Spectral analysis of blood pressure and heart rate in conscious rats: effects of autonomic blockers.

@article{Japundi1990SpectralAO,
  title={Spectral analysis of blood pressure and heart rate in conscious rats: effects of autonomic blockers.},
  author={Nina Japund{\vz}i{\'c} and M. L. Grichois and Philippe Zitoun and Dominique Laude and Jean-Luc Elghozi},
  journal={Journal of the autonomic nervous system},
  year={1990},
  volume={30 2},
  pages={91-100}
}
We investigated the fluctuations which underly the spontaneous variability of blood pressure and heart rate in conscious rats. Intrafemoral blood pressure was computed to generate evenly spaced signals (systolic, diastolic, mean blood pressure, heart rate) at 200 ms intervals. This equidistant sampling allowed a direct spectral analysis using a Fast Fourier Transform algorithm. Systolic blood pressure and heart rate exhibited low-frequency oscillations (Mayer waves, 20-605 mHz) and a high… CONTINUE READING
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