Practice parameters for the respiratory indications for polysomnography in children

Perioperative Delta Weight and Pediatric Obstructive Sleep Apnea Resolution after Adenotonsillectomy

OBJECTIVE(S)

The first-line treatment for pediatric obstructive sleep apnea (OSA) is adenotonsillectomy. Post-operative weight gain is a well-documented phenomenon. We hypothesized that higher peri-adenotonsillectomy delta weight correlates with lower rates of OSA resolution in pediatric patients.

METHODS

This was a retrospective cohort study consisting of 250 patients from 2 to 17 years of age at a tertiary academic medical center between January 2021 and December 2022. Polysomnography results and body mass index (BMI) changes were collected through the electronic health record. Univariate and multivariate logistical regression analyses were performed, adjusting for confounding factors.

RESULTS

Perioperative delta weight and pre-operative baseline AHI values were significant predictors of residual OSA. For every 1-kilogram gain in weight, the odds of residual OSA (AHI >5) increase by 6.0% (OR = 1.06, 95% CI = 1.02-1.10, p < 0.002), and the odds of residual severe OSA (AHI > 10) increase by 8% (OR = 1.08, 95% CI = 1.04-1.12, p < 0.001). Increased AHI, Black/African American race, and male sex were also factors associated with incomplete OSA resolution.

CONCLUSIONS

Increased peri-adenotonsillectomy delta weight is associated with higher rates of residual OSA in children. Patients and families should be counseled about appropriate weight loss and control methods before adenotonsillectomy.

LEVEL OF EVIDENCE

IV Laryngoscope, 134:4141-4147, 2024.

Pediatric Postoperative Outcomes for Severe and Very Severe Obstructive Sleep Apnea Syndrome

OBJECTIVE

To determine if increasing obstructive sleep apnea syndrome (OSAS) severity, as determined by preoperative polysomnography data, is an independent risk for respiratory complications and level of follow-up care after adenotonsillectomy or tonsillectomy.

METHODS

A retrospective analysis of patients ≤21 years of age with severe OSAS (obstructive apnea-hypopnea index [OAHI] >10) undergoing adenotonsillectomy or tonsillectomy. Patients were categorized based on preoperative polysomnography data (PSG). Outcome measures including respiratory complications were collected via chart review. Logistic regression was used in the analysis of all parameters, and Wilcoxon Rank Sum tests were used for analysis of both OAHI and oxygen saturation nadir as continuous variables. All surgeries were performed at Johns Hopkins Hospital, a tertiary care center.

RESULTS

We identified 358 patients with severe OSAS who had adenotonsillectomy or tonsillectomy. OAHI >40 and oxygen saturation nadir <80% were significantly associated with postoperative respiratory complications. Increasing OAHI and O2 saturation <80% was each associated with unplanned continuous positive airway pressure (CPAP) initiations postoperatively. There was no association between hypercarbia and presence of any complications.

CONCLUSION

Patients with very severe OSAS (preoperative OAHI ≥40) as determined by preoperative PSG may be at higher risk of developing respiratory complications postoperatively. However, there does not appear to be a linear association with increasing severity of OAHI on regression analysis. Further research is needed to understand factors associated with complications in severe and very severe OAHI.

LEVEL OF EVIDENCE

4 Laryngoscope, 134:4148-4155, 2024.

Congenital Central Hypoventilation Syndrome and Disorders of Control of Ventilation

Congenital disorders of ventilatory control typically manifest as central apneas, periodic breathing, and hypoventilation in the neonatal period, but some may present at a later age. Obstructive apneas may be the initial presentation, and some may have associated autonomic nervous system dysfunction. Individuals with these disorders can have absent or impaired ventilatory and arousal responses to hypoxemia and hypercapnia. This article discusses the presentation, pathophysiology, evaluation, and management of congenital central hypoventilation syndrome, rapid-onset obesity with hypothalamic dysfunction, hypoventilation, and autonomic dysregulation (ROHHAD) syndrome, Prader-Willi syndrome, and myelomeningocele.

Care of the Pediatric Patient for Ambulatory Tonsillectomy With or Without Adenoidectomy: The Society for Ambulatory Anesthesia Position Statement

The landscape of ambulatory surgery is changing, and tonsillectomy with or without adenoidectomy is one of the most common pediatric surgical procedures performed nationally. The number of children undergoing tonsillectomy on an ambulatory basis continues to increase. The 2 most common indications for tonsillectomy are recurrent throat infections and obstructive sleep-disordered breathing. The most frequent early complications after tonsillectomy are hemorrhage and ventilatory compromise. In areas lacking a dedicated children's hospital, these cases are managed by a nonpediatric specialized anesthesiologist and general otolaryngology surgeon. In response to requests from our members without pediatric fellowship training and/or who care for pediatric patients infrequently, the Pediatric Committee of the Society for Ambulatory Anesthesia (SAMBA) developed a position statement with recommendations for the safe perioperative care of pediatric patients undergoing tonsillectomy with and without adenoidectomy in freestanding ambulatory surgical facilities. This statement identifies children that are more likely to experience complications and to require additional dedicated provider time that is not conducive to the rapid pace and staffing ratios of many freestanding ambulatory centers with mixed adult and pediatric practices. The aim is to provide health care professionals with practical criteria and suggestions based on the best available evidence. When high-quality evidence is unavailable, we relied on group consensus from pediatric ambulatory specialists in the SAMBA Pediatric Committee. Consensus recommendations were presented to the Pediatric Committee of SAMBA.

Adenotonsillectomy outcomes in children with down syndrome and obstructive sleep apnea: a single center study

PURPOSE

This study aimed to evaluate polysomnographic (PSG) outcomes of tonsillectomy and adenoidectomy (T&A) in children with Down Syndrome (DS) and OSA, and the difference in PSG outcomes of T&A between children with DS and age- and gender-matched normally developing (non-DS) children.

METHODS

This was a single center retrospective study that included children with DS and OSA who underwent T&A and had pre-operative and post-operative PSG. The baseline and the differences of pre- and post-operative PSG variables were compared with those of an age- and gender-matched group of non-DS children.

RESULTS

Forty-eight children with DS were included in the study; the median age was 5 years (IQR 5.5), 58% were males, and the median BMI was 18.2 (IQR 3.3). There was statistically significant improvement noted between pre-operative and post-operative OAHI 17.9 ± 26.7 vs. 9.1 ± 13.6 (p = 0.022) and non-REM AHI 13.9 ± 19.7 vs. 6.9 ± 14.2 (p = 0.027). However, there were no significant changes in sleep architecture, oxygen desaturation nadir, or CO2 levels. 54.2% of the DS children continued to have moderate to severe OSA after T&A. Univariate logistic regression showed that for every 1% increase in oxygen desaturation nadir, the odds of having residual moderate or severe OSA decreased by 28% (p = 0.002) compared to the cured and mild OSA groups. There was no significant pre- and post-operative differences in PSG variables noted in 16 children with DS compared to age- and gender-matched non-DS children.

CONCLUSION

Despite the overall significant reduction of OAHI in children with DS and OSA who underwent T&A, there was a residual moderate to severe OSA in about half of the included children. Oxygen desaturation nadir was a predicting factor for persistent moderate to severe OSA. There were no significant pre- and post-operative PSG differences in between DS children compared to non-DS children.

ATS core curriculum 2023. Pediatric pulmonary medicine: Respiratory disorders in infants

The American Thoracic Society Core Curriculum updates clinicians annually in pediatric pulmonary disease. This is a summary of the Pediatric Pulmonary Medicine Core Curriculum presented at the 2023 American Thoracic Society International Conference. The respiratory disorders of infancy discussed in this year's review include: the care of the patient with bronchopulmonary dysplasia in the neonatal intensive care unit, clinical phenotypes and comorbidities; diffuse lung disease; pulmonary hypertension; central and obstructive sleep apnea. The care of infants with respiratory disorders often poses significant challenges to the general pediatric pulmonologist, sleep clinician, and neonatologist. This review aims to highlight the most clinically relevant aspects of the evaluation, management, and outcomes of infants with these key respiratory disorders, while emphasizing the importance of multidisciplinary care. Furthermore, this document summarizes essential aspects of genetic testing, novel imaging and treatment modalities, and includes multiple resources for clinical practice.

