Proprietà elettrofisiologiche atriali nella fibrillazione atriale parossistica. Studio effettuato stimolando cinque sedi atriali.

Translated title of the contribution: Atrial electrophysiologic properties in paroxysmal atrial fibrillation. Study conducted with the stimulation of 5 atrial sites

L. Padeletti, A. Michelucci, T. Giovannini, A. Mezzani, A. Monopoli, F. Franchi

Research output: Contribution to journalArticlepeer-review

Abstract

Programmed atrial stimulation at five atrial sites was performed to evaluate electrophysiologic atrial properties in 17 control patients (14 M, 3F, mean age 61 +/- 9 years) (Group A) and in 18 patients with paroxysmal atrial fibrillation (13 M, 5 F, mean age 61 +/- 5 years) (Group B) with normal sinus node function. The mean value of the P wave duration was similar in both groups. Programmed atrial stimulation was performed at five atrial sites: high, medium and low lateral wall, and high and low medial wall. We evaluated the following parameters: A) local conduction delay measured at the functional refractory period as the difference between A1-A2 and S1-S2 intervals; B) widening of local electrogram measured at the functional refractory period as the difference between A1-A2 interval measured at the end of each local electrogram and A1-A2 interval measured at the beginning of each local electrogram. We evaluated the mean and the maximum value of the two above-mentioned parameters; C) dispersion of effective refractory period and functional refractory period, determined as the longest minus the shortest refractory period from the range of refractory periods measured in each patient; D) the mean of effective refractory periods and functional refractory periods observed at five atrial sites. Mean and maximum local conduction delay, mean effective and functional refractory periods did not present significant differences in both groups.(ABSTRACT TRUNCATED AT 250 WORDS)

Translated title of the contributionAtrial electrophysiologic properties in paroxysmal atrial fibrillation. Study conducted with the stimulation of 5 atrial sites
Original languageItalian
Pages (from-to)411-416
Number of pages6
JournalGiornale Italiano di Cardiologia
Volume19
Issue number5
Publication statusPublished - May 1989

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

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