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Kalyoncu M, Namlı N, Yegit CY, Yanaz M, Gulieva A, Ergenekon AP, Selçuk M, Atağ E, İkizoğlu NB, Sabancı M, Lale K, Gokdemir Y, Ersu R, Karakoç F, Karadag B, Eralp EE. Is the Pediatric Sleep Questionnaire sensitive for sleep-disordered breathing in children with complex chronic disease? Sleep Breath 2024; 28:331-337. [PMID: 37733254 DOI: 10.1007/s11325-023-02915-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 08/21/2023] [Accepted: 09/04/2023] [Indexed: 09/22/2023]
Abstract
PURPOSE Sleep-disordered breathing (SDB) is a disease defined by breathing or breathing irregularities while asleep. The current study examines the association between results of polysomnography (PSG) and the Pediatric Sleep Questionnaire (PSQ), and the specificity and sensitivity of the PSQ for obstructive sleep apnea (OSA) in patients with chronic illnesses. METHODS Demographic and clinical attributes, in addition to PSQ and PSG outcomes were examined retrospectively among patients who underwent polysomnography (PSG) at our facility between 2012 and 2021. RESULTS Of 745 patients included in the study, 462 (62%) were male. The median age was 81 months (34-151 months). 117 of the patients (15/8%) had chronic lung disease, and 80 (10.7%) had cerebral palsy. The most common indications for PSG were symptoms of OSA (n = 426; 57.1%). According to obstructive apnea-hypopnea index (AHI), 361 patients (48.5%) had normal PSG. The median PSQ score was 0.40 (0.22-0.57). The sensitivity and specificity of the PSQ were 71.8% and 40.4%, respectively, for individuals aged 2 to 18 years. Among the disease subgroups, the cerebral palsy group had the highest sensitivity of PSQ (88.8%) for diagnosis of OSA. CONCLUSION Questionnaires for evaluating SDB are not sensitive or specific for identification of OSA in children with chronic conditions, and PSG remains the best method.
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Affiliation(s)
- Mine Kalyoncu
- Division of Pediatric Pulmonology, Marmara University Hospital, Fevzi Cakmak Mah. Mimar Sinan Cad. No:41 Pendik, Istanbul, Turkey.
| | - Nurtuğ Namlı
- Marmara University School of Medicine, Istanbul, Turkey
| | - Cansu Yilmaz Yegit
- Division of Pediatric Pulmonology, Başakşehir Çam and Sakura City Hospital, Istanbul, Turkey
| | - Muruvvet Yanaz
- Division of Pediatric Pulmonology, Marmara University Hospital, Fevzi Cakmak Mah. Mimar Sinan Cad. No:41 Pendik, Istanbul, Turkey
| | - Aynur Gulieva
- Division of Pediatric Pulmonology, Marmara University Hospital, Fevzi Cakmak Mah. Mimar Sinan Cad. No:41 Pendik, Istanbul, Turkey
| | - Almala Pınar Ergenekon
- Division of Pediatric Pulmonology, Marmara University Hospital, Fevzi Cakmak Mah. Mimar Sinan Cad. No:41 Pendik, Istanbul, Turkey
| | - Merve Selçuk
- Division of Pediatric Pulmonology, Marmara University Hospital, Fevzi Cakmak Mah. Mimar Sinan Cad. No:41 Pendik, Istanbul, Turkey
| | - Emine Atağ
- Division of Pediatric Pulmonology, Başkent University School of Medicine, Istanbul, Turkey
| | - Nilay Baş İkizoğlu
- Division of Pediatric Pulmonology, Istanbul University School of Medicine, Istanbul, Turkey
| | - Meltem Sabancı
- Sleep Laboratory of Pediatric Pulmonology, Marmara University School of Medicine, Istanbul, Turkey
| | - Kadir Lale
- Sleep Laboratory of Pediatric Pulmonology, Marmara University School of Medicine, Istanbul, Turkey
| | - Yasemin Gokdemir
- Division of Pediatric Pulmonology, Marmara University Hospital, Fevzi Cakmak Mah. Mimar Sinan Cad. No:41 Pendik, Istanbul, Turkey
| | - Refika Ersu
- Division of Respiratory Medicine, Children's Hospital of Eastern Ontario, Ottawa, ON, Canada
| | - Fazilet Karakoç
- Division of Pediatric Pulmonology, Marmara University Hospital, Fevzi Cakmak Mah. Mimar Sinan Cad. No:41 Pendik, Istanbul, Turkey
| | - Bulent Karadag
- Division of Pediatric Pulmonology, Marmara University Hospital, Fevzi Cakmak Mah. Mimar Sinan Cad. No:41 Pendik, Istanbul, Turkey
| | - Ela Erdem Eralp
- Division of Pediatric Pulmonology, Marmara University Hospital, Fevzi Cakmak Mah. Mimar Sinan Cad. No:41 Pendik, Istanbul, Turkey
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Chen C, Ioan I, Thieux M, Nicolino M, Franco P, Coutier L. Hypoventilation in patients with Prader-Willi syndrome across the pediatric age. Pediatr Pulmonol 2024. [PMID: 38179881 DOI: 10.1002/ppul.26852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Revised: 12/11/2023] [Accepted: 12/27/2023] [Indexed: 01/06/2024]
Abstract
OBJECTIVES Few data on alveolar hypoventilation in Prader-Willi syndrome (PWS) are available and the respiratory follow-up of these patients is not standardized. The objectives of this study were to evaluate the prevalence of alveolar hypoventilation in children with PWS and identify potential risk factors. STUDY DESIGN This retrospective study included children with PWS recorded by polysomnography (PSG) with transcutaneous carbon dioxide pressure (PtcCO2) or end-tidal CO2 (ETCO2) measurements, between 2007 and 2021, in a tertiary hospital center. The primary outcome was the presence of alveolar hypoventilation defined as partial pressure of carbon dioxide (pCO2) ≥ 50 mmHg during ≥2% of total sleep time (TST) or more than five consecutive minutes. RESULTS Among the 57 included children (38 boys, median age 4.8 years, range 0.1-15.6, 60% treated with growth hormone [GH], 37% obese), 19 (33%) had moderate-to-severe obstructive sleep apnea syndrome (defined as obstructive apnea-hypopnea index ≥5/h) and 20 (35%) had hypoventilation. The median (range) pCO2 max was 49 mmHg (38-69). Among the children with hypoventilation, 25% were asymptomatic. Median age and GH treatment were significantly higher in children with hypoventilation compared to those without. There was no significant difference in terms of sex, BMI, obstructive or central apnea-hypopnea index between both groups. CONCLUSION The frequency of alveolar hypoventilation in children and adolescents with PWS is of concern and may increase with age and GH treatment. A regular screening by oximetry-capnography appears to be indicated whatever the sex, BMI, and rate of obstructive or central apneas.
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Affiliation(s)
- Catherine Chen
- Service de pneumologie pédiatrique, Hôpital Femme Mère Enfant, Hospices, Civils de Lyon, Bron, France
- Université Claude-Bernard Lyon 1, Lyon, France
| | - Iulia Ioan
- Service d'explorations fonctionnelles pédiatriques, Hôpital d'Enfants, CHRU de Nancy; Unité DevAH, Université de Lorraine, Nancy, France
| | - Marine Thieux
- Université Claude-Bernard Lyon 1, Lyon, France
- Service Épilepsie-Sommeil-Explorations, Fonctionnelles Neurologiques Pédiatriques, Hôpital Femme Mère Enfant, Hospices Civils de, Lyon, Bron, France
- Unité INSERM U1028 CNRS UMR 5292, Université Lyon 1, Lyon, France
| | - Marc Nicolino
- Université Claude-Bernard Lyon 1, Lyon, France
- Service d'endocrinologie pédiatrique, Hôpital Femme Mère Enfant, Hospices Civils de Lyon, Bron, France
| | - Patricia Franco
- Université Claude-Bernard Lyon 1, Lyon, France
- Service Épilepsie-Sommeil-Explorations, Fonctionnelles Neurologiques Pédiatriques, Hôpital Femme Mère Enfant, Hospices Civils de, Lyon, Bron, France
- Unité INSERM U1028 CNRS UMR 5292, Université Lyon 1, Lyon, France
| | - Laurianne Coutier
- Service de pneumologie pédiatrique, Hôpital Femme Mère Enfant, Hospices, Civils de Lyon, Bron, France
- Université Claude-Bernard Lyon 1, Lyon, France
- Unité INSERM U1028 CNRS UMR 5292, Université Lyon 1, Lyon, France
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Tamir S, Dye TJ, Witt RM. Sleep and Circadian Disturbances in Children With Neurodevelopmental Disorders. Semin Pediatr Neurol 2023; 48:101090. [PMID: 38065637 DOI: 10.1016/j.spen.2023.101090] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Accepted: 09/28/2023] [Indexed: 12/18/2023]
Abstract
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.
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Affiliation(s)
- Sharon Tamir
- University of Cincinnati College of Medicine, Cincinnati, OH; Division of Human Genetics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH
| | - Thomas J Dye
- Division of Child Neurology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH; Division of Pulmonary Medicine and the Sleep Center, Cincinnati Children's Hospital Medical Center, Cincinnati, OH; Center for Circadian Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, OH; Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH
| | - Rochelle M Witt
- Division of Child Neurology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH; Division of Pulmonary Medicine and the Sleep Center, Cincinnati Children's Hospital Medical Center, Cincinnati, OH; Center for Circadian Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, OH; Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH.
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Abstract
Control of breathing in children varies with age and sleep state. There is overlap between central hypoventilation, autonomic dysfunction, and hypothalamic dysfunction in the rare disorders (congenital central hypoventilation syndrome and rapid-onset obesity, hypoventilation, hypothalamic dysfunction, and autonomic dysregulation). Other, more common disorders that typically present in childhood also include central hypoventilation and disordered ventilatory responses.
