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Diagnostic categories in infants referred for an acute event suggesting near-miss SIDS
1Pediatric Sleep Unit, Free University of Brussels, Childrens' Hospital, Belgium.
Insights
A significant number of infants experiencing life-threatening apnea have underlying conditions. Home monitoring is recommended for severe, unexplained episodes, regardless of sleep study results, in near-miss sudden infant death syndrome (SIDS) cases.
Area of Science:
- Pediatrics
- Neonatology
- Sleep Medicine
Background:
- Life-threatening apnoeic events in infants are concerning, often mimicking near-miss sudden infant death syndrome (SIDS).
- Identifying underlying pathologies is crucial for appropriate management and risk assessment.
Purpose of the Study:
- To investigate the diagnostic yield of polysomnography and identify causes of life-threatening apnoeic events in infants.
- To determine criteria for recommending home monitoring in infants presenting with near-miss SIDS events.
Main Methods:
- Retrospective analysis of 857 infants admitted for life-threatening apnoeic events between 1977 and 1984.
- Clinical evaluation, polysomnography, and sleep studies were utilized to identify pathologic conditions.
- Categorization of diagnoses and assessment of episode severity based on parental reports.
Main Results:
- A definite pathologic condition was identified in 66% of infants; polysomnography was abnormal in 6.5% of these.
- Digestive issues were the most frequent diagnosis (263 infants), followed by vasovagal (95) and neurological (78) causes.
- Home monitoring was recommended for 17% of all infants, including all with abnormal polysomnograms and those with unexplained severe episodes.
Conclusions:
- A wide range of diagnoses can be identified in infants with near-miss SIDS events.
- Home monitoring is strongly indicated for infants experiencing severe, unexplained apnoeic episodes, irrespective of sleep study findings.
Abstract:
Among 857 infants admitted between 1977 and 1984 for a life-threatening apnoeic event a definite pathologic condition was found in 576 (66%). In 32 (6.5%) of the latter the polysomnogram was abnormal. The major clinical diagnostic categories were, with decreasing frequency: digestive (n = 263), vasovagal (n = 95), neurological (n = 78), respiratory obstructions (n = 33), and respiratory infections (n = 27); miscellaneous causes were found in 80 infants. No obvious cause could be traced in the remaining 281 infants. According to those caring for them the episode was severe in 77 (27%) of these infants, 57 (74%) of which had an abnormal polysomnogram, and minor in 204 (73%), 36 (18%) of which had an abnormal sleep study. Home monitoring was performed for 145 patients: all those with an abnormal polysomnogram and the 20 infants with an unexplained severe episode associated with a normal sleep study. We conclude from our experience that when an infant is referred for an acute event suggesting near-miss sudden infant death syndrome (SIDS), a large array of diagnoses can be found and that an electric monitoring device will ultimately be advocated for only 17% of all infants presented, but for all those with an unexplained severe episode, irrespective of the results of the sleep study.
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