021 to August 2023,131 elderly OSAS patients admitted to Ezhou Central Hospital were collected as observation subjects(OSAS group),according to the sleep apnea hypopnea index(AHI),there were 40 cases in the mild group,52 cases in the moderate group,and 39 cases in the severe group,meantime,124 healthy individuals who came to health clinic of our hospital for physical examination were collected as the control group.Enzyme-linked immunosorbent assay(ELISA)was applied to determine the levels of asprosin and apropin in the serum of OSAS patients;Pearson method was applied to analyze the correlation between serum asprosin,apropin levels and AHI,ODI,and LSaO2.ROC curve was used to analyze the diagnostic value of serum asprosin and adropin levels in OSAS and the severity of OSAS patients.RESULTS Compared with the control group,the asprosin level in the OSAS group was obviously increased,while the adropin level was obviously reduced(P<0.05).There was no statistically obvious difference in gender,age,coronary heart disease,hypertension,TC,TG,HDL-C,LDL-C among the mild,moderate,and severe groups(P>0.05);compared with the mild group,the levels of BMI,AHI,ODI,and asprosin in the moderate and severe groups were obviously increased,while the levels of LSaO2 and apropin were obviously reduced(P<0.05);compared with the moderate group,the levels of BMI,AHI,ODI,and asprosin in the severe group were obviously increased,while the levels of LSaO2 and apropin were obviously reduced(P<0.05).The serum asprosin level in OSAS patients was positively correlated with AHI and ODI,and negatively correlated with LSaO2(P<0.05);the level of apropin was negatively correlated with AHI and ODI,and positively correlated with LSaO2(P<0.05).The AUC of serum asprosin,apropin levels,and their combination in diagnosing moderate and severe OSAS was 0.832,0.882,and 0.942,respectively,the combined diagnostic value of the two was superior to that of single diagnosis(Z=3.435,2.560,P=0.001,0.011).Serum asprosin,adropin levels and AUC of combined diagnosis of OSAS were 0.818,0.804 and 0.893,respectively.The value of combined diagnosis was better than that of single diagnosis(Z=3.886,4.126,P=0.000,0.000).CONCLUSION The serum level of asprosin is increased and the level of adropin is decreased in patients with OSAS,which is closely related to the severity of the disease,and may be used in the clinical diagnosis of OSAS and the evaluation of the severity of OSAS.

Changes in serum TIMP-1 and PTX3 levels and clinical significance in patients with obstructive sleep apnea-hypopnea syndrome / 国际检验医学杂志

Objective To explore the expression and clinical significance of tissue inhibitor of matrix metal-loproteinases(TIMP)-1 and pentraxin-3(PTX3)in the serum of patients with obstructive sleep apnea-hypop-nea syndrome(OSAHS).Methods A total of 120 patients with OSAHS admitted to the hospital from 2021 to 2022 were selected as the study group,and another 114 healthy people who underwent the physical exami-nation in the same period were selected as the control group.The severity of OSAHS was determined accord-ing to the apnea-hypopnea index(AHI)and the minimum oxygen saturation(LSpO2),and the patients were divided into mild group(66 cases)and the moderate-severe group(54 cases).Serum TIMP-1 and PTX3 levels were measured by enzyme-linked immunosorbent assay.Pearson method was used to analyze the correlation between serum TIMP-1,PTX3 and AHI,LSpO2.Receiver operating characteristic(ROC)curve was used to analyze the predictive value of serum TIMP-1 and PTX3 on the severity of disease in patients with OSAHS.Logistic regression was used to analyze the factors influencing the severity of the disease in OSAHS patients.Results Serum TIMP-1,PTX3 and AHI levels in the study group were higher than those in the control group,and LSpO2 level was lower than that in the control group(P<0.05).The body mass index(BMI),the proportion of hypertension history,the proportion of coronary heart disease history,the levels of total choles-terol,triglycerides,low-density lipoprotein cholesterol,TIMP-1,PTX3 and AHI in the moderate-severe group were significantly higher than those in the mild group,and the high density lipoprotein cholesterol,LSpO2 lev-el was significantly lower than that in the mild group(P<0.05).Pearson method results showed that serum TIMP-1,PTX3 levels were positively correlated with AHI(r=0.428,0.392,P<0.05),and serum TIMP-1,PTX3 levels were negatively correlated with LSpO2(r=-0.645,-5.836,P<0.05).The results of the ROC curve showed that the area under the curve(AUC)of serum TIMP-1 and PTX3 alone predicted the severity of the patients'disease was 0.813 and 0.777,with cut-off values were 2.47 μg/L and 7.23 ng/L,with the sensi-tivity of 70.37%and 77.78%and the specificity of 77.27%and 72.23%,respectively.The AUC for predic-ting the severity of patients'disease by combining the two was 0.866,which was significantly higher than those of serum TIMP-1(Z=2.067,P=0.039)and PTX3 alone(Z=2.331,P=0.020).Logistic regression a-nalysis showed that TIMP-1,PTX3,history of hypertension,and history of coronary artery disease,AHI and LSpO2 were influential factors for severity of disease in patients with OSAHS(P<0.05).Conclusion TIMP-1 and PTX3 are both up-regulated in the serum of OSAHS patients and closely related to the severity of the disease,and they are the influential factors in the severity of OSAHS patients.

