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Can an S3 Extrastimulus Light the Way for More Targeted VT Substrate Ablation?
JACC Clin Electrophysiol
July 2024
Institute of Cardiovascular Science, University College London, Barts Heart Centre, London, United Kingdom. Electronic address:
Characteristics of slow pathway conduction after successful AVNRT ablation.
J Cardiovasc Electrophysiol
August 2006
Division of Cardiology, Department of Medicine, London Health Sciences Centre, London, Ontario, Canada.
Background: AV node slow pathway conduction can persist following successful ablation for AV node reentrant tachycardia (AVNRT). We hypothesized that careful examination of AV nodal conduction curves before and after effective AVNRT ablation in patients with persistent slow pathway conduction could shed light on this apparent paradox.
Methods And Results: Thirty patients (age 40.
Relationship between age and anterograde refractoriness of the accessory pathway in Wolff-Parkinson-White patients.
Cardiology
December 1989
Cardiology Unit, University of Florence, Italy.
In 22 patients (age range 13-40 years) with Wolff-Parkinson-White ECG pattern without evidence of associated cardiomyopathy we measured the anterograde effective refractory period of the accessory pathway (ERP-AP) by extrastimulus method (at twice diastolic threshold) during atrial pacing (100/min). The ERP-AP range was 220-480 ms. There was a significant direct correlation between age and ERP-AP (r = 0.
View Article and Find Full Text PDF[Divergent effect of acetylcholine on processes of habituation and disinhibition].
Zh Vyssh Nerv Deiat Im I P Pavlova
August 1980
The elaboration of habituation to repeated tactile stimuli was studied in snail (Helix pomatia) by means of intracellular recording of the neuronal activity and microionophoresis of acetylcholine (ACh). Light or a stronger tactile stimulation served as extrastimulus. The elaboration of habituation was accompanied by a rise in the threshold of action potentials (APs) generation, evoked by the habitual stimulus, and by a lowering of the threshold of APs elicited by the extrastimulus.
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