Key result
Signal-averaged body-surface ECG successfully records noninvasive His bundle activity in ~77% of patients.
Why the study?
Noninvasive recording of His bundle activity for diagnosing atrioventricular block and atrial fibrillation was explored to provide a safe and useful diagnostic method.
Does noninvasive recording of His bundle activity using signal averaging allow detection of G potentials in patients with AV block or atrial fibrillation?
Comparison
Noninvasive His bundle recording vs routine invasive His bundle electrogram
Design
Observational case series
Authors
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Noninvasive His recording may be feasible in AV block; leaves open standardization and clinical utility pending validation.
Observational (n=26)
No
Does noninvasive recording of His bundle activity using signal averaging allow detection of G potentials in patients with AV block or atrial fibrillation?
Noninvasive recording of His bundle electrograms using signal averaging is a feasible and safe method for determining the site of block in AV conduction disturbances, though limited in second or third degree H-V block.
YOSHIMICHI HOJO (1979) conducted an observational in Atrioventricular block and atrial fibrillation (n=26). Noninvasive His bundle electrogram using signal averaging vs. Routine invasive His bundle electrogram was evaluated on Successful recording of His bundle activity (G potential). Noninvasive His bundle activity was successfully recorded from the body surface using signal averaging in 20 of 26 patients with atrioventricular block or atrial fibrillation.