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Affiliation(s)
- Julie M Baughn
- Division of Pulmonary and Critical Care, Mayo Clinic Center for Sleep Medicine, Mayo Clinic, 200 First Street Southwest, Rochester, MN 55905, USA.
| | - Christine A Matarese
- Division of Pulmonary and Critical Care, Mayo Clinic Center for Sleep Medicine, Mayo Clinic, 200 First Street Southwest, Rochester, MN 55905, USA
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Abstract
PURPOSE OF REVIEW This paper reviews how sleep is impacted in patients with Prader-Willi syndrome (PWS), focusing on sleep-related breathing disturbances and excessive daytime sleepiness (EDS). RECENT FINDINGS Hypothalamic dysfunction may underlie several aspects of the PWS phenotype. Central sleep apnea (CSA) can persist beyond infancy. Nocturnal hypoventilation is common and may occur without central or obstructive sleep apnea (OSA). Adenotonsillectomy, a mainstay of OSA treatment, may cause velopharyngeal insufficiency. Growth hormone (GH) is considered safe, but close surveillance for OSA remains important. Cardiac autonomic dysfunction occurs during slow wave sleep and may increase the risk of cardiovascular events. EDS and narcolepsy are also common. Modafinil and pitolisant are treatment options currently being studied. Sleep disorders are prevalent in individuals with PWS. Sleep-related breathing disorders present as CSA in infancy and later in life as OSA and hypoventilation. GH therapy has improved the clinical outcomes of patients with PWS, but close surveillance and treatment for OSA is recommended. EDS can persist even after sleep-related breathing disorders are treated, and some individuals may even develop narcolepsy. Early recognition and treatment of sleep-related disorders may prevent morbidity and result in improved survival of patients with PWS.
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Osawa M, Ikeda H, Ueda A, Naito H, Nagao R, Kakimoto Y. Gastric aspiration in sudden unexpected infant death of Prader-Willi syndrome: immunohistochemical detection of feeding components. Int J Legal Med 2022; 136:1883-1888. [PMID: 36018383 PMCID: PMC9576639 DOI: 10.1007/s00414-022-02883-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Accepted: 08/17/2022] [Indexed: 11/24/2022]
Abstract
Prader–Willi syndrome (PWS) in infants is characterized by hypotonia and poor sucking with feeding difficulties. Two autopsy cases of sudden unexpected death during sleep after tube feeding are described herein. For one, gastric aspiration caused by the possible milk regurgitation was suspected. Immunohistochemical examination of lung sections was performed using three antibodies to human α-lactalbumin, human gross cystic disease fluid protein 15, and cow whey β-lactoglobulin. Five cases of sudden unexpected infant death occurring earlier than at 6 months old were selected as controls. Marked immune-staining for infant formula in one PWS subject was evident within terminal bronchioles and alveoli with granular and amorphous features. However, no positive staining was apparent in the other subject, who exhibited contrasting features in milk distribution. Among control cases, one showed mild staining in the bronchiole, but the others did not. The antibody to β-lactoglobulin reacted specifically with formula, with no nonspecific background. Gastric contents in the airway can be a difficult issue because of the consequent terminal gasping. However, because of an episode of antemortem symptoms of potential regurgitation, and from findings at autopsy such as petechiae, we inferred that fatal regurgitation occurred in this PWS infant after tube feeding. Several clinical reports have described milk aspiration, but this pathological report is the first related to aspiration in PWS during tube feeding.
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Affiliation(s)
- Motoki Osawa
- Department of Forensic Medicine, Tokai University School of Medicine, Isehara, Kanagawa, Japan.
| | - Haruka Ikeda
- Department of Forensic Medicine, Tokai University School of Medicine, Isehara, Kanagawa, Japan
| | - Atsushi Ueda
- Department of Forensic Medicine, Tokai University School of Medicine, Isehara, Kanagawa, Japan
| | - Haruaki Naito
- Department of Forensic Medicine, Tokai University School of Medicine, Isehara, Kanagawa, Japan
| | - Ryoko Nagao
- Department of Forensic Medicine, Tokai University School of Medicine, Isehara, Kanagawa, Japan
| | - Yu Kakimoto
- Department of Forensic Medicine, Tokai University School of Medicine, Isehara, Kanagawa, Japan
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Wong SB, Yang MC, Tzeng IS, Tsai WH, Lan CC, Tsai LP. Progression of Obstructive Sleep Apnea Syndrome in Pediatric Patients with Prader-Willi Syndrome. CHILDREN (BASEL, SWITZERLAND) 2022; 9:912. [PMID: 35740849 PMCID: PMC9221549 DOI: 10.3390/children9060912] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 06/14/2022] [Accepted: 06/15/2022] [Indexed: 11/16/2022]
Abstract
Obstructive sleep apnea syndrome (OSAS) is one of the most common comorbidities in patients with Prader-Willi syndrome (PWS) and causes significant consequences. This observational study was conducted to investigate the progression of OSAS in pediatric patients with PWS, who had not undergone upper airway surgery, through a longitudinal follow-up of their annual polysomnography results. Annual body mass index (BMI), BMI z-score, sleep efficiency and stages, central apnea index (CAI), obstructive apnea-hypopnea index (OAHI), and oxygen saturation nadir values were longitudinally analyzed. At enrollment, of 22 patients (10 boys and 12 girls) aged 11.7 ± 3.9 years, 20 had OSAS. During the 4-year follow-up, only two patients had a spontaneous resolution of OSAS. The average BMI and BMI z-score increased gradually, but CAI and OAHI showed no significant differences. After statistical adjustment for sex, age, genotype, growth hormone use, and BMI z-score, OAHI was associated with the BMI z-score and deletion genotype. In conclusion, OSAS is common in patients with PWS, and rarely resolved spontaneously. Watchful waiting may not be the best OSAS management strategy. Weight maintenance and careful selection of surgical candidates are important for OSAS treatment in patients with PWS.
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Affiliation(s)
- Shi-Bing Wong
- Department of Pediatrics, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City 23142, Taiwan; (S.-B.W.); (W.-H.T.)
- School of Medicine, Tzu Chi University, Hualien 97004, Taiwan; (M.-C.Y.); (C.-C.L.)
| | - Mei-Chen Yang
- School of Medicine, Tzu Chi University, Hualien 97004, Taiwan; (M.-C.Y.); (C.-C.L.)
- Division of Pulmonary Medicine, Department of Internal Medicine, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City 23142, Taiwan
| | - I-Shiang Tzeng
- Department of Research, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City 23142, Taiwan;
| | - Wen-Hsin Tsai
- Department of Pediatrics, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City 23142, Taiwan; (S.-B.W.); (W.-H.T.)
- School of Medicine, Tzu Chi University, Hualien 97004, Taiwan; (M.-C.Y.); (C.-C.L.)
| | - Chou-Chin Lan
- School of Medicine, Tzu Chi University, Hualien 97004, Taiwan; (M.-C.Y.); (C.-C.L.)
- Division of Pulmonary Medicine, Department of Internal Medicine, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City 23142, Taiwan
| | - Li-Ping Tsai
- Department of Pediatrics, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City 23142, Taiwan; (S.-B.W.); (W.-H.T.)
- School of Medicine, Tzu Chi University, Hualien 97004, Taiwan; (M.-C.Y.); (C.-C.L.)
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Duis J, Pullen LC, Picone M, Friedman N, Hawkins S, Sannar E, Pfalzer AC, Shelton AR, Singh D, Zee PC, Glaze DG, Revana A. Diagnosis and management of sleep disorders in Prader-Willi syndrome. J Clin Sleep Med 2022; 18:1687-1696. [PMID: 35172921 PMCID: PMC9163612 DOI: 10.5664/jcsm.9938] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
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.
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Affiliation(s)
- Jessica Duis
- Section of Genetics and Inherited Metabolic Diseases, Section of Pediatrics Special Care Clinic, Prader-Willi Syndrome Multidisciplinary Clinic, Children’s Hospital Colorado, University of Colorado Anschutz Medical Campus, Aurora, Colorado,Address correspondence to: Jessica Duis, MD, MS, Assistant Professor of Pediatrics and Genetics, Section of Genetics and Inherited Metabolic Diseases, Section of Pediatrics Special Care Clinic, Director, Prader-Willi Syndrome Multidisciplinary Clinic, Children’s Hospital Colorado, University of Colorado Anschutz Medical Campus, 13123 E 16th Ave, Aurora, CO 80045; Tel: (303) 724-2370;
| | | | | | - Norman Friedman
- Children’s Hospital Colorado, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | - Stephen Hawkins
- Breathing Institute, Children’s Hospital Colorado, Aurora, Colorado
| | - Elise Sannar
- Children’s Hospital Colorado, University of Colorado Anschutz Medical Campus, Aurora, Colorado
| | | | | | - Deepan Singh
- Department of Psychiatry, Maimonides Medical Center, Brooklyn, New York
| | - Phyllis C. Zee
- Department of Neurology, Center for Circadian and Sleep Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - Daniel G. Glaze
- The Children’s Sleep Center, Baylor College of Medicine, Texas Children’s Hospital, Houston, Texas
| | - Amee Revana
- Baylor College of Medicine, Texas Children’s Hospital, Houston, Texas
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Ingram DG, Arganbright JM, Paprocki E, Halpin KL. Sleep Disorders in Children with Prader Willi Syndrome: Current Perspectives. Nat Sci Sleep 2022; 14:2065-2074. [PMID: 36394064 PMCID: PMC9662031 DOI: 10.2147/nss.s361518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Accepted: 11/08/2022] [Indexed: 11/11/2022] Open
Abstract
Children with Prader-Willi syndrome (PWS) face a multitude of potential health challenges including life-threatening obesity, endocrinopathies, behavioral and emotional dysregulation, developmental delays, and sleep disorders. In the current perspective piece, we provide a focused review of the condition's etiology and clinical findings, as well as a more in-depth discussion of sleep disorders frequently associated with PWS. In particular, we highlight and discuss difficult clinical scenarios frequently encountered by the pediatric sleep physician caring for this patient population, including diagnosis and treatment of complex sleep-related breathing disorders, considerations for sleep apnea surgery, the interplay between growth hormone and sleep apnea, diagnostic challenges in hypersomnia/narcolepsy, and current and emerging therapies for hypersomnia/narcolepsy. Overall, although there are many areas that need further research, sleep disorders remain a fruitful target for improving quality of life of children with PWS and their families.
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Affiliation(s)
- David G Ingram
- Division of Pulmonary and Sleep Medicine, Children's Mercy Hospital, Kansas City, MO, USA
| | - Jill M Arganbright
- Division of Pediatric Otolaryngology, Children's Mercy Hospital, Kansas City, MO, USA
| | - Emily Paprocki
- Division of Pediatric Endocrinology, Children's Mercy Hospital, Kansas City, MO, USA
| | - Kelsee L Halpin
- Division of Pediatric Endocrinology, Children's Mercy Hospital, Kansas City, MO, USA
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Schaefer J, Davey MJ, Nixon GM. Sleep-disordered breathing in school-aged children with Prader-Willi Syndrome. J Clin Sleep Med 2021; 18:1055-1061. [PMID: 34870583 DOI: 10.5664/jcsm.9788] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
STUDY OBJECTIVES Studies of sleep-disordered breathing (SDB) in children with Prader-Willi syndrome (PWS) have focused on early childhood and growth hormone (GH)-naïve children, but little is known about older children, including those on long term GH therapy. This study aimed to describe the nature and prevalence of SDB in school-aged children with PWS in the growth hormone era. METHODS This retrospective single-center chart review included children aged 6-18 years with PWS who had overnight polysomnography not involving respiratory support over five years (2012-2017). The main outcome measures were the presence of obstructive sleep apnea, central sleep apnea or hypoventilation defined by an elevated PCO2 as per standard pediatric criteria. RESULTS Seventeen children (8 male, median age 11.6y, range 6.6-16.1y) were included. Fifteen demonstrated SDB of different types: central sleep apnea (18%), obstructive sleep apnea (24%), both obstructive and central sleep apnea (29%), or hypoventilation without obstructive or central sleep apnea (18%). Twelve (71%) children had evidence of hypoventilation. Those with hypoventilation had a higher central apnea-hypopnea index (AHI) but no difference in the obstructive AHI, age, sex, growth parameters, or the presence of scoliosis or sleep-related symptoms compared to those without hypoventilation. CONCLUSIONS Sleep-related hypoventilation is common in school-aged children with PWS. The presence of central sleep apnea, including the quantification of central hypopneas, but not obstructive sleep apnea or clinical factors predicted the presence of hypoventilation. Long-term polysomnography surveillance in children with PWS should include identification of central hypopneas and measurement of continuous pCO2.
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Affiliation(s)
- Jennifer Schaefer
- Melbourne Children's Sleep Centre, Monash Children's Hospital, Monash Health, Melbourne, Australia
| | - Margot J Davey
- Melbourne Children's Sleep Centre, Monash Children's Hospital, Monash Health, Melbourne, Australia.,Department of Paediatrics, Monash University, Melbourne, Australia
| | - Gillian M Nixon
- Melbourne Children's Sleep Centre, Monash Children's Hospital, Monash Health, Melbourne, Australia.,Department of Paediatrics, Monash University, Melbourne, Australia
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Ratanakorn W, Brockbank J, Ishman S, Tadesse DG, Hossain MM, Simakajornboon N. The maturation changes of sleep-related respiratory abnormalities in infants with laryngomalacia. J Clin Sleep Med 2021; 17:767-777. [PMID: 33295276 DOI: 10.5664/jcsm.9046] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
STUDY OBJECTIVES Obstructive sleep apnea (OSA) and central sleep apnea (CSA) are common in infants with laryngomalacia. The purpose of this study was to evaluate developmental changes in sleep-related breathing disorders over time in infants with laryngomalacia and understand the effect of supraglottoplasty (SGP) and nonsurgical treatment. METHODS This is a retrospective review of infants with laryngomalacia who had at least 2 diagnostic polysomnography studies performed from January 2000 and May 2015. We included infants who had either OSA or CSA. Comparison of sleep and respiratory parameters by age group (0-6, 6-12, and >12 months old) was performed in both SGP and non-SGP groups using a mixed-effect regression model. A log-normal mixed model was used to explore the changes in sleep and respiratory parameters with age. The time to resolution of CSA and OSA was analyzed using nonparametric survival analysis. RESULTS A total of 102 infants were included; 57 had only OSA and 45 had both CSA and OSA. There were significant decreases in apnea-hypopnea index, obstructive index, central apnea index, and arousal index with increasing age in both SGP and non-SGP groups. The mean age at resolution of CSA (central apnea index < 5) was 7.60 months old for SGP and 12.57 months old for non-SGP (P < .05). There were no significant differences in the mean age at resolution of OSA (obstructive index < 1; 35.18 [SGP] vs 41.55 months [non-SGP]; P = .60) between SGP and non-SGP groups. Infants with neurologic disease, congenital anomalies, or genetic syndromes required significantly more time to resolve OSA (28.12 [normal] vs 53.13 [neurological] vs 59.53 months [congenital anomalies and genetic]; P < .01). CONCLUSIONS Both OSA and CSA improve in infants with laryngomalacia with increasing age regardless of SGP. The mechanism underlying these changes may involve airway growth and maturation of respiratory control. Time to resolution of OSA is affected by the presence of neurologic diseases, congenital anomalies, and genetic syndromes. Further studies are needed to confirm these findings and to evaluate long-term outcomes in this population.
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Affiliation(s)
- Woranart Ratanakorn
- Sleep Center, Division of Pulmonary Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio.,Department of Pediatrics, Chonburi Hospital, Chonburi, Thailand
| | - Justin Brockbank
- Department of Pediatrics, Virginia Commonwealth University, Richmond, Virginia
| | - Stacey Ishman
- Sleep Center, Division of Pulmonary Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio.,Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio.,Division of Otolaryngology-Head and Neck Surgery, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio.,Department of Otolaryngology-Head and Neck Surgery, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Dawit G Tadesse
- Division of Biostatistics and Epidemiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Md Monir Hossain
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio.,Division of Biostatistics and Epidemiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Narong Simakajornboon
- Sleep Center, Division of Pulmonary Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio.,Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio
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Ghirardo S, Amaddeo A, Griffon L, Khirani S, Fauroux B. Central apnea and periodic breathing in children with underlying conditions. J Sleep Res 2021; 30:e13388. [PMID: 34075643 PMCID: PMC9286345 DOI: 10.1111/jsr.13388] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Revised: 04/17/2021] [Accepted: 04/22/2021] [Indexed: 12/21/2022]
Abstract
Central sleep apneas and periodic breathing are poorly described in childhood. The aim of the study was to describe the prevalence and characteristics of central sleep apnea and periodic breathing in children with associated medical conditions, and the therapeutic management. We retrospectively reviewed all poly(somno)graphies with a central apnea index ≥ 5 events per hr in children aged > 1 month performed in a paediatric sleep laboratory over a 6‐year period. Clinical data and follow‐up poly(somno)graphies were gathered. Ninety‐five out of 2,981 patients (3%) presented central sleep apnea: 40% were < 1 year, 41% aged 1–6 years, and 19% aged ≥ 6 years. Chiari malformation was the most common diagnosis (13%). Mean central apnea index was 20 ± 30 events per hr (range 5–177). Fifty‐eight (61%) children had an exclusive central pattern with < 5 obstructive events per hr. Periodic breathing was present in 79 (83%) patients, with a mean percentage of time with periodic breathing of 9 ± 16%. Among periodic breathing episodes, 40% appeared after a sigh, 8% after an obstructive event, 6% after breathing instability and 2% after bradypnea. The highest clinical apnea index and percentage of time with periodic breathing were observed in children with encephalopathy and/or epilepsy (68 ± 63 events per hr and 30 ± 34%). Clinical apnea index did not differ according to age, while periodic breathing duration was longer in children > 1 year old. Watchful waiting was performed in 22 (23%) patients with spontaneous improvement in 20. Other treatments (upper airway or neurosurgery, nocturnal oxygen therapy, continuous positive airway pressure, non‐invasive ventilation) were effective in selected patients. Central sleep apnea is rare in children and comprises heterogeneous conditions. Sleep studies are essential for the diagnosis, characterization and management of central sleep apnea.
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Affiliation(s)
- Sergio Ghirardo
- Assistance Publique-Hôpitaux de Paris (AP-HP), Pediatric Noninvasive Ventilation and Sleep Unit, Hôpital Necker-Enfants Malades, Paris, France.,University of Trieste Department of Medicine, Surgery and Health Sciences, Trieste, Italy
| | - Alessandro Amaddeo
- Assistance Publique-Hôpitaux de Paris (AP-HP), Pediatric Noninvasive Ventilation and Sleep Unit, Hôpital Necker-Enfants Malades, Paris, France.,Equipe d'Accueil EA VIFASOM, Université de Paris, Paris, France
| | - Lucie Griffon
- Assistance Publique-Hôpitaux de Paris (AP-HP), Pediatric Noninvasive Ventilation and Sleep Unit, Hôpital Necker-Enfants Malades, Paris, France.,Equipe d'Accueil EA VIFASOM, Université de Paris, Paris, France
| | - Sonia Khirani
- Assistance Publique-Hôpitaux de Paris (AP-HP), Pediatric Noninvasive Ventilation and Sleep Unit, Hôpital Necker-Enfants Malades, Paris, France.,Equipe d'Accueil EA VIFASOM, Université de Paris, Paris, France.,ASV Santé, Gennevilliers, France
| | - Brigitte Fauroux
- Assistance Publique-Hôpitaux de Paris (AP-HP), Pediatric Noninvasive Ventilation and Sleep Unit, Hôpital Necker-Enfants Malades, Paris, France.,Equipe d'Accueil EA VIFASOM, Université de Paris, Paris, France
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14
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Cataldi M, Arnaldi D, Tucci V, De Carli F, Patti G, Napoli F, Pace M, Maghnie M, Nobili L. Sleep disorders in Prader-Willi syndrome, evidence from animal models and humans. Sleep Med Rev 2021; 57:101432. [PMID: 33567377 DOI: 10.1016/j.smrv.2021.101432] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 08/31/2020] [Accepted: 09/01/2020] [Indexed: 02/06/2023]
Abstract
Prader-Willi Syndrome (PWS) is a complex genetic disorder with multiple cognitive, behavioral and endocrine dysfunctions. Sleep alterations and sleep disorders such as Sleep-disordered breathing and Central disorders of hypersomnolence are frequently recognized (either isolated or in comorbidity). The aim of the review is to highlight the pathophysiology and the clinical features of sleep disorders in PWS, providing the basis for early diagnosis and management. We reviewed the genetic features of the syndrome and the possible relationship with sleep alterations in animal models, and we described sleep phenotypes, diagnostic tools and therapeutic approaches in humans. Moreover, we performed a meta-analysis of cerebrospinal fluid orexin levels in patients with PWS; significantly lower levels of orexin were detected in PWS with respect to control subjects (although significantly higher than the ones of narcoleptic patients). Sleep disorders in humans with PWS are multifaceted and are often the result of different mechanisms. Since hypothalamic dysfunction seems to partially influence metabolic, respiratory and sleep/wake characteristics of this syndrome, additional studies are required in this framework.
