Heart and vessels · 2014
Paradoxical responses to pacing maneuvers differentiating atrioventricular node reentrant tachycardia and junctional tachycardia.
Клинический случайСтатьяНазвание и аннотация: Перевод в очереди
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Tokuda Michifumi, Yamane Teiichi, Matsuo Seiichiro, Tokutake Kenichi, Yokoyama Kenichi, Hioki Mika, Narui Ryohsuke, Tanigawa Shin-Ichi, Yamashita Seigo, Inada Keiichi, Yoshimura Michihiro
Аннотация
A 40-year-old female presented at our hospital because of heart palpitations. During an electrophysiological study, atrioventricular (AV) conduction showed dual AV nodal physiology. Three types of supraventricular tachycardia (SVT) were induced. The initiation of SVT was reproducibility dependent on a critical A-H interval prolongation. An early premature atrial contraction during SVT repeatedly advanced the immediate His potential with termination of the tachycardia, indicating AV node reentrant tachycardia (AVNRT). However, after atrial overdrive pacing during SVT without termination of the tachycardia, the first return electrogram resulted in an AHHA response, consistent with junctional tachycardia. The mechanism of paradoxical responses to pacing maneuvers differentiating AVNRT and junctional tachycardia was discussed.
Предметные рубрики MeSH
Action PotentialsAdultCardiac Pacing, ArtificialCatheter AblationDiagnosis, DifferentialElectrocardiographyElectrophysiologic Techniques, CardiacFemaleHeart Conduction SystemHeart RateHumansPredictive Value of TestsTachycardia, Atrioventricular Nodal ReentryTachycardia, Ectopic JunctionalTreatment Outcome