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Feller C, Senthilvel E. Sleep-Disordered Breathing in an Infant With Achondroplasia and Foramen Magnum Stenosis. Cureus 2024; 16:e56291. [PMID: 38623108 PMCID: PMC11018364 DOI: 10.7759/cureus.56291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/16/2024] [Indexed: 04/17/2024] Open
Abstract
Sleep-disordered breathing (SDB) is a frequently recognized comorbidity in infants and children with achondroplasia due to alterations in craniofacial and upper airway anatomy. Foramen magnum stenosis and cervicomedullary compression can be associated with SDB in this population, requiring prompt evaluation by multidisciplinary teams. Untreated SDB is associated with adverse cardiovascular, metabolic, and behavioral effects in children, necessitating early screening and treatment of underlying causes. Cervicomedullary compression is also associated with increased mortality and sudden infant death in infants with achondroplasia. Management of SDB in children with achondroplasia may involve a combination of neurosurgical intervention, adenotonsillectomy, and/or continuous positive airway pressure (CPAP). We recognize a need for increased physician awareness of the recommended screening guidelines to optimize health outcomes for children with achondroplasia. In this report, we describe a case of a five-month-old infant with achondroplasia and severe SDB diagnosed by polysomnography and was found to have moderate-to-severe foramen magnum stenosis identified by MRI. Subsequently, this infant underwent foramen magnum decompression, which improved the severe SDB and was followed up for five years. Our case illustrates the importance of early screening in infants with achondroplasia for SDB to prevent further sequelae.
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Affiliation(s)
- Claire Feller
- Pediatrics, School of Medicine, University of Louisville, Louisville, USA
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Tofts LJ, Armstrong JA, Broley S, Carroll T, Ireland PJ, Koo M, Langdon K, McGregor L, McKenzie F, Mehta D, Savarirayan R, Tate T, Wesley A, Zankl A, Jenner M, Eyles M, Pacey V. Australian guidelines for the management of children with achondroplasia. J Paediatr Child Health 2023; 59:229-241. [PMID: 36628540 PMCID: PMC10107108 DOI: 10.1111/jpc.16290] [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: 06/03/2022] [Revised: 10/14/2022] [Accepted: 10/23/2022] [Indexed: 01/12/2023]
Abstract
Achondroplasia is the most common form of skeletal dysplasia. In addition to altered growth, children and young people with achondroplasia may experience medical complications, develop and function differently to others and require psychosocial support. International, European and American consensus guidelines have been developed for the management of achondroplasia. The Australian focused guidelines presented here are designed to complement those existing guidelines. They aim to provide core care recommendations for families and clinicians, consolidate key resources for the management of children with achondroplasia, facilitate communication between specialist, local teams and families and support delivery of high-quality care regardless of setting and geographical location. The guidelines include a series of consensus statements, developed using a modified Delphi process. These statements are supported by the best available evidence assessed using the National Health and Medicine Research Council's criteria for Level of Evidence and their Grading of Recommendations Assessment, Development and Evaluation (GRADE). Additionally, age specific guides are presented that focus on the key domains of growth, medical, development, psychosocial and community. The guidelines are intended for use by health professionals and children and young people with achondroplasia and their families living in Australia.