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Affiliation(s)
- Matteo Cataldi
- Unit of Child Neuropsychiatry, Department of Medical and Surgical Neuroscience and Rehabilitation, IRCCS Istituto Giannina Gaslini, Genoa, Italy
| | - Dario Arnaldi
- IRCCS Ospedale Policlinico San Martino, Genoa, Italy; Department of Neurosciences, Rehabilitation, Ophthalmology, Genetics and Maternal and Child Health (DINOGMI), University of Genoa, Genoa, Italy
| | - Valter Tucci
- Genetics and Epigenetics of Behaviour Laboratory, Istituto Italiano di Tecnologia, Genoa, Italy
| | - Fabrizio De Carli
- Institute of Bioimaging and Molecular Physiology, National Research Council, Genoa, Italy
| | - Giuseppa Patti
- Department of Neurosciences, Rehabilitation, Ophthalmology, Genetics and Maternal and Child Health (DINOGMI), University of Genoa, Genoa, Italy; Department of Pediatrics, Istituto Giannina Gaslini, University of Genoa, Genoa, Italy
| | - Flavia Napoli
- Department of Pediatrics, Istituto Giannina Gaslini, University of Genoa, Genoa, Italy
| | - Marta Pace
- Genetics and Epigenetics of Behaviour Laboratory, Istituto Italiano di Tecnologia, Genoa, Italy
| | - Mohamad Maghnie
- Department of Neurosciences, Rehabilitation, Ophthalmology, Genetics and Maternal and Child Health (DINOGMI), University of Genoa, Genoa, Italy; Department of Pediatrics, Istituto Giannina Gaslini, University of Genoa, Genoa, Italy
| | - Lino Nobili
- Unit of Child Neuropsychiatry, Department of Medical and Surgical Neuroscience and Rehabilitation, IRCCS Istituto Giannina Gaslini, Genoa, Italy; Department of Neurosciences, Rehabilitation, Ophthalmology, Genetics and Maternal and Child Health (DINOGMI), University of Genoa, Genoa, Italy.
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15
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Lu A, Luo F, Sun C, Zhang X, Wang L, Lu W. Sleep-disordered breathing and genetic findings in children with Prader-Willi syndrome in China. ANNALS OF TRANSLATIONAL MEDICINE 2020; 8:989. [PMID: 32953789 PMCID: PMC7475489 DOI: 10.21037/atm-20-4475] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Background Sleep-related breathing disorders are common in individuals with Prader-Willi syndrome (PWS), and can include hypersomnolence and obstructive sleep apnea, as well as central sleep breathing abnormalities that are present from infancy. Here we describe the sleep-disordered breathing (SDB) and genetic findings in patients with PWS in China. Methods In all, 48 patients confirmed by genetic tests were enrolled, 32 were under 2 years of age and 16 were older children. There were 37 (77.1%) patients with paternal 15q11-13 deletions, 11 (22.9%) patients with maternal uniparental disomy (mUPD), and no patients with imprinting defect (ID). Results Compared with infants, a significantly higher proportion of older children with PWS were overweight or obese (15/16 children vs. 4/32 infants) and children had a higher serum level of free thyroxine (FT4) (0.9±0.2 vs. 0.7±0.7) and thyroxine (T4) (9.0±2.5 vs. 7.5±1.7). Age was correlated significantly with body mass index (BMI), T4, and FT4 (r=0.626, P=0.000; r=0.426, respectively). Overall, 42 of 48 (87.5%) patients had sleep apnea on polysomnography (PSG). Infants, when compared with older children, were more likely to experience central sleep apnea (71.8% vs. 25%). In infants, there were no significant differences in the prevalence of SDB between the deletion group and the mUPD group. Conclusions Being overweight or obese was more common in older children with PWS. Compared with infants, a higher proportion children were overweight or obese and had higher serum levels of FT4 and T4. The prevalence of SDB was high in those with PWS, and central sleep apnea was found to be prevalent in infants. The pattern of SDB in infants with PWS was not significantly associated with the genotypes.
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Affiliation(s)
- Aizhen Lu
- Department of Respiratory, Children's Hospital of Fudan University, Shanghai, China
| | - Feihong Luo
- Department of Endocrinology and Inherited Metabolic Diseases, Children's Hospital of Fudan University, Shanghai, China
| | - Chengjun Sun
- Department of Endocrinology and Inherited Metabolic Diseases, Children's Hospital of Fudan University, Shanghai, China
| | - Xiaobo Zhang
- Department of Respiratory, Children's Hospital of Fudan University, Shanghai, China
| | - Libo Wang
- Department of Respiratory, Children's Hospital of Fudan University, Shanghai, China
| | - Wei Lu
- Department of Endocrinology and Inherited Metabolic Diseases, Children's Hospital of Fudan University, Shanghai, China
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16
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Pacoricona Alfaro DL, Lemoine P, Ehlinger V, Molinas C, Diene G, Valette M, Pinto G, Coupaye M, Poitou-Bernert C, Thuilleaux D, Arnaud C, Tauber M. Causes of death in Prader-Willi syndrome: lessons from 11 years' experience of a national reference center. Orphanet J Rare Dis 2019; 14:238. [PMID: 31684997 PMCID: PMC6829836 DOI: 10.1186/s13023-019-1214-2] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Accepted: 09/24/2019] [Indexed: 12/12/2022] Open
Abstract
Background In the last 20 years, substantial improvements have been made in the diagnosis, treatment and management of patients with Prader-Willi syndrome (PWS). Few data on causes of death are available since those improvements were made. Our study assessed the causes of death among French patients with PWS over the first 11 years of experience of the nationwide French Reference Center for PWS (FRC-PWS). Methods Our study relied on two sources of mortality information at national level between 2004 and 2014: The French Epidemiological Centre for the Medical Causes of Death (CépiDc) Registry and the FRC-PWS database. Causes of death were classified into seven categories: respiratory, cardiovascular, gastrointestinal, severe infection, sudden death, other causes, and unknown. Descriptive statistics were calculated separately for children (< 18 years-old) and adults (≥18 years-old). Results One hundred and four deaths were identified in France from 2004 to 2014. The median age at death was 30 years, ranging from less than 1 month to 58 years. Seventeen deaths occurred in patients under 18 years, with 70% of them in children under 2 years. Respiratory causes accounted for more than 50% of the deaths in patients with PWS in both children and adults. Both cause and age of death did not significantly differ according to gender or genetic subtype. Conclusions Patients with PWS die prematurely due to a respiratory cause in most cases at all ages. In those adult patients with data on obesity, 98% were reported to be obese.
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Affiliation(s)
| | - Perrine Lemoine
- Endocrinology, Obesity, Bone Diseases, Genetics and Gynecology Unit, Children's Hospital, University Hospital Center of Toulouse, Toulouse, France
| | | | - Catherine Molinas
- Endocrinology, Obesity, Bone Diseases, Genetics and Gynecology Unit, Children's Hospital, University Hospital Center of Toulouse, Toulouse, France.,French National Reference Center for Prader-Willi Syndrome, Children's Hospital, University Hospital Center of Toulouse, 330, avenue de Grande-Bretagne - TSA 40031, 31059, Toulouse cedex 9, France.,Centre de Physiopathologie de Toulouse-Purpan, UMR 5282 CNRS, UMR 1043 Inserm, Paul Sabatier University, Toulouse, France
| | - Gwénaëlle Diene
- UMR 1027 Inserm- Paul Sabatier University, Toulouse, France.,Endocrinology, Obesity, Bone Diseases, Genetics and Gynecology Unit, Children's Hospital, University Hospital Center of Toulouse, Toulouse, France.,French National Reference Center for Prader-Willi Syndrome, Children's Hospital, University Hospital Center of Toulouse, 330, avenue de Grande-Bretagne - TSA 40031, 31059, Toulouse cedex 9, France
| | - Marion Valette
- Endocrinology, Obesity, Bone Diseases, Genetics and Gynecology Unit, Children's Hospital, University Hospital Center of Toulouse, Toulouse, France.,French National Reference Center for Prader-Willi Syndrome, Children's Hospital, University Hospital Center of Toulouse, 330, avenue de Grande-Bretagne - TSA 40031, 31059, Toulouse cedex 9, France
| | - Graziella Pinto
- Pediatric Endocrinology, Diabetology and Gynecology Department, Assistance-Publique Hôpitaux de Paris (AP-HP), Necker Children's University Hospital, Paris, France
| | - Muriel Coupaye
- French National Reference Center for Prader-Willi Syndrome, Nutrition Department, Assistance-Publique Hôpitaux de Paris (AP-HP), Pitié-Salpêtrière Hospital, Paris, France
| | - Christine Poitou-Bernert
- French National Reference Center for Prader-Willi Syndrome, Nutrition Department, Assistance-Publique Hôpitaux de Paris (AP-HP), Pitié-Salpêtrière Hospital, Paris, France.,Nutriomics team, Sorbonne University, UPMC University Paris 06, Inserm, Paris, France
| | - Denise Thuilleaux
- French National Reference Center for Prader-Willi Syndrome, Prader-Willi Unit, Assistance Publique Hôpitaux de Paris (AP-HP), Marine Hendaye Hospital, Hendaye, France
| | - Catherine Arnaud
- UMR 1027 Inserm- Paul Sabatier University, Toulouse, France.,Unité de Soutien Méthodologique à la Recherche, University Hospital Center of Toulouse, Toulouse, France
| | - Maithé Tauber
- Endocrinology, Obesity, Bone Diseases, Genetics and Gynecology Unit, Children's Hospital, University Hospital Center of Toulouse, Toulouse, France. .,French National Reference Center for Prader-Willi Syndrome, Children's Hospital, University Hospital Center of Toulouse, 330, avenue de Grande-Bretagne - TSA 40031, 31059, Toulouse cedex 9, France. .,Centre de Physiopathologie de Toulouse-Purpan, UMR 5282 CNRS, UMR 1043 Inserm, Paul Sabatier University, Toulouse, France.
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Del-Río Camacho G, Medina Castillo L, Rodríguez-Catalán J, Soto Insuga V, Gómez García T. Central sleep apnea in children with obstructive sleep apnea syndrome and improvement following adenotonsillectomy. Pediatr Pulmonol 2019; 54:1670-1675. [PMID: 31373175 DOI: 10.1002/ppul.24469] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/24/2019] [Accepted: 07/09/2019] [Indexed: 01/08/2023]
Abstract
BACKGROUND Although the pathogenesis of central and obstructive events seems to be different, these two entities may somehow be related. We aimed to determine whether, as reported in previous research, the number of central sleep apnea (CSA) cases in a population of children with obstructive sleep apnea syndrome (OSAS) was greater than in patients without obstructive events, and if CSA worsens with increasing OSAS severity. As a second objective, we analyzed changes in central apnea index (CAI) after adenotonsillar surgery compared to changes when no surgery has been performed. METHODS We retrospectively reviewed nocturnal polysomnography (PSG) data from children between 1 and 14 years of age with no neurological conditions or syndromes. Patients with CAI values greater than 5 per hour were diagnosed as having CSA. Improvements of greater than 50% in CAI on repeat PSG were considered to represent a real change. RESULTS Data were available from 1279 PSG studies, resulting in 72 children with a CAI greater than 5 per hour (5.6%). Patients with OSAS showed a higher CAI (2.16) compared with those without OSAS (1.17), and this correlation increased with higher degrees of obstructive apnea severity. When adenotonsillectomy was performed due to OSAS, the CAI decreased by 1.37. The average decrease in PSG values was only 0.38 in cases where no surgery was performed. CONCLUSION The results of this study suggest that although CSA is perceived to be mostly associated with central nervous system ventilatory control, there may be a connection with airway obstruction and in children with CSA and OSA diagnosis adenotonsillectomy may improve both conditions.
