title: [Radiofrequency catheter ablation of supraventricular tachycardia in a patient with congenital absence of inferior vena cava].
abstract: We describe a case of a 54-year-old female referred for ablation of supraventricular tachycardia (recurrent episodes under anti arrhythmic therapy). During a first procedure catheters progressed on the left side of the spine draining to the superior vena cava. Multi-row detector CT angiography revealed infrahepatic interruption of the inferior vena cava with venous blood drainage into the superior vena cava, via the azygos venous system, a previously unknown asymptomatic anomaly. Ablation was subsequently performed successfully using a mixed approach via the right suclavian vein (ablation catheter) and the azygos venous system (diagnostic catheter in the coronary sinus).
authors.affiliation: Sociedade de Cardiologia, Hospital de Santa Cruz, Centro Hospitalar de Lisboa Ocidental, Carnaxide, Portugal. sonialima@spc.pt
authors.forename: Sonia
authors.initials: S
authors.lastname: Lima
authors.forename: Diogo
authors.initials: D
authors.lastname: Cavaco
authors.forename: Carla
authors.initials: C
authors.lastname: Saraiva
authors.forename: Renata
authors.initials: R
authors.lastname: Gomes
authors.forename: Pedro
authors.initials: P
authors.lastname: Adragão
authors.forename: José Aniceto
authors.initials: JA
authors.lastname: Siiva
mesh_terms: D017115:Catheter Ablation; D005260:Female; D006801:Humans; D008875:Middle Aged; D013617:Tachycardia, Supraventricular / Q000601:surgery*; D014682:Vena Cava, Inferior / Q000002:abnormalities*