Published: 2020-09-21

Complex uninterpretable electrocardiogram and syncope

Sudeb Mukherjee


Electrocardiogram (ECG) is an essential component as diagnostic modalities in cardiovascular diseases. A wide spectrum of diseases can be diagnosed by ECG. Conduction disturbances manifest in ECG with characteristics manner. Sometimes these manifestations are not interpretable with the current concept of cardiovascular physiology. Here I have reported such an interesting ECG which is complex and difficult to interpret.


Electrocardiogram, Atrioventricular conduction disturbances, Left anterior fascicular block, Right bundle branch block, Electrophysiology study

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Einthoven W. Über die Form des menschlichen Electrocardiogramms. Pfügers Archiv. 1895;2:101-23.

TC Chou. Electrocardiography in Clinical Practice, Grune & Stratton. New York. 1979: 93-145.

Dressler W. Transient bundle branch block occurring during slowing of the heart beat and following gagging. Am Heart J. 1959;58:760.

Massumi RA. Bradycardia-dependent bundle branch block. Acritique and proposed criteria. Circulation. 1968;38:1066.

Richman JL, Wolff L. Left bundle branch block masquerading as right bundle branch block. Am Heart J. 1954;47(3):383-93.