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Affiliation(s)
- Genoveva Del-Río Camacho
- Pediatrics Department, Fundación Jiménez Díaz, Madrid, Spain.,Multidisciplinary Sleep Unit, Department of Respiratory Medicine, Fundación Jiménez Díaz, Madrid, Spain
| | | | | | - Victor Soto Insuga
- Pediatrics Department, Fundación Jiménez Díaz, Madrid, Spain.,Multidisciplinary Sleep Unit, Department of Respiratory Medicine, Fundación Jiménez Díaz, Madrid, Spain
| | - Teresa Gómez García
- Multidisciplinary Sleep Unit, Department of Respiratory Medicine, Fundación Jiménez Díaz, Madrid, Spain.,Department of Respiratory Medicine, Fundación Jiménez Díaz, Madrid, Spain
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18
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Diagnosis, management and pathophysiology of central sleep apnea in children. Paediatr Respir Rev 2019; 30:49-57. [PMID: 30170958 DOI: 10.1016/j.prrv.2018.07.005] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Accepted: 07/17/2018] [Indexed: 11/21/2022]
Abstract
Central sleep apnea (CSA) is thought to occur in about 1-5% of healthy children. CSA occurs more commonly in children with underlying disease and the presence of CSA may influence the course of their disease. CSA can be classified based on the presence or absence of hypercapnia as well as the underlying condition it is associated with. The management of CSA needs to be tailored to the patient and may include medication, non-invasive ventilation, and surgical intervention. Screening children at high risk will allow for earlier diagnosis and timely therapeutic interventions for this population. The review will highlight the pathophysiology, prevalence and diagnosis of CSA in children. An algorithm for the management of CSA in healthy children and children with underlying co-morbidities will be outlined.
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Abel F, Tan HL, Negro V, Bridges N, Carlisle T, Chan E, Laverty A, Miligkos M, Samuels M, Kaditis AG. Hypoventilation disproportionate to OSAS severity in children with Prader-Willi syndrome. Arch Dis Child 2019; 104:166-171. [PMID: 30007944 DOI: 10.1136/archdischild-2017-314282] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Revised: 06/16/2018] [Accepted: 06/20/2018] [Indexed: 01/27/2023]
Abstract
OBJECTIVE To test the hypothesis that children with Prader-Willi syndrome (PWS) and obstructive sleep apnoea syndrome (OSAS) have hypercapnia for higher proportion of total sleep time (TST) than non-syndromic children with similar obstructive apnoea-hypopnoea index (OAHI). DESIGN Cross-sectional study. SETTING Two tertiary care hospitals. PATIENTS Patients with PWS and non-syndromic children with snoring who underwent polygraphy and were of similar age, body mass index (BMI) z-score and OAHI. MAIN OUTCOME MEASURE The two groups were compared regarding %TST with transcutaneous CO2 (PtcCO2) >50 mm Hg. The interaction between PWS diagnosis and OSAS severity (OAHI <1 episode/h vs 1-5 episodes/h vs >5 episodes/h) regarding %TST with PtcCO2 >50 mm Hg was tested using multiple linear regression. RESULTS 48 children with PWS and 92 controls were included (median age 2.3 (range 0.2-14.1) years vs 2.2 (0.3-15.1) years; BMI z-score 0.7±1.9 vs 0.8±1.7; median OAHI 0.5 (0-29.5) episodes/h vs 0.5 (0-33.9) episodes/h; p>0.05). The two groups did not differ in %TST with PtcCO2 >50 mm Hg (median 0% (0-100%) vs 0% (0-81.3%), respectively; p>0.05). However, the interaction between PWS and OSAS severity with respect to duration of hypoventilation was significant (p<0.01); the estimated mean differences of %TST with PtcCO2 >50 mm Hg between children with PWS and controls for OAHI <1 episode/h, 1-5 episodes/h and >5 episodes/h were +0.2%, +1% and +33%, respectively. CONCLUSION Increasing severity of upper airway obstruction during sleep in children with PWS is accompanied by disproportionately longer periods of hypoventilation when compared with non-syndromic children with similar frequency of obstructive events.
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Affiliation(s)
- Francois Abel
- Department of Paediatric Respiratory Medicine, Great Ormond Street Hospital, London, UK
| | - Hui-Leng Tan
- Department of Paediatric Respiratory Medicine, Royal Brompton Hospital, London, UK
| | - Valentina Negro
- Department of Paediatric Respiratory Medicine, Royal Brompton Hospital, London, UK
| | - Nicola Bridges
- Department of Paediatric Endocrinology, Chelsea and Westminster Hospital, London, UK
| | - Thomas Carlisle
- Department of Paediatric Respiratory Medicine, Royal Brompton Hospital, London, UK
| | - Elaine Chan
- Department of Paediatric Respiratory Medicine, Great Ormond Street Hospital, London, UK
| | - Aidan Laverty
- Department of Paediatric Respiratory Medicine, Great Ormond Street Hospital, London, UK
| | - Michael Miligkos
- Paediatric Pulmonology Unit, First Department of Paediatrics, National and Kapodistrian University of Athens School of Medicine, Athens, Greece.,Department of Biomathematics, University of Thessaly School of Medicine, Larissa, Greece
| | - Martin Samuels
- Department of Paediatric Respiratory Medicine, Great Ormond Street Hospital, London, UK
| | - Athanasios G Kaditis
- Paediatric Pulmonology Unit, First Department of Paediatrics, National and Kapodistrian University of Athens School of Medicine, Athens, Greece
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Amaddeo A, De Sanctis L, Arroyo JO, Khirani S, Bahi-Buisson N, Fauroux B. Polysomnographic findings in Rett syndrome. Eur J Paediatr Neurol 2019; 23:214-221. [PMID: 30262236 DOI: 10.1016/j.ejpn.2018.09.003] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Revised: 08/27/2018] [Accepted: 09/04/2018] [Indexed: 01/15/2023]
Abstract
INTRODUCTION Rett syndrome (RS) is a severe neurodevelopment disorder associated with abnormal breathing during wakefulness and disturbed nocturnal behaviour. Breathing abnormalities during daytime have been extensively reported but polysomnographic (PSG) findings have been poorly studied. MATERIALS AND METHODS Consecutive patients with RS carrying distinct mutations in MECP2 gene, who underwent a PSG between October 2014 and January 2018, were included in the study. Clinical and PSG data were collected. RESULTS Seventeen RS girls, mean age 9.5 ± 2.8 years, were included in the study. Mean total sleep time was 366 ± 102 min. Mean sleep efficiency was reduced (66 ± 19%) with only 3 girls presenting a sleep efficiency above 80%. Wake after sleep onset was increased (33 ± 20%) with an arousal index of 7 ± 6 events/hour. Sleep stages were altered with a normal N1 (2 ± 3%), a decreased N2 (34 ± 20%), an increase of N3 (51 ± 23%) and a decrease of REM sleep (12 ± 9%). Mean apnea hypopnea index (AHI) was increased at 19 ± 37 events/hour, with a predominance of obstructive events. Thirteen patients had an AHI > 1.5 event/hour. Four patients had an obstructive AHI >10 events/hour with one patient having associated tonsillar hypertrophy. Two patients had predominant severe central apneas (central AHI 53 and 132 events/hour) which resolved with noninvasive ventilation and nocturnal oxygen therapy respectively. CONCLUSION Girls with RS have poor sleep quality with alterations in slow wave and REM sleep stages. Obstructive respiratory events are uncommon in patients without adenotonsillar hypertrophy. Central respiratory events are rare. Longitudinal studies should help understanding the natural history of sleep disturbances in RS and their relationship with the neurocognitive decline.
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Affiliation(s)
- Alessandro Amaddeo
- Pediatric Noninvasive Ventilation and Sleep Unit, AP-HP, Hôpital Necker-Enfants Malades, Paris, France; Paris Descartes University, Paris, France; Research Unit INSERM U 955, Team 13, Créteil, France.
| | - Livio De Sanctis
- Pediatric Noninvasive Ventilation and Sleep Unit, AP-HP, Hôpital Necker-Enfants Malades, Paris, France
| | - Jorge Olmo Arroyo
- Pediatric Noninvasive Ventilation and Sleep Unit, AP-HP, Hôpital Necker-Enfants Malades, Paris, France
| | - Sonia Khirani
- Pediatric Noninvasive Ventilation and Sleep Unit, AP-HP, Hôpital Necker-Enfants Malades, Paris, France; ASV Santé, Gennevilliers, France
| | - Nadia Bahi-Buisson
- Paris Descartes University, Paris, France; Pediatric Neurology Departement, AP-HP, Hôpital Necker-Enfants Malades, Paris, France
| | - Brigitte Fauroux
- Pediatric Noninvasive Ventilation and Sleep Unit, AP-HP, Hôpital Necker-Enfants Malades, Paris, France; Paris Descartes University, Paris, France; Research Unit INSERM U 955, Team 13, Créteil, France
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21
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Obstructive events in children with Prader-Willi syndrome occur predominantly during rapid eye movement sleep. Sleep Med 2018; 54:43-47. [PMID: 30529776 DOI: 10.1016/j.sleep.2018.09.026] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Revised: 09/26/2018] [Accepted: 09/29/2018] [Indexed: 12/11/2022]
Abstract
OBJECTIVE Children with Prader-Willi syndrome (PWS) have a high prevalence of obstructive sleep apnea syndrome (OSAS). In most typically developing children with OSAS, more obstructive apneas and hypopneas occur during rapid eye movement (REM) than during non-REM (NREM) sleep. It was hypothesized that patients with PWS are even more prone to obstructive events in REM sleep than otherwise healthy subjects with OSAS. METHODS Polysomnographic data of patients with PWS and of typically developing children (controls) with OSAS (apnea-hypopnea index [AHI] > 1 episode/h) were analyzed. The two groups were compared regarding obstructive AHI (OAHI), OAHI during NREM sleep (OAHInrem), OAHI during REM sleep (OAHIrem), and the OAHIrem/OAHI ratio (outcome measures). The association between PWS diagnosis and OAHIrem/OAHI was adjusted for confounders using a general linear model. RESULTS Twelve children with PWS (median age 7.1 years [interquartile range 3.5, 12.4 years]) and 53 controls (6.5 years [3.9, 8.7 years]) were studied. Children with PWS and controls were similar regarding OAHI (p = 0.21) and OAHInrem (p = 0.76). However, subjects with PWS had higher OAHIrem (17.6 episodes/h [5.8, 25.8 episodes/h]) and OAHIrem/OAHI (2.3 [1.5, 3.2]) than controls (5 episodes/h [1.5, 8.1 episodes/h]; p = 0.002 and 1 [0.5, 2]; p = 0.003, respectively). The association between PWS diagnosis and higher OAHIrem/OAHI persisted after adjustment for age, gender, and obesity (p = 0.009). CONCLUSION In children with PWS, OAHI calculated for total sleep time does not reflect OSAS severity during REM sleep, which on average can be twice as high. Mild OSAS in patients with PWS demonstrated by polygraphy without sleep staging may correspond to a moderately-to-severely increased OAHIrem.