Quality assessment of global obstructive sleep apnea guidelines / 上海交通大学学报（医学版）

Objective·To evaluate the quality of clinical practice guidelines of obstructive sleep apnea(OSA)published worldwide.Methods·The guidelines of OSA were retrieved in PubMed,Embase,China National Knowledge Infrastructure(CNKI),Wanfang Data,SinoMed,MedSci,The Cochrane Library,and the websites such as Medlive,U.S.Preventive Services Task Force(USPSTF),National Institute for Health and Care Excellence(NICE),New Zealand Guidelines Group(NZGG),Scottish Intercollegiate Guidelines Network(SIGN),and Guidelines International Network(GIN)from establishment to December 2022.Two reviewers screened the literature and extracted the main information independently,using the Appraisal of Guidelines for Research and Evaluation Ⅱ(AGREE Ⅱ)and Reporting Items for Practice Guidelines in Healthcare(RIGHT)to evaluate the quality of the included OSA guidelines.Subgroup analysis was performed according to the publication regions of guidelines.The inter-evaluator consistency test was also performed and the results were expressed as the intra-class correlation coefficient(ICC).All the included guidelines were read entirely and the clinical questions they raised were summarized.Results·A total of 35 OSA guidelines were included.The ICC value of 0.975 showed a good inter-evaluator agreement.The results of AGREE Ⅱ showed that the average score of all guidelines was(63.60±16.45)%,with a minimum of 23.40%and a maximum of 91.67%.In the six domains,the scores of"Rigor of development"[(56.07±25.89)%]and"Applicability"[(53.57±15.52)%]were relative low.The average reporting rate of RIGHT of all the included guidelines was(67.84±20.03)%,with a minimum of 14.29%and a maximum of 94.29%,and the three domains with the lowest reporting rates were"Review and quality assurance"[(31.40±45.51)%],"Funding and conflict of interest declaration and management"[(56.43±33.95)%]and"Other aspects"[(56.19±36.85)%].Subgroup analysis showed that guidelines in Asian had a lower score in"Rigor of development"and a lower overall score of AGREE Ⅱ than the guidelines in America and Europe(both P<0.05),and the reporting rates in the domains of"Evidence"and"Other information"of RIGHT of the Asian guidelines were also lower than those in the guidelines in America and Europe(P<0.05).These guidelines focused on 42 clinical questions which were classified to 3 aspects,i.e.screening and diagnosis,treatment and long-term management of OSA.Conclusion·The quality of current global OSA guidelines varies a lot,and they need to be strengthened in terms of rigor of development,applicability,review and quality assurance,funding and conflict of interest declaration and management,especially those in Asia.

SIM1 gene mutation-associated early onset obesity: a case report and literature review / 中华实用儿科临床杂志

Clinical data of a child with SIM1 gene mutation-related obesity who visited Beijing Children′s Hospital, Capital Medical University in February 2022 was retrospectively analyzed.This 5-year-and-4-month-old girl was admitted for early onset obesity.She showed obesity at 29 months old, accompanied by severe obstructive sleep apnea syndrome.The patient and her mother had heterozygous variations in the SIM1 gene.Literature has reported a total of 42 patients with obesity caused by SIM1 gene mutations from different families in the world, and nearly 1/3 of patients had clinical manifestations beyond obesity, such as developmental delay, cognitive and behavioral problems, mild dysmorphic appearance, and neuroendocrine abnormalities.The patient in this study was mainly characterized by early onset obesity.At present, 58 SIM1 gene mutations are found to be related to obesity, which are mostly concentrated in the C-terminal domain.The allele frequency of p. T46R and p. D707H has reached 9.5%; therefore, p.T46R and p. D707H are considered hot spot variations, suggesting that SIM1 gene analysis should be improved for patients with early onset obesity.