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Affiliation(s)
- Louise J Tofts
- Department of Health Sciences, Macquarie University, Sydney, New South Wales, Australia.,Kids Rehab, The Children's Hospital at Westmead, Sydney, New South Wales, Australia
| | - Jennifer A Armstrong
- Department of Health Sciences, Macquarie University, Sydney, New South Wales, Australia.,Department of Orthopaedics, The Children's Hospital at Westmead, Sydney, New South Wales, Australia
| | - Stephanie Broley
- Genetic Services of Western Australia, King Edward Memorial Hospital, Perth, Western Australia, Australia.,Undiagnosed Diseases Program, Perth Children's Hospital, Perth, Western Australia, Australia
| | - Theresa Carroll
- Queensland Paediatric Rehabilitation Service, Queensland Children's Hospital, Brisbane, Queensland, Australia
| | - Penelope J Ireland
- Queensland Paediatric Rehabilitation Service, Queensland Children's Hospital, Brisbane, Queensland, Australia.,School of Health and Rehabilitation Sciences, University of Queensland, Brisbane, Queensland, Australia
| | - Minna Koo
- Kids Rehab, The Children's Hospital at Westmead, Sydney, New South Wales, Australia.,The Children's Hospital at Westmead Clinical School, University of Sydney, Sydney, New South Wales, Australia
| | - Katherine Langdon
- Kids Rehab WA, Perth Children's Hospital, Perth, Western Australia, Australia.,Telethon Kids Institute, Perth, Western Australia, Australia
| | - Lesley McGregor
- Paediatric and Reproductive Genetics Unit, Women's and Children's Hospital, Adelaide, Australia
| | - Fiona McKenzie
- Genetic Services of Western Australia, King Edward Memorial Hospital, Perth, Western Australia, Australia.,School of Paediatrics and Child Health, University of Western Australia, Perth, Western Australia, Australia
| | - Divyesh Mehta
- Curtin University, Perth, Western Australia, Australia.,Child and Adolescent Health Services, Perth Children's Hospital, Perth, Western Australia, Australia
| | - Ravi Savarirayan
- Skeletal Therapies, Murdoch Children's Research Institute, Melbourne, Victoria, Australia.,University of Melbourne, Melbourne, Victoria, Australia
| | - Tracy Tate
- Kids Rehab, The Children's Hospital at Westmead, Sydney, New South Wales, Australia
| | - Alison Wesley
- Kids Rehab, The Children's Hospital at Westmead, Sydney, New South Wales, Australia
| | - Andreas Zankl
- The Children's Hospital at Westmead Clinical School, University of Sydney, Sydney, New South Wales, Australia.,Department of Clinical Genetics, The Children's Hospital at Westmead, Sydney, New South Wales, Australia
| | - Maree Jenner
- Medical Advisory Board, Short Statured People of Australia, Melbourne, Victoria, Australia
| | - Marta Eyles
- Medical Advisory Board, Short Statured People of Australia, Melbourne, Victoria, Australia
| | - Verity Pacey
- Department of Health Sciences, Macquarie University, Sydney, New South Wales, Australia.,The Children's Hospital at Westmead Clinical School, University of Sydney, Sydney, New South Wales, Australia
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Stender M, Pimenta JM, Cheung M, Irving M, Mukherjee S. Comprehensive literature review on the prevalence of comorbid conditions in patients with achondroplasia. Bone 2022; 162:116472. [PMID: 35728791 DOI: 10.1016/j.bone.2022.116472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 06/02/2022] [Accepted: 06/14/2022] [Indexed: 11/18/2022]
Abstract
BACKGROUND Achondroplasia (ACH) is a rare, genetic condition and is the most common skeletal dysplasia resulting in disproportionate short stature and numerous multi-systemic comorbidities. As we enter an era of new treatment options which may impact comorbidities, it is important to understand the background rates of these events to aid evaluation of potential treatment effects. Thus, the aim of this literature review was to provide a comprehensive quantification of prevalence estimates of comorbidities in achondroplasia by age for use as a compiled reference to assist in quantifying the risk/benefit of new treatment options and informing timely management of ACH. METHODS PubMed and Embase databases were searched, complemented by manual bibliography searching, for peer-reviewed articles published between 1975 and 2021, guided by PRISMA principles. Number of patients and the prevalence of specific comorbidities by age were extracted. We calculated exact 95 %-confidence limits for the proportion of affected patients (prevalence) and data were presented visually using forest plots. An a priori decision was made not to utilise meta-analytic techniques to pool estimates as we intended to understand the variability in comorbidities by displaying each estimate separately. RESULTS The literature search identified 206 articles of which 73 were eligible for inclusion. The majority of studies (n = 34) had been conducted in the USA or in Europe (n = 20). Study designs were mostly retrospective chart reviews (n = 33) or small cohort studies (n = 19). The availability of literature on particular conditions varied but trended towards a focus on assessment and prevention of severe conditions, such as respiratory conditions in children (21 studies), neurological manifestations (16 studies) and upper spine compression (15 studies). There was substantial heterogeneity in study design, type of clinical setting, populations and use of definitions in reporting comorbidities which need to be considered when interpreting study results. Despite the variability of the studies, comorbidity patterns by age were recognizable. In infants, a high prevalence (>20 %) was found for kyphosis, a range of neurological manifestations and sleep apnea. There was also an excess mortality in infancy (4-7.8/100 person-years). Conditions identified in infancy continued to prevail in childhood. Genu varum was highly prevalent from the age children started to walk (9-75 %). Other conditions started to emerge in children; those with a high prevalence (>20 %) were hearing loss and pain. In adolescence, neurological manifestations in the arm, neck or leg were reported (~15 %), consistent with symptomatic spinal stenosis or spinal compression. Fewer studies were available in older populations, especially in adults; however limited data suggest that pain and cardiovascular conditions, particularly excess weight and obesity, became more prevalent into adulthood. Mortality rates increased again in older age-groups. CONCLUSION This review provides a reference base of current knowledge of the type and frequency of comorbidities in ACH. This not only allows future contextualisation of new treatment options but supports clinical decision-making on the timely medical management and intervention of ACH. This review also reflects the current medical priorities in the management of ACH, indicating a focus on pediatric care and the complex needs of individuals with ACH involving many different disciplines. Further studies into the natural history of this rare disease using more consistent definitions of comorbidities, especially into adulthood, are needed to elucidate the multi-systemic nature of this condition.
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Affiliation(s)
| | | | - Moira Cheung
- Guy's and St Thomas' NHS Foundation Trust, London, UK
| | - Melita Irving
- Guy's and St Thomas' NHS Foundation Trust, London, UK
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Calandrelli R, Pilato F, D'Apolito G, Tenore L, Onesimo R, Leoni C, Zampino G, Colosimo C. Airways and craniofacial assessment in children affected by achondroplasia with and without sleep-disordered breathing: quantitative magnetic resonance study. Childs Nerv Syst 2022; 38:1147-1154. [PMID: 35277732 DOI: 10.1007/s00381-022-05484-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Accepted: 02/28/2022] [Indexed: 11/28/2022]
Abstract
PURPOSE To identify MRI-based quantitative craniofacial variables linked to airways narrowing and obstructive sleep apnea (OSA) development in children with achondroplasia. METHODS We evaluated skull base and midface MRI in two cohorts of children affected by achondroplasia, with (group 1) or without OSA (group 2). 3DFSPGR-T1weighted images were used to assess airways volume (nasopharynx, oropharynx, and laryngopharynx), jugular foramina (JF) and hypoglossal foramina (HF) areas, foramen magnum area, cervical cord area, and maxillary retrusion (SNA angle). RESULTS Nineteen out of 27 children with achondroplasia exhibited different degrees of obstructive respiratory impairment (n.4 mild, n.8 moderate, n.7 severe), while 8 children did not show OSA. Each group was compared with age-matched controls without neuroimaging abnormalities. Both groups showed reduced nasopharynx volume, JF areas, and SNA angle, while group 1 showed also reduced oropharynx volume, ratio of FM/cervical cord areas, and HF areas (p < 0.05). A positive correlation between nasopharynx volume and SNA angle was found in both groups, while a positive correlation among upper airways volume, JF and HF areas was found only in group 1. No correlation between upper airways volume and OSA severity was found. CONCLUSION In children with achondroplasia, multifaced craniofacial abnormalities contribute to airways volume reduction predisposing to sleep disordered breathing. MRI-based quantitative assessment allows the appraisal of craniofacial variables linked to the development of sleep-disordered breathing such as FM stenosis, jugular and hypoglossal foramina stenosis, and retruded maxillary position and may be a valuable tool for clinical surveillance.
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Affiliation(s)
- Rosalinda Calandrelli
- Institute of Radiology, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy
| | - Fabio Pilato
- Unit of Neurology, Department of Medicine, Neurophysiology, Campus Bio-Medico University, Rome, Neurobiology, Italy.
| | - Gabriella D'Apolito
- Institute of Radiology, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy
| | - Lorenzo Tenore
- Institute of Radiology, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy
| | - Roberta Onesimo
- Rare Diseases Unit, Fondazione Policlinico Universitario Agostino Gemelli-IRCCS, Rome, Italy.,Pediatric Unit, Fondazione Policlinico Universitario Agostino Gemelli-IRCCS, Rome, Italy
| | - Chiara Leoni
- Rare Diseases Unit, Fondazione Policlinico Universitario Agostino Gemelli-IRCCS, Rome, Italy.,Pediatric Unit, Fondazione Policlinico Universitario Agostino Gemelli-IRCCS, Rome, Italy
| | - Giuseppe Zampino
- Rare Diseases Unit, Fondazione Policlinico Universitario Agostino Gemelli-IRCCS, Rome, Italy.,Pediatric Unit, Fondazione Policlinico Universitario Agostino Gemelli-IRCCS, Rome, Italy.,Catholic University of Sacred Heart, Rome, Italy
| | - Cesare Colosimo
- Institute of Radiology, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Rome, Italy.,Catholic University of Sacred Heart, Rome, Italy
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