Current Pediatric Tertiary Care Practices Following Adenotonsillectomy: An Update

OBJECTIVE

Adenotonsillectomy is a common procedure performed in children, and the practice patterns at academic centers have been evolving with the publication of updated societal guidelines. In this study, we assess perioperative practice patterns at tertiary care children's hospitals for children undergoing adenotonsillectomy.

METHODS

A cross-sectional 18-question survey distributed in July of 2022 recruited responses through August 25, 2022. The division chiefs of 70 pediatric otolaryngology groups at tertiary care children's hospitals across the United States and Canada were surveyed. Division chiefs submitted survey responses on behalf of the group practice patterns for children undergoing adenotonsillectomy. The main measure was survey responses from the division chiefs of pediatric otolaryngology reporting group practice.

RESULTS

The survey response rate was 46%. Eighty-eight percent of groups reported an official adenotonsillectomy admission policy. Commonly reported admission criteria included age (93%) and obesity (59%). Eighty-eight percent of groups defined severe obstructive sleep apnea as apnea-hypopnea index ≥10. Only 41% of groups required a child to be observed sleeping on room air prior to ambulatory discharge. Ninety-seven percent of groups reported routinely obtaining preoperative polysomnography in a variety of clinical settings.

CONCLUSIONS

Many children's hospitals report an official admission policy following adenotonsillectomy. Despite a decade passing since the initial publication of the American Academy of Otolaryngology-Head and Neck Surgery clinical practice guidelines, there remains great variability in the practice patterns for both preoperative polysomnography and postoperative monitoring and admission. These results highlight an opportunity for an improved unified approach to perioperative pediatric adenotonsillectomy practice.

LEVEL OF EVIDENCE

5 Laryngoscope, 134:2931-2936, 2024.

The latest on positive airway pressure for pediatric obstructive sleep apnea

INTRODUCTION

Obstructive sleep apnea (OSA) is an important and evolving area in the pediatric population, with significant sequelae when not adequately managed. The use of positive airway pressure (PAP) therapy is expanding rapidly and is being prescribed to patients with persistent OSA post adenotonsillectomy as well as those children who are not surgical candidates including those with medical complexity.

AREAS DISCUSSED

This article provides a state-of-the-art review on the diagnosis of pediatric OSA and treatment with positive airway pressure (PAP). The initiation of PAP therapy, pediatric interface considerations, PAP mode selection, administration and potential complications of PAP therapy, factors influencing PAP adherence, the use of remote ventilation machine downloads, considerations surrounding follow-up of patients post PAP initiation and evaluation of weaning off PAP will be reviewed. The literature search was conducted via PubMed, Cochrane Library and Google Scholar databases through to March 2024.

EXPERT OPINION

Further research is required to address barriers to adherence. Further innovation of home monitoring devices for both the diagnosis and assessment of OSA is required, given the limited pediatric sleep medicine resources in several countries worldwide.

Sleep duration, sleep efficiency, and amyloid β among cognitively healthy later-life adults: a systematic review and meta-analysis

BACKGROUND

Abnormal amyloid β (Aβ) deposits in the brain are a hallmark of Alzheimer's disease (AD). Insufficient sleep duration and poor sleep quality are risk factors for developing AD. Sleep may play a role in Aβ regulation, but the magnitude of the relationship between sleep and Aβ deposition remains unclear. This systematic review examines the relationship between sleep (i.e., duration and efficiency) with Aβ deposition in later-life adults.

METHODS

A search of PubMed, CINAHL, Embase, and PsycINFO generated 5,005 published articles. Fifteen studies met the inclusion criteria for qualitative syntheses; thirteen studies for quantitative syntheses related to sleep duration and Aβ; and nine studies for quantitative syntheses related to sleep efficiency and Aβ.

RESULTS

Mean ages of the samples ranged from 63 to 76 years. Studies measured Aβ using cerebrospinal fluid, serum, and positron emission tomography scans with two tracers: Carbone 11-labeled Pittsburgh compound B or fluorine 18-labeled. Sleep duration was measured subjectively using interviews or questionnaires, or objectively using polysomnography or actigraphy. Study analyses accounted for demographic and lifestyle factors. Based on 13 eligible articles, our synthesis demonstrated that the average association between sleep duration and Aβ was not statistically significant (Fisher's Z = -0.055, 95% CI = -0.117 ~ 0.008). We found that longer self-report sleep duration is associated with lower Aβ (Fisher's Z = -0.062, 95% CI = -0.119 ~ -0.005), whereas the objectively measured sleep duration was not associated with Aβ (Fisher's Z = 0.002, 95% CI = -0.108 ~ 0.113). Based on 9 eligible articles for sleep efficiency, our synthesis also demonstrated that the average association between sleep efficiency and Aβ was not statistically significant (Fisher's Z = 0.048, 95% CI = -0.066 ~ 0.161).

CONCLUSION

The findings from this review suggest that shorter self-reported sleep duration is associated with higher Aβ levels. Given the heterogeneous nature of the sleep measures and outcomes, it is still difficult to determine the exact relationship between sleep and Aβ. Future studies with larger sample sizes should focus on comprehensive sleep characteristics and use longitudinal designs to better understand the relationship between sleep and AD.

Efficacy of adenotonsillectomy on pediatric obstructive sleep apnea and related outcomes: A narrative review of current evidence

This review summarizes the current evidence in systematic reviews, meta-analysis and randomized controlled trials regarding adenotonsillectomy outcomes in pediatric obstructive sleep apnea (OSA). Adenotonsillectomy is effective in treating OSA in children without co-morbidities, despite postoperative residual OSA remained in roughly half of these children. For children with comorbidities such as Down syndrome, Prader-Willi syndrome, sickle cell disease, or cerebral palsy, adenotonsillectomy is less effective and associated with more postoperative complications than that in children without comorbidities. For other OSA-related outcomes, evidence from meta-analyses and randomized controlled trials confirm adenotonsillectomy results in improvement of subjective OSA-related outcomes (e.g. symptoms, behaviors, and quality of life), but the results in objective OSA-related outcomes (e.g. cardiometabolic parameters or neurocognitive functions) are inconsistent. Future studies should focus on randomized controlled trials comparing objective OSA-related outcomes and the long-term effects of adenotonsillectomy in children with OSA.

Screening for obstructive sleep apnea (OSA) in children and adolescents with obesity: A scoping review of national and international pediatric obesity and pediatric OSA management guidelines

Obstructive sleep apnea (OSA) is a prevalent complication that affects up to 60% of children and adolescents with obesity. It is associated with poorer cardiometabolic outcomes and neurocognitive deficits. Appropriate screening and intervention for OSA are crucial in the management of children with obesity. We performed a scoping review of international and national pediatric obesity (n = 30) and pediatric OSA (n = 10) management guidelines to evaluate the recommendations on OSA screening in pediatric obesity. Sixteen (53%) of the pediatric obesity guidelines had incorporated OSA screening to varying extents, with no consistent recommendations on when and how to screen for OSA, and subsequent management of OSA in children with obesity. We provide our recommendations that are based on the strength and certainty of evidence presented. These include a clinical-based screening for OSA in all children with body mass index (BMI) ≥ 85th percentile or those with rapid BMI gain (upward crossing of 2 BMI percentiles) and the use of overnight polysomnography to confirm the diagnosis of OSA in those with high clinical suspicion. We discuss further management of OSA unique to children with obesity. An appropriate screening strategy for OSA would facilitate timely intervention that has been shown to improve cardiometabolic and neurocognitive outcomes.

