Characterization of oscillations in ventricular refractoriness in man after an abrupt increment in heart rate.


Oscillations in ventricular myocardial refractoriness after a change in rate have not been described in man. During 25 baseline paced cycle lengths (SB-SB) of 400 to 800 msec in 14 patients, a shorter cycle length (S'-S') was introduced that was 10 to 20 msec (mean 15 +/- 5) greater in duration than the ventricular effective refractory period (VERP… (More)


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