PMID: 6834641Mar 1, 1983Paper

The effect of pacing site on the echo zone in patients with concealed Wolff-Parkinson-White syndrome

Japanese Circulation Journal
T OheK Shimomura

Abstract

In 14 patients with the left-sided concealed Wolff-Parkinson-White syndrome, the effects of changing atrial pacing site on the echo zone were evaluated. In 12 patients, re-entrant tachycardia was induced by premature stimuli both in the coronary sinus (CS) and the high right atrium (HRA). In the remaining 2 patients, the tachycardia was induced by premature stimuli only in the CS. The lower limit of the echo zone was shifted to a longer coupling interval during CS pacing in 12 patients. The longer effective refractory period (ERP) of the CS was responsible for the shifting of the lower limit of the echo zone to a longer coupling interval. The upper limit of the echo zone was shifted to a longer coupling interval during CS pacing in 10 patients. The difference of atrial conduction times from the site of stimulation to the 2 conduction pathways (the normal conduction pathway and the accessory pathway) is thought to be responsible for the shifting of the upper limit of the echo zone.

Citations

Apr 11, 2008·Journal of Biomedicine & Biotechnology·Alicja JankowskaElzbieta Grzesiuk
Jul 31, 2010·Dermatology Research and Practice·David Garrod

Related Concepts

Structure of Atrioventricular Node
Electric Stimulation Technique
Electrode
Refractory Period, Electrophysiological
Tachycardia
Wolff-Parkinson-White Syndrome

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