Key result
Signal-averaged bipolar chest ECGs successfully extract surface His-bundle activity in 30% of cases.
Why the study?
The feasibility of detecting His-bundle activity non-invasively from the body surface using signal averaging was uncertain.
Can His-bundle activity be detected from the body surface using signal averaging of bipolar chest lead electrocardiograms?
Observational (n=10)
Can His-bundle activity be detected from the body surface using signal averaging of bipolar chest lead electrocardiograms?
Signal averaging of bipolar chest lead electrocardiograms can non-invasively detect His-bundle activity in a minority of patients, demonstrating feasibility.
Noninvasive His recording succeeds rarely; leaves open feasibility for clinical use pending technical advances and validation.
Electrocardiograms were recorded from human patients using a bipolar chest lead together with simultaneous His-bundle electrograms. These were then subjected to the technique of signal averaging in an attempt to extract His-bundle activity from the surface record. This was successful in three out of 10 cases subjected to the truly non-invasive surface technique. Methods are discussed by which the technique could be improved.
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Furness et al. (1975) reported an observational. Signal averaging of bipolar chest lead electrocardiograms was evaluated on Extraction of His-bundle activity from the surface record. Signal averaging of bipolar chest lead electrocardiograms successfully extracted His-bundle activity from the surface record in 30% (3 of 10) of cases.
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