J Clin Monit Comput - Heart rate variability indices for very short-term (30 beat) analysis. Part 1: survey and toolbox.

Tópicos

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Resumo

Heart rate variability (HRV) analysis over very short (<60?s) periods may be useful for monitoring dynamic changes in autonomic nervous system activity where steady-state conditions are not maintained (e.g. during drug administration, or the start or end of exercise). From the 1980s there has been a wealth of HRV indices produced in the quest for better measures of the change in parasympathetic and sympathetic activity. Many of the indices have been sparingly used and have not been investigated for application to short-term use. This study surveyed published methods of HRV analysis searching for indices that could be applied to very short time HRV analysis. The survey included measures of time domain, frequency domain, respiratory sinus arrhythmia, Poincar? plot, and heart rate characteristics. Indices were tested with short segments of archived data to remove those that produced invalid results, or were mathematically equivalent to, but less well known than other indices. The survey identified a comprehensive list of 115 indices that were subsequently coded and screened. Of these, 70 were unique and produced a finite number with 60?s data, so are included in the Toolbox. These indices require validation against physiological data before they can be applied to short-term HRV analysis of cardiac autonomic nervous system activity.

Resumo Limpo

heart rate variabl hrv analysi short s period may use monitor dynam chang autonom nervous system activ steadyst condit maintain eg drug administr start end exercis s wealth hrv indic produc quest better measur chang parasympathet sympathet activ mani indic spare use investig applic shortterm use studi survey publish method hrv analysi search indic appli short time hrv analysi survey includ measur time domain frequenc domain respiratori sinus arrhythmia poincar plot heart rate characterist indic test short segment archiv data remov produc invalid result mathemat equival less well known indic survey identifi comprehens list indic subsequ code screen uniqu produc finit number s data includ toolbox indic requir valid physiolog data can appli shortterm hrv analysi cardiac autonom nervous system activ

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