Technical operating points of polysomnography-assisted drug-induced sleep endoscopic positive airway pressure titration / 天津医药

Recognizing upper airway obstruction and stenosis is critical to determine the subsequent treatment options in patients with obstructive sleep apnea(OSA).Drug-induced sleep endoscopy(DISE)is a 3D visual evaluation technology for the anatomical structure of the upper respiratory tract of OSA patients during"sleeping"state after being anesthetized.The dynamic situation of upper respiratory tract obstruction and collapse can be observed safely and quickly through endoscopy,which provides important reference for formulating surgical methods and positive airway pressure(PAP)intervention treatments.With the assistance of polysomnography(PSG),DISE plays an important role in optimizing individualized treatment plans for OSA.The present article introduces the technical operating points of PSG-assisted drug-induced sleep endoscopic positive airway pressure titration.

Research progress on the relationship between Alzheimer's disease and obstructive sleep apnea / 中华老年医学杂志

Alzheimer's disease(AD)is the most common cognitive disorder in the elderly and manifests primarily as progressive cognitive function decline, neuropsychiatric symptoms and multiple functional impairments.Obstructive sleep apnea(OSA)is a common type of respiratory disorder.Studies have found that AD and OSA are connected in many ways, including the risk of developing these diseases, biomarkers and neuroimaging features.These connections may result from a variety of mechanisms, such as neuropathological protein deposition, exacerbated immune-mediated inflammation, oxidative stress abnormalities, impaired mitochondrial function, and disturbed neurotransmitter systems, among others.This article reviewed the relationship between AD and OSA, the mechanisms linking them and their treatment.

Twin pregnancies with chronic hypertension and sleep apnea-hypopnea syndrome treated with continuous positive airway pressure: report of three cases / 中华围产医学杂志

This paper reports the maternal and fetal outcomes of three twin pregnancies with chronic hypertension and obstructive sleep apnea-hypopnea syndrome (OSAHS) who were treated with continuous positive airway pressure (CPAP). All three women with twin pregnancies were diagnosed with chronic hypertension. Furthermore, symptoms such as snoring and apnea assisted the diagnosis of OSAHS through polysomnography monitoring. Case 1 was treated with CPAP at 28 gestational weeks. The blood pressure increased gradually after the first month of CPAP treatment, with an elevated urine protein concentration. At 34 gestational weeks, the pregnant woman underwent a cesarean section due to the development of hemolysis, elevated liver enzymes, and low platelet syndrome. Case 2 was treated with CPAP at 11 gestational weeks, with stable blood pressure throughout the pregnancy, and was delivered through cesarean section at 37 weeks of pregnancy. Case 3 started CPAP at 13 gestational weeks for four months, and increased blood pressure and urine protein were observed. Medication brought the blood pressure down, and urine protein became negative. At 32 gestational weeks, a cesarean section was performed because of premature rupture of the membrane. Her CPAP treatment continued till delivery with good maternal and infant outcomes. The treatment outcomes of the three cases suggest that CPAP may prolong the time of blood pressure rise among twin pregnancies where chronic hypertension and OSAHS coexist, which potentially reduces the occurrence of adverse maternal and infant outcomes.

Study on Syndrome Research of Ischemic Stroke Combined with Obstructive Sleep Apnea-hypopnea Syndrome Based on Implicit Structure Method / 中国实验方剂学杂志