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22
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Campbell J, FitzPatrick DR, Azam T, Gibson NA, Somerville L, Joss SK, Urquhart DS. NALCN Dysfunction as a Cause of Disordered Respiratory Rhythm With Central Apnea. Pediatrics 2018; 141:S485-S490. [PMID: 29610177 DOI: 10.1542/peds.2017-0026] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 05/31/2017] [Indexed: 11/24/2022] Open
Abstract
The sodium leak channel nonselective protein (NALCN) is a regulator of the pacemaker neurons that are responsible for rhythmic behavior (including respiration), maintaining the resting membrane potential, and are required for action potential production. NALCN-null mice show early death associated with disrupted respiratory rhythms, characterized by frequent and profound apneas. We report 3 children (2 siblings) with compound heterozygous mutations in NALCN associated with developmental impairment, hypotonia, and central sleep-disordered breathing causing apneas. Supplemental oxygen normalized the respiratory rhythm. NALCN mutations have been previously reported to cause severe hypotonia, speech impairment, and cognitive delay as well as infantile neuroaxonal dystrophy and facial dysmorphism. Nonsynonymous changes in the 2 affected extracellular loops may be responsible for the deleterious effect on the stability of the respiratory rhythm. Although oxygen is known to be a stabilizer of respiratory rhythm in central apnea in children, its role in NALCN dysfunction requires further investigation.
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Affiliation(s)
- Jamie Campbell
- Department of Clinical Genetics, Centre for Genomic and Experimental Medicine and
| | - David R FitzPatrick
- Medical Research Council Human Genetics Unit, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, United Kingdom
| | - Tara Azam
- South-East Scotland Regional Genetics Laboratories, Western General Hospital, Edinburgh, United Kingdom
| | - Neil A Gibson
- Department of Respiratory and Sleep Medicine, Royal Hospital for Children, Glasgow, United Kingdom
| | - Laura Somerville
- Specialist Children's Services, The West Centre, Glasgow, United Kingdom
| | - Shelagh K Joss
- West of Scotland Clinical Genetics Service, Queen Elizabeth University Hospital, Govan, United Kingdom
| | | | - Don S Urquhart
- Department of Pediatric Respiratory and Sleep Medicine, Royal Hospital for Sick Children, Edinburgh, United Kingdom
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Kaditis AG, Alonso Alvarez ML, Boudewyns A, Abel F, Alexopoulos EI, Ersu R, Joosten K, Larramona H, Miano S, Narang I, Tan HL, Trang H, Tsaoussoglou M, Vandenbussche N, Villa MP, Van Waardenburg D, Weber S, Verhulst S. ERS statement on obstructive sleep disordered breathing in 1- to 23-month-old children. Eur Respir J 2017; 50:50/6/1700985. [PMID: 29217599 DOI: 10.1183/13993003.00985-2017] [Citation(s) in RCA: 91] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2017] [Accepted: 08/16/2017] [Indexed: 11/05/2022]
Abstract
The present statement was produced by a European Respiratory Society Task Force to summarise the evidence and current practice on the diagnosis and management of obstructive sleep disordered breathing (SDB) in children aged 1-23 months. A systematic literature search was completed and 159 articles were summarised to answer clinically relevant questions. SDB is suspected when symptoms or abnormalities related to upper airway obstruction are identified. Morbidity (pulmonary hypertension, growth delay, behavioural problems) and coexisting conditions (feeding difficulties, recurrent otitis media) may be present. SDB severity is measured objectively, preferably by polysomnography, or alternatively polygraphy or nocturnal oximetry. Children with apparent upper airway obstruction during wakefulness, those with abnormal sleep study in combination with SDB symptoms (e.g. snoring) and/or conditions predisposing to SDB (e.g. mandibular hypoplasia) as well as children with SDB and complex conditions (e.g. Down syndrome, Prader-Willi syndrome) will benefit from treatment. Adenotonsillectomy and continuous positive airway pressure are the most frequently used treatment measures along with interventions targeting specific conditions (e.g. supraglottoplasty for laryngomalacia or nasopharyngeal airway for mandibular hypoplasia). Hence, obstructive SDB in children aged 1-23 months is a multifactorial disorder that requires objective assessment and treatment of all underlying abnormalities that contribute to upper airway obstruction during sleep.
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Affiliation(s)
- Athanasios G Kaditis
- Paediatric Pulmonology Unit, First Dept of Paediatrics, National and Kapodistrian University of Athens School of Medicine and Aghia Sophia Children's Hospital, Athens, Greece
| | - Maria Luz Alonso Alvarez
- Multidisciplinary Sleep Unit, Pulmonology, University Hospital of Burgos and CIBER of Respiratory Diseases (CIBERES), Burgos Foundation for Health Research, Burgos, Spain
| | - An Boudewyns
- Dept of Otorhinolaryngology Head and Neck Surgery, Antwerp University Hospital, University of Antwerp, Antwerp, Belgium
| | - Francois Abel
- Dept of Respiratory Medicine, Great Ormond Street Hospital for Children, London, UK
| | - Emmanouel I Alexopoulos
- Sleep Disorders Laboratory, University of Thessaly School of Medicine and Larissa University Hospital, Larissa, Greece
| | - Refika Ersu
- Division of Paediatric Pulmonology, Marmara University, Istanbul, Turkey
| | - Koen Joosten
- Erasmus MC, Sophia Children's Hospital, Paediatric Intensive Care, Rotterdam, The Netherlands
| | - Helena Larramona
- Paediatric Pulmonology Unit, Dept of Paediatrics, University Autonoma of Barcelona, Corporacio Sanitaria Parc Tauli, Hospital of Sabadell, Barcelona, Spain
| | - Silvia Miano
- Sleep and Epilepsy Centre, Neurocentre of Southern Switzerland, Civic Hospital of Lugano, Lugano, Switzerland
| | - Indra Narang
- Division of Respiratory Medicine, Hospital for Sick Children, University of Toronto, Toronto, ON, Canada
| | - Hui-Leng Tan
- Dept of Paediatric Respiratory Medicine, Royal Brompton Hospital, London, UK
| | - Ha Trang
- Paediatric Sleep Centre, Robert Debré University Hospital, EA 7334 REMES Paris-Diderot University, Paris, France
| | - Marina Tsaoussoglou
- Paediatric Pulmonology Unit, First Dept of Paediatrics, National and Kapodistrian University of Athens School of Medicine and Aghia Sophia Children's Hospital, Athens, Greece
| | | | - Maria Pia Villa
- Paediatric Sleep Disease Centre, Child Neurology, NESMOS Dept, School of Medicine and Psychology, Sapienza University of Rome, S. Andrea Hospital, Rome, Italy
| | - Dick Van Waardenburg
- Paediatric Intensive Care Unit, Dept of Paediatrics, Maastricht University Medical Center, Maastricht, The Netherlands
| | - Silke Weber
- Dept of Ophthalmology, Otolaryngology and Head and Neck Surgery, Botucatu Medical School, São Paulo State University-UNESP, Botucatu, São Paulo, Brazil
| | - Stijn Verhulst
- Dept of Paediatrics, Antwerp University Hospital, Edegem, Belgium
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24
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Matarazzo V, Caccialupi L, Schaller F, Shvarev Y, Kourdougli N, Bertoni A, Menuet C, Voituron N, Deneris E, Gaspar P, Bezin L, Durbec P, Hilaire G, Muscatelli F. Necdin shapes serotonergic development and SERT activity modulating breathing in a mouse model for Prader-Willi syndrome. eLife 2017; 6:32640. [PMID: 29087295 PMCID: PMC5711373 DOI: 10.7554/elife.32640] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Accepted: 10/29/2017] [Indexed: 12/31/2022] Open
Abstract
Prader-Willi syndrome (PWS) is a genetic neurodevelopmental disorder that presents with hypotonia and respiratory distress in neonates. The Necdin-deficient mouse is the only model that reproduces the respiratory phenotype of PWS (central apnea and blunted response to respiratory challenges). Here, we report that Necdin deletion disturbs the migration of serotonin (5-HT) neuronal precursors, leading to altered global serotonergic neuroarchitecture and increased spontaneous firing of 5-HT neurons. We show an increased expression and activity of 5-HT Transporter (SERT/Slc6a4) in 5-HT neurons leading to an increase of 5-HT uptake. In Necdin-KO pups, the genetic deletion of Slc6a4 or treatment with Fluoxetine, a 5-HT reuptake inhibitor, restored normal breathing. Unexpectedly, Fluoxetine administration was associated with respiratory side effects in wild-type animals. Overall, our results demonstrate that an increase of SERT activity is sufficient to cause the apneas in Necdin-KO pups, and that fluoxetine may offer therapeutic benefits to PWS patients with respiratory complications. Prader-Willi syndrome results from the disruption of a cluster of neighboring genes, including one called Necdin. Symptoms begin in early infancy and worsen with age. Affected children tend to develop an insatiable appetite, which often leads to obesity. They also experience serious problems with their breathing. Chest infections, high altitude and intense physical activity can be dangerous for children with Prader-Willi syndrome. This is because a slight shortage of oxygen may trigger breathing difficulties that could prove fatal. The brain cells that produce a chemical messenger called serotonin help to control breathing. Several lines of evidence suggest that loss of Necdin may trigger breathing difficulties in Prader-Willi syndrome via effects on the serotonin system. First, serotonin neurons produce the Necdin protein. Second, laboratory mice that lack the gene for Necdin have abnormally shaped serotonin neurons. Third, these mice show breathing difficulties like those of individuals with Prader-Willi syndrome. But while this implies a connection between serotonin, Necdin and breathing difficulties, it falls short of establishing a causal link. Matarazzo et al. now reveal an increase in the quantity and activity of a protein called the serotonin transporter in mutant mice that lacked the gene for Necdin compared to normal mice. Serotonin transporter proteins mop up the serotonin that neurons release when they signal to one another. Neurons in the mutant mice take up more serotonin than their counterparts in normal mice; this means they have less serotonin available for signaling. This may make it harder for the mutant mice to regulate their breathing. Drugs called selective serotonin-reuptake inhibitors (or SSRIs for short) can block the serotonin transporter. These drugs, which include Fluoxetine (also called Prozac), are antidepressants. Matarazzo et al. show that SSRIs temporarily restore normal breathing in young mice that lack the gene for Necdin. However, these drugs have harmful long-term effects on breathing in non-mutant mice. Further studies should test whether short-term use of SSRIs could offer immediate relief for breathing difficulties in infants and children with Prader-Willi syndrome.
