Continuous, on-line, real-time spectral analysis of systemic arterial pressure signals

T. B.J. Kuo, S. H.H. Chan

研究成果: 雜誌貢獻文章同行評審

123 引文 斯高帕斯(Scopus)

摘要

We present in this communication an algorithm that offers continuous, on- line, real-time analysis of the power spectrum (CORAPS) of systemic arterial pressure (SAP) signals. Based on direct fast Fourier transform of raw SAP signals into power spectral density, it is suitable for the delineation of acute SAP spectral changes over time after physiological or pharmacological perturbations. Thus it is an improvement over most current methods, which only generate the spectra off-line or from intermittent data. Furthermore, all executions can be accomplished economically with a general-purpose personal computer. We demonstrated and quantified vivid sequential alterations in the low-frequency components (<3 Hz) of the SAP spectrum, which purportedly reflect the influence of vasomotor, baroreceptor, and respiratory activity on SAP during pentobarbital administration or transient hypertension. Three window options incorporated into the algorithm further improved the frequency or temporal resolution and discrimination of the spectral changes during abrupt hypertension or hypotension. Thus our CORAPS algorithm may be useful as an on-line monitor for acute hemodynamic changes.
原文英語
期刊American Journal of Physiology - Heart and Circulatory Physiology
264
發行號6 33-6
出版狀態已發佈 - 1993
對外發佈

ASJC Scopus subject areas

  • 生理學
  • 心臟病學與心血管醫學
  • 生理學(醫學)

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