ObjectiveTo explore the common syndrome elements of cerebral ischemic stroke （CIS） complicated with obstructive sleep apnea-hypopnea syndrome （OSAHS）， reveal the characteristics of traditional Chinese medicine （TCM） syndromes of the disease， clarify the syndrome differentiation and syndrome types， provide evidence for clinical syndrome differentiation， and provide reference for establishing the TCM syndrome type standards of CIS complicated with OSAHS. MethodThe clinical information form of CIS complicated with OSAHS formulated by the research group was used for syndrome survey， and the four-examination information of 300 patients with CIS complicated with OSAHS was collected. The four-examination information of patients was analyzed by latent structure method and comprehensive cluster analysis， and the common syndrome elements of CIS complicated with OSAHS were extracted by combining the TCM basic theory and clinical experience. On this basis， the characteristics of TCM syndromes and the syndrome types in line with reality were summarized. ResultThe top five syndrome elements in patients with CIS and OSAHS are sleep snoring， open mouth breathing， physical obesity， night awakening and dizziness. The top five tongue and pulse manifestations are enlarged tongue， slippery pulse， slippery coating， thick and white coating and purple tongue. The disease locations are the lung， spleen， stomach， kidney， liver and brain. The nature of disease includes deficiency， depression， blood stasis， phlegm， dampness and fire. The clinical syndrome types include the syndrome of stagnation of phlegm and dampness， syndrome of phlegm-dampness blocking the mind， syndrome of spleen deficiency with dampness， syndrome of Yin deficiency leading to fire hyperactivity， syndrome of Qi depression blocking collaterals， syndrome of liver depression and blood stasis， syndrome of Qi deficiency with dampness， and syndrome of Yang deficiency induced water retention. ConclusionIn addition to the common phlegm-， dampness- and blood stasis-related syndromes in patients with CIS and OSAHS， there are also depression- and deficiency-related syndromes. The main etiology and pathogenesis is the disturbance of Qi movement. In clinical practice， attention should be paid to the specific situation of individual patients to differentiate between deficiency and excess， and the treatment should be performed by the method of soothing and reinforcing， or unblocking and clearing， or both.

Research progress of pharmacologic therapy in obstructive sleep apnea / 中国临床药理学与治疗学

Obstructive sleep apnea (OSA) is a common sleep disordered breathing disorder. As a major global public health problem, untreated OSA can lead to a variety of adverse health outcomes, including various cardiovascular and cerebrovascular diseases, metabolic disorders, and psychiatric disorders such as anxiety and depression. Traditional OSA therapies such as positive airway pressure (PAP), weight loss, oral appliance, upper airway surgery, and postural therapy focus on the anatomical factors of OSA. However, the pathogenesis of OSA is heterogeneous, and non-anatomical factors also play an important role in most patients. Although there is no drug with exact efficacy for the treatment of OSA, with the deepening understanding of the pathophysiological mechanism of OSA, more and more clinical studies are devoted to the study of drug treatment of OSA and its complications, and a series of results have been achieved. The following is a review of the relevant studies on drug treatment of OSA in recent years, hoping to provide literature support and theoretical basis for future research on drug treatment of OSA.

Advances in the study of mesenchymal stem cells in obstructive sleep apnea hypoventilation syndrome / 中国临床药理学与治疗学

Mesenchymal stem cells (MSCs) are self-regenerating, rapidly proliferating pluripotent stem cells that depend primarily on their derived pro-angiogenic, inflammatory regulatory, and trophic factors to exert beneficial effects that attenuate deleterious inflammatory responses, reduce vascular damage, and promote tissue repair and regeneration. Obstructive sleep apnea hypoventilation syndrome (OSAHS) is a chronic disorder marked by oropharyngeal collapse during sleep, resulting in transient reduced airflow, large fluctuations in intrathoracic pressure, and intermittent hypoxia and hypercapnia. OSAHS subsequently cytokine-mediated inflammatory cascades, oxidative stress, and ischemia, recruit MSCs from inflamed and damaged tissues through MSCs-derived of anti-inflammatory and pro-angiogenic factor activity, reduce hypoxia, suppress inflammation, promote regeneration, and prevent fibrosis in OSAHS-injured tissues. In this paper, we will describe the pathogenesis of inflammation, oxidative stress, fibrosis and ischemia from the perspective of OSAHS, highlighting the current research progress on MSCs-dependent regulation of OSAHS-related pathology.

Research progress on the diagnosis and treatment of pediatric malocclusion combined with obstructive sleep apnea-hypopnea syndrome / 口腔疾病防治

