Concealed conduction is not seen directly on the surface electrocardiogram but is evident from its effect on subsequent impulses; it includes concealed incomplete penetration of the atrioventricular (AV) junction during… Click to show full abstract
Concealed conduction is not seen directly on the surface electrocardiogram but is evident from its effect on subsequent impulses; it includes concealed incomplete penetration of the atrioventricular (AV) junction during atrial fibrillation (AF) and contributes mechanistically to so-called “slow AF.”1 Manifestations of concealed conduction are numerous. We present a case that demonstrates a common consequence: unexpected failure of propagation of an impulse from atrium to ventricle.2
               
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