Narrow QRS complexes within left bundle branche block in a patient with chest pain

Narrow QRS complexes within left bundle branche block in a patient with chest pain

We present the case of a patient with chest pain, palpitations, atrial fibrillation, left bundle branch block (LBBB) and occasional early narrow QRS complexes. An intracardiac study revealed rate-dependent LBBB with additional hidden rate-dependent slowing in the contralateral bundle branch, resulti...

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Veröffentlicht in:Journal of electrocardiology 2020-09, Vol.62, p.36-38
Hauptverfasser: Tomcsányi, János, Somlói, Mikós, Wellens, Hein
Format: Artikel
Sprache:eng
Schlagworte:
Cardiac arrhythmia
Electrocardiography
Heart attacks
Medical imaging
Palpitations
Premature beats
Rate-dependent bundle branch block
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Zusammenfassung:We present the case of a patient with chest pain, palpitations, atrial fibrillation, left bundle branch block (LBBB) and occasional early narrow QRS complexes. An intracardiac study revealed rate-dependent LBBB with additional hidden rate-dependent slowing in the contralateral bundle branch, resulting in normalization of the early conducted QRS complexes.
ISSN:0022-0736
1532-8430
DOI:10.1016/j.jelectrocard.2020.07.019