Noninvasive real time observation of His bundle activity

Author

Benko, George M.

fYear

1997

fDate

21-22 May 1997

Firstpage

81

Lastpage

82

Abstract

While seeking a particular lead combination that would demonstrate the His bundle impulse noninvasively, an esophageal lead system was found that shows a clear cut positive going ramp in the final 40 msec of the P-R segment. Using a dual beam oscilloscope in a totally shielded true hi-fi system, tracings showed this ramp occurs immediately before the QRS of chest leads. With its timing, polarity and electrode placement it appears that it can only arise from His bundle (nodobundle) activity. Tracings are presented which show how electromagnetic interference obscures this and other P-R interval signals illustrating the need for true hi-fi conditions in ECG research

Keywords

electrocardiography; electromagnetic interference; real-time systems; ECG research; His bundle activity; P-R interval signals; P-R segment; QRS; chest leads; dual beam oscilloscope; electrode placement; electromagnetic interference; esophageal lead system; lead combination; noninvasive real time observation; polarity; positive going ramp; timing; totally shielded true hi-fi system; Batteries; Electrocardiography; Electrodes; Electromagnetic interference; Esophagus; Life members; MONOS devices; Muscles; Oscilloscopes; Timing;

fLanguage

English

Publisher

ieee

Conference_Titel

Bioengineering Conference, 1997., Proceedings of the IEEE 1997 23rd Northeast

Conference_Location

Durham, NH

Print_ISBN

0-7803-3848-0

Type

conf

DOI

10.1109/NEBC.1997.594967

Filename

594967