@#Pediatric malocclusion is common in dentistry. Some children with malocclusion combined with obstructive sleep apnea-hypopnea syndrome (OSAHS) often fail to receive appropriate treatment due to a lack of multidisciplinary diagnosis and treatment. It can cause abnormal ventilation during sleep, affecting the central nervous system and cardiovascular development and even causing neurological and behavioral problems. Pediatric OSAHS is caused by the narrowing of the upper respiratory tract, characterized by specific facial bone characteristics and neuromuscular factors and correlated with malocclusion. Due to its diverse clinical manifestations and etiology, the diagnosis and treatment of pediatric OSAHS require an interdisciplinary, personalized, and specialized approach. Questionnaires and physical examinations can be used for preliminary screening. Moreover, children's stomatology and otorhinolaryngology examinations are the basis for disease diagnosis. Polysomnography (PSG) is currently the direct diagnostic method. There are various treatment methods for OSAHS in children, and for OSAHS caused by adenoid tonsil hypertrophy, adenoidectomy and tonsillectomy are the main treatments. Othodontic treatment including mandibular advancement and rapid maxillary expansion et al is also effective for OSAHS in children with malocclusion. Currently, there is limited research on the correlation between childhood malocclusion and OSAHS, and multidisciplinary combination therapy may improve the cure rate, but there is a lack of sufficient evidence. In the future, the pathogenesis of OSAHS should be further elucidated, and research on multidisciplinary combination therapy should be promoted to achieve early intervention and treatment for potential and existing patients.

Advances in the study of mesenchymal stem cells in obstructive sleep apnea hypoventilation syndrome / 中国临床药理学与治疗学

Mesenchymal stem cells(MSCs)are self-regenerating,rapidly proliferating pluripotent stem cells that depend primarily on their derived pro-angiogenic,inflammatory regulatory,and tro-phic factors to exert beneficial effects that attenu-ate deleterious inflammatory responses,reduce vascular damage,and promote tissue repair and re-generation.Obstructive sleep apnea hypoventila-tion syndrome(OSAHS)is a chronic disorder marked by oropharyngeal collapse during sleep,re-sulting in transient reduced airflow,large fluctua-tions in intrathoracic pressure,and intermittent hy-poxia and hypercapnia.OSAHS subsequently cyto-kine-mediated inflammatory cascades,oxidative stress,and ischemia,recruit MSCs from inflamed and damaged tissues through MSCs-derived of anti-inflammatory and pro-angiogenic factor activity,re-duce hypoxia,suppress inflammation,promote re-generation,and prevent fibrosis in OSAHS-injured tissues.In this paper,we will describe the patho-genesis of inflammation,oxidative stress,fibrosis and ischemia from the perspective of OSAHS,high-lighting the current research progress on MSCs-de-pendent regulation of OSAHS-related pathology.

Aspects clinico-neurophysiologiques des troubles du sommeil dans une population d'adultes jeunes entre 18-35 ans / Clinical-neurophysiological aspects of sleep disorders in a population of young adults aged 18-35 years

Contexte et objectifs : L'accès aux tests neurophysiologiques pour le diagnostic des Troubles du Sommeil (TS) est très limité dans les pays d'Afrique subsaharienne. La présente étude avait pour objectif de déterminer les caractéristiques épidémiologiques, cliniques et neurophysiologiques des (TS) dans un groupe de jeunes adultes. Méthodes : Il s'est agi d'une étude descriptive d'une série de cas, réalisée au centre de Médecine du sommeil et des maladies respiratoires de l'hôpital de la Croix-Rousse de Lyon du 1er janvier au 31 mars 2019. Les patients hospitalisés pendant cette période pour l'exploration d'un (TS) ont été sélectionnés. Etaient éligibles ceux dont l'âge était compris entre 18 et 35 ans, des deux sexes, ayant renseigné un questionnaire et ayant bénéficié au minimum d'une polysomnographie (PSG). Résultats : Quatre-vingt-onze patients étaient examinés. Les femmes étaient les plus affectées (59,3 %). Leur âge moyen était de 26,6 ± 5 ans. La PSG a incriminé le Syndrome d'Apnée Hypopnée Obstructive du sommeil (SAHOS) comme étiologie principale (66 %). Pour les patients sans SAHOS, 38,7 % avaient une PSG normale et la PSG avec d'autres tests de sommeil ont objectivé, pour le reste (61,3 %), d'autres types de (TS). La dépression (50,7 %) et la fatigue chronique (84,6 %) étaient très fréquentes. L'indice d'efficacité du sommeil était faible pour 70 % des patients avec SAHOS. Il y avait un déséquilibre de la durée des stades du sommeil, augmentée pour le sommeil lent léger et diminuée pour le sommeil lent profond dans la population avec SAHOS, tandis que la durée du sommeil paradoxal chez ceux sans SAHOS était augmentée. Conclusion Le SAHOS est fréquent dans cette formation hospitalière, avec des répercussions significatives à type de dépression et de fatigue chronique. Il est important que des mesures rendant accessible l'usage des tests d'exploration du sommeil particulièrement en Afrique au sud du Sahara, soient mises en place pour diagnostiquer ces troubles

