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An early marker for neurological deficits after perinatal brain lesions
H F Prechtl1, C Einspieler, G Cioni
1Department of Physiology, Karl-Franzens-University, Graz, Austria.
Insights
Assessing fidgety movements in infants can predict neurological deficits. Normal movements indicate healthy development, while absent or abnormal movements strongly suggest later neurological issues, enabling early intervention.
Area of Science:
- Pediatric Neurology
- Developmental Pediatrics
- Movement Analysis
Background:
- Fidgety movements typically emerge in infants between 6 and 20 weeks of age.
- Early identification of neurological deficits is crucial for timely intervention.
- Spontaneous motor activity assessment offers a potential tool for early detection.
Purpose of the Study:
- To evaluate the predictive accuracy of absent or abnormal fidgety movements for later neurological deficits in infants.
- To compare the efficacy of fidgety movement assessment with ultrasound brain imaging for predicting neurological outcomes.
Main Methods:
- A collaborative study involving 130 infants across five hospitals.
- Longitudinal assessment of fidgety movements and neurological development up to 2 years corrected age.
- Infants were videoed weekly and underwent repeated neurological examinations; risk stratification used ultrasound scans.
Main Results:
- Infants with normal fidgety movements showed a 96% rate of normal neurological outcomes.
- Abnormal or absent fidgety movements predicted neurological abnormalities in 95% of infants, including cerebral palsy and developmental issues.
- Fidgety movement assessment demonstrated higher sensitivity (95%) and specificity (96%) than ultrasound (80% and 83%, respectively).
Conclusions:
- The assessment of spontaneous motor activity, specifically fidgety movements, is a reliable method for identifying infants at risk of neurological abnormalities.
- This technique allows for early distinction between infants needing intervention and those with typical development.
- The method is simple, non-intrusive, quick, and suitable for very young infants.
Background:
In normal awake infants, fidgety movements are seen from the age of 6 weeks to 20 weeks. The aim of the study was to test the predictive value of absent or abnormal spontaneous movements in young infants for the later development of neurological deficits.
Methods:
In a collaborative study involving five hospitals we collected data on the normal and abnormal quality of fidgety movements of 130 infants and compared it with assessments of neurological development done longitudinally until the age of 2 years. On the basis of ultrasound scans infants were classified as at low-risk or at high-risk of neurological deficits. Infants were videoed for 1 h every week from birth to discharge and then for 15 min every 3 to 4 weeks; quality of general movements was assessed. Repeated neurological assessments were also done until 24 months of corrected age.
Findings:
67 (96%) of 70 infants with normal fidgety movements had a normal neurological outcome. Abnormal quality or total absence of fidgety movements was followed by neurological abnormalities in 57 (95%) of the 60 infants (49 had cerebral palsy and eight had developmental retardation or minor neurological signs). Specificity and sensitivity of fidgety movement assessment were higher (96% and 95%, respectively) than of ultrasound imaging of the infants' brain (83% and 80%, respectively).
Interpretation:
Our technique of assessing spontaneous motor activity can identify and distinguish between those infants who require early intervention for neurological abnormalities and those who do not. Our technique is simple, non-intrusive, reliable, quick, and can be done on very young infants.