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[External recording of His bundle electrical activity (author's transl)]
Giornale Italiano Di Cardiologia
|January 1, 1977
Summary
This study introduces a noninvasive method to record His potentials using chest leads and signal averaging. The reproducible
Area of Science:
- Electrophysiology
- Cardiology
Context:
- Intracardiac recording of His bundle potentials is invasive.
- Accurate assessment of His bundle electrical activity is crucial for diagnosing cardiac conduction abnormalities.
Purpose:
- To describe a novel noninvasive method for recording His potentials.
- To validate the accuracy and reproducibility of this noninvasive technique.
Summary:
- A noninvasive technique using a bipolar chest lead, signal filtering (70-300 Hz), amplification (X 100,000), and a multichannel analyzer with signal averaging was developed.
- The system utilizes ECG-triggered averaging with a QRS detector for temporal stability, achieving +/- 1 msec accuracy.
- External recordings demonstrated reproducible 'G waves,' correlating with the His bundle's electrical activity, and allowed for accurate His-ventricular (HV) interval measurement.
Impact:
- Provides a less invasive alternative to intracardiac recordings for evaluating His bundle function.
- Enhances diagnostic capabilities for arrhythmias and conduction disorders.
- Facilitates more accessible and frequent monitoring of cardiac electrical activity.