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Affiliation(s)
| | | | | | - Yuri Shvarev
- Department of Women's and Children's Health, Karolinska Institute, Solna, Sweden
| | | | | | | | | | - Evan Deneris
- Department of Neurosciences, Case Western Reserve University, Cleveland, United States
| | - Patricia Gaspar
- UPMC Univ Paris 6, Institut du Fer à Moulin, INSERM, Paris, France
| | - Laurent Bezin
- Lyon Neuroscience Research Center, Université de Lyon, INSERM, CNRS, Lyon, France
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25
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Dosier LBM, Vaughn BV, Fan Z. Sleep Disorders in Childhood Neurogenetic Disorders. CHILDREN-BASEL 2017; 4:children4090082. [PMID: 28895939 PMCID: PMC5615272 DOI: 10.3390/children4090082] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Revised: 08/16/2017] [Accepted: 08/21/2017] [Indexed: 01/13/2023]
Abstract
enetic advances in the past three decades have transformed our understanding and treatment of many human diseases including neurogenetic disorders. Most neurogenetic disorders can be classified as "rare disease," but collectively neurogenetic disorders are not rare and are commonly encountered in general pediatric practice. The authors decided to select eight relatively well-known neurogenetic disorders including Down syndrome, Angelman syndrome, Prader-Willi syndrome, Smith-Magenis syndrome, congenital central hypoventilation syndrome, achondroplasia, mucopolysaccharidoses, and Duchenne muscular dystrophy. Each disorder is presented in the following format: overview, clinical characteristics, developmental aspects, associated sleep disorders, management and research/future directions.
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Key Words
- Neurogenetic, Sleep, Neurodevelopmental, Angelman, Down syndrome, Trisomy 21, Smith–Magenis, Muchopolysaccharidosis, Achondroplasia, Duchenne, Congenital Central Hypoventilation
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Affiliation(s)
- Laura Beth Mann Dosier
- Department of Neurology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA.
| | - Bradley V Vaughn
- Department of Neurology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA.
| | - Zheng Fan
- Department of Neurology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA.
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26
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Pamula Y, Nixon GM, Edwards E, Teng A, Verginis N, Davey MJ, Waters K, Suresh S, Twiss J, Tai A. Australasian Sleep Association clinical practice guidelines for performing sleep studies in children. Sleep Med 2017. [DOI: 10.1016/j.sleep.2017.03.020] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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27
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Khayat A, Narang I, Bin-Hasan S, Amin R, Al-Saleh S. Longitudinal evaluation of sleep disordered breathing in infants with Prader-Willi syndrome. Arch Dis Child 2017; 102:634-638. [PMID: 28130217 DOI: 10.1136/archdischild-2016-311298] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Revised: 01/01/2017] [Accepted: 01/04/2017] [Indexed: 11/04/2022]
Abstract
OBJECTIVE To evaluate the course of sleep disordered breathing (SDB) in infants with Prader-Willi syndrome (PWS). DESIGN Retrospective longitudinal observational study. SETTING Sleep laboratory at The Hospital for Sick Children, Toronto, Canada. PATIENTS Infants with PWS. MAIN OUTCOME MEASURES The natural history of SDB in infants with PWS within 2 years from baseline assessment. RESULTS We identified 28 (12 male) infants with PWS who had a baseline polysomnography (PSG) at a median age (interquartile (IQR)) of 0.9 (0.5, 1.1) years. The median central apnoea index (CAI) at baseline was 6.6 events/hour (IQR 2.6, 12.1). Of these, 15/28 (53%) infants with PWS were diagnosed with significant central sleep apnoea (CSA) (CAI≥5 events/hour). Median age (IQR) at follow-up PSG was 2.1 (1.5, 2.6) years. The median CAI improved from 6.6 to 2.3 events/hour (p<0.0001). Only four infants with PWS had persistent CSA at the time of the follow-up PSG. Furthermore, three infants with PWS were diagnosed with mild-to-moderate obstructive sleep apnoea (OSA) that has improved at follow-up studies whereas two patients with PWS with no evidence of OSA at baseline were diagnosed with severe OSA on the follow-up PSG requiring adenotonsillectomy. The overall median obstructive apnoea-hypopnoea index was similar between baseline and follow-up studies (0.6 and 0.8, respectively, p=0.91). CONCLUSIONS CSA is prevalent in infants with PWS but usually improves with age. However, these patients continue to require ongoing PSG surveillance because some infants will have persistent CSA and others are at risk of developing OSA.
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Affiliation(s)
- Abdullah Khayat
- University of Toronto, Toronto, Ontario, Canada.,Division of Respiratory Medicine, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Indra Narang
- University of Toronto, Toronto, Ontario, Canada.,Division of Respiratory Medicine, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Saadoun Bin-Hasan
- University of Toronto, Toronto, Ontario, Canada.,Division of Respiratory Medicine, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Reshma Amin
- University of Toronto, Toronto, Ontario, Canada.,Division of Respiratory Medicine, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Suhail Al-Saleh
- University of Toronto, Toronto, Ontario, Canada.,Division of Respiratory Medicine, The Hospital for Sick Children, Toronto, Ontario, Canada
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28
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Abstract
Subspecialty pediatric practice provides comprehensive medical care for a range of ages, from premature infants to children, and often includes adults with complex medical and surgical issues that warrant multidisciplinary care. Normal physiologic variations involving different body systems occur during sleep and these vary with age, stage of sleep, and underlying health conditions. This article is a concise review of the cardiovascular (CV) physiology and pathophysiology in children, sleep-disordered breathing (SDB) contributing to CV morbidity, congenital and acquired CV pathology resulting in SDB, and the relationship between SDB and CV morbidity in different clinical syndromes and systemic diseases in the expanded pediatric population.
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Affiliation(s)
- Grace R Paul
- Division of Pulmonary and Sleep Medicine, Nationwide Children's Hospital, The Ohio State University, 700 Children's Drive, Columbus, OH 43205, USA.
| | - Swaroop Pinto
- Division of Pulmonary and Sleep Medicine, Nationwide Children's Hospital, The Ohio State University, 700 Children's Drive, Columbus, OH 43205, USA
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29
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Tan HL, Urquhart DS. Respiratory Complications in Children with Prader Willi Syndrome. Paediatr Respir Rev 2017; 22:52-59. [PMID: 27839656 DOI: 10.1016/j.prrv.2016.08.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Accepted: 08/05/2016] [Indexed: 01/31/2023]
Abstract
Prader Willi syndrome, resulting from the partial deletion or lack of expression of a region of genes on the paternal chromosome 15, has a number of phenotypic features which predispose affected patients to ventilatory problems. These include generalised hypotonia, abnormal arousal and ventilatory responses to hypoxia and hypercapnia, scoliosis and frequently, obesity. The spectrum of the resulting respiratory complications thus runs from sleep disordered breathing, to aspiration and respiratory functional impairment. While the use of growth hormone, in conjunction with multidisciplinary clinical management, is currently the cornerstone of clinical care of these patients, concerns have been raised following reports of sudden death shortly after growth hormone initiation. This review summarizes the respiratory complications commonly seen and draws together the published literature on the impact of growth hormone in relation to various respiratory parameters, aiming to provide the reader with the necessary information to manage these patients as safely as possible.
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Affiliation(s)
- H-L Tan
- Department of Paediatric Respiratory and Sleep Medicine, Royal Brompton Hospital, London.
| | - D S Urquhart
- Department of Paediatric Respiratory and Sleep Medicine, Royal Hospital for Sick Children, Edinburgh; Department of Child Life and Health, University of Edinburgh
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30
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Central apneas in children with obstructive sleep apnea syndrome: prevalence and effect of upper airway surgery. Sleep Med 2016; 25:93-97. [DOI: 10.1016/j.sleep.2016.05.018] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2016] [Revised: 05/17/2016] [Accepted: 05/19/2016] [Indexed: 11/20/2022]
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31
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Gillett ES, Perez IA. Disorders of Sleep and Ventilatory Control in Prader-Willi Syndrome. Diseases 2016; 4:diseases4030023. [PMID: 28933403 PMCID: PMC5456282 DOI: 10.3390/diseases4030023] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Revised: 07/01/2016] [Accepted: 07/04/2016] [Indexed: 11/16/2022] Open
Abstract
Prader-Willi syndrome (PWS) is an imprinted genetic disorder conferred by loss of paternal gene expression from chromosome 15q11.2-q13. Individuals with PWS have impairments in ventilatory control and are predisposed toward sleep disordered breathing due to a combination of characteristic craniofacial features, obesity, hypotonia, and hypothalamic dysfunction. Children with PWS progress from failure to thrive during infancy to hyperphagia and morbid obesity during later childhood and onward. Similarly, the phenotype of sleep disordered breathing in PWS patients also evolves over time from predominantly central sleep apnea in infants to obstructive sleep apnea (OSA) in older children. Behavioral difficulties are common and may make establishing effective therapy with continuous positive airway pressure (CPAP) more challenging when OSA persists after adenotonsillectomy. Excessive daytime sleepiness (EDS) is also common in patients with PWS and may continue after OSA is effectively treated. We describe here the characteristic ventilatory control deficits, sleep disordered breathing, and excessive daytime sleepiness seen in individuals with PWS. We review respiratory issues that may contribute to sudden death events in PWS patients during sleep and wakefulness. We also discuss therapeutic options for treating sleep disordered breathing including adenotonsillectomy, weight loss, and CPAP. Lastly, we discuss the benefits and safety considerations related to growth hormone therapy.
