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Cramped synchronized general movements in preterm infants as an early marker for cerebral palsy
Fabrizio Ferrari1, Giovanni Cioni, Christa Einspieler
1Institute of Paediatrics and Neonatal Medicine, University of Modena, Policlinico Universitario, 41100 Modena, Italy. ferrarif@unimo.it
Insights
Consistent cramped synchronized general movements (GMs) in preterm infants reliably predict cerebral palsy and its severity. Early detection of these specific GM abnormalities indicates a worse neurological outcome.
Area of Science:
- Neonatal neurology
- Developmental pediatrics
- Movement disorders
Background:
- Preterm infants with brain lesions are at high risk for cerebral palsy.
- Early detection of neurological impairments is crucial for timely intervention.
- General movements (GMs) are a sensitive indicator of early brain dysfunction.
Purpose of the Study:
- To determine if specific GM abnormalities, particularly cramped synchronized GMs, can predict cerebral palsy.
- To assess the ability of GM abnormalities to predict the severity of motor impairment in preterm infants.
- To compare the predictive value of GMs with traditional neurological examination and brain ultrasound findings.
Main Methods:
- Serial videotaping and blind observation of GMs in 84 preterm infants with brain lesions.
- Assessment of GMs from birth to 56-60 weeks' postmenstrual age.
- Comparison of GM abnormality development with ultrasound findings and neurological exams, correlating with 2-3 year outcomes.
Main Results:
- Consistent or predominant cramped synchronized GMs predicted cerebral palsy (33 cases).
- Earlier onset of cramped synchronized GMs correlated with worse neurological outcomes.
- Transient cramped synchronized GMs led to mild CP or normal development.
- Normal or poor repertoire GMs resulted in normal outcomes (84%) or mild CP (16%).
- GM observation showed 100% sensitivity and 92.5-100% specificity for cramped synchronized GMs, outperforming neurological exams.
Conclusions:
- Consistent and predominant cramped synchronized GMs are specific predictors of cerebral palsy in preterm infants.
- The earlier the appearance of cramped synchronized GMs, the more severe the subsequent motor impairment.
- GM assessment offers a highly sensitive and specific method for early detection of neurological deficits.
Objective:
To ascertain whether specific abnormalities (ie, cramped synchronized general movements [GMs]) can predict cerebral palsy and the severity of later motor impairment in preterm infants affected by brain lesions.
Design:
Traditional neurological examination was performed, and GMs were serially videotaped and blindly observed for 84 preterm infants with ultrasound abnormalities from birth until 56 to 60 weeks' postmenstrual age. The developmental course of GM abnormalities was compared with brain ultrasound findings alone and with findings from neurological examination, in relation to the patient's outcome at age 2 to 3 years.
Results:
Infants with consistent or predominant (33 cases) cramped synchronized GMs developed cerebral palsy. The earlier cramped synchronized GMs were observed, the worse was the neurological outcome. Transient cramped synchronized character GMs (8 cases) were followed by mild cerebral palsy (fidgety movements were absent) or normal development (fidgety movements were present). Consistently normal GMs (13 cases) and poor repertoire GMs (30 cases) either lead to normal outcomes (84%) or cerebral palsy with mild motor impairment (16%). Observation of GMs was 100% sensitive, and the specificity of the cramped synchronized GMs was 92.5% to 100% throughout the age range, which is much higher than the specificity of neurological examination.
Conclusions:
Consistent and predominant cramped synchronized GMs specifically predict cerebral palsy. The earlier this characteristic appears, the worse is the later impairment.