Published in
2013 35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC)
DOI: 10.1109/embc.2013.6610392
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- Institute of Electrical and Electronics Engineers
- [www.hal.inserm.fr] | PDF
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- [europepmc.org] | PDF
- [www.researchgate.net] | PDF
- [www.ncbi.nlm.nih.gov] | PDF
- [www.ncbi.nlm.nih.gov] | PDF
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A model-based approach for the evaluation of vagal and sympathetic activities in a newborn lamb
,
Virginie Le Rolle,
David Ojeda,
Alain Beuchée,
Jean-Paul Praud,
Patrick Pladys,
Alfredo I. Hernández
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Abstract
This paper proposes a baroreflex model and a recursive identification method to estimate the time-varying vagal and sympathetic contributions to heart rate variability during autonomic maneuvers. The baroreflex model includes baroreceptors, cardiovascular control center, parasympathetic and sympathetic pathways. The gains of the global afferent sympathetic and vagal pathways are identified recursively. The method has been validated on data from newborn lambs, which have been acquired during the application of an autonomic maneuver, without medication and under beta-blockers. Results show a close match between experimental and simulated signals under both conditions. The vagal and sympathetic contributions have been simulated and, as expected, it is possible to observe different baroreflex responses under beta-blockers compared to baseline conditions.