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Heart period and variability findings in preschool children with posttraumatic stress symptoms
Michael S Scheeringa1, Charles H Zeanah, Leann Myers
1Department of Psychiatry and Neurobiology, Institute of Infant and Early Childhood Development Mental Health, Tulane University School of Medicine, New Orleans, Louisiana, USA.
Insights
Young children experiencing trauma show altered heart rate regulation. Parental discipline significantly impacts this autonomic response in children with posttraumatic stress disorder (PTSD).
Area of Science:
- Developmental Psychology
- Pediatric Psychophysiology
- Trauma Studies
Background:
- Early childhood trauma can lead to significant neurodevelopmental alterations.
- Understanding autonomic control of heart rate in traumatized children is crucial.
Purpose of the Study:
- To investigate the autonomic control of heart rate in young children exposed to trauma.
- To explore the relationship between trauma, psychopathology, and parent-child dynamics.
Main Methods:
- Assessed 62 traumatized children and 62 controls (aged 20 months to 6 years).
- Measured posttraumatic stress disorder (PTSD) symptoms, heart rate variability (interbeat interval, RSA), and parent-child relationship quality.
- Included assessment of family rehearsal of trauma.
Main Results:
- Traumatized children, with or without PTSD, exhibited reduced heart period during trauma stimuli compared to controls.
- No main effect of respiratory sinus arrhythmia (RSA) change scores was found.
- A significant interaction revealed decreased RSA in children with PTSD and less positive parental discipline during trauma rehearsal.
Conclusions:
- Psychopathology in young children requires assessment within the context of psychophysiology and parent-child relationships.
- Optimal understanding of maladaptation mechanisms necessitates considering these integrated factors.
- Parental influence plays a key role in the psychophysiological responses of traumatized children.
Background:
Traumatic experiences for young children might result in profound neurodevelopmental changes, compared with adults. Our aim was to examine autonomic control of heart rate in traumatized young children.
Methods:
Sixty-two children who had suffered traumas and 62 nontraumatized control children, aged 20 months to 6 years, were assessed for posttraumatic stress disorder (PTSD) symptoms, interbeat interval, respiratory sinus arrhythmia (RSA), family rehearsal of the trauma, and parent-child relationship quality.
Results:
Traumatized children with PTSD and traumatized children without PTSD both had decreased heart period in response to a trauma stimulus relative to the nontraumatized group (both p < .0167). there was no main effect for RSA change scores, however, there was a significant interaction effect between parental positive discipline with PTSD symptoms and RSA. The most sympathetic children had decreased RSA during the trauma stimulus when they had caregivers with less positive discipline during a clean-up nd family rehearsal with PTSD symptoms.
Conclusions:
These findings underscore that psychopathology in young children ought to be assessed in the context of psychophysiology and parent-child relationship to optimally understand the mechanisms of maladaptation during this complex developmental period.
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