Trastornos respiratorios del sueño en Insuficiencia Cardíaca con fracción de eyección reducida

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Introduction: Sleep-disordered breathing (SDB) are highly prevalent in patients with heart failure (HF). The presence of obstructive sleep apnea syndrome (OSA) determines a worse prognosis in these patients. There are questionnaires aimed at evaluating the probability of OSA, although none have been validated in patients with HF. The primary objective of this study was to establish the prevalence of SDB in a cohort of patients with HF and reduced ejection fraction (HFrEF) from the Multidisciplinary HF Unit (UMIC). As a secondary objective, to evaluate the usefulness of the Stop-Bang, Berlin, and 2ABN3M questionnaires for TRS screening in these patients. Methodology: Cross-sectional, observational study, including the active cohort of the UMIC, over 18 years with HFrEF, clinically stable and informed consent. Patients with cognitive, neurological or hearing impairment with limitations when conducting the interview were excluded. Patients with other limiting or uncontrolled sleep disorders, continuous home oxygen therapy requirements, did not enter the study. Berlin, Stop-Bang, and 2ABN3M questionnaires were administered, classifying the population into high-risk, intermediate-risk, and low-risk groups of presenting SDB. All patients underwent outpatient respiratory polygraphy (RP). Descriptive statistics were used to characterize demographic variables, measures of central tendency and dispersion. SPSS statistical software was used. Results: 387 patients were included, 248 men (64.1%), mean age was 63.5 ± 0.6 years. The etiology of HF was ischemic in 41.6% of patients. The body mass index was 29.3 ± 0.3 kg/m2. LVEF was 34.2 ± 0.5, pro-BNP 1233.8 ± 137.6 pg/ml. The results of the questionnaires showed that 52.1% (198) presented a high risk of SDB according to the Berlin questionnaire. With Stop-Bang, 35.9% (139) were high risk, 42.1% (163) intermediate risk, and the remaining 22% (85) low risk. With the 2ABN3M score, 62% (240) were high risk. A total of 156 respiratory polygraphs (40.3% of the population) were performed. The cut-off point to define the presence of sleep apnea was considered to be an AHI >15. 58.3% (91) of the patients presented TRS. Of these, 95% presented obstructive apnea and 5% central apnea with periodic Cheyne-Stokes breathing. A high percentage (26%) presented AHI greater than 30. The sensitivity of the Berlin and Stop-Bang questionnaires was 75.8% and 91.2%, respectively, with a specificity of 53.8% and 24.6%. Regarding the 2ABN3M score, a sensitivity of 71.4% and a specificity of 44.6% were observed. Conclusions: The prevalence of sleep-disordered breathing in patients with HFrEF was high in our cohort and obstructive apnea predominated. Given the high sensitivity (91.2%) of the Stop-Bang questionnaire found in our study, it could be useful as a screening tool for TRS in this type of patient. The importance of investigating this pathology whose clinical presentation can be non-specific and remain underdiagnosed is highlighted.

Introdução: Os distúrbios respiratórios do sono (DRS) são altamente prevalentes em pacientes com insuficiência cardíaca (IC). A presença da síndrome da apneia obstrutiva do sono (SAOS) determina pior prognóstico nesses pacientes. Existem questionários destinados a avaliar a probabilidade de AOS, porém nenhum foi validado em pacientes com IC. O objetivo primário deste estudo foi estabelecer a prevalência de DRS em uma coorte de pacientes com IC e fração de ejeção reduzida (ICFEr) da Unidade Multidisciplinar de IC (UMIC). Como objetivo secundário, avaliar a utilidade dos questionários Stop-Bang, Berlin e 2ABN3M para triagem de SRT nesses pacientes. Metodologia: Estudo transversal, observacional, inclui a coorte ativa da UMIC, maiores de 18 anos com ICFEr, clinicamente estável e consentimento informado. Foram excluídos pacientes com deficiência cognitiva, neurológica ou auditiva com limitações na realização da entrevista. Pacientes com outros distúrbios do sono limitantes ou descontrolados, requisitos de oxigenoterapia domiciliar contínua, não entraram no estudo. Os questionários Berlin, Stop-Bang e 2ABN3M foram aplicados, classificando a população em grupos de alto risco, risco intermediário e baixo risco de apresentar DRS. Todos os pacientes foram submetidos à poligrafia respiratória (PR) ambulatorial. A estatística descritiva foi utilizada para caracterizar as variáveis ​​demográficas, medidas de tendência central e dispersão. Foi utilizado o software estatístico SPSS. Resultados: foram incluídos 387 pacientes, 248 homens (64,1%), com idade média de 63,5 ± 0,6 anos. A etiologia da IC foi isquêmica em 41,6% dos pacientes. O índice de massa corporal foi de 29,3 ± 0,3 kg/m2. FEVE foi de 34,2 ± 0,5, pro-BNP 1233,8 ± 137,6 pg/ml. Os resultados dos questionários mostraram que 52,1% (198) apresentaram alto risco de DRS de acordo com o questionário de Berlim. Com Stop-Bang, 35,9% (139) eram de alto risco, 42,1% (163) de risco intermediário e os restantes 22% (85) de baixo risco. Com a pontuação 2ABN3M, 62% (240) eram de alto risco. Foram realizados 156 polígrafos respiratórios (40,3% da população). O ponto de corte para definir a presença de apneia do sono foi considerado um IAH >15. 58,3% (91) dos pacientes apresentaram SRT. Destes, 95% apresentavam apnéia obstrutiva e 5% apnéia central com respiração Cheyne-Stokes periódica. Uma alta porcentagem (26%) apresentou IAH maior que 30. A sensibilidade dos questionários Berlin e Stop-Bang foi de 75,8% e 91,2%, respectivamente, com especificidade de 53,8% e 24,6%. Em relação ao escore 2ABN3M, observou-se sensibilidade de 71,4% e especificidade de 44,6%. Conclusões: A prevalência de distúrbios respiratórios do sono em pacientes com ICFEr foi alta em nossa coorte, com predominância de apneias obstrutivas. Dada a alta sensibilidade (91,2%) do questionário Stop-Bang encontrado em nosso estudo, ele pode ser útil como uma ferramenta de triagem para ERT nesse tipo de paciente. Ressalta-se a importância da investigação dessa patologia cuja apresentação clínica pode ser inespecífica e permanecer subdiagnosticada.

