Superior Vena Cava Rhythm Masquerading as Normal Sinus Rhythm

We report the case of a patient with persistent cardiac rhythm originating from the superior vena cava (3 cm above the vena cava‐atrial junction). It was detected by noncontact balloon mapping before induction of tachycardia and confirmed by conventional contact mapping with image studies. Thus, a 1...

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Bibliographic Details
Published in:Journal of cardiovascular electrophysiology 2004-08, Vol.15 (8), p.950-952
Main Authors: YUNIADI, YOGA, TAI, CHING‐TAI, LIN, YENN‐JANG, CHEN, SHIH‐ANN
Format: Article
Language:English
Subjects:
Diagnosis, Differential
Female
Heart Conduction System - physiology
Heart Rate
Humans
Middle Aged
noncontact mapping
Sinoatrial Node - physiology
Sinoatrial Node - physiopathology
sinus node dysfunction
superior vena cava rhythm
Vena Cava, Superior - abnormalities
Vena Cava, Superior - physiopathology
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Summary:We report the case of a patient with persistent cardiac rhythm originating from the superior vena cava (3 cm above the vena cava‐atrial junction). It was detected by noncontact balloon mapping before induction of tachycardia and confirmed by conventional contact mapping with image studies. Thus, a 12‐lead ECG showing normal morphologies of P waves may not indicate that the P waves are of sinus node origin.
ISSN:1045-3873
1540-8167
DOI:10.1046/j.1540-8167.2004.03576.x