Pneumographic studies: predictors of future apnoeas but not sudden infant death in asymptomatic infants
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Updated: Oct 23, 2026

Protocol and Guidelines for Point-of-Care Lung Ultrasound in Diagnosing Neonatal Pulmonary Diseases Based on International Expert Consensus
Published on: March 6, 2019
1Royal Alexandra Hospital for Children, Camperdown, New South Wales, Australia.
Insights
Pneumograms can predict future apnea in infants with high accuracy. However, this study found that abnormal pneumograms did not predict sudden infant death syndrome (SIDS) in infants studied.
Area of Science:
- Pediatrics
- Neonatology
- Respiratory Medicine
Background:
- Sudden Infant Death Syndrome (SIDS) remains a significant concern in infant mortality.
- Understanding predictors of cardiorespiratory events in infants is crucial for risk assessment.
- Pneumography is a diagnostic tool used to monitor infant breathing patterns.
Purpose of the Study:
- To evaluate the predictive value of pneumograms in asymptomatic infants at risk for SIDS.
- To assess the correlation between pneumogram findings and the occurrence of future apneic events.
- To determine if pneumograms can predict SIDS itself.
Main Methods:
- Pneumograms were conducted on 401 asymptomatic infants, including siblings/relatives of SIDS victims and infants of anxious parents.
- A subset of 222 infants underwent home monitoring to assess pneumogram predictive capabilities.
- Analysis focused on identifying abnormalities, periodic breathing, and apnea density in relation to outcomes.
Main Results:
- Pneumograms demonstrated high sensitivity (97.5%) and moderate specificity (72%) in predicting future apnea.
- Infants experiencing future apneas showed significantly higher percentages of periodic breathing and apnea density.
- Critically, all eight infants who died of SIDS had normal pneumograms, indicating no predictive value for SIDS.
Conclusions:
- Pneumograms are effective in predicting future apneic events in infants.
- However, pneumograms are not reliable predictors of Sudden Infant Death Syndrome (SIDS).
- Further research is needed to identify reliable SIDS predictors.
Abstract:
Pneumograms were performed on 401 asymptomatic infants: 322 siblings, 15 cousins and 24 twins of sudden infant death syndrome (SIDS) victims; 14 siblings of near-miss SIDS victims, and 26 infants of anxious parents. The infants of anxious parents had significantly fewer abnormalities than siblings of SIDS victims. In 222 infants subsequently monitored at home, the pneumogram as a predictor of future apnoea had a sensitivity rate of 97.5% and a specificity rate of 72% (P less than 0.001). Infants who were to experience future apnoeas had a significantly higher percentage of time in periodic breathing and a higher density of apnoeas in their original pneumograms. However, the abnormal pneumogram did not predict SIDS, because the eight infants who died all had normal pneumograms.
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