Radiofrequency catheter ablation using high-resolution mapping successfully identified and eliminated atrial tachycardia originating from the inferior vena cava.
Case Report (n=1)
No
High-resolution mapping using a multielectrode catheter successfully identified the origin of an atrial tachycardia at the right atrium-inferior vena cava boundary, allowing for successful radiofrequency ablation.
A 60-year-old man presented with sustained supraventricular tachycardia. Atrial tachycardia (AT), with the earliest atrial activation (EAA) occurring at the ostium of the coronary sinus, was reproducibly induced. Three-dimensional electroanatomical mapping (3DEAM) using a 3.5-mm distal electrode tip linear catheter (Thermocool) and radiofrequency energy (RF) was performed at the fractionated atrial electrogram site. It preceded at 30 ms to the EAA but did not terminate AT. Further 3DEAM using a multielectrode mapping catheter (Pentaray) demonstrated a centrifugal propagation pattern at the boundary zone between the right atrium and inferior vena cava. RF application here terminated AT, which then became non-inducible.
Fukumoto et al. (Tue,) conducted a case report in Atrial tachycardia (n=1). Radiofrequency catheter ablation using high-resolution mapping was evaluated on Termination of atrial tachycardia. Radiofrequency catheter ablation using high-resolution mapping successfully identified and eliminated atrial tachycardia originating from the inferior vena cava.