Prevalence and characteristics of comorbid insomnia and sleep apnea in community population / 中华健康管理学杂志

Objective:To analysis the prevalence and characteristics of comorbid insomnia and sleep disordered breathing (SDB) in community population.Methods:This is a cross-sectional study. Cluster sampling was applied. Community residents in Shantou and Meizhou were investigated during April to May, 2021. Essential information collection, sleep related health investigation, and sleep study were conducted. Insomnia was defined as the insomnia severity index (ISI)≥8. A type Ⅳ wearable intelligent sleep monitor was applied for sleep study. Comorbid insomnia and SDB was defined as both diagnosis of insomnia and SDB. Statistical analysis was conducted by SPSS 25. Prevalence and characteristics of insomnia only, SDB only and comorbid insomnia and SDB were analyzed. Logistic regression was conducted to analyze the relationship between sleep disorders and unrestored sleep, abnormal glucose metabolism, hyperlipidemia, and cardiovascular disease.Results:There were 3 730 residents completed the investigation. The median age was 55.0 (46.0, 63.0) years. The prevalence of insomnia only, SDB only, and comorbid insomnia and SDB were 26.0%, 20.2%, and 10.4% respectively. The incidence of unrestored sleep in insomnia only and comorbid insomnia and SDB were 2.900 times and 3.777 times of that in no insomnia or SDB (both P<0.001); the risk of hyperlipidemia was elevated in insomnia only, SDB only and comorbid insomnia and SDB ( OR=1.553, 1.415, and 1.868; all P<0.05); the risk of cardiovascular disease increased 40.8% in SDB only ( P=0.001), and 42.1% in comorbid insomnia and SDB ( P=0.007), after adjusted by age, sex, body mass index (BMI), smoking, drinking, abnormal glucose metabolism, and hyperlipidemia. Stratified analysis revealed that young female (age<60 years) with normal BMI (<25 kg/m 2) and comorbid insomnia and SDB were associated with higher risk of cardiovascular disease. Female with normal body weight and insomnia only or comorbid insomnia and SDB were associated with higher risk of hyperlipidemia. Conclusions:The prevalence of comorbid insomnia and SDB is high in community population. Patients with comorbid insomnia and SDB present with more significant unrestored sleep, and are correlated with higher risk of hyperlipidemia and cardiovascular diseases.

Is there a relationship between tonsil volume and the success of pharyngeal surgery among adult patients with obstructive sleep apnea?

Abstract Objectives: Hypertrophic palatine tonsils play a role in the blockage of the upper airway, one of the known causes of Obstructive Sleep Apnea (OSA). Therefore, it is possible that there is an association between tonsil size and the success of pharyngeal surgery during OSA treatment. The main objective of this study was to evaluate the relationship between tonsil grade and volume, as well as to establish whether a relationship exists between tonsil size and the success rate of pharyngeal surgery (tonsillectomy and pharyngoplasty with barbed sutures). Methods: This retrospective study includes forty-four adult patients who underwent tonsillectomy and pharyngeal surgery with barbed sutures for the treatment of simple snoring and OSA between January 2016 and September 2019. Patients who had been previously tonsillectomized or those for whom tonsil volume measurement was lacking were excluded. All patients underwent a pre-operative physical exploration at the clinic exam room and a sleep study. Prior to surgery a Drug Induced Sleep Endoscopy (DISE) was performed. Tonsil volume was measured intraoperatively using the water displacement method. The same sleep study was repeated six months following surgery. Results: A significant correlation was found between tonsil grade and volume and between such measurements and the blockage observed at the level of the oropharynx during the DISE. Moreover, an association was observed between tonsil volume, but not tonsil grade, and the success of tonsillectomy and pharyngoplasty with barbed sutures. A tonsil volume greater than 6.5 cm3 was linked to success during pharyngeal surgery. Conclusion: A correlation exists between tonsil grade and tonsil volume. A bigger tonsil volume is associated with a greater success rate of oropharyngeal surgery during treatment of OSA. Level of evidence: Level 3, non-randomized cohort study.

Allergic rhinitis and sleep disorders in children - coexistence and reciprocal interactions

Abstract Objective To review, critically analyze and synthesize knowledge from the international literature regarding the association between allergic rhinitis (AR) and sleep disorders, the impact of AR treatment on children's sleep, and lay the foundation for future research on this topic. Source of data A literature search using PubMed database including original and review articles, systematic reviews and meta-analyses using keywords related to AR, sleep disorders and sleep-disordered breathing. Synthesis of data Sleep is fundamental to health, and its assessment and control of conditions that trigger or aggravate disturbances are of the uttermost importance. Allergic rhinitis (AR) is common in children and may interfere with both their quality of life and quality of sleep. It has emerged as one of the most important risk factors for habitual snoring in children and appeared to increase the risk of Obstructive Sleep Apnea (OSA), with AR severity exhibiting a significant and independent association with pediatric OSA severity. However, in some studies, those associations between AR and OSA in children are not very consistent. Conclusions A substantial level of controversy exists regarding the interactions between AR and OSA in children. Notwithstanding, identifying and treating AR in clinical settings is probably an important step toward improving symptoms and preventing deterioration of sleep quality in children and may improve the severity of underlying OSA. Considering the high prevalence, morbidity, economic and social implications of both AR and sleep problems, it is crucial that healthcare providers improve their understanding of the relationships between those conditions among children.

