Journal of Postgraduate Medicine
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Year : 1990  |  Volume : 36  |  Issue : 2  |  Page : 71-9

Physiological correlates of impedance plethysmographic waveform.


Dept. of Physiology, Seth G. S. Medical College, Bombay, Maharashtra.

Correspondence Address:
J B Dharani
Dept. of Physiology, Seth G. S. Medical College, Bombay, Maharashtra.

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Source of Support: None, Conflict of Interest: None


PMID: 0002097371

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A review of investigations into the origin of impedance plethysmographic waveform is presented in this article. Attempts made by several investigators in the comparison of impedance plethysmographic estimations of peripheral blood flow with that obtained by standard methods are briefly described. Investigations indicating the negligible contribution from contact impedance at body electrode interface are highlighted. Temporal correlation of impedance plethysmographic waveform recorded from thorax with various important events of the cardiac cycle is summarised and various hypotheses on the genesis of this waveform are presented.






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Online since 12th February '04
2004 - Journal of Postgraduate Medicine
Official Publication of the Staff Society of the Seth GS Medical College and KEM Hospital, Mumbai, India
Published by Wolters Kluwer - Medknow