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Changes in QT Interval during Exercise Testing in Patients with VVI Pacemakers

Corresponding Author

EIJI ODA

First Department of Internal Medicine, Niigata University School of Medicine, Niigata, Japan

Address for reprints: Eiji Oda. M.D., Department of Internal Medicine, Sanjo General Hospital. Ichinokido 1546. Sanjo, Niigata 955. Japan.Search for more papers by this author

EIJI ODA,

Corresponding Author

EIJI ODA

First Department of Internal Medicine, Niigata University School of Medicine, Niigata, Japan

Address for reprints: Eiji Oda. M.D., Department of Internal Medicine, Sanjo General Hospital. Ichinokido 1546. Sanjo, Niigata 955. Japan.Search for more papers by this author

First published: January 1986

https://doi.org/10.1111/j.1540-8159.1986.tb05359.x

Citations: 6

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Abstract

. The changes in QT intervals were studied in nine patients with normal sinus node function who had VVI pacemakers. Though PP intervals uniformly shortened during exercise, the change in QaT* intervals during exercise was variable. The correlation between PP and QaT intervals varied from case to case. A good correlation was found in only two cases (r =+0.816 or +0.897); a fair correlation was found in four cases (r =+0.672, +0.615, +0.615, or −0.669) and in the remaining three, the correlation was poor (r =+0.494, +0.467 or−0.424). In patients who are candidates for VTI pacemaker implantation, changes in QaT intervals should be assessed during exercise stress testing to determine if the intervals shorten during exercise or not.

(QaT*: Interval from the pacing spike to the apex of T-wave.)

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Volume9, Issue1

January 1986

Pages 36-41

Changes in QT Interval during Exercise Testing in Patients with VVI Pacemakers

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Changes in QT Interval during Exercise Testing in Patients with VVI Pacemakers

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