"Catatrenia": un trastorno del sueño poco conocido: descripción de tres casos clínicos pediátricos / Catathrenia: unknown sleep disorder: report 3 cases in pediatric patients

Catatrenia (gemido nocturno) es una condición rara caracterizada por sonidos irregulares que ocurren durante el sueño. Los comportamientos ocurren intermitentemente durante cualquiera de las dos etapas de sueño, REM o NREM y se caracterizan por gemidos prolongados, a menudo muy fuertes, socialmente perturbadores, durante la expiración. Es poco conocido y espera más definición y estudios terapéuticos. Hay pocos reportes y en su mayoría de pacientes adultos. Se presentan 3 casos en pacientes pediátricos.

Catathrenia (nocturnal groaning) is a rare condition characterized by irregular sounds that occur during sleep. The behaviors occur intermittently during either REM or NREM sleep and are characterized by prolonged, often very loud, socially disruptive groaning sounds during expiration. It is poorly understood and awaits further definition and therapeutic studies. There are few reports mostly adult patients are presented below 3 cases in pediatric patients.

El paciente roncador: evaluación y alternativas terapéuticas / The snoring patient: evaluation and therapeutic alternatives

El ronquido es un problema altamente prevalente, que afecta a millones de personas a nivel mundial. Impacta negativamente en la calidad de vida al afectar la relación de pareja y la calidad de sueño, además de constituir un factor de riesgo cardiovascular. El objetivo de esta revisión es analizar y discutir los aspectos más relevantes de esta condición, desde su etiopatogenia hasta las diferentes alternativas terapéuticas disponibles. En la evaluación del paciente roncador se debe realizar un minucioso examen de nariz, boca, faringe, cuello y esqueleto facial, además de estimar el riesgo de que exista una apnea obstructiva del sueño asociada. Son de utilidad una serie de cuestionarios que permiten asignar puntaje a la sintomatología del paciente y evaluar su impacto en la vida diaria. En general, el estudio deberá incluir exámenes radiológicos, endoscopías de la vía aérea superior (con el paciente despierto y bajo sueño inducido por medicamentos) y estudios del sueño, que se pueden realizar tanto en forma ambulatoria como hospitalizado. Existe una amplia gama de tratamientos disponibles para el ronquido, los que han demostrado una alta efectividad en diferentes subgrupos de pacientes: bajar de peso, dejar de fumar, medicamentos antialérgicos, terapia postural, ejercicios faríngeos, dispositivos de avance mandibular y procedimientos quirúrgicos que van desde intervenciones mínimamente invasivas hasta procedimientos avanzados como cirugía robótica, avances máxilo-mandibulares y la estimulación del nervio hipogloso. Es clave para manejar exitosamente el ronquido el realizar una evaluación detallada del paciente y establecer un plan terapéutico personalizado.

Snoring is a highly prevalent problem, affecting millions of people worldwide. It negatively impacts quality of life by affecting couple relationships and sleep quality, as well as being a cardiovascular risk factor. The aim of this review article is to analyze and discuss the most relevant aspects of this condition, ranging from its etiology and pathogenesis to the different available therapeutic options. When evaluating a snoring patient, a thorough examination of the nose, mouth, pharynx, neck and facial skeleton should be performed, and the risk of having an associated obstructive sleep apnea must be estimated. A series of questionnaires are useful to assign scores to the patient's symptoms and assess their impact on daily life. In general terms, patient evaluation should include radiological examinations, upper airway endoscopies (awake and under drug-induced sleep) and sleep studies, which can be performed both on an outpatient or inpatient basis. There is a wide range of treatments available for snoring, which have shown high effectiveness in different patient subgroups: weight loss, quitting smoking, anti-allergic medications, postural therapy, pharyngeal exercises, mandibular-advancement devices and surgical procedures ranging from minimally invasive interventions to advanced procedures such as robotic surgery, maxillomandibular advancement and hypoglossal nerve stimulation. The cornerstone for a successful snoring management is to perform a detailed patient evaluation and to establish a personalized therapeutic plan.

Long-term Impact of Adenotonsillectomy on the Quality of Life of Children with Sleep-disordered breathing

Abstract Introduction Adenotonsillectomy is the first-line treatment for obstructive sleep apnea secondary to adenotonsillar hypertrophy in children. The physical benefits of this surgery are well known as well as its impact on the quality of life (QoL), mainly according to short-term evaluations. However, the long-term effects of this surgery are still unclear. Objective To evaluate the long-term impact of adenotonsillectomy on the QoL of children with sleep-disordered breathing (SDB). Method This was a prospective non-controlled study. Children between 3 and 13 years of age with symptoms of SDB for whom adenotonsillectomy had been indicated were included. Children with comorbities were excluded. Quality of life was evaluated using the obstructive sleep apnea questionnaire (OSA-18), which was completed prior to, 10 days, 6 months, 12 months and, at least, 18 months after the procedure. For statistical analysis, p-values lower than 0.05 were defined as statistically significant. Results A total of 31 patients were enrolled in the study. The average age was 5.2 years, and 16 patients were male. The OSA-18 scores improved after the procedure in all domains, and this result was maintained until the last evaluation, done 22 ± 3 months after the procedure. Improvement in each domain was not superior to achieved in other domains. No correlation was found between tonsil or adenoid size and OSA-18 scores. Conclusion This is the largest prospective study that evaluated the long-term effects of the surgery on the QoL of children with SDB using the OSA-18. Our results show adenotonsillectomy has a positive impact in children's QoL.

