1. Ventriculoatrial Block and His-His Changes During Supraventricular Tachycardia Diagnostic and Mechanistic Implications
- Author
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Wong, Christopher X, Higuchi, Satoshi, Nagashima, Koichi, Kaneko, Yoshiaki, Gerstenfeld, Edward P, and Scheinman, Melvin M
- Subjects
Heart Disease ,Cardiovascular ,AH ,atrio-His ,AV ,atrioventricular ,AVNRT ,AVNRT ,atrioventricular nodal re-entrant tachycardia ,HA ,His-atrial ,HH ,His-His ,HV ,His-ventricular ,His ,LBBB ,left bundle branch block ,NF ,nodofascicular ,NV ,nodoventricular ,ORT ,orthodromic re-entry ,RBBB ,right bundle branch block ,SVT ,supraventricular tachycardia ,VA ,ventriculoatrial ,nodoventricular or nodofascicular ,supraventricular tachycardia ,ventriculoatrial block - Abstract
Supraventricular tachycardia (SVT) with ventriculoatrial (VA) block can represent a diagnostic challenge. We present a case of SVT where His-His interval shortening was repeatedly observed during episodes of VA block. This novel observation is more diagnostically suggestive of atrioventricular nodal re-entrant tachycardia, as opposed to orthodromic re-entry using a nodofascicular or nodoventricular pathway where a constant His-His is recorded during episodes of VA block. (Level of Difficulty: Intermediate.).
- Published
- 2023