The Role of Telemedicine in Children with Obstructive Sleep Apnea Syndrome (OSAS): A Review of the Literature

The advent of telemedicine marked a significant turning point in the healthcare landscape, introducing a revolutionary approach to the delivery of medical care. Digital technologies easily connect health professionals and patients, overcoming geographical and temporal barriers. Telemedicine has been used for sleep disorders including obstructive sleep apnea syndrome (OSAS) since the mid-1990s. In adult patients with OSAS, telemedicine is helpful both for consultation and diagnosis, the latter obtained through remote recordings of oxygen saturation and further parameters registered with telemonitored respiratory polygraphy or polysomnography. Remote monitoring can be used to follow up the patient and verify adherence to daily treatments including continuous positive airway pressure (CPAP). In children, studies on the role of telemedicine in OSAS are scarce. This narrative review aims to describe the application of telemedicine in children with obstructive sleep apnea syndrome (OSAS), assessing its advantages and disadvantages. In patients with OSA, telemedicine is applicable at every stage of patient management, from diagnosis to treatment monitoring also in pediatric and adolescent ages. While telemedicine offers convenience and accessibility in healthcare delivery, its application in managing OSAS could be associated with some disadvantages, including limitations in physical examination, access to diagnostic tools, and education and counseling; technology barriers; and privacy concerns. The adoption of a hybrid approach, integrating both in-office and virtual appointments, could effectively meet the needs of children with OSAS. However, more studies are needed to fully assess the effectiveness and safety of telemedicine in the pediatric population.

Assessment of obstructive sleep apnoea in children: What are the challenges we face?

There is an increasing demand for the assessment of sleep-disordered breathing in children of all ages to prevent the deleterious neurocognitive and behaviour consequences of the under-diagnosis and under-treatment of obstructive sleep apnoea [OSA]. OSA can be considered in three broad categories based on predominating contributory features: OSA type 1 [enlarged tonsils and adenoids], type II [Obesity] and type III [craniofacial abnormalities, syndromal, storage diseases and neuromuscular conditions]. The reality is that sleep questionnaires or calculations of body mass index in isolation are poorly predictive of OSA in individuals. Globally, the access to testing in tertiary referral centres is comprehensively overwhelmed by the demand and financial cost. This has prompted the need for better awareness and focussed history taking, matched with simpler tools with acceptable accuracy used in the setting of likely OSA. Consequently, we present key indications for polysomnography and present scalable, existing alternatives for assessment of OSA in the hospital or home setting, using polygraphy, oximetry or contactless sleep monitoring.

Does REM AHI Predict Persistent OSA After Pediatric Adenotonsillectomy?

OBJECTIVE

The utility of REM AHI in managing pediatric obstructive sleep apnea (OSA) is not fully understood. This study aimed to evaluate the relationship of preoperative REM AHI to postoperative persistence of OSA in children who underwent adenotonsillectomy.

METHODS

This retrospective chart review identified children under the age of 18 years that received an adenotonsillectomy for OSA and a preoperative and postoperative polysomnogram. Children with craniofacial or neuromuscular disorders or a tracheostomy were excluded. The primary outcome was the postoperative persistence of OSA, defined as a postoperative obstructive apnea-hypopnea index (oAHI) ≥ 1.5 events/hour. REM-predominant OSA was defined as a ratio of REM/NREM AHI ≥ 2. REM AHI minus NREM AHI and REM AHI minus oAHI helped to identify patients with a larger distribution of REM AHI.

RESULTS

A total of 353 patients were included. Postoperative persistent OSA was seen in 232 (65.7%) children. The preoperative REM AHI, REM AHI minus NREM AHI, and REM AHI minus oAHI of children with persistent OSA did not differ significantly from children with resolution of OSA. Rates of persistence were not different between those with REM-predominant OSA and REM-independent OSA (63.8% vs 70.7%, P = .218).

CONCLUSION

This study suggests that preoperative REM AHI may be a poor predictor of OSA persistence after adenotonsillectomy. Further study is needed to help characterize how pre-operative REM AHI should impact clinicians' decision making, family counseling and recommendations.

Risk of sleep problems in a clinical sample of children who stutter

PURPOSE

Previous studies have shown increased prevalence of sleep problems among people who stutter. However, there is a lack of knowledge about what these sleep problems may specifically be.

METHOD

Fifty children who stutter (CWS) from 6;0 to 12;9 years of age and 50 age- and gender-matched controls participated in this study. Parents did not report coexisting conditions, excepting stuttering and/or sleep problems. Sleep problems were investigated using a standardized questionnaire answered by parents. The questionnaire shows cut-off scores to identify the risk of sleep problems as a whole and on each one of the six subscales (i.e., disorders of initiating and maintaining sleep; sleep breathing disorders; disorders of arousal; sleep-wake transition disorders; disorders of excessive somnolence; and sleep hyperhidrosis). Scores above the cut-off are suggestive of sleep problems.

RESULTS

Twenty-one CWS scored higher than the cut-off on the sleep questionnaire compared to only two controls (p < 0.00001). Specifically, CWS scored higher than controls in disorders of initiating and maintaining sleep, sleep-wake transition disorders (especially jerking, sleep talking, and bruxism), and disorders of excessive somnolence (p < 0.0083, corrected for multiple comparisons).

DISCUSSION

Compared to controls, CWS are at greater risk for sleep problems, which are not consequences of coexisting disorders. Present findings confirm and expand current knowledge about sleep problems in CWS. Directionality possibilities and clinical implications are discussed.

Evaluation of Sleep Difficulties in Egyptian Children with Down Syndrome: A Case-Control Study

Sleep is a major concern in Down syndrome children. Obstructive sleep apnea, delayed sleep onset, night-time and early awakenings have been reported contributing to the cognitive and behavioral outcomes. The aim is to evaluate sleep related difficulties in Down syndrome young children. A questionnaire of sleep related difficulties was translated and validated into Arabic language then was filled in by caregivers of 45 Down syndrome and 48 normal children. The questionnaire consisted of sections related to snoring, breathing difficulties, mouth breathing, upper respiratory tract infections, sleep position, restless sleep and frequent awakening, and daytime behavior. The results show highly significant differences between the total and subtotal questionnaire scores with higher scores in the control group. The questionnaire has a good reliability. Test-retest reliability of the questionnaire revealed a significant positive correlation in the total questionnaire and all the subitems except for the 7th subitem of the daytime behavior which showed no significant correlation. The questionnaire showed 100% sensitivity and 70.8% Specificity with at cut-off value of 8.5. The sleep related difficulties questionnaire has good psychometric properties and could detect significant sleep problems in Down syndrome children.

Supplementary Information

The online version contains supplementary material available at 10.1007/s12070-023-04090-9.

The Feasibility of Screening for Sleep Problems in Early Childhood Education Programs

OBJECTIVES

Assess the feasibility and staff experience of screening for behavioral sleep problems (BSP) and sleep disordered breathing (SDB) in early childhood education (ECE) settings; examine BSP/SDB prevalence and caregivers' knowledge/attitudes, perception of child sleep problems, and sleep health engagement in this sample.

METHOD

Eight staff representatives from four ECE sites involved with sleep problem screening procedures within a larger RCT on ECE sleep health, discussed their experiences in a focus group; transcript content reviewed. A random subset of caregiver-child dyads (n = 59) from the four ECE sites completed sleep problem measures (BSP: Children's Sleep Habits Questionnaire, Short form [SF-CSHQ], Tayside Children's Sleep Questionnaire [TCSQ-sleep disturbance and difficulty] and SDB: Pediatric Sleep Questionnaire [PSQ], in addition to RCT measures (Parent Knowledge/Attitude/Self-efficacy/Beliefs survey and sleep health goals). Caregiver sleep health engagement was measured by the sleep health goals set.

RESULTS

ECE staff reported sleep problem screening as self-explanatory and doable but sometimes administratively burdensome. BSPs were identified in 44% (SF-CSHQ) to 63% (TCSQ-sleep disturbance) of children; SDBs in 13%. Only 11% of caregivers endorsed their child having a sleep "difficulty" (TCSQ). Sleep health goals were set by 85% of caregivers; 63% employed educational materials' language.

CONCLUSION

Sleep problem screening in ECE is feasible, and problems are elicited. While caregivers readily engage in setting healthy sleep goals, few endorse sleep as difficult. ECE education could improve caregiver understanding/recognition of sleep problems.

