More information about text formats
Martínez –Milla el al, report an interesting case of cardiac lymphoma, presenting as complete AV block.
A close look at the electrocardiogram, reveals a P wave with a normal frontal axis, broad (duration > 120 ms), and bimodal ( notched). These are the diagnostic hallmarks of partial interatrial block (IAB).
In this patient, the lymphoma probably infiltrates the Bachmann’s bundle, interrupting the preferential pathway of left atrial activation, causing partial IAB.
Although often overlooked, IAB is frequent in the elderly, and it is associated with atrial arrhythmias and stroke.
Because the diagnosis of IAB relies on the morphology and duration of the P wave, a meticulous analysis of the electrocardiogram is mandatory.