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Affiliation(s)
- Emily S Gillett
- Division of Pediatric Pulmonology and Sleep Medicine, Children's Hospital Los Angeles, 4650 Sunset Blvd, Mailstop #83, Los Angeles, CA 90027, USA.
| | - Iris A Perez
- Division of Pediatric Pulmonology and Sleep Medicine, Children's Hospital Los Angeles, 4650 Sunset Blvd, Mailstop #83, Los Angeles, CA 90027, USA.
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32
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Abstract
EDUCATIONAL AIMS The reader will be able to: Understand normal sleep patterns in infancyAppreciate disorders of breathing in infancyAppreciate disorders of respiratory control. Normal sleep in infancy is a time of change with alterations in sleep architecture, sleep duration, sleep patterns and respiratory control as an infant grows older. Interactions between sleep and respiration are key to the mechanisms by which infants are vulnerable to sleep disordered breathing. This review discusses normal sleep in infancy, as well as normal sleep breathing in infancy. Sleep disordered breathing (obstructive and central) as well as disorders of ventilatory control and infant causes of hypoventilation are all reviewed in detail.
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Affiliation(s)
- Don S. Urquhart
- Dept of Paediatric Respiratory and Sleep Medicine, Royal Hospital for Sick Children, Edinburgh, UK
- Dept of Child Life and Health, University of Edinburgh, Edinburgh, UK
| | - Hui-Leng Tan
- Dept of Paediatric Respiratory and Sleep Medicine, Royal Brompton Hospital, London, UK
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33
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The usefulness of biliopancreatic diversion/Scopinaro operation in treatment of patients with Prader-Willi syndrome. Wideochir Inne Tech Maloinwazyjne 2015; 10:324-7. [PMID: 26240637 PMCID: PMC4520834 DOI: 10.5114/wiitm.2015.49669] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2014] [Revised: 08/17/2014] [Accepted: 01/07/2015] [Indexed: 11/29/2022] Open
Abstract
Prader-Willi syndrome (PWS) is the most common form of obesity with a genetic basis. The short expected survival time due to numerous accompanying diseases and their complications is the reason for research on the maximally efficient method of treatment of obesity in this syndrome. Undertaken attempts of conservative treatment, for example with somatostatin, are ineffective. It seems that the only effective treatment of obesity in this syndrome may be surgical. In this article we present 2 cases of patients with PWS who underwent surgery consisting of biliopancreatic diversion (BPD)/Scopinaro procedure. The BPD/Scopinaro operation in selected cases of disciplined patients with a co-operative family, which we find of key importance, can be considered as one option of treatment of this syndrome in patients with prior neglect of conservative treatment.
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34
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Spruyt K, Curfs LMG. Non-pharmacological management of problematic sleeping in children with developmental disabilities. Dev Med Child Neurol 2015; 57:120-36. [PMID: 25370592 DOI: 10.1111/dmcn.12623] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 08/28/2014] [Indexed: 12/23/2022]
Abstract
AIM Sleep is important for underlying neural plasticity, and children with developmental disabilities suffer behavioural, emotional, cognitive, and sensory-motor issues that affect their wake and sleep states. Problematic sleeping can be hypothesized to have adverse effects on both of these areas in children with developmental disabilities. With this review, we aim to provide a benchmark in managing problematic sleeping in children with developmental disabilities. METHOD A literature search was conducted and data on the study descriptives, patient characteristics, study design, study-related factors, criteria applied to operationalize sleep and developmental disability, and sleep 'management' were collected. Each management strategy was tabulated and analysed. RESULTS We identified 90 studies involving 1460 children with developmental disabilities, of whom 61.6% were male. The highest proportion of studies, almost half, were in children with syndromes (44.4%), followed by studies in children with intellectual disabilities (18.9%). Non-pharmacological sleep management was primarily aimed at improving sleep quality (86.7%), followed by sleep-wake schedules and, to a certain extent, sleep regularity (42.2%). About 56.7% of the studies reported more than one approach. Studies mostly focused on disorders of initiating and maintaining sleep through a diversity of strategies and relied heavily on subjective measures to identify and monitor problematic sleeping. Sleep management approaches were primarily delivered at the level of the individual in the home setting. The number of management approaches per study was unrelated to the number of sleep problems discussed. INTERPRETATION Modifying sleep management strategies to meet the specific needs of children with developmental disabilities is encouraged, and studies that look beyond sleep quality or sleep quantity are required. It is also advocated that modifications to sleep hygiene, sleep regularity, and sleep ecology in a population with developmental disabilities are rigorously investigated. Finally, daytime somnolence should not be overlooked when aiming to optimize sleep in children with developmental disabilities across the ages and stages of their lives. There were several limitations in the research findings of problematic sleep in children with developmental disabilities. In general, the sleep problems and the developmental disabilities investigated were multicomponent in nature. It is likely that management approaches impacted those problems on multiple levels or through diverse 'therapeutic' pathways. There is a need for randomized controlled trials and more objective measures that quantify improved sleep or wake states.
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Affiliation(s)
- Karen Spruyt
- Maastricht University Medical Centre, Rett Expertise Centre-Governor Kremers Centre, Maastricht, the Netherlands; Department of Developmental and Behavioral Pediatrics, Shanghai Children's Medical Center, Shanghai, China
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35
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Abstract
Sleep respiration is regulated by circadian, endocrine, mechanical and chemical factors, and characterized by diminished ventilatory drive and changes in Pao2 and Paco2 thresholds. Hypoxemia and hypercapnia are more pronounced during rapid eye movement. Breathing is influenced by sleep stage and airway muscle tone. Patient factors include medical comorbidities and body habitus. Medications partially improve obstructive sleep apnea and stabilize periodic breathing at altitude. Potential adverse consequences of medications include precipitation or worsening of disorders. Risk factors for adverse medication effects include aging, medical disorders, and use of multiple medications that affect respiration.
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Affiliation(s)
- Gilbert Seda
- Department of Pulmonary and Sleep Medicine, Naval Medical Center San Diego, 34730 Bob Wilson Drive, Building 3-3, Suite 301, San Diego, CA 92134, USA.
| | - Sheila Tsai
- Division of Pulmonary, Critical Care and Sleep Medicine, National Jewish Health, 1400 Jackson Street, Denver, CO 80206, USA
| | - Teofilo Lee-Chiong
- Division of Pulmonary and Critical Care Medicine, National Jewish Health, University of Colorado, 1400 Jackson Street, Denver, CO 80206, USA
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36
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Cohen M, Hamilton J, Narang I. Clinically important age-related differences in sleep related disordered breathing in infants and children with Prader-Willi Syndrome. PLoS One 2014; 9:e101012. [PMID: 24979549 PMCID: PMC4076199 DOI: 10.1371/journal.pone.0101012] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2013] [Accepted: 06/02/2014] [Indexed: 12/12/2022] Open
Abstract
Background Sleep related disordered breathing (SDB) in pediatric Prader-Willi Syndrome is gaining increased attention due to the possible association of growth hormone therapy, SDB and sudden death. However data on the patterns of SDB and their management, particularly in infants in this population, is lacking. Objective The aim of this study was to 1) describe patterns of SDB in growth hormone naive infants with PWS and the management of these disorders in our institution 2) Compare the patterns of sleep disorders between infants and children with PWS. Methods and Design Polysomnograms of infants and children (0–18 years of age) with Prader-Willi Syndrome were reviewed. Age, sex, anthropometrics, sleep architecture, obstructive and central apnea indices and oxygen saturations were recorded. Data of infants with central sleep apnea treated with oxygen were analyzed to evaluate the efficacy of this treatment. The main outcome measures were obstructive and central apnea indices on a polysomnogram. Results Data of 44 patients, 23 under 2 years of age and 21 older children were included. Infants when compared with older children were more likely to experience central sleep apnea (43% vs. 5%; p = 0.003). In older children obstructive was significantly more prevalent than central sleep apnea. Supplemental oxygen was used to treat 9/23 infants with central sleep apnea. Oxygen therapy resulted in a significant decrease in the median central apnea index from 14 (5,68) to 1 (0,6; p = 0.008) events/hour and an improvement in the oxygen saturation nadir from 70% (52, 92) to 81% (64, 95; p = 0.080). Conclusions Central sleep apnea with associated oxygen desaturations is more prevalent in infants compared with older children with Prader-Willi Syndrome. Supplemental oxygen was efficacious in treating central sleep apnea in infants. Routine sleep surveillance for all children with Prader-Willi Syndrome and treatment with oxygen for central sleep apnea should be considered.
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MESH Headings
- Adolescent
- Age Factors
- Child
- Child, Preschool
- Female
- Humans
- Infant
- Infant, Newborn
- Male
- Oxygen Inhalation Therapy
- Polysomnography
- Prader-Willi Syndrome/complications
- Prader-Willi Syndrome/diagnosis
- Prader-Willi Syndrome/physiopathology
- Prader-Willi Syndrome/therapy
- Sleep Apnea, Central/complications
- Sleep Apnea, Central/diagnosis
- Sleep Apnea, Central/physiopathology
- Sleep Apnea, Central/therapy
- Sleep Apnea, Obstructive/complications
- Sleep Apnea, Obstructive/diagnosis
- Sleep Apnea, Obstructive/physiopathology
- Sleep Apnea, Obstructive/therapy
- Treatment Outcome
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Affiliation(s)
- Michal Cohen
- Division of Endocrinology, The Hospital for Sick Children, Toronto, Ontario, Canada
- The University of Toronto, Toronto, Ontario, Canada
- * E-mail:
| | - Jill Hamilton
- Division of Endocrinology, The Hospital for Sick Children, Toronto, Ontario, Canada
- The University of Toronto, Toronto, Ontario, Canada
| | - Indra Narang
- The University of Toronto, Toronto, Ontario, Canada
- Division of Respiratory Medicine, The Hospital for Sick Children, Toronto, Ontario, Canada
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Abstract
Prader-Willi Syndrome is a complex neurogenetic disorder characterized by appetite dysregulation, obesity with decreased muscle mass and increased fat mass, behavioral problems, various endocrinopathies, and sleep and respiratory abnormalities. Respiratory issues include both central and obstructive sleep apnea, excessive daytime sleepiness, narcolepsy, and impaired ventilatory control. There is some controversy as to whether growth hormone treatment, which is the standard of care for patients with Prader-Willi Syndrome, exacerbates or ameliorates the sleep-disordered breathing issues associated with this syndrome. The natural history of sleep and breathing issues and the issues surrounding growth hormone treatment on sleep-disordered breathing are discussed.
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