Quality measures for the care of pediatric patients with obstructive sleep apnea: 2023 update after measure maintenance

Obstructive sleep apnea (OSA) is the most common respiratory sleep disorder in the United States in preschool and school-aged children. In an effort to continue addressing gaps and variations in care in this patient population, the American Academy of Sleep Medicine (AASM) Quality Measures Task Force performed quality measure maintenance on the Quality Measures for the Care of Pediatric Patients with Obstructive Sleep Apnea (originally developed in 2015). The Quality Measures Task Force reviewed the current medical literature, including updated clinical practice guidelines and systematic literature reviews, existing pediatric OSA quality measures, and performance data highlighting remaining gaps or variations in care since implementation of the original quality measure set to inform any potential revisions to the quality measures. These revised quality measures have been implemented in the AASM Sleep Clinical Data Registry (Sleep CDR) to capture performance data and encourage continuous quality improvement, specifically in outcomes associated with diagnosing and managing OSA in the pediatric population.

CITATION

Lloyd RM, Crawford T, Donald R, et al. Quality measures for the care of pediatric patients with obstructive sleep apnea: 2023 update after measure maintenance. J Clin Sleep Med. 2024;20(1):127-134.

Polysomnographic parameters and clinical risk factors predicting postoperative respiratory complications in children undergoing supraglottoplasty

STUDY OBJECTIVES

Postoperative respiratory complications (PORCs) can occur following supraglottoplasty (SGP) for obstructive sleep apnea. However, there are very limited data on risk factors associated with these complications. This study aims to evaluate the occurrence of PORC in children undergoing SGP and to assess clinical factors and polysomnographic parameters predicting these complications.

METHODS

A retrospective study was performed in children with laryngomalacia who underwent SGP with preoperative polysomnography.

RESULTS

400 children who underwent SGP met the criteria for entry into the analysis with a total of 416 surgeries with corresponding preoperative polysomnography. The median age (interquartile range) at the time of polysomnography was 0.4 (0.2, 1.5) years. A total of 96 (23.1%) PORCs were noted. Compared with those without complications, children with PORCs had a higher proportion of congenital heart disease (P < .05), higher median obstructive apnea-hypopnea index (obstructive AHI; median 16.0 vs 11.4 events/h; P < .01), and lower median oxygen saturation (SpO2) (P < .001). The unadjusted odd ratio indicated an increased risk of PORCs in children with congenital heart disease (odds ratio 1.66; P < .05) and those with an obstructive AHI > 10 events/h (odds ratio 2.06; P < .01). Multiple regression analysis demonstrated that an obstructive AHI > 10 events/h was the only independent risk factor for PORCs (P < .05).

CONCLUSIONS

In our cohort of children with laryngomalacia undergoing SGP, those with underlying congenital heart disease, higher obstructive AHI, and lower SpO2 were more likely to develop PORCs. Only children with an obstructive AHI > 10 events/h were at significantly increased risk for PORCs following SGP. Preoperative polysomnography is useful in preoperative planning in children undergoing SGP.

CITATION

Kanavitoon S, Ngamprasertwong P, Gurbani N, et al. Polysomnographic parameters and clinical risk factors predicting postoperative respiratory complications in children undergoing supraglottoplasty. J Clin Sleep Med. 2024;20(1):9-16.

Common Childhood Sleep Problems and Disorders

BACKGROUND

Sleep insufficiency and disturbances affect the physical, cognitive, and emotional well-being of children.

OBJECTIVE

To perform a narrative review on common sleep problems and disorders encountered in primary care for children and adolescents.

METHODS

A search of English literature in the Pubmed and Google Scholar databases published from 1 January 2000 till 31 October 2021 was conducted with the keywords "sleep problem" or "sleep disorder" and "child" or "adolescent". Findings in the relevant articles and cross-references were compiled.

RESULTS

Sleep duration and habits of children vary widely across countries with different cultural backgrounds. There is robust evidence to support the promotion of positive bedtime routines and sleep hygiene as prevention and management of sleep problems. 15-70% of parents reported their children having sleep problems or disturbances. Common sleep complaints include difficulty in initiation or maintenance of sleep, abnormal behaviors or movements, snoring or abnormal breathing, and excessive daytime sleepiness. Comprehensive sleep history and a sleep diary are the first steps for evaluation. Home video and actigraphy may be used as preliminary tools to confirm the history. Referrals to a sleep specialist for polysomnography and other tests are needed, if suspecting specific sleep disorders, such as obstructive sleep apnea and narcolepsy, needs timely intervention. Common sleep disorders in different age groups encountered in primary care are reviewed with clinical features, indications for evaluation, and treatment options summarized.

CONCLUSION

Screening for sleep problems shall be an integral part of each child's health care visit. It is important to evaluate the impact of common sleep problems and identify specific sleep disorders for early intervention to prevent long-term adverse outcomes.

A commentary on broader use of preoperative polysomnography in pediatric patients with obstructive sleep apnea

Obstructive sleep apnea (OSA), characterized by repeated episodes of prolonged airway obstruction during sleep, is a common condition in pediatric patients ages 2 to 6. Polysomnography (PSG) testing can be used to assess the severity of OSA or obstructive sleep-disordered breathing prior to adenotonsillectomy. The article "Characteristics and Frequency of Children With Severe Obstructive Sleep Apnea Undergoing Elective Polysomnography" by Bains et al. notes the variability in guidelines regarding indication for PSG amongst professional societies, making it difficult for physicians to determine which patients require PSG. The purpose of this commentary is to emphasize and elaborate on the potential benefit for preoperative PSG in all patients considering adenotonsillectomy as presented by the aforementioned article. With broader use of preoperative PSG, providers would have a more accurate assessment of OSA severity and to aid in surgical decision-making and postoperative planning.

Sleep and Circadian Disturbances in Children With Neurodevelopmental Disorders

Sleep problems are highly prevalent in those with neurodevelopmental disorders (NDDs). We propose this is secondary to multiple factors that directly and indirectly negatively impact sleep and circadian processes in those with NDDs, which in turn, further perturbs development, resulting in a "developmental and sleep/circadian-related encephalopathy." In this review, we discuss select NDDs with known or suspected sleep and circadian phenotypes. We also highlight important considerations when evaluating and treating sleep and circadian disorders in these populations.

Association and risk factors of pediatric pulmonary hypertension with obstructive sleep apnea: A national study utilizing the Kids' Inpatient Database (KID)

STUDY OBJECTIVE

Assess the prevalence of and risk factors for pediatric pulmonary hypertension (PH) in the 2016 Kids' Inpatient Database (KID), including obstructive sleep apnea (OSA) and obesity.

METHODS

Retrospective cross-sectional cohort study utilizing 6,081,132 weighted pediatric discharges from the 2016 KID. Study variables included age, length of stay, mortality, gender, hospital region, primary payer, race, median household income for patient's ZIP code, OSA, central sleep apnea (CSA), obesity, Down syndrome, sickle cell disease (SCD), thalassemia, congenital heart disease (CHD), hypertension, asthma and chronic lung disease of prematurity (CLDP). PH was the primary outcome of interest. Bivariate and multivariable logistic regression models were utilized with odds ratios and 95 % confidence intervals.

RESULTS

The mean age was 3.76 years, the mean hospital length of stay was 3.85 days, 48.9 % were male, 52.6 % had government health insurance, 51.0 % were White, 16.1 % were Black, 21.1 % were Hispanic, 5.0 % were Asian or Pacific Islander, 0.80 % were Native American and 6.1 % identified as "other". The prevalence of PH was 0.21 % (12,777 patients). There were 37,631 patients with OSA and the prevalence of PH among this cohort was 3.3 %, over 10x greater than the overall prevalence of PH in the 2016 KID (0.21 %). Risk factors associated with PH included CLDP, CHD, Down syndrome, asthma, OSA, CSA, hypertension, SCD, obesity, race/ethnicity, government insurance, age, male gender (p < 0.0001), and hospital region (p = 0.0002).

CONCLUSIONS

Several risk factors were independently associated with PH, such as OSA, CSA, obesity, asthma, and insurance status. Prospective multi-institutional studies are needed to assess the relationships between these risk factors, severity metrics, and causative links in the development of PH; in addition to identifying children with OSA who are most likely to benefit from cardiopulmonary screening prior to adenotonsillectomy.

LEVEL OF EVIDENCE

Level III.