Expansión maxilar rápida para pacientes pediátricos con síndrome de apnea obstructiva del sueño / Rapid maxillary expansion in pediatric patients with obstructive sleep apnea syndrome

RESUMEN: Introducción: El síndrome de apnea obstructiva del sueño (SAOS) es un trastorno respiratorio del sueño frecuente, caracterizado por episodios de obstrucción parcial o total de las vías respiratorias durante el sueño. La expansión maxilar rápida se ha propuesto como un posible tratamiento de esta patología en niños ya que su uso aumentaría el volumen de la vía aérea superior. Sin embargo, su uso para el tratamiento de apnea obstructiva del sueño es controvertido. Métodos: Realizamos una búsqueda en Epistemonikos, la mayor base de datos de revisiones sistemáticas en salud, la cual es mantenida mediante el cribado de múltiples fuentes de información, incluyendo MEDLINE, EMBASE, Cochrane, entre otras. Extrajimos los datos desde las revisiones identificadas, analizamos los datos de los estudios primarios, realizamos un metanálisis y preparamos una tabla de resumen de los resultados utilizando el método GRADE. Resultados y conclusiones: Identificamos seis revisiones sistemáticas que en conjunto incluyeron 23 estudios primarios. Concluimos que no es posible establecer con claridad el efecto del uso de la expansión maxilar sobre el índice de apnea-hipoapnea, eficiencia y tiempo del sueño, y microdespertares por causa respiratoria, debido a que la certeza de la evidencia existente ha sido evaluada como muy baja. No se encontraron estudios que evaluaran los efectos adversos ni la somnolencia diurna de los pacientes sometidos a expansión maxilar.

ABSTRACT: Introduction: Obstructive sleep apnea (OSA) is a frequent sleep disorder characterized by recurrent episodes of complete or partial obstruction of the upper airway during sleep. Since rapid maxillary expansion increases the volume of the upper airway, it has been proposed as a treatment option for OSA in children. However, its use is controversial. Methods: We searched in Epistemonikos, the largest database of systematic reviews in health, which is maintained by screening multiple information sources, including MEDLINE, EMBASE, Cochrane, among others. We extracted data from the systematic reviews, reanalyzed data of primary studies, conducted a meta-analysis and generated a summary of findings table using the GRADE approach. Results and conclusions: We identified six systematic reviews including 23 studies overall. We are uncertain whether rapid maxillary expansion reduces apnea-hypopnea index and micro-awakenings, or improves sleep efficiency and total sleep time as the certainty of the evidence has been assessed as very low. No studies were found that looked at adverse effects or daytime sleepiness.

Evaluation of choroidal thickness measurements in patients with marked nasal septal deviation / Avaliação das medidas da espessura da coroide em pacientes com acentuado desviode septo nasal

Abstract Introduction: Chronic upper airway obstruction due to marked nasal septal deviation may cause chronic hypoxia. It may change the balance of the sympathetic-parasympathetic system and may affect blood flow in the choroid. Objective: To assess choroidal thickness measurements of patients with marked nasal septal deviation. Methods: The patients who had nasal obstruction symptoms diagnosed with marked nasal septal deviation by anterior rhinoscopy and nasal endoscopy and scheduled for septoplasty were included in the study. The control group consisted of age, sex and body mass index-matched healthy individuals. The choroidal measurements at the central fovea and 1000 µm away from the fovea in the nasal and temporal regions were performed using enhanced depth imaging optical coherence tomography. Results: In the study group, 52 eyes of 26 patients with a mean age of 26.34 ± 8.14 years were examined. In the control group, 52 eyes of 28 healthy individuals with a mean age of 26.69 ± 7.84 years were examined. There was no statistically significant difference in terms of choroidal thickness measurements between the groups (p > 0.05). Conclusion: Our results suggest that marked nasal septal deviation may not lead to significant hypoxia and sympathetic activation, resulting in deterioration of the choroidal blood flow and consequent choroidal thickening.

Resumo Introdução: A obstrução crônica das vias aéreas superiores devido a acentuado desvio do septo nasal pode causar hipóxia crônica. Pode alterar o equilíbrio do sistema simpático-parassimpático e afetar o fluxo sanguíneo na coroide. Objetivo: Avaliar as medidas da espessura da coroide em pacientes com acentuado desvio de septo nasal. Método: Foram incluídos no estudo pacientes que apresentavam sintomas de obstrução nasal, com diagnóstico de acentuado desvio de septo realizado por rinoscopia anterior e endoscopia nasal, e com septoplastia programada. O grupo controle consistiu de indivíduos saudáveis pareados por idade, sexo e índice de massa corporal. As medidas da coroide na fóvea central e a 1.000 µm da fóvea nas regiões nasal e temporal foram feitas com tomografia de coerência óptica com imagem de profundidade melhorada. Resultados: No grupo de pacientes, 52 olhos de 26 pacientes com média de 26,34 ± 8,14 anos foram examinados. No grupo controle, 52 olhos de 28 indivíduos saudáveis com média de 26,69 ± 7,84 anos foram examinados. Não houve diferença estatisticamente significante em termos de medidas da espessura da coroide entre os grupos (p > 0,05). Conclusão: Nossos resultados sugerem que desvios do septo nasal acentuados podem não levar à hipóxia significativa e ativação simpática, resultar na deterioração do fluxo sanguíneo coroidal e consequente espessamento da coroide.

