Electrical Connections between Persistent Left Superior Vena Cava and Left Atrium during Catheter Ablation for Atrial Tachycardia
| Autor: | Yoshiko Kakizawa, Hirotaka Nagashima, Chikaya Omichi, Akiko Ishige, Fumio Suzuki, Yasuhiro Ishii, Masahiro Endo, Katsuo Kanmatsuse |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2008 |
| Předmět: |
Tachycardia
medicine.medical_specialty lcsh:Diseases of the circulatory (Cardiovascular) system medicine.medical_treatment Venography Atrial tachycardia Catheter ablation Internal medicine medicine Persistent left superior vena cava cardiovascular diseases Coronary sinus Left superior vena cava medicine.diagnostic_test business.industry Atrial fibrillation medicine.disease Catheter Ligament of Marshall lcsh:RC666-701 Cardiology cardiovascular system medicine.symptom Cardiology and Cardiovascular Medicine business |
| Zdroj: | Journal of Arrhythmia, Vol 24, Iss 1, Pp 38-44 (2008) |
| ISSN: | 1880-4276 |
| Popis: | A 74-year-old man presented with palpitation and 12-lead ECG exhibited atrial premature contraction (APC) at general check-up. Holter ECG demonstrated narrow QRS tachycardia with a rate of 160/min and more than 31,000/day atrial premature beats. The P wave morphology of atrial premature beats showed negative in II, III, aVF and biphasic in V1. Venography was performed and disclosed persistent left superior vena cava (LSVC) draining into the right atrium via the markedly dilated coronary sinus (CS). Electrogram recordings from LSVC and CS were obtained with an electrode catheter via the left subclavian vein. At the level where a ventricular potential disappeared, the intra-LSVC potentials began to show a discrete second sharp potential after local left atrial signals. Double potentials were obtained within the LSVC from the lower left atrium (LA) to the higher LA. A proximal-to-distal activation sequence of the second components was observed. The interval between the 1st and 2nd component ranged from 8 to 22 msec between the proximal LSVC and distal LSVC. The double potentials resulted in fusion at the lower part of the LSVC, indicating the presence of an electrical connection between the LSVC and lower LA. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text