Sleep in pediatric neuromuscular disorders

Sleep disordered breathing (SDB) is prevalent among children with neuromuscular disorders (NMD). The combination of respiratory muscle weakness, altered drive, and chest wall distortion due to scoliosis make sleep a stressful state in this population. Symptomatology can range from absent to snoring, nocturnal awakenings, morning headaches, and excessive daytime sleepiness. Sequelae of untreated SDB includes cardiovascular effects, metabolic derangements, and neurocognitive concerns which can be compounded by those innate to the NMD. The clinician should have a low threshold for obtaining polysomnography and recognize the nuances of individual disorders due to disproportionately impacted muscle groups such as hypoventilation in ambulating patients from diaphragm weakness. Non-invasive or invasive ventilation are the mainstay of treatment. In this review we explore the diagnosis and treatment of SDB in children with various NMD.

Resting-State Cerebral Hemodynamics is Associated With Problem Behaviors in Pediatric Sleep-Disordered Breathing

OBJECTIVE

Untreated sleep-disordered breathing (SDB) is associated with problem behaviors in children. The neurological basis for this relationship is unknown. We used functional near-infrared spectroscopy (fNIRS) to assess the relationship between cerebral hemodynamics of the frontal lobe of the brain and problem behaviors in children with SDB.

STUDY DESIGN

Cross-sectional.

SETTING

Urban tertiary care academic children's hospital and affiliated sleep center.

METHODS

We enrolled children with SDB aged 5 to 16 years old referred for polysomnography. We measured fNIRS-derived cerebral hemodynamics within the frontal lobe during polysomnography. We assessed parent-reported problem behaviors using the Behavioral Response Inventory of Executive Function Second Edition (BRIEF-2). We compared the relationships between (i) the instability in cerebral perfusion in the frontal lobe measured fNIRS, (ii) SDB severity using apnea-hypopnea index (AHI), and (iii) BRIEF-2 clinical scales using Pearson correlation (r). A p < .05 was considered significant.

RESULTS

A total of 54 children were included. The average age was 7.8 (95% confidence interval, 7.0-8.7) years; 26 (48%) were boys and 25 (46%) were Black. The mean AHI was 9.9 (5.7-14.1). There is a statistically significant inverse relationship between the coefficient of variation of perfusion in the frontal lobe and BRIEF-2 clinical scales (range of r = 0.24-0.49, range of p = .076 to <.001). The correlations between AHI and BRIEF-2 scales were not statistically significant.

CONCLUSION

These results provide preliminary evidence for fNIRS as a child-friendly biomarker for the assessment of adverse outcomes of SDB.

Management of obstructive sleep apnea syndrome type 1 in children and adolescents - A French consensus

This document is the outcome of a group of experts brought together at the request of the French Society of Sleep Research and Medicine to provide recommendations for the management of obstructive sleep apnea syndrome type 1 (OSA1) in children. The recommendations are based on shared experience and published literature. OSA1 is suspected when several nighttime respiratory symptoms related to upper airway obstruction are identified on clinical history taking. A specialist otolaryngologist examination, including nasofibroscopy, is essential during diagnosis. A sleep study for OSA1 is not mandatory when at least two nighttime symptoms (including snoring) are noted. Therapeutic management must be individualized according to the location of the obstruction. Ear, nose, and throat (ENT) surgery is often required, as hypertrophy of the lymphoid tissues is the main cause of OSA1 in children. According to clinical findings, orthodontic treatment generally associated with specialized orofacial-myofunctional therapy might also be indicated. Whatever treatment is chosen, follow-up must be continuous and multidisciplinary, in a network of trained specialists.

Long-term non-invasive ventilation in children: Transition from hospital to home

Long-term non-invasive ventilation (NIV) is an accepted therapy for sleep-related respiratory disorders and respiratory insufficiency or failure. Increase in the use of long-term NIV may, in part, be driven by an increase in the number of children surviving critical illness with comorbidities. As a result, some children start on long-term NIV as part of transitioning from hospital to home. NIV may be used in acute illness to avoid intubation, facilitate extubation or support tracheostomy decannulation, and to avoid the need for a tracheostomy for long-term invasive ventilation. The decision about whether long-term NIV is appropriate for an individual child and their family needs to be made with care. Preparing for transition from the hospital to home involves understanding how NIV equipment is obtained and set-up, education and training for parents/caregivers, and arranging a plan for clinical follow-up. While planning for these transitions is challenging, the goals of a shorter time in hospital and a child living well at home with their family are important.

Outpatient Utilization of the RAM Cannula for Nasal Noninvasive Ventilation in Children

Background

The RAM cannula® consists of nasal prongs that can be used to administer oxygen, continuous, and bilevel positive airway pressure therapies. Studies have reported the efficacy and utility of the RAM cannula in inpatients requiring noninvasive ventilation (NIV); however, there is limited literature on the use of the RAM cannula to provide NIV in the outpatient setting.

Objectives

This study aimed to describe the clinical features and outcomes of children who used NIV via RAM cannula in the outpatient setting.

Design

Retrospective review.

Methods

We conducted a retrospective review of children treated with outpatient NIV via RAM cannula at our institution between January 2010 and March 2023. The analyzed data included age, diagnoses, indications for NIV, duration of RAM cannula use, complications, and outcomes at 6 months.

Results

We identified 20 patients who used outpatient NIV via RAM cannula during the study period. The median age at initiation of NIV via RAM cannula was 5.8 months (IQR 2.4-9.9 months). Indications for NIV included sleep-related hypoventilation (15%), restrictive lung disease (25%), obstructive sleep apnea (45%), and chronic respiratory failure (50%), with 6 patients having ⩾2 indications for NIV. RAM cannula was utilized for inability to tolerate conventional NIV interfaces (80%), to alleviate dyspnea (60%), and to avoid tracheostomy (55%). Patients used NIV via RAM cannula for a median duration of 7.7 months (IQR 3.7-20.6 months). Patient outcomes included ongoing usage of RAM cannula (55%), changing to conventional NIV interfaces (15%) or oxygen (10%), weaning off respiratory support (5%), and death (15%). There were no complications related to using the RAM cannula.

Conclusion

Our study demonstrates the utility of outpatient NIV via RAM cannula in children with a variety of diagnoses until clinical improvement or tolerance of conventional interfaces, and for avoidance of tracheostomy.

International Consensus Statement on Obstructive Sleep Apnea

BACKGROUND

Evaluation and interpretation of the literature on obstructive sleep apnea (OSA) allows for consolidation and determination of the key factors important for clinical management of the adult OSA patient. Toward this goal, an international collaborative of multidisciplinary experts in sleep apnea evaluation and treatment have produced the International Consensus statement on Obstructive Sleep Apnea (ICS:OSA).

METHODS

Using previously defined methodology, focal topics in OSA were assigned as literature review (LR), evidence-based review (EBR), or evidence-based review with recommendations (EBR-R) formats. Each topic incorporated the available and relevant evidence which was summarized and graded on study quality. Each topic and section underwent iterative review and the ICS:OSA was created and reviewed by all authors for consensus.

RESULTS

The ICS:OSA addresses OSA syndrome definitions, pathophysiology, epidemiology, risk factors for disease, screening methods, diagnostic testing types, multiple treatment modalities, and effects of OSA treatment on multiple OSA-associated comorbidities. Specific focus on outcomes with positive airway pressure (PAP) and surgical treatments were evaluated.

CONCLUSION

This review of the literature consolidates the available knowledge and identifies the limitations of the current evidence on OSA. This effort aims to create a resource for OSA evidence-based practice and identify future research needs. Knowledge gaps and research opportunities include improving the metrics of OSA disease, determining the optimal OSA screening paradigms, developing strategies for PAP adherence and longitudinal care, enhancing selection of PAP alternatives and surgery, understanding health risk outcomes, and translating evidence into individualized approaches to therapy.

Alternatives to Polysomnography for the Diagnosis of Pediatric Obstructive Sleep Apnea

Diagnosis of obstructive sleep apnea (OSA) in children with sleep-disordered breathing (SDB) requires hospital-based, overnight level I polysomnography (PSG). Obtaining a level I PSG can be challenging for children and their caregivers due to the costs, barriers to access, and associated discomfort. Less burdensome methods that approximate pediatric PSG data are needed. The goal of this review is to evaluate and discuss alternatives for evaluating pediatric SDB. To date, wearable devices, single-channel recordings, and home-based PSG have not been validated as suitable replacements for PSG. However, they may play a role in risk stratification or as screening tools for pediatric OSA. Further studies are needed to determine if the combined use of these metrics could predict OSA.