Sleep bruxism can be a harbinger of sleep disordered breathing

@#Background & Objective: The mechanism of sleep bruxism (SB) remains an enigma to this day. The saga of SB was kept alive by dental surgeon’s relentless research. Then the sleep physicians stepped in with their polysomnogram (PSG), having a hunch that the answer was in sleep disordered breathing (SDB). In the face of uncertainty and conflicting reports in the relationship between SDB and SDB that followed, we made an alternative approach to investigate the pathogenesis of SB, using CPAP as an experimental tool. The objective was to substantiate that SB can occur during the arousal phase of SDB. Methods: This is a PSG study of SB in 20 consecutive cases of SDB. First night PSG was diagnostic and followed by the second night PSG for Continuous Positive Airway Pressure (CPAP) titration for treatment. We studied every SDB wave and observed its relationship with arousal and SB. An experiment was conducted on the second night, where we used CPAP as a tool, to stent upper airway and toggle the pressure to cause apnea and await the aftermath. Results: Diagnostic PSG of all 20 patients showed a common sequence of events: SDB is followed by brain arousal which is followed by SB, there being an almost one to one relationship between SB and SDB. On the second night’s PSG, toggling CPAP down or up causes SDB to come on or off, respectively. SB followed suit along with arousal. Conclusion: SB commonly occurs during arousal from SDB. CPAP gets rid of SDB and SB.

Gender differences in clinical profile and risk factors for obstructive sleep apnea in a public health care setting

Background: Obstructive Sleep Apnea Syndrome is an increasingly prevalent chronic condition which is, unfortunately, still underdiagnosed. It is peculiarity of this noisy disease that it announces itself to everyone within earshot-except its victims. The intermittent hypoxemia and sleep fragmentation caused by recurrent episodes of upper airway collapse are chiefly responsible for the pathophysiology associated with this condition.Methods: The present study was carried out from January 2014 to August 2015 in a tertiary care government hospital. In this comparative hospital based study 94 patients with Sleep Disordered Breathing and >13 years of age were included. There were 58 males and 36 females in the present study. All patients who satisfied inclusion criteria were studied after taking written consent. Collection of data was carried out with predesigned proforma.Results: Of all the 94 patients who underwent overnight Polysomnographic study,80 patients were diagnosed as Obstructive Sleep Apnea. Risk factor of OSA have gender differences in their distribution. Female patient is older with significantly higher mean age compared to male patients with OSA (52.9 vs 44.7 years). Females are having significantly higher BMI compared to male OSA(38.2 vs 31.5) but neck circumference is higher in males (44.7 Vs 38.1 cm).The prevalence of Smoking and Alcoholism as a risk factor is higher in male patients while endocrine disorder are more common in females. ENT abnormalities are present more or less equally in both the sexes.Conclusions: In the present study females’ patients with Obstructive Sleep Apnea were mainly Older, Obese, Postmenopausal and endocrine disorder like Hypothyroidism were more prevalent while male patients were Smoker, Alcoholic and had higher neck circumference.

Poligrafía pediátrica: experiencia de 6 años / Pediatric polygraphy: a 6-year experience

INTRODUCCIÓN: El diagnóstico precoz de los Trastornos Respiratorios del Sueño (TRS) puede permitir una intervención oportuna. La poligrafía (PG) es una alternativa confiable y accesible en la actualidad. OBJETIVO: Describir y analizar PG de niños > 1 año con sospecha de TRS. PACIENTES Y MÉTODO: Se incluyeron PG de niños y adolescentes > 1 año de edad con sospecha de TRS, desde diciembre de 2011 hasta agosto de 2017 provenientes de la ciudad de Concepcion, Chile. Se recopilaron datos demo gráficos, clínicos y variables poligráficas. Estadística descriptiva, expresando resultados en mediana y rango. Se determinó asociación entre índice de apnea hipopnea (IAH) y saturación mediante Rho de Spearman; considerando significancia p < 0,05. RESULTADOS: Se analizaron 190 estudios. Edad 7,9 años (1,0-20,6), varones 61%. Diagnósticos: enfermedades neuromusculares (ENM) (24,2%), daño pulmonar crónico (21,1%), obstrucción de vía aérea superior (OVAS) (19,5%), daño neurológico (11%), síndrome de Down (8,9%) malformaciones VAS (7,4%), hipoventilación central (3,7%), obesidad (2,6%) y otros (1,6%). El 55,3% de las PG resultaron alteradas; síndrome de apnea hipopnea obstructiva del sueño (SAHOS) leve en 53,3%, moderado 30,5% y severo 16,2%. No se observaron diferencias significativas en IAH entre grupos de patologías (p = 0,032), destacando un mayor IAH en Obesidad 9,0 (0,41-51) y ENM 23,9 (0,4-36,6). Se constató asociación entre IAH y parámetros de saturación; saturación promedio (rho = -0,425; p = 0,001); mínima (rho = -0,654; p = 0,001); y saturación bajo 90% (rho = 0,323; p = 0,001) en la totalidad de la muestra. DISCUSIÓN: Existió un alto porcentaje de SAHOS en pacientes pediátricos de riesgo, en especial en aquellos con ENM y obesidad. La PG es una herramienta accesible e implementable en un hospital público; situación potencialmente extrapolable a otros centros asistenciales.

INTRODUCTION: The early diagnosis of Sleep Disordered Breathing (SDB) may allow proper intervention. Currently, polygraphy (PG) is a reliable and accessible alternative. OBJECTIVE: To describe and analyze the PG of children > 1 year old with suspicion of SDB. PATIENTS AND METHOD: PG of children > 1 year old and adolescents from Concepcion, Chile, with suspected SDB were included, from December 2011 to August 2017. Demographic, clinical and polygraphic variables were collected. It was used descriptive sta tistics, expressing results in median and range. The association between apnea-hypopnea index (AHI) and oxygen saturation was determined by Spearman's Rho, considering significance of p < 0.05. RESULTS: 190 studies were analyzed. Age 7.9 years old (1.0-20.6), 61% males. Diagnosis: neuromuscular disease (NMD) (24.2%), chronic lung damage (21.1%), upper airway obstruction (UAO) (19.5%), neurological damage (11%), Down syndrome (8.9%), upper airway malformations (7.4%), central hypoventilation (3.7%), obesity (2.6%), and others (1.6%). 55.3% were altered PG, with 53.3% of mild Obstructive Sleep Apnea Hypopnea Syndrome (OSAHS), 30.5% moderate, and 16.2% severe. There were no significant differences in AHI between groups of pathologies (p = 0.032), highlighting a higher AHI in obese patients 9 (0.41-51), and those with NMD 23.9 (0.4-36.6). It was found asso ciation between AHI and oxygen saturation parameters: mean saturation (rho = -0.425; p = 0.001), minimum (rho = -0.654; p = 0.001), and oxygen saturation below 90% (rho = 0.323; p = 0.001) in the whole sample. DISCUSSION: There was a high percentage of OSAHS in at-risk pediatric patients, especially in those with NMD and obesity. PG is an accessible and implementable tool in a public hospital, a situation that can potentially be extrapolated to other healthcare centers.

