The right ventricular outflow tract as an alternative permanent pacing site: long-term follow-up

The long-term characteristics of the right ventricular outflow tract have been assessed as an alternative permanent pacing site to the right ventricular apex. Thirty-three consecutive patients requiring ventricular pacing were randomized to be paced from one of the two sites. Pacing was performed us...

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Bibliographic Details
Published inPacing and clinical electrophysiology Vol. 14; no. 1; p. 3
Main Authors Barin, E S, Jones, S M, Ward, D E, Camm, A J, Nathan, A W
Format Journal Article
LanguageEnglish
Published United States 01.01.1991
Subjects
Aged
Cardiac Pacing, Artificial - methods
Electric Conductivity
Electrocardiography, Ambulatory
Electrodes, Implanted
Female
Follow-Up Studies
Heart Ventricles - anatomy & histology
Humans
Male
Middle Aged
Myocardial Contraction
Pacemaker, Artificial
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Summary:The long-term characteristics of the right ventricular outflow tract have been assessed as an alternative permanent pacing site to the right ventricular apex. Thirty-three consecutive patients requiring ventricular pacing were randomized to be paced from one of the two sites. Pacing was performed using a screw-in lead, and a programmable pacemaker was used to facilitate threshold testing. There was no significant difference in the lead positioning time or any acute implant measurement (e.g., threshold at 0.5 msec 0.4 +/- 0.2 V for both sites, P = 0.99). Chronic measurements were also comparable during follow-up (mean 73 months) with a mean threshold at most recent follow-up of 0.15 +/- 0.2 msec (apex) and 0.13 +/- 0.21 msec (outflow tract) at 5 V, P = 0.81. There was only one pacing related complication, a lead dislodgment (outflow tract) in a pacemaker twiddler. Overall, both sites were highly satisfactory.
ISSN:0147-8389
DOI:10.1111/j.1540-8159.1991.tb04040.x