[SMC] Respiratory insufficiency as a presenting symptom of congenital myasthenic syndromes

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[SMC] Respiratory insufficiency as a presenting symptom of congenital myasthenic syndromes

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Acta Paediatr. 2023 Jan 31. doi: 10.1111/apa.16688. Online ahead of print.

ABSTRACT

AIM: Respiratory insufficiency can be a presenting symptom of congenital myasthenic syndromes (CMS) but is rarely recognized as such. In this study, we aim to raise awareness of CMS to paediatricians.

METHODS: We performed a retrospective case study of infants and preschool children treated in the past five years in Amalia Children's Hospital, Radboud University Medical Center in Nijmegen, the Netherlands for respiratory insufficiency as presenting symptom of CMS.

RESULTS: Five children aged two weeks to five years experienced severe to life threatening episodes of respiratory insufficiency, especially during viral infections, due to respiratory muscle weakness. During infections they often also had progression of their otherwise mild ocular, facial, and limb muscle weakness. They were eventually diagnosed with genetically proven CMS. In these five children, treatment with pyridostigmine, an acetylcholinesterase inhibitor, resulted in clinical improvement.

CONCLUSION: CMS should be considered in every patient with unexplained recurrent respiratory insufficiency, or with an unusually severe course of a normally mild respiratory infection, especially in combination with mild muscle weakness outside periods of illness. Early diagnosis of CMS is crucial for early treatment, which may help avoiding sudden infant death, severe respiratory insufficiency and further deterioration of the muscle strength.

PMID:36718955 | DOI:10.1111/apa.16688


Source: https://pubmed.ncbi.nlm.nih.gov/3671895 ... t6+86293ac
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