Validation of the Brazilian version of the Pediatric Obstructive Sleep Apnea Screening Tool questionnaire / Validação da versão brasileira do questionário Pediatric Obstructive Sleep Apnea Screening Tool

Abstract Objective: To validate the Pediatric Obstructive Sleep Apnea Screening tool for use in Brazil. Materials and methods: The Brazilian version of this questionnaire, originally validated and tested in the United States, was developed as follows: (a) translation; (b) back-translation; (c) completion of the final version; (d) pre-testing. The questionnaire was applied prior to polysomnography to children aged 3-9 years from October 2015 to October 2016, and its psychometric properties (i.e., validity and reliability) were evaluated. The accuracy was assessed from comparisons between polysomnographic results and corresponding questionnaire scores. Results: Sixty patients were enrolled, and based on polysomnographic findings, 48% patients had normal apnea-hypopnea index, while the remaining 52% met the criteria for obstructive sleep apnea. Minimum O2 saturation level was significantly lower among obstructive sleep apnea children (p = 0.021). Satisfactory concordance was found between individual apnea-hypopnea index and questionnaire scores. Bland-Altman plot-derived bias was 0.1 for the difference between measures, with 5.34 (95% CI: 4.14-6.55) and −5.19 (95%CI: −6.39 to −3.98) for the upper and lower agreement range. Internal consistency derived from Cronbach's alpha was 0.84 (95%CI: 0.78-0.90). Conclusion: The questionnaire was translated to and validated into Brazilian-Portuguese version, and showed good reliability and concordance with apnea-hypopnea index. This questionnaire offers a reliable screening option for sleep-disordered breathing in children.

Resumo Objetivo: Validar o questionário Pediatric Obstructive Sleep Apnea Screening Tool para o seu uso no Brasil. Materiais e métodos: A versão brasileira desse questionário, originalmente validado e testado nos Estados Unidos, foi desenvolvida a partir das seguintes etapas: a) tradução; b) retrotradução; c) conclusão da versão final; d) pré-teste. O questionário foi aplicado previamente ao início da polissonografia em crianças de 3 a 9 anos incluídas no estudo de outubro de 2015 a outubro de 2016. As propriedades psicométricas avaliadas foram validade e confiabilidade. A acurácia foi avaliada pela comparação entre os resultados da polissonografia com o escore do questionário. Resultados: Foram incluídos no estudo 60 pacientes. Conforme a polissonografia, 48% dos pacientes apresentaram índices de apneia e hipopneia normais e 51% apresentaram resultados alterados. A SpO2 mínima foi significativamente menor (p = 0,021) nas crianças com diagnóstico de síndrome de apneia obstrutiva do sono. O índice de apneia e hipopneia apresentou concordância satisfatória com os resultados do questionário. O viés médio de Bland-Altman foi de 0,1 para a diferença entre as medidas, com um limite superior de 5,34 (IC95%4,14 a 6,55) e um limite inferior de -5,19 (IC95%-6,39 a -3,98). A consistência interna do questionário avaliada pelo α de Cronbach foi de 0,84 (IC95%0,78 a 0,90). Conclusão: O questionário foi traduzido e validado adequadamente para a versão em português brasileiro, apresentando boa confiabilidade e concordância com o índice de apneia e hipopneia. Esse questionário oferece uma opção confiável de triagem de distúrbios respiratórios do sono em crianças.

Epidemiological and pathophysiological evidence supporting links between obstructive sleep apnoea and Type 2 diabetes mellitus

Obstructive sleep apnoea (OSA) and Type 2 diabetes mellitus (T2DM) are common diseases. The global prevalence of OSA is between 2% and 7% in general population cohorts. The worldwide prevalence of T2DM among adults (aged 20-79 years) was estimated to be 6.4%. The concurrent presence of OSA and T2DM can be expected in the same patient, given their high prevalence and similar predisposition. We reviewed the overlapping pathophysiology of OSA and T2DM in this article.

Diagnosis and Effect of Maxillary Expansion in Pediatric Sleep-Disordered Breathing / 대한소아치과학회지

