Sudden unexpected improvement in the atrioventricular conduction. What is the mechanism?

Sudden unexpected improvement in the atrioventricular conduction. What is the mechanism?

The 12-lead electrocardiogram (ECG) of a 79-year-old male patient with recurrent pre-syncope showed irregular sinus rhythm with constant PR interval and left bundle branch block (LBBB) with intermittently blocked P waves. The beat following the blocked P wave had a narrower QRS with a shorter PR int...

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Veröffentlicht in:Indian pacing and electrophysiology journal 2021-07, Vol.21 (4), p.248-250
Hauptverfasser: Gupta, Anunay, Bhargava, Kartikeya, Bhasin, Dinkar, Agstam, Sourabh, Isser, Hermohander Singh
Format: Artikel
Sprache:eng
Schlagworte:
Bilateral bundle branch block
Case Report
Electrocardiogram
Ladder diagram
LBBB
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Zusammenfassung:The 12-lead electrocardiogram (ECG) of a 79-year-old male patient with recurrent pre-syncope showed irregular sinus rhythm with constant PR interval and left bundle branch block (LBBB) with intermittently blocked P waves. The beat following the blocked P wave had a narrower QRS with a shorter PR interval. The phenomenon of bilateral bundle branch block explains the sudden improvement in the atrioventricular conduction.
ISSN:0972-6292
0972-6292
DOI:10.1016/j.ipej.2021.05.001