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Neonatal respiratory depression and delay in diagnosis in Prader-Willi syndrome
1Birth Defects Service, Children's Hospital, Harvard Medical School.
Insights
Early diagnosis of Prader-Willi syndrome is crucial. Many infants are misdiagnosed with conditions like cerebral palsy, delaying proper treatment and attributing neonatal issues to birth complications rather than the underlying genetic disorder.
Area of Science:
- Genetics
- Neonatal Medicine
- Pediatric Neurology
Background:
- Prader-Willi syndrome (PWS) is a complex genetic disorder with variable clinical manifestations.
- Delayed diagnosis of PWS can lead to misattribution of neonatal issues to birth-related events.
- Early identification is critical for appropriate management and to prevent secondary complications.
Purpose of the Study:
- To evaluate the accuracy of diagnoses made at four months of age in infants with known Prader-Willi syndrome.
- To identify common misdiagnoses and associated perinatal factors in this cohort.
- To highlight the impact of delayed PWS diagnosis on perceived causality of neonatal problems.
Main Methods:
- Retrospective chart review of 48 individuals with confirmed Prader-Willi syndrome.
- Analysis of diagnostic accuracy at four months of age.
- Comparison of observed perinatal features with expected rates.
Main Results:
- Only 2 out of 48 infants (4%) were correctly diagnosed with Prader-Willi syndrome by four months.
- 15 infants (31%) were misdiagnosed with cerebral palsy.
- 23% experienced birth asphyxia, significantly higher than the expected 1%.
Conclusions:
- There is a significant delay and inaccuracy in diagnosing Prader-Willi syndrome in early infancy.
- Misdiagnosis often leads to attributing neonatal problems to birth asphyxia or other perinatal events.
- Timely diagnosis of PWS is essential to correctly identify the cause of neonatal issues and guide appropriate interventions.
Abstract:
The authors retrospectively evaluated the diagnoses at four months of age for 48 individuals with known Prader-Willi syndrome. 15 had been diagnosed as having cerebral palsy, and at four months only two of the 48 had been correctly diagnosed as Prader-Willi syndrome. 11 (23 per cent) had had birth asphyxia, compared with an expected rate of 1 per cent. Other perinatal features which occurred more frequently than expected included breech presentation, decreased fetal movements and prolonged gestation. Failure to make an early diagnosis of Prader-Willi syndrome often results in later disability being blamed on the birth process, when instead the child's neonatal problems are secondary to a prenatal condition.
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