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Inter‐ and Intraindividual Variations in Shortening of Ventricular Effective Refractory Period After an Abrupt Decrease in Pacing Cycle Length
Author(s) -
LEERSSEN HENDRIK M.,
VOS MARC A.,
DULK KAREL Den,
ZANDE JOLANDA,
BEGEMANN MALCOLM J.,
WELLENS HEIN J.
Publication year - 1994
Publication title -
pacing and clinical electrophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.686
H-Index - 101
eISSN - 1540-8159
pISSN - 0147-8389
DOI - 10.1111/j.1540-8159.1994.tb03804.x
Subject(s) - medicine , refractory period , cardiology , refractory (planetary science) , period (music) , biology , astrobiology , physics , acoustics
After an abrupt decrease in pacing cycle length (PCL), the ventricular effective refractory period (VERP) shortens. The pacing protocol needed to determine accurate and reproducible values for the VERP during this process is elaborate and time consuming. In this study, steady‐state values of VERP at 800 and 350 msec PCL and dynamic values of VERP due to an abrupt change in PCL from 800 to 350 msec were determined. This was done for 11 different dogs to test the interindividual variation and repetitively in the same dog to test the intraindividual variation. The results for steady‐state and dynamic values of the VERP show a wide range for both groups. This means that accurate prediction of steady‐state and dynamic values of VERP based on previous measurements is not possible.