The aim of this study was to analyze the changes and improvements in symptoms of sleep-disordered breathing (SDB) using semi-rapid maxillary expansion (SRME) in children with narrow maxilla and SDB symptoms. Subjects were 15 patients with sleep disorder (apnea-hypopnea index, AHI ≥ 1) and narrow maxillary arch between 7 and 9 years of age. Before the SRME was applied, all subjects underwent pediatric sleep questionnaires (PSQ), lateral cephalometry, and portable sleep monitoring before expansion (T0). All subjects were treated with SRME for 2 months, followed by maintenance for the next 3 months. All subjects had undergone PSQ, lateral cephalometry, and portable sleep monitoring after expansion (T1). Adenoidal-nasopharyngeal ratio (ANR), upper airway width and hyoid bone position were measured by lateral cephalometry. The data before and after SRME were statistically analyzed with frequency analysis and Wilcoxon signed rank test. As reported by PSQ, the total PSQ scale was declined significantly from 0.45 (T0) to 0.18 (T1) (p = 0.001). Particularly, snoring, breathing, and inattention hyperactivity were significantly improved (p = 0.001). ANR significantly decreased from 0.63 (T0) to 0.51 (T1) (p = 0.003). After maxillary expansion, only palatopharyngeal airway width was significantly increased (p = 0.035). There was no statistically significant difference in position of hyoid bone after expansion (p = 0.333). From analysis of portable sleep monitoring, changes in sleep characteristics showed a statistically significant decrease in AHI and ODI, and the lowest oxygen desaturation was significantly increased after SRME (p = 0.001, 0.004, 0.023).In conclusion, early diagnosis with questionnaires and portable sleep monitoring is important. Treatment using SRME will improve breathing of children with SDB.

Relationship between Upper Airway and Sleep-Disordered Breathing in Children with Mouth Breathing / 대한소아치과학회지

The most common cause of mouth breathing is obstacles caused by mechanical factors in upper airway. Mouth breathing could be consequently pathological cause of sleep-disordered breathing. Sleep-disordered breathing in children can cause growth disorders and behavioral disorders. The purpose of this study was to investigate relationship between upper airway and sleep-disordered breathing in children with mouth breathing.Twenty boys between 7 – 9 years old who reported to have mouth breathing in questionnaire were evaluated with clinical examination, questionnaires, lateral cephalometric radiographs, and portable sleep testing. This study assessed apnea-hypopnea index (AHI) and oxygen desaturation index (ODI) for the evaluation of sleep-disordered breathing and was done to investigate the correlation between these values and the upper airway width measured by lateral cephalometric radiographs.There was no significant correlation with the size of the tonsils (p = 0.921), but the adenoid hypertrophy was higher in the abnormal group than in the normal group (p = 0.008). In the classification according to AHI and ODI, retropalatal and retroglossal distance showed a statistically significant decrease in the abnormal group compared to the normal group (p = 0.002, p = 0.001). As AHI and ODI increased, upper airway width tended to be narrower. This indicates that mouth breathing could affect the upper airway, which is related to sleep quality.

Effects of Myofunctional Appliance in Children with Sleep-Disordered Breathing: Two Case Reports / 대한소아치과학회지

Sleep-disordered breathing (SDB) induces dysfunction of the orofacial muscles, leading to morphologic alteration of the face and dental malalignment. Early diagnosis and treatment of SDB is required in pediatric patients to ensure normal facial growth. Myofunctional therapy (MFT) is a modality for the treatment of SDB and prefabricated appliances can be used. Herein 2 cases of malocclusion with SDB, in which MFT with a prefabricated appliance was used for orthodontic treatment, have been described. SDB was diagnosed based on clinical symptoms taken by interview and home respiratory polygraphy. In both cases, SDB was improved using prefabricated appliance for MFT. However, resolution of crowding depended on the degree of crowding.

The Role of Modified Expansion Sphincter Pharyngoplasty in Multilevel Obstructive Sleep Apnea Syndrome Surgery

Abstract Introduction Obstructive sleep apnea syndrome (OSAS) is a sleep disorder caused by an excessive narrowing of the pharyngeal airway that also collapses during inspiration, with an important role played by the lateral pharyngeal wall in the development of the obstruction. Objective To describe our surgical experience with modified expansion sphincter pharyngoplasty (MESP) in the management of lateral collapse in upper airway multilevel surgery. Methods A total of 20 patients with moderate to severe OSAS were recruited in the Ear, Nose and Throat (ENT) Department of the University of Palermo, Italy. All of the enrolled patients refused the ventilatory therapy. The subjects were evaluated for snoring, and daytime sleepiness had a clinical evaluation including collection of anthropometric data and ENT examination and rhinofibroscopy with Müller maneuver. The patients undergoing upper airway multilevel surgery and we selected for MESP the patients with an oropharyngeal transverse pattern of collapse at Müller maneuver. Results In the postoperative assessment, all of the patients reported a reduction in snoring scores and daytime sleepiness. We observed a reduction in the mean apnea-hypopnea index (AHI) of 57.5% of the sample, which decreased from a mean value of 41.7 ( ± 21.5) to 17.4 ( ± 8.9) (p< 0.05), with a success rate, according to the Sher criteria, of 65%. We observed very few postoperative complications. Conclusion Modified expansion sphincter pharyngoplasty in multilevel surgical therapy preceded by a careful selection of patients has proven to be effective in treating patients with moderate to severe syndromes.

Trastornos respiratorios del sueño en niños escolares chilenos: prevalencia y factores de riesgo / Prevalence and risk factors for sleep-disordered breathing in chilean schoolchildren

Resumen: Objetivos: Describir la prevalencia de trastornos respiratorios del sueño (TRS) en escolares chilenos y estudiar factores de riesgo asociados. Pacientes y Método: Estudio transversal y descriptivo. Se enviaron cuestionarios a los padres de niños de 1° año básico de colegios de la Región Metropolitana (Santiago), Región del Biobío (Concepción, Chillán, Yumbel) y Región de Magallanes (Porvenir y Puerto Natales). Se consignaron datos antropométricos, desempeño escolar, características del hogar, contaminantes intradomiciliarios, antecedentes médicos y síntomas actuales de asma, rinitis alérgica y dermatitis atópica. Se determinó estado nutricional según zIMC. Se aplicó un cuestionario de sue ño pediátrico validado en español (pediatric sleep questionnaire, PSQ). Resultados: 564 encuestas fueron analizadas, la edad mediana fue 6 años (rango 5 a 9), 44,9% sexo masculino. La prevalencia de TRS fue 17,7% (n = 100): 6% en Vitacura (Metropolitana), 28,7% en Chillán (Biobío) y 36,4% en Puerto Natales (Magallanes) (p = 0,001). El grupo con TRS tuvo mayor proporción de hombres (54,5 vs 42,8%, p = 0,033), menor rendimiento académico (promedio general 6,36 ± 0,48 vs 6,56 ± 0,34, p = 0,001), menor educación superior materna (44,4 vs 69,9%, p = 0,001) y mayor exposición a contaminantes intradomiciliarios que aquellos sin TRS. Posterior al análisis multivariado se mantu vieron como predictor de TRS el haber presentado síntomas de rinitis en últimos 12 meses (OR 4,79; IC 95% 2,20-10,43) y el nivel educacional básico o medio de la madre (OR 3,51; IC 95% 1,53-8,02). Conclusiones: Los escolares chilenos presentan una alta prevalencia de TRS, con diferencias demo gráficas. Se asoció a factores de riesgo social, a factores más específicos de daño pulmonar y a peor cantidad y calidad del sueño.