Lost to follow-up: Post-operative polysomnography in at-risk, pediatric obstructive sleep apnea

OBJECTIVE

Analyze adherence to AASM recommendations for post-operative polysomnography in eligible pediatric patients.

STUDY DESIGN

Retrospective Cohort.

SETTING

Tertiary, Outpatient Sleep Lab.

METHODS

We conducted a retrospective analysis of pediatric patients, ages 1-17, previously diagnosed with moderate-severe obstructive sleep apnea that completed a surgical intervention. Chart review included demographic data, a co-morbidity of interest, the presence of an otolaryngology, primary care, or sleep medicine encounter, time to follow-up, the presence of a post-operative polysomnography, time to post-operative polysomnography, and the presence of an annual follow-up with any provider.

RESULTS

Of the 373 patients, 67 patients met inclusion criteria. Fifty-nine followed-up with any provider, with 21 completing post-operative polysomnography. Patients with residual or recurrent symptoms (p < 0.01) and all patients with severe obstructive sleep apnea (p = 0.04) were more likely to complete post-operative polysomnography (PSG). Sub-analysis across at-risk categories (isolated moderate, isolated severe, moderate & a co-morbidity, and severe & a co-morbidity) revealed patients with severe obstructive sleep apnea & a co-morbidity completed a follow-up PSG more often than isolated moderate obstructive sleep apnea (p = 0.01). There was a difference in follow-up with sleep medicine across at-risk categories (p < 0.01).

CONCLUSION

Recurrent symptoms and increasing disease severity were associated with obtaining post-operative polysomnography. However, variability existed for which patients completed post-operative polysomnography. We speculate an inconsistent standard across disciplines, inadequate post-operative obstructive sleep apnea management education, and uncoordinated systemic processes contribute to this discrepancy. Our findings support a standardized, multi-disciplinary care pathway for the management of at-risk, pediatric obstructive sleep apnea.

The impact of obstructive sleep apnea screening guidelines in a population-based, midwestern cohort of children with Down Syndrome

OBJECTIVE

/Background: The high rate of obstructive sleep apnea (OSA) in Down Syndrome (DS) is well described in the literature. The impact of the 2011 screening guidelines has not been fully evaluated. The objective of this study is to evaluate the impact of the 2011 screening guidelines on the diagnosis and treatment of obstructive sleep apnea (OSA) in a community cohort of children with Down Syndrome.

PATIENTS/METHODS

This is a retrospective, observational study conducted on 85 individuals with DS born between 1995 and 2011 in a nine-county region of southeast Minnesota. The Rochester Epidemiological Project (REP) Database was used to identify these individuals.

RESULTS

/Conclusions: Sixty-four percent of the patients with DS had OSA. Post guideline publication, the median age at OSA diagnosis was higher (5.9 years; p = 0.003) and polysomnography (PSG) was used more often to establish the diagnosis. Most children underwent first line therapy with adenotonsillectomy. There was a high degree of residual OSA after surgery (65%). There were trends post guideline publication towards increased PSG use and for consideration of additional therapy beyond adenotonsillectomy. The use of PSG before and after first line treatment for OSA in children with DS is needed due to the high rate of residual OSA. Unexpectedly, in our study, the age at OSA diagnosis was higher after guideline publication. Continued assessment of clinical impact and refinement of these guidelines will be of benefit to individuals with DS given the prevalence and longitudinal nature of OSA in this population.

Obstructive sleep apnea screening in children with asthma

RATIONALE

Obstructive sleep apnea is highly prevalent in children with asthma, particularly in obese children. The sleep-related breathing disorder screening questionnaire has low screening accuracy for obstructive sleep apnea in children with asthma. Our goal was to identify the questions on the sleep-related breathing disorder survey associated with obstructive sleep apnea in children with asthma.

METHODS

Participants completed the survey, underwent polysomnography and their body mass index z-score was measured. Participants with survey scores above 0.33 were considered high risk for obstructive sleep apnea and those with an apnea-hypopnea index ≥ 2 events/h classified as having obstructive sleep apnea. Logistic regression was used to examine the association of each survey question and obstructive sleep apnea. Positive and negative predictive values were calculated to estimate screening accuracy.

RESULTS

The prevalence of obstructive sleep apnea was 40% in our sample (n = 136). Loud snoring, morning dry mouth, and being overweight were the survey questions associated with obstructive sleep apnea. The composite survey score obtained from all 22 questions had positive and negative predictive values of 51.0% and 65.5%, while the combined model of loud snoring, morning dry mouth, and being overweight had positive and negative predictive values of 60.3% and 77.6%. On the other hand, the body mass index z-score alone had positive and negative predictive values of 76.3% and 72.2%.

CONCLUSIONS

The body mass index z-score is useful for obstructive sleep apnea screening in children with asthma and should be applied routinely given its simplicity and concerns that obstructive sleep apnea may contribute to asthma morbidity.

Effect of orthopedic and functional orthodontic treatment in children with obstructive sleep apnea: A systematic review and meta-analysis

Orthodontic treatment is suggested in growing individuals to correct transverse maxillary deficiency and mandibular retrusion. Since, as a secondary effect, these orthodontic procedures may improve pediatric obstructive sleep apnea (OSA), this systematic review assessed their effects on apnea-hypopnea index (AHI) and oxygen saturation (SaO2). Twenty-five (25) manuscripts were included for qualitative synthesis, 19 were selected for quantitative synthesis. Five interventions were analyzed: rapid maxillary expansion (RME, 15 studies), mandibular advancement (MAA, five studies), myofunctional therapy (MT, four studies), and RME combined with MAA (one study). RME produced a significant AHI reduction and minimum SaO2 increase immediately after active treatment, at six and 12 months from baseline. A significant AHI reduction was also observed six and 12 months after the beginning of MAA treatment. MT showed positive effects, with different protocols. In this systematic review and meta-analysis of data from mainly uncontrolled studies, interceptive orthodontic treatments showed overall favorable effects on respiratory outcomes in pediatric OSA. However, due to the low to very low level of the body evidence, this treatment cannot be suggested as elective for OSA treatment. An orthodontic indication is needed to support this therapy and a careful monitoring is required to ensure positive improvement in OSA parameters.

Inter-hospital cardiorespiratory telemonitoring of newborns and infants: a wellworking example of a hub and spoke network

BACKGROUND

Patients who experience cardiorespiratory events usually have to be moved to specialized centers to perform cardiorespiratory studies. To avoid the transfer of these patients to specialized centers, a network has been created based on an interchange system, where the recordings were uploaded in unspecialized centers (spokes) and downloaded by the Sleep Disorders Breathing (SDB) Center (hub) to be analyzed.

METHODS

The inter-hospital network was established in November 2008. Initially only 3 non-tertiary hospitals in the Tuscany Region joined the network. Currently, 12 Tuscany hospitals are included.

RESULTS

From November 2008 to December 2020, 625 recordings were collected belonging to 422 infants. No recurrent life-threatening episode or infant death occurred in the study population and none of the infants needed to be readmitted or be moved to a tertiary center, except infants who underwent home monitoring. The discharge diagnoses belong to the following categories: apnoea, respiratory problem of the newborn, syncope, gastroesophageal reflux, altered consciousness, transient loss of consciousness and cyanosis.

CONCLUSIONS

This study shows that the inter-hospital network is an efficient system that allows accurate and safe management of infants at risk for apnoea, bradycardia, and hypoxemia to remain in unspecialized centers, avoiding unnecessary transfers of patients and over - hospitalizations.

Use of Polysomnography and CPAP in Children Who Received Adenotonsillectomy, US 2004 to 2018

OBJECTIVES

1) To determine the prevalence polysomnogram (PSG) and continuous positive airway pressure (CPAP) therapy use in children who received adenotonsillectomy (AT) for sleep symptoms. 2) To identify health care disparities in these regards.

STUDY DESIGN

Retrospective database analysis.

