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The influence of pretreatment respiratory sinus arrhythmia dimensions on trauma-focused cognitive behavioral therapy
Michelle P Brown1, Chad E Shenk2,3, Brian Allen1,2
1Center for the Protection of Children, The Pennsylvania State University Milton S. Hershey Medical Center, Hershey, Pennsylvania, USA.
Insights
Children with higher resting respiratory sinus arrhythmia (RSA) showed fewer posttraumatic stress disorder (PTSD) symptoms after treatment. This suggests RSA may guide support for maltreated youth receiving trauma-focused cognitive behavioral therapy (TF-CBT).
Area of Science:
- Psychology
- Psychophysiology
- Child Development
Background:
- Child maltreatment is linked to emotion dysregulation, indicated by respiratory sinus arrhythmia (RSA) changes.
- RSA dysregulation predicts higher posttraumatic stress disorder (PTSD) symptoms and may influence trauma-focused cognitive behavioral therapy (TF-CBT) effectiveness.
- Animal-assisted therapy (AAT) is explored as an adjunct to TF-CBT for improving emotion regulation in maltreated youth.
Purpose of the Study:
- To examine the association between resting RSA, RSA reactivity, and RSA recovery in children exposed to maltreatment.
- To determine if pretreatment RSA predicts PTSD symptom severity before and after TF-CBT, with or without AAT.
- To explore RSA as a potential biomarker for treatment response in pediatric PTSD.
Main Methods:
- A randomized controlled feasibility trial involving 33 children (mean age 11.79 years) exposed to maltreatment.
- Measurement of resting RSA, RSA reactivity, and RSA recovery during a laboratory stress challenge.
- Analysis using multiple linear regression to assess the relationship between RSA dimensions and PTSD symptoms pre- and post-treatment.
Main Results:
- Higher resting RSA showed a trend towards predicting less severe caregiver-reported posttreatment PTSD symptoms (β = -.52, p = .058).
- Higher RSA during recovery showed a trend towards predicting less severe child-reported posttreatment PTSD symptoms (β = -.70, p = .056).
- These findings, while not statistically significant, suggest potential links between RSA and treatment outcomes.
Conclusions:
- Preliminary findings suggest that RSA regulation may be associated with reduced PTSD symptoms following TF-CBT.
- RSA metrics could potentially identify children who may require additional support to benefit from psychotherapeutic interventions.
- Further research is warranted to validate RSA as a biomarker for treatment response in pediatric PTSD.
Abstract:
Child maltreatment is associated with respiratory sinus arrhythmia (RSA) dysregulation, a physiological indicator of emotion regulation that predicts elevated posttraumatic stress disorder (PTSD) symptoms and may be a mechanism of action for exposure-based therapies, such as trauma-focused cognitive behavioral therapy (TF-CBT). Animal-assisted therapy (AAT) has been proposed as an adjunct to TF-CBT for improving emotion regulation following maltreatment. The current study reports findings from a randomized controlled feasibility trial (N = 33; Mage = 11.79 years, SD = 3.08; 63.6% White; 66.7% female) that measured youths' resting RSA, RSA reactivity, and RSA recovery in response to a pretreatment laboratory challenge. We tested whether (a) lower pretreatment resting RSA was associated with blunted RSA during the challenge; (b) either of the pretreatment RSA dimensions predicted more severe pretreatment PTSD symptoms; and (c) either of the pretreatment RSA dimensions predicted less severe posttreatment PTSD symptoms and, as an exploratory aim, whether this was moderated by treatment group (i.e., TF-CBT vs. TF-CBT + AAT). Results from multiple linear regression indicated that, after controlling for pretreatment symptom severity, there was a large effect size for higher resting RSA predicting less severe caregiver-reported posttreatment PTSD symptoms, β = -.52, p = .058, and higher RSA during recovery predicting less severe child-reported posttreatment PTSD symptoms, β = -.70, p = .056, although these findings were not significant. These preliminary results offer important insights for future studies to investigate how the ability to regulate RSA informs which children need additional support to benefit from psychotherapeutic treatment.
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