Related Experiment Video
Updated: Jul 17, 2026
Measuring Cardiac Autonomic Nervous System (ANS) Activity in Children
Published on: April 29, 2013
Noninvasive assessment of cardiovascular autonomic control in pediatric obstructive sleep apnea syndrome
Zheng Lin1, Michael K Khoo, Maida Chen
1Department of Biomedical Engineering, University of Southern California, Los Angeles, CA, USA.
Insights
Pediatric Obstructive Sleep Apnea Syndrome (OSAS) shows autonomic dysfunction with increased sympathetic drive but normal parasympathetic activity. This differs from adult OSAS autonomic effects.
Area of Science:
- Cardiology
- Pediatric Pulmonology
- Autonomic Neuroscience
Background:
- Obstructive Sleep Apnea Syndrome (OSAS) is linked to cardiovascular autonomic dysfunction in adults.
- Autonomic control abnormalities in pediatric OSAS remain under-investigated.
Purpose of the Study:
- To quantify autonomic system dysfunction in children with OSAS.
- To characterize cardiovascular response abnormalities in pediatric OSAS.
Main Methods:
- Continuous ECG, arterial blood pressure, and airflow monitoring during wakefulness.
- Assessment under various physiological and psychological stressors (posture, mental stress, cold face challenge).
- Application of spectral analysis and computational modeling for mechanism delineation.
Main Results:
- Preliminary findings indicate distinct autonomic effects in pediatric OSAS compared to adults.
- Elevated peripheral sympathetic drive was observed.
- Parasympathetic activity appeared relatively preserved.
Conclusions:
- Pediatric OSAS exhibits a unique autonomic profile.
- Further research is needed to understand the long-term cardiovascular implications.
Abstract:
Studies suggest that Obstructive Sleep Apnea Syndrome (OSAS) is causally related to abnormal cardiovascular autonomic control in adults, but this has not been established in pediatric OSAS. The goal of this study was to quantify autonomic system dysfunction, as manifested by cardiovascular response abnormalities, in children with OSAS. During wakefulness, we continuously measured the ECG, arterial blood pressure and airflow in each subject. These measurements were made during the following conditions: spontaneous breathingin the supine posture (baseline), spontaneous breathing in the standing posture (orthostatic stress); tracking of the subject's own prior spontaneous breathing pattern while supine (mental stress), and during a cold face challenge. Using spectral analysis and modeling techniques, we sought to computationally delineate the physiological mechanisms that mediate these abnormalities. Our preliminary results suggest that the autonomic effects of pediatric OSAS differ from those in adult in that parasympathetic activity remains relatively normal despite the elevated peripheral sympathetic drive.
More Related Videos
Related Concept Videos
01:17Assessment of apical pulse
Assessing the apical pulse is a critical nursing procedure, particularly indicated for:
01:25Assessment of apical radial pulse
The A-R pulse assessment involves simultaneous evaluation of the apical and radial pulses. When the apical and radial pulse rates vary, this assessment helps identify a pulse deficit.
Pre-Procedural Preparation
01:19Assessing Blood pressure using a doppler ultrasound
Pre-Procedural Guidelines for Doppler Ultrasound Blood Pressure Assessment:
Preparation of Equipment:
01:23Assessment of blood pressure in brachial artery(two-step method)
01:15Assessment of blood pressure in brachial artery(one-step method)
Prepare for the Procedure:
01:20Assessment of Ventilation I: Respiratory Rate
A Ventilation assessment is critical for monitoring a patient's health status. Respiration, one of the most accessible vital signs, provides insights into the function of numerous body systems and can indicate serious health issues, such as brainstem injuries from head trauma.
Critical Guidelines for Assessing Ventilation: