Superior vena cava rhythm masquerading as normal sinus rhythm

Journal of Cardiovascular Electrophysiology
Yoga YuniadiShih-Ann Chen

Abstract

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.

References

Jan 1, 1986·Clinical Cardiology·T ImamuraM Nakamura
Oct 1, 1995·Archives of Histology and Cytology·H HashizumeK Abe
Nov 4, 2000·Pacing and Clinical Electrophysiology : PACE·P C LeeS A Chen
Mar 19, 2002·Journal of the American College of Cardiology·Nassir F MarroucheAndrea Natale
Apr 29, 2003·Pacing and Clinical Electrophysiology : PACE·Tim R BettsJohn M Morgan

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