Bachmann ’s bundle potential during atrial lead placement: a case series

In 1914 Sir Thomas Lewis observed that differences in the speed of atrial impulse propagation are influenced by myofiber orientation.1 Two years later Jean George Bachmann reported that left atrial (LA) activation occurs primarily over a muscular band of longitudinally arranged fibers immediately adjacent to the Crista terminalis (CT), which became known as Bachmann ’s bundle (BB).2 Damage to BB results in interatrial conduction delay (IACD) manifesting as prolonged P-wave duration (PWD)>120 milliseconds (ms) on the surface electrocardiograph (ECG).

Source: Heart Rhythm - November 11, 2021 Category: Cardiology Authors: Margaret Infeld, Nicole Habel, Kramer Wahlberg, Sean Meagher, Markus Meyer, Daniel Lustgarten Source Type: research