Context and objective. Access to neurophysiological tests for diagnostic of sleep disorders (SD) is very limited in Sub-Saharan Africa countries. The objective was to determine the epidemiological, clinical and neurophysiological characteristics of SD in a young adult group. Methods. This was a descriptive serial cases study carried out at the Sleep Medicine and Respiratory Diseases Center of the CroixRousse hospital of Lyon between January 1st and March 31th, 2019. Patients hospitalized during this period with tests for SD were selected. Eligible were those aged between 18 and 35 years, both sexes, who completed a questionnaire and who received at least a polysomnography (PSG). Results. Ninety-one patients were involved. Women remained the most affected (59.3%). Mean age was 26.6±5 years. PSG incriminated obstructive sleep apnea (OSA) syndrome as the primary etiology (66%). For patients without OSA, 38.7% had normal PSG. For the remaining 61.3% of patients, other types of SD were found using PSG with various sleep tests. Depression (50.7%) was an important comorbidity, and chronic fatigue (84.6%) was the most frequent complaint. Sleep efficiency index was low for 70% of sleep apnea patients. There was an imbalance in the duration of sleep stages, with an increase in light slow-wave sleep in the OSA population and a decrease in their deep slow-wave sleep, while REM sleep duration in patients without OSA was increased. Conclusion: OSA was the primary etiology in our study, with significant repercussions like depression and chronic fatigue. Public health measures such as increasing access to the use of sleep exploration tests, especially in subSaharan Africa, should be put in place for the diagnosis of these sleep disorders and their consequences

Late effects of caffeine use on sleep of infants born prematurely / Efeitos tardios do uso de cafeína no sono de crianças nascidas prematuras

ABSTRACT Objective: This study aimed to evaluate whether the therapeutic use of caffeine for premature newborns is associated with changes in sleep habits and the presence of obstructive sleep apnea in childhood. Methods: This is a cross-sectional single-center study in which the caretakers of 87 children aged 5-10 years, born full-term or preterm, treated or not with caffeine in the neonatal period, answered questionnaires to screen for obstructive sleep apnea (Pediatric Obstructive Sleep Apnea Screening Tool [PosaST]) and to characterize the sleep habits (Children's Sleep Habits Questionnaire [CSHQ]) of their children. ANOVA and linear regression tests were performed to verify possible differences between the groups. Results: Children born prematurely who were treated with caffeine woke up significantly later on weekdays than those born at term (09h±00h58 and 07h43±1h15, respectively, p=0.022) and had longer total daily sleep time also compared to those born at term (10h24±1h08 and 09h29±1h08, respectively, p<0.001). There was no significant difference between the three groups in overall PosaST and CSHQ scores. Conclusions: Caffeine use in the neonatal period did not impair sleep habits later in life and did not lead to increased obstructive sleep apnea scores in prematurely born children compared to those born at term.

RESUMO Objetivo: Avaliar se o uso terapêutico de cafeína para recém-nascidos prematuros se associa a alterações nos hábitos de sono e à presença de apneia obstrutiva do sono na infância. Métodos: Este é um estudo unicêntrico transversal no qual os responsáveis por 87 crianças com idades entre cinco e dez anos, nascidas a termo ou pré-termo e tratadas ou não com cafeína no período neonatal responderam a questionários para triagem de apneia obstrutiva do sono (Pediatric Obstructive Sleep Apnea Screening Tool - PosaST) e para a caracterização dos hábitos de sono (Children's Sleep Habits Questionnaire - CSHQ) de seus filhos. Foram realizados testes de variância (ANOVA) e de regressão linear para verificar possíveis diferenças entre os grupos. Resultados: As crianças nascidas prematuras que foram tratadas com cafeína acordaram significativamente mais tarde nos dias de semana do que as nascidas a termo (09h±00h58 e 07h43±1h15, respectivamente, p=0,022) e tiveram maior tempo total de sono diário também comparadas às nascidas a termo (10h24±1h08 e 09h29±1h08, respectivamente, p<0,001). Não houve diferença significativa entre os três grupos na pontuação geral dos questionários PosaST e CSHQ. Conclusões: O uso de cafeína no período neonatal não prejudicou tardiamente os hábitos de sono e não levou ao aumento dos escores de apneia obstrutiva do sono de crianças nascidas prematuras quando comparadas com crianças nascidas a termo.