Abstract: Objectives: To describe the prevalence of sleep-disordered breathing (SDB) in Chilean schoolchil dren and study associated risk factors. Patients and Method: We carried out a transversal and des criptive study. Questionnaires were sent to the parents of children attending first year of elementary school in the Metropolitan Region (Santiago), the Biobío Region (Concepción, Chillán, Yumbel) and the Magallanes Region (Porvenir and Puerto Natales). Anthropometric data, school performan ce, household characteristics, indoor pollutants, medical history, and current symptoms of asthma, allergic rhinitis, and atopic dermatitis were recorded. The nutritional status was determined accor ding to z-BMI. A pediatric sleep questionnaire validated in Spanish (PSQ) was applied. Results: 564 questionnaires were analyzed, the median age was six years (range 5 to 9), 44.9% male. The SDB prevalence was 17.7% (n = 100): 6% in Vitacura (Metropolitan Region), 28.7% in Chillán (Biobío Region), and 36.4% in Puerto Natales (Magallanes Region) (p = 0.001). The group with SDB had a higher proportion of men (54.5 vs 42.8%, p = 0.033), lower academic performance (overall grade point average 6.36 ± 0.48 vs 6.56 ± 0.34, p = 0.001), lower maternal higher education (44.4% vs 69.9%, p = 0.001), and higher exposure to indoor pollutants than those without SDB. After the multivariate analysis, symptoms of rhinitis in the last 12 months (OR 4.79, 95% CI 2.20-10.43) and lower maternal educational level (OR 3.51; 95% CI 1.53-8.02) remained as predictors of SDB. Con clusions: Chilean schoolchildren have a high prevalence of SDB with demographic differences. It was associated with social risk factors, more specific factors of lung damage, and worse sleep quality and quantity.

Study on event related potentials and behavioral characteristics in Go/Nogo task in children with sleep disordered breathing and normal children / 中华行为医学与脑科学杂志

Objective To compare and analyze the event related potential ( ERP ) and behavioral characteristics of sleep disordered breathing ( SDB ) and normal children by the persistent operating test ( CPT-AX) task,and to explore the characteristics and neural mechanism of the cognitive deficits in the left and right brain of school age SDB children. Methods SDB children( n=20) and normal children( n=20) aged 6-8 were selected. All subjects were tested by CPT-AX ( Go/Nogo task) . The ERP behavior of SDB and normal children was recorded,and the N2,P3 amplitude and latency of F3,Fz,F4 lead were compared. Re-sults ( 1) There was no significant difference between SDB group and normal group in behavioral correct number (36. 45±4. 69 vs 35. 00±3. 46),the reaction time ((516. 84±54. 14)ms vs (496. 94±78. 89)ms) and false alarm number( 1. 0 ( 0. 25,3. 75) vs 0. 5 ( 0. 00,3. 00) ) ( all P>0. 05) . ( 2) Comparison of F3,Fz and F4 lead:(1) SDB group:there was no significant difference in Go-N2 amplitude (-7. 75(-12. 03,-1. 09)μV vs (-8. 69±5. 72) μV vs ( -7. 12±4,68)μV) and Nogo-N2 amplitude((-10. 72±4. 49)μV vs (-12. 16±4. 60) μV vs (-11. 78±4. 44) μV) in the left,middle,and right of frontal regions. (2) Control group:there was no statistical difference between F3 and Fz ((-7. 26±3. 18)μV vs (-9. 09±3. 11)μV)(P>0. 05) in N2 amplitude and there was no statistical difference between F3 and F4((-7. 26±3. 18) μV vs (-6. 10±3. 36)μV) in N2 amplitude (P>0. 05). The N2 amplitude difference of Fz and F4 ((-9. 09± 3. 11) μV vs (-6. 10±3. 36)μV ) was statistically significant (P<0. 05). The Nogo-N2 amplitude differ-ence between F3 and Fz((-14. 05±3. 31) μV vs (-15. 50±3. 52) μV) was no statistically significant (P>0. 05) . The left frontal lobe Nogo-N2 amplitude was significantly higher than that of the right frontal lobe ((-14. 05±3. 31) μV vs-11. 75(-12. 68,-10. 43) μV) (P<0. 05),and the center of the frontal lobe No-go-N2 was significantly higher than that in the right frontal lobe((-15. 50±3. 52) μV vs -11. 75(-12. 68,-10. 43) ) ,and the difference was statistically significant (P<0. 05) . ( 3) There was no significant difference in N2 latency,P3 amplitude and latency between F3,Fz and F4 leads (P>0. 05). Conclusion Compared with normal children,SDB children showed no left dominant brain region while dealing with the same conflict monitoring tasks. It is suggested that left hemisphere activation is poor and function is incompatible. Left fron-tal lobe injury in SDB is more obvious than that in the right side.