A simple method to ablate left-sided accessory pathways in a patient with coronary sinus ostial atresia and persistent left superior vena cava: A case report

Kataoka, Shohei; Enta, Kenji; Yazaki, Kyoichiro; Kahata, Mitsuru; Ishii, Yasuhiro

doi:10.1016/j.hrcr.2016.09.014

Cited by 1 publication

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“…Accessory pathways are considered an extra piece of heart muscle tissue that connects the atrium and the ventricle. This abnormal tissue develops at the same embryonic stage as the CS [ 11 , 12 ]. Therefore, it seems reasonable to assume that PLSVC and accessory pathways are embryologically related to each other.…”

Section: Discussionmentioning

confidence: 99%

Multiple accessory pathways coexisting with a persistent left superior vena cava: a case report

et al. 2023

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Background Wolff–Parkinson–White syndrome is characterized by a short PR interval (delta-wave), long QRS complex, and the appearance of paroxysmal supraventricular tachycardia. Patients with Wolff–Parkinson–White syndrome usually have one accessory pathway, whereas cases with multiple accessory pathways are rare. Persistent left superior vena cava is a vascular anomaly in which the vein drains into the right atrium through the coronary sinus at the junction of the left internal jugular and subclavian veins due to abnormal development of the left cardinal vein. The simultaneous presence of multiple accessory pathways and persistent left superior vena cava has not been reported before. Case presentation A 56-year-old Japanese man with a 5-year history of palpitations was referred for radiofrequency catheter ablation due to increased frequency of tachycardia episodes in the previous 2 months. Persistent left superior vena cava was confirmed by transthoracic echocardiography and computed tomography. An electrophysiological study revealed that the accessory pathways were located in the left lateral wall, anterolateral wall, and posteroseptal region. They were completely ablated with radiofrequency energy application. Conclusions We reported an extremely rare case of a patient with multiple accessory pathways and persistent left superior vena cava. Our case may suggest a potential embryological relationship between the multiple accessory pathways and persistent left superior vena cava.

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Section: Discussionmentioning

confidence: 99%