Correlation analysis of cardiopulmonary exercise test indices and conditions of overweight patients with obstructive sleep apnea: a retrospective study

ABSTRACT BACKGROUND: The cardiopulmonary function of patients with obstructive sleep apnea (OSA) is significantly lower than that of patients with simple snoring and is significantly related to the severity of OSA. Currently, only a few studies have been conducted on cardiopulmonary exercise testing in overweight patients with OSA. OBJECTIVE: To analyze the correlation between cardiopulmonary exercise test (CPET) indices and the condition of overweight patients with OSA. DESIGN AND SETTING: Retrospective study in Guangdong Provincial Hospital of Chinese Medicine. METHODS: This study included 73 hospitalized overweight patients. The patients were divided into no, mild, moderate, and severe OSA groups. Differences in the CPET indices among the four groups were compared. The correlation between the CPET indices and conditions was analyzed. RESULTS: No, mild, moderate, and severe OSA groups had 18 men and 5 women, 11 men and 3 women, 12 men and 2 women, and 21 men and 1 woman, respectively (P > 0.05). No significant difference was observed in resting pulmonary function among the four groups (P > 0.05). In the CPET, the anaerobic threshold, maximum oxygen uptake, and oxygen pulse were significantly lower in the severe OSA group than those in the normal OSA group (P < 0.05). Moreover, CPET indices negatively correlated with the apnea-hypopnea index. CONCLUSION: Changes in CPET indices occurred earlier than changes in resting pulmonary function in patients with OSA. CPET might be a potential method for evaluating the severity of OSA combined with overweight status.

Hábitos de sono e autoavaliação miofuncional orofacial de crianças com risco para distúrbios respiratórios do sono / Sleep habits and orofacial myofunctional self-assessment of children at risk for sleep breathing disorders

RESUMO Objetivo Identificar e correlacionar as queixas de alterações miofuncionais orofaciais e de risco para distúrbios respiratórios do sono com hábitos de sono na infância. Método Participaram 71 pais ou responsáveis de crianças de 6 a 11 anos, matriculadas em uma escola pública. Foi aplicado um formulário com questões semiestruturadas/anamnese e os protocolos Nordic Orofacial Test-Screening - entrevista, Pediatric Obstructive Sleep Apnea Screening Tool Questionnaire, e Children's Sleep Habits Questionnaire - todos em suas versões em português/Brasil no formato online. Para a análise estatística, realizou-se o teste de correlação de Spearman, considerando o nível de significância de 5%. Resultados 29 crianças eram do sexo feminino (40,8%) e 42 do sexo masculino (59,2%), com média de idade de 8,52 anos. As queixas miofuncionais orofaciais encontradas foram relacionadas às funções de respiração (35,2%), mastigação e deglutição (32,4%) e hábitos deletérios (33,8%). Todas as crianças apresentaram um baixo risco para distúrbios respiratórios do sono e quanto aos hábitos de sono, 23 crianças (32,39%) apresentaram uma somatória menor, enquanto que 48 crianças (67,61%) ultrapassaram 41 pontos. Conclusão Houve correlação entre risco para distúrbios respiratórios do sono em crianças com as queixas de alterações miofuncionais orofaciais e com a baixa qualidade/maus hábitos de sono.

ABSTRACT Purpose To identify orofacial myofunctional complaints and sleep-disordered breathing and correlate them with sleep habits in childhood. Methods The study included 71 parents/guardians of public school children aged 6 to 11 years. They answered a form with semi-structured medical history questions and the Nordic Orofacial Test-Screening - interview, the Pediatric Obstructive Sleep Apnea Screening Tool Questionnaire, and the Children's Sleep Habits Questionnaire - all of them in their Portuguese/Brazilian versions in an online format. Statistical analyses used Spearman's correlation, setting the significance level at 5%. Results There were 29 female children (40.8%) and 42 male ones (59.2%), with a mean age of 8.52 years. The study found orofacial myofunctional complaints related to breathing functions (35.2%), chewing and swallowing (32.4%), and deleterious habits (33.8%). All children were at a low risk of sleep-disordered breathing. As for sleep habits, 23 children (32.39%) had a lower total score, whereas 48 children (67.61%) exceeded 41 points. Conclusion There was a correlation between the risk of sleep-disordered breathing in children with complaints of orofacial myofunctional disorders and poor sleep quality/habits.