METHODS

This study used data from Optum (Health Services Innovation Company) to identify 92,490 children who received AT for sleep symptoms between 2004 and 2018. Prevalence of preoperative PSG and postoperative PSG and CPAP were described. Clinical and demographic characteristics were compared between children who had preoperative PSG and those who did not. Characteristics of children with trisomy 21 (T21) were compared to assess PSG and CPAP use in a high-risk cohort. Predictive modeling was used to identify patient characteristics associated with postoperative PSG and CPAP use.

RESULTS

Preoperative PSG was obtained in 5.5% of children overall and 33.2% of children with T21. Male sex, obesity, other medical comorbidities, non-White race/ethnicity, and higher parent education were associated with preoperative PSG. Fewer than 3% of children received postoperative PSGs and approximately 3% went on to receive CPAP therapy postoperatively. Multiple logistic regression showed that age at surgery, male sex, obesity, other medical comorbidities, non-White race/ethnicity, and higher parent education were associated with postoperative PSG and CPAP use.

CONCLUSIONS AND RELEVANCE

This study described the prevalence pre-AT PSG use and post-AT PSG and CPAP use for persistent symptoms and identified sleep health care disparities in these regards. These results show that increased, equitable access to PSG is needed in children, particularly in the workup and treatment persistent symptoms after AT.

LEVEL OF EVIDENCE

4 Laryngoscope, 133:184-188, 2023.

Nasal cannula use during polysomnography in children aged under three with suspected sleep apnea

OBJECTIVE

Early diagnosis of obstructive sleep apnea (OSA) in children is important. The use of a nasal cannula as an airflow sensor during polysomnography has not been evaluated in younger children. The study aims to evaluate the use of nasal cannula in detecting respiratory events in children under three with suspected OSA during daytime nap studies.

METHODS

A total of 185 patients were prospectively included. Respiratory events were scored using nasal cannula alone, thermistor alone, and both methods simultaneously as the airflow sensor. Agreement and diagnostic accuracy were assessed.

RESULTS

One hundred and seventy-two children were finally analyzed and 110 (64.0%) presented OSA. Total sleep time with an uninterpretable signal was longer with the nasal cannula than with the thermistor (17.8% vs 1.9%; p < 0.001), and was associated with poor sensor tolerance and adenotonsillar hypertrophy. In the estimation of the apnea-hypopnea index, the nasal cannula showed lower agreement than the thermistor with the joint use of the two sensors (intraclass correlation coefficient: 0.79 vs 0.996 with thermistor). Compared with the thermistor, the nasal cannula presented lower sensitivity for detecting OSA (82.7% vs 95.5%) and a lower negative predictive value (76.5% vs 92.4%). Overall, fewer children were diagnosed with severe OSA with the nasal cannula (19.8% vs 30.8% with the thermistor, and 32.6% with both).

CONCLUSIONS

In children under the age of three, the ability of the nasal cannula to detect obstructive events was relatively low. Therefore, other non-invasive measurements for identifying respiratory events during sleep may be of additional value.

Associations of respiratory mechanic instability with respiratory parameters in pediatric patients with obstructive sleep apnea syndrome

OBJECTIVES

This study aimed to identify the effectiveness of respiratory mechanic instability (RMI) in the diagnosis of pediatric obstructive sleep apnea syndrome (OSAS). We sought to evaluate the correlations of RMI with sleep-related parameters and determine the effectiveness of using RMI for diagnosing OSAS in children.

METHODS

Children who underwent polysomnography (PSG) for various reasons were enrolled in this study. Patients' clinical and PSG data at two university hospitals were reviewed retrospectively. During PSG, RMI parameters were automatically calculated according to the phase relationship between thoracic and abdominal movement signals.

RESULTS

Among 263 children who underwent PSG, 183 (70.4%) were diagnosed with OSAS (apnea-hypopnea index [AHI] ≥ 1). RMI parameters were higher in the OSAS group than in the control group. They also tended to increase with disease severity. RMI scores were well correlated with respiratory parameters, showing a stronger correlation in those with moderate or severe OSAS without central apnea. Areas under the receiver operating characteristics curves (AUROCs) of RMI indicators were over 0.65. The percentage of RMI in stage duration showed the highest value of the AUROCs.

CONCLUSION

Paradoxical thoraco-abdominal movement assessed by RMI provides additional information. It may be useful in diagnosing OSAS in children.

What is the association between secondhand smoke (SHS) and possible obstructive sleep apnea: a meta-analysis

BACKGROUND

Association between smoking and sleep apnea is well-known from previous studies. However, the influence of secondhand smoke (SHS), which is a potential risk factor of obstructive sleep apnea (OSA), remains unclear. Our aim was to investigate the relationship between SHS and OSA using a meta-analysis.

MATERIALS AND METHODS

For the meta-analysis, searches were performed in MEDLINE, EMBASE, and Web of Science databases on January 10, 2022, by combining various keywords including "SHS exposure" and "OSA". Data were extracted using defined inclusion and exclusion criteria. Fixed-effects model meta-analyses were used to pool risk ratio (RR) estimates with their 95% confidence intervals (CI). I² was used to assess heterogeneity. Moreover, we performed subgroup meta-analyses of children-adults, and smoker fathers and mothers.

RESULTS

In total, 267 articles were obtained through an electronic search. Twenty-six articles were included in our analysis according to the inclusion and exclusion criteria. We found evidence of an association between SHS exposure and possible OSA (RR 1.64, 95% CI 1.44-1.88). The results of the subgroup analyses showed that children passive smokers (RR 1.84, 95% CI 1.60-2.13) were at greater risks of possible OSA than adult passive smokers (RR 1.35, 95% CI 1.21-1.50). Also, significant differences were observed in mothers with smoking exposure (RR 2.61, 95% CI 1.62-4.21, p < 0.0001), as well as in fathers with smoking exposure (RR 2.15, 95% CI 0.98-4.72, p = 0.06).

SHORT CONCLUSION

Our meta-analysis confirmed that SHS exposure is significantly associated with OSA. In the subgroup analyses, the association of SHS and possible OSA was significant in both children and adults, as well as in smoker mothers and fathers.

Diagnosis and management of sleep disorders in Prader-Willi syndrome

Clinical experience and a growing body of evidence suggest that sleep disturbances are common in people with Prader-Willi syndrome (PWS). PWS is a rare neuroendocrine disorder characterized by early hypotonia and feeding difficulties; developmental delays; endocrinopathies; and behavioral concerns, especially rigidity, anxiety, and behavioral outbursts. PWS is also characterized by decreased resting energy expenditure and transition to hyperphagia and obesity. We propose that, for many people with PWS, clinical diagnosis and management of sleep disorders is an unmet need. We present current information to suggest disordered sleep is a significant burden for individuals with PWS and often overlooked. While central and obstructive sleep apnea are more widely recognized in PWS, other sleep disorders have increasingly gained recognition, including hypersomnia, narcolepsy-like phenotypes, and insomnia. Sleep disorders can impact behavior, cognition, and quality of life and health for individuals with PWS. Our goal is to bring sleep disorders to the forefront of therapeutic intervention for patients with PWS. This paper presents a review of the literature and recommendations for clinical practice based on published research and our clinical experience as sleep specialists, geneticists, psychiatrists, pediatricians, otolaryngologists, and pulmonologists with extensive experience with this patient population. We recommend that management of sleep be considered an integral part of successful medical management of PWS. Further research concerning sleep problems in PWS is urgently needed to develop best practices and work toward a consensus statement for medical management to meet the needs of people with PWS.

CITATION

Duis J, Pullen LC, Picone M, et al. Diagnosis and management of sleep disorders in Prader-Willi syndrome. J Clin Sleep Med. 2022;18(6):1687-1696.

Assessment of Central Sleep Apnea Events in Children with Sleep-Disordered Breathing

Purpose

To determine the prevalence of central apnea (CA) events and central sleep apnea (CSA) in children with sleep-disordered breathing (SDB) and to assess the effect of tonsillectomy and adenoidectomy (TA) on CSA in children with obstructive sleep apnea (OSA). Material and Methods. The medical charts of children with SDB were reviewed to obtain information on past medical history, polysomnography (PSG) findings, and surgical management. Counts and indexes of obstructive apnea, obstructive hypopnea, and central apnea were evaluated before and after TA. The prevalence of CSA and the effect of age, gender, obesity, and comorbid conditions on CSA were assessed in children with SDB as well as in children with PSG proven OSA.

