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A Technique for Non-Invasive His-Purkinje System (HPS) Recording

  • J. K. Cywinski
  • J. R. Mniece
  • G. J. Ledee
  • J. Ruskin

Abstract

Electrocardiograms were recorded from human volunteers using bipolar chest electrodes and standard leads I, II and III. The chest lead signals were amplified approx. 105 times, filtered and time-averaged over 128 consecutive beats. For signal conditioning and averaging, an analog- and digital microprocessor-based system was employed. The noise reduction resulting from the averaging technique permitted extraction of microvolt-range activity in the P-Q segment of the heart cycle otherwise regarded as silent. The recorded waveforms were triangular, approx. 5 msec in duration and 3-6 microvolts in amplitude. They preceded the ventricular depolarization complexes by 25–45 msec. On some volunteer patients, the externally-recorded waveform was compared with an internal electrogram recorded from an indwelling catheter. The correlation of events corresponding with internally-recorded His bundle activity was promising.

Keywords

Recorded Waveform Microprocessor System Consecutive Beat Bundle Activity Heart Rhythm Disturbance 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

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    Berbari E.J., Scherlag B.J., El-Sherif N., Befeler B., Aranda J.M., Lazzara R. The His-Purkinje electrocardiogram in man: An initial assessment of its uses and limitations. Circulation 54: 219–224 (1976).PubMedGoogle Scholar
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Copyright information

© Martinus Nijhoff Publishers by, The Hague 1978

Authors and Affiliations

  • J. K. Cywinski
    • 1
  • J. R. Mniece
    • 1
  • G. J. Ledee
    • 1
  • J. Ruskin
    • 2
  1. 1.Dept of Medical EngineeringMassachusetts General HospitalBostonUSA
  2. 2.Cardiac UnitMassachusetts General HospitalBostonUSA

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