Sentence examples for pacing cycle from inspiring English sources
As pacing cycle length decreases, both the normal and failing heart develop T-wave alternans, but only the failing heart shows QRS alternans (although moderate) at rapid pacing.
The short-term variability of the monophasic action potential was found to be partially influenced by pacing cycle length and was moderately decreased at faster cycle lengths in anesthetized dogs with chronic AV block characterized by marked bradycardia and myocardial hypertrophy [52].
The effective refractory period (ERP) was measured by giving a premature stimulus after 8 beats at a 400 ms pacing cycle length (PCL).
Electrocardiographic signals were monitored to ensure 1 1 capture, and pacing cycle lengths were maintained at 10 15% above the sinus rate for the duration of the experiment.
The PES protocol consisted of trains of eight beats at pacing cycle lengths of 100 ms and 80 ms, followed by single extrastimuli for the determination of ventricular effective refractory period (VERP) and double extrastimuli to assess for inducible arrhythmias.
To mark stimulation time in optical recordings, a small 940 nm LED (light emitting diode) generating 0.5 ms pulses in synchrony with the pacing cycle was placed in the field of view of the camera.
The same AC was used for programmed PES at pacing cycles between 200 and 250 ms.
Wenckebach periodicity was determined by progressively shortening the paced cycle length and defined as the shortest cycle length maintaining a 1 1 conduction between the atrium and ventricles.
Orciprenaline shortened ventricular APD and decreased APD dispersion at paced cycle lengths of 200 and 300 ms (orciprenaline 9 ± 1 *vs. baseline 19 ± 2 ms).
In addition, the long paced cycles were partially perturbed by overexpression and depletion of the ligand-dependent corepressor, RIP140.
It is currently unclear whether the long paced oscillations we have observed are specific for RARs or coexist with short paced cycles that have been shown for ER, GR and AR.