Results

Seven hundred twelve children with SDB (age range: 1 to 18 yrs, mean: 5.8 ± 3.4) were identified. CA events occurred in 640 of 712 (89.5%) patients. Of the 712 patients, 315 (44.2%) met the criteria for the diagnosis of CSA. CSA was more prevalent in toddlers and preschoolers (p < 0.001). Obese children had a higher prevalence of CSA compared to nonobese children (p < 0.001). The prevalence of CSA in patients with OSA was 45.4%. The number of CA events, CAI, and OAHI after TA was less than that of before TA (p < 0.001). Residual CSA after TA occurred in 20 children (26%).

Conclusion

Central apnea events and central sleep apnea occur in children who present to a pediatric otolaryngology clinic for evaluation of sleep disordered breathing. Central sleep apnea and obstructive sleep apnea both improve after tonsillectomy and adenoidectomy.

Outcomes of Pediatric Titration Sleep Studies Following Empirical Use of Positive Airway Pressure and the Effect on Adherence to Therapy

BACKGROUND

Obstructive sleep apnea (OSA) is diagnosed through polysomnography (PSG) testing and commonly treated with positive airway pressure (PAP). The initial recommended treatment for pediatric OSA is adenotonsillectomy, but when this is contraindicated or ineffective, PAP is the next option. Children followed in our pediatric sleep disorders center who are diagnosed with OSA and meet criteria for therapy are empirically prescribed a PAP device, usually auto-titrating PAP (APAP), to avoid delays in therapy. Titration PSG is performed later to assess adequacy of settings. The aims of this study were to determine how often PSG titration results in changes to empirically prescribed PAP and to assess adherence to therapy before and after PSG titration.

METHODS

A retrospective medical records review was completed for children diagnosed with OSA, prescribed PAP, and had a titration PSG within a 5-y consecutive period of 2008-2012. Demographic data, type of device, pressure settings, and adherence downloads were reviewed. Adherence was assessed before and after titration overall and compared for those who did and did not have therapy changes following titration.

RESULTS

The study included 121 participants. Median age at the time of the diagnostic PSG was 11 (interquartile range [IQR] 8-14) y. Most (106, 88%) were initially prescribed APAP. Median length of time between initial and follow-up PSG was 6.4 (IQR 4.4-10.1) months. The majority (94, 78%) had therapy changes following titration. Overall, adherence percentage > 4 h per night was not significantly increased post titration (P = .47). There were no statistically significant differences in adherence between those who had therapy changes and those who did not (P = .26).

CONCLUSIONS

Titration studies resulted in therapy modifications for most children. Adherence was not increased following the titration PSG. Changes in therapy did not result in increased adherence. Titration PSGs may optimize empirically prescribed settings.

Pediatric Obstructive Sleep Apnea: Update for the Primary Care Provider

Pediatric obstructive sleep apnea (OSA) is a common entity that can cause both daytime and nighttime issues. Children with symptoms should be screened for OSA. If possible, polysomnography should be performed to evaluate symptomatic children. Depending on the severity, first-line options for treatment of pediatric OSA may include observation, weight loss, medication, or surgery. Even after adenotonsillectomy, about 20% of children will have persistent OSA. Sleep endoscopy and cine MRI are tools that may be used to identify sites of obstruction, which in turn can help in the selection of site-specific treatment.

Comparing in-lab full polysomnography for diagnosing sleep apnea in children to home sleep apnea tests (HSAT) with an online video attending technician

The main study aim was to compare the validity of children sleep apnea data obtained from standard polysomnography (PSG) to a home sleep apnea test (HSAT) accompanied by an attending online video technician. Our study population was comprised of 100 children, 54 boys and 46 girls, ages 3–11 (average age 5.2, SD 1.2) assigned randomly either to in-lab full PSG or to a HSAT with real-time, online technical support to rule out obstructive sleep apnea (OSA). A t test comparison did not yield significant differences between data obtained from the in-lab PSG and HSAT with real-time, online, technical support for any of the following measures: Apnea–Hypopnea Index, Oxygen desaturation Index, baseline O2, or minimum O2 parameters. However, a significant difference was found for time in bed and total sleep time, which was significantly longer in the HAST. Online HSAT can provide a safe, convenient and a reliable way to perform sleep studies in young children for diagnosing OSA in their familiar home environment.

Trends in Diagnosing Obstructive Sleep Apnea in Pediatrics

Obstructive sleep apnea in children has been linked with behavioral and neurocognitive problems, impaired growth, cardiovascular morbidity, and metabolic consequences. Diagnosing children at a young age can potentially prevent significant morbidity associated with OSA. Despite the importance of taking a comprehensive sleep history and performing thorough physical examination to screen for signs and symptoms of OSA, these findings alone are inadequate for definitively diagnosing OSA. In-laboratory polysomnography (PSG) remains the gold standard of diagnosing pediatric OSA. However, there are limitations related to the attended in-lab polysomnography, such as limited access to a sleep center, the specialized training involved in studying children, the laborious nature of the test and social/economic barriers, which can delay diagnosis and treatment. There has been increasing research about utilizing alternative methods of diagnosis of OSA in children including home sleep testing, especially with the emergence of wearable technology. In this article, we aim to look at the presentation, physical exam, screening questionnaires and current different modalities used to aid in the diagnosis of OSA in children.

Utility of polysomnography for management of chronic invasive mechanical ventilation in children

OBJECTIVE

With advances in technology, pediatric patients are sent home with chronic invasive mechanical ventilation (CIMV). Ventilation optimization and preparation for weaning are essential processes, however, there is no standard approach to weaning and titrating ventilator settings in children. There is little information in the literature on the utility of polysomnography (PSG) in weaning and titration of CIMV. Our objective is to review the role of PSG on titration and weaning of CIMV in children.

METHODS

A retrospective review of medical records and polysomnograms was performed on CIMV dependent patients at Cincinnati Children's Hospital Medical Center from January 2011 to October 2017. Patients underwent overnight ventilator weaning or titration PSG. Subjects with less than 3 h of total sleep time were excluded.

RESULTS

About 163 PSGs were divided into 97 PSGs for ventilator titration and 66 PSGs for ventilator weaning. Of the 97 ventilator titration PSGs, 59 (60.8%) had inadequate ventilation, 10 (10.3%) had inadequate oxygenation, 22 (22.7%) had significant tracheostomy leak, 13 (13.4%) had autocycling, 3 (3.1%) had failure to trigger, 4 (4.1%) had central sleep apnea, and 24 (25.8%) had adequate ventilation on current ventilator settings. Of the 66 ventilator weaning PSGs, 48 (72.7%) weaned to lower ventilator settings or off ventilator support and 18 (27.3%) did not wean.

DISCUSSION

Our results indicate that PSG is useful in titration and weaning of ventilator settings in children with CIMV. Larger studies are needed to evaluate the subgroup of this population who would benefit most from PSG for assessment of adequate ventilator support.

An overview of noninvasive ventilation in cystic fibrosis

Noninvasive ventilation (NIV) use was initially reported in cystic fibrosis (CF) in 1991 as a bridge to lung transplantation, and over the decades, the use of NIV has increased in the CF population. Individuals with CF are prone to various physiologic changes as lung function worsens, and they benefit from NIV for advanced lung disease. As life expectancy in CF has been increasing due to advances such as highly effective modulator therapy, people with CF may also benefit from NIV for other diagnosis beyond advanced lung disease. NIV can improve gas exchange, quality of sleep, exercise tolerance, and augment airway clearance in CF. CF providers can readily become comfortable with this therapeutic modality. In this review, we will summarize the physiologic basis for NIV use in CF, describe indications for initiation, and discuss how to order and monitor patients on NIV. We will discuss aspects unique to people with CF and the use of NIV, as well as suggestions on how to reduce risks such as infection. We hope that this serves as a resource for CF providers, in particular those who do not have dedicated training in sleep medicine as we all continue to care for the CF patient population.