Lidija Dimitrijević1, Bojko Bjelaković2, Hristina Čolović1, Aleksandra Mikov3, Vesna Živković1, Mirjana Kocić1, Stevo Lukić4. 1. Clinic of Physical medicine and Rehabilitation- Paediatric department, Clinical Centre, Niš, Serbia; Faculty of Medicine, University of Niš, Serbia. 2. Faculty of Medicine, University of Niš, Serbia; Clinic of Pediatrics, Clinical Centre, Niš, Serbia. 3. Clinic of Paediatric Rehabilitation, Institute for Children and Youth Health Vojvodina, Novi Sad, Serbia; Faculty of Medicine, University of Novi Sad, Serbia. 4. Faculty of Medicine, University of Novi Sad, Serbia; Clinic of Neurology, Clinical Centre, Niš, Serbia. Electronic address: slukic@medfak.ni.ac.rs.
Abstract
BACKGROUND: Adverse neurologic outcome in preterm infants could be associated with abnormal heart rate (HR) characteristics as well as with abnormal general movements (GMs) in the 1st month of life. AIMS: To demonstrate to what extent GMs assessment can predict neurological outcome in preterm infants in our clinical setting; and to assess the clinical usefulness of time-domain indices of heart rate variability (HRV) in improving predictive value of poor repertoire (PR) GMs in writhing period. STUDY DESIGN: Qualitative assessment of GMs at 1 and 3 months corrected age; 24h electrocardiography (ECG) recordings and analyzing HRV at 1 month corrected age. SUBJECTS: Seventy nine premature infants at risk of neurodevelopmental impairments were included prospectively. OUTCOME MEASURES: Neurodevelopmental outcome was assessed at the age of 2 years corrected. Children were classified as having normal neurodevelopmental status, minor neurologic dysfunction (MND), or cerebral palsy (CP). RESULTS: We found that GMs in writhing period (1 month corrected age) predicted CP at 2 years with sensitivity of 100%, and specificity of 72.1%. Our results demonstrated the excellent predictive value of cramped synchronized (CS) GMs, but not of PR pattern. Analyzing separately a group of infants with PR GMs we found significantly lower values of HRV parameters in infants who later developed CP or MND vs. infants with PR GMs who had normal outcome. CONCLUSIONS: The quality of GMs was predictive for neurodevelopmental outcome at 2 years. Prediction of PR GMs was significantly enhanced with analyzing HRV parameters.
BACKGROUND: Adverse neurologic outcome in preterm infants could be associated with abnormal heart rate (HR) characteristics as well as with abnormal general movements (GMs) in the 1st month of life. AIMS: To demonstrate to what extent GMs assessment can predict neurological outcome in preterm infants in our clinical setting; and to assess the clinical usefulness of time-domain indices of heart rate variability (HRV) in improving predictive value of poor repertoire (PR) GMs in writhing period. STUDY DESIGN: Qualitative assessment of GMs at 1 and 3 months corrected age; 24h electrocardiography (ECG) recordings and analyzing HRV at 1 month corrected age. SUBJECTS: Seventy nine premature infants at risk of neurodevelopmental impairments were included prospectively. OUTCOME MEASURES: Neurodevelopmental outcome was assessed at the age of 2 years corrected. Children were classified as having normal neurodevelopmental status, minor neurologic dysfunction (MND), or cerebral palsy (CP). RESULTS: We found that GMs in writhing period (1 month corrected age) predicted CP at 2 years with sensitivity of 100%, and specificity of 72.1%. Our results demonstrated the excellent predictive value of cramped synchronized (CS) GMs, but not of PR pattern. Analyzing separately a group of infants with PR GMs we found significantly lower values of HRV parameters in infants who later developed CP or MND vs. infants with PR GMs who had normal outcome. CONCLUSIONS: The quality of GMs was predictive for neurodevelopmental outcome at 2 years. Prediction of PR GMs was significantly enhanced with analyzing HRV parameters.
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