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Better quantification of neonatal respiratory sinus arrhythmia—progress by modelling and model-related physiological examinations

  • Computing and Data Processing
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Abstract

A large interindividual variability of parameters quantifying respiratory sinus arrhythmia were found in a well defined group of healthy neonates during constant conditions of examination. Reasons for this can be found by means of a mathematical model which is based on physiological data. The results indicate sharp inconsistencies in the transfer function between respiratory movements and resulting respiratory sinus arrhythmia and are dependent on a relative frequency unit fN (ratio of mean respiration rate to mean heart rate). The values of the coherence (as a function of this relative frequency unit) between respiratory movements and heart rate are also distinguished by a systematic decrease from lower to higher fN values (fN=0·1–0·5) and inconsistencies in modelling as well as in physiological examinations. The reasons for both effects can be demonstrated. The study is the basis of a new qualitative step of quantification of respiratory sinus arrhythmia in neonates by power spectral and coherence analyses.

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Authors and Affiliations

  1. Institute of Pathological Physiology, Friedrich Schiller University, Löbderstraße 3, GDR-6900, Jena, German Democratic Republic

    H. Witte & M. Rother

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  1. H. Witte
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  2. M. Rother
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Witte, H., Rother, M. Better quantification of neonatal respiratory sinus arrhythmia—progress by modelling and model-related physiological examinations. Med. Biol. Eng. Comput. 27, 298–306 (1989). https://doi.org/10.1007/BF02441489

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  • DOI: https://doi.org/10.1007/BF02441489

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