Congenital myotonic dystrophy type I in a very premature neonate: ethical concerns

Archives de pédiatrie : organe officiel de la Sociéte française de pédiatrie
K Van Den HendeG Cambonie

Abstract

The congenital form of myotonic dystrophy type I (CDM1) corresponds to a>1500 expansion of an unstable trinucleotide (CTG) repeat. Two prognostic factors predict the risk of death in early infancy: maturity of less than 35 weeks of gestation and neonatal invasive ventilation for more than 30 days. The case of a 29-week-old premature female infant, conceived by in vitro fertilization, is reported. Generalized hypotonia led to the diagnosis of the disease. Ethical concertation about withdrawal or maintenance of intensive care was engaged, taking into account the prolonged ventilation, the degree of prematurity, and the parental wishes for maximum care. The infant was extubated after 2 months. At 17 months, motor development and precursors of language were delayed, and difficulties in feeding had required a gastrostomy. Technical advances in neonatal intensive care now allow CDM1 children to survive prolonged ventilation. The signification of such ventilatory needs on patient outcome, particularly for motor handicaps, speech and language delay, and mental deficiency, remains uncertain. The potential impact of in vitro fertilization on disease expression may also be considered. CDM1 is a severe condition, but variability in clinica...Continue Reading

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