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Av JUNCTiON ELECTROPHYSiOLOGiC DATA iN PATiENTS HAviNG PAROXYSMS OF ATRiAL FiBRiLLATiON

中国介入心脏病学杂志 1998年第4期6卷 168-168页

作者： S.v.Popov i.v.antonchenko v.v.Aleev institute of Cardiology TomskRussia

The aim of the study was to investigate peculiarities of Av junctionconduction in paroxysmal atrial fibrillation（AF）*** retrospectively assessed electrophysiologic investigations data in53 pts having paroxysmal *** of the Av junctionconduction was performed during rapid and programmed stimulationin the setting of sinus ***（30.1%）pts were revealed tohave signs of longitudinal dissociation of Av conduction which wascharacteristic of suddenly increased A2-H2 interval by more than 50msThe remaining pts did not reveal dual Av conduction *** revealed polyfascicular antegrade Av conduction and distallydisturbed conduction which was manifested by the lengthened H2-v2interval to 70-150 ms during programmed stimulation performed fromthe sinoatrial *** pts had ventricular contractions rate of118±16.4/min in the setting AF both spontaneously induced andinduced by the stimulation which were reliably（pin）.Thirty three（62.2%）pts whohad no multiple Av conducting pathways revealed distally slowed（to40-60 ms）conductionas *** 92.5% of pts having AF paroxysms revealed concealed Avconduction disturbance and 30.2% revealed polyfascicular *** not reveal marked tachysystole in pts having multiple Avconduction pathways and distally disturbed conduction which must betaken into account while performing modification of the Avconduction in these pts.

关键词： fibrillation spontaneously conduction paroxysmal stimulation programmed sinus assessed dissociation disturbance

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POSSiBiLiTiES TO MODiFY Av CONDUCTiON iN ATRiAL FiBRiLLATiON PATiENTS

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中国介入心脏病学杂志 1998年第4期6卷 165-165页

作者： i.v.antonchenko S.v.Popov G.M.Savenkova v.v.Aleev institute of Cardiology TomskRussia

Most of atrial fibrillation(AF)pts have organic artrial injury which ismaintained at modified Av conduction as an Av *** this procedure allows to control ventricular contractionsrate(vCR)in AF *** that "slow" pathways potentials arepotentials of atrial fibers eonneated with the Av node we used highfrequency current in the meadseptal right atrial area in 24 pts aged 52-74(mean 66±4.9 yrs)having paroxysmal(n=16)and chronic(n=8)*** was induced in pts who had sinus rhythm before ablation andif vSR exceeded 50-70 beats/min the procedure was *** results were obtained in 18(75% of pts).These pts didnot reveal decreased Wenekebach point or increased effectiverefractory period of the Av *** decreased from 163±27 to65±9(p=0.001)during *** atropine was given and if vSRexceeded 120/min we considered the procedure to be *** and beta-blockers which were ineffective before ablationbecame effective to control vSR after *** 6 to 12 months afterthe procedure,these pts underwent exercise testing(AF was inducedin the sinus rhythm pts):maximum vCR was 116±10.8/*** the procedure inefficacy,complete Av block was reached duringablation in 2(8%)pts in whom artificial pacemaker was *** modification of Av conduction is an effective procedure tocontrol vSR in AF pts and allows to flee 75% of pts fromantiarrhythmic drugs.

关键词： fibrillation sinus rhythm paroxysmal conduction exercise implanted ablation junction repeated

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