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Electrophysiologic Study of Right Atrial Wave Amplitude in Patients with Paroxysmal Atrial Fibrillation

Author: MaXianLin
Tutor: ChenZuoYuan
School: Qingdao University
Course: Internal Medicine
Keywords: Atrial fibrillation Paroxysmal Amplitude Atrial wave Radiofrequency ablation Pacemaker Artificial
CLC: R541.7
Type: Master's thesis
Year: 2004
Downloads: 34
Quote: 0
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Abstract


The purpose for the study in patients with paroxysmal atrial fibrillation, atrial wave amplitude changes of research in different parts of the right atrium, compare atrial fibrillation A wave amplitude f-wave amplitude with sinus rhythm, and to explore in atrial fibrillation legal state atrial pacemaker and implantable selected fixed position feasibility. Methods 13 patients with paroxysmal atrial fibrillation, and atrial fibrillation in sinus rhythm, respectively 6F electrode catheter sent to the high right atrium, the median right atrium, low right atrium, the upper part of the atrial septum, atrial septal Central and coronary sinus mouth. X-ray after the first bit (AP) prevail, combined with left anterior oblique (LAO) 45 ° comprehensive judgment electrode is in place, the positioning of each part of at least two or more than two experienced EP physician to determine. Electrodes in place, the use of Medtronic PSA 5311 analyzer 6F electrode potential difference between the electrode 1-2. Every part of the continuous measurement of 10 times, the average value of their atrial wave amplitude. Compare different parts of the amplitude value changes, and the same parts of the f-wave amplitude and A wave amplitude differences; among groups using analysis of variance, paired t-test was used to compare between the two groups. Results 1. The middle of the right atrium and the upper part of the atrial septal atrial wave amplitude value is higher than the other four parts of the amplitude. A wave amplitude mean sinus rhythm were 5.01 ± 2.35mV and 5.41 ± 1.60mV; atrial fibrillation f-wave amplitude values ??were 3.93 ± 1.84mV mean and 3.96 1.35mV. 2. A wave amplitude during sinus rhythm small fluctuation range, 4.29 ± 1.44mV ~ 2.88 ± 1.17mV, P = 0.09; fibrillation f wave amplitude fluctuation range significantly increased, 3.73 ± 1.22mV ~ 1.85 0.68mV, P = 0.008. 3. Paroxysmal atrial fibrillation, the middle of the right atrium and the potential between the high and low right atrium showed significant difference (3.93 ± 1.84mV vs.1.72 ± 0.82 mV, 3.93 ± 1.84 mV vs.2.08 ± 1.09 mV, P <0.05 ); potential in the middle of the upper part of the atrial septum and atrial septal significant difference (3.96 ± 1.3 5mV vs.2.39 ± 0.95mV, P <0.05). 4. Atrial fibrillation is lower than the mean of f-wave amplitude A wave amplitude mean, 2.72 ± 0.96mV vs. 3.58 ± 1.3lmV, P = 0.002. Conclusions 1. The different sizes of the different parts of the right atrium and atrial wave amplitude, wherein the upper portion of the middle of the right atrium and atrial septal atrial wave amplitude value representing the amplitude of the other four parts. 2. A sinus rhythm wave amplitude fluctuation range is small, atrial fibrillation f wave amplitude fluctuation range significantly larger. 3. Paroxysmal atrial fibrillation, middle and high right atrium, low right atrium were significantly different between the potentials, atrial septal and atrial septal upper middle there was a marked difference in the potential may be an important part of reentrant loop can be used as RF ablation of the target. 4. Middle and right atrial septal upper f-wave amplitude than other parts of the high right atrium can be used as active fixation electrode implant site, try not to choose fibrillation occurs when the lower part of f-wave amplitude as atrial electrodes implanted in point in order to avoid future occurrence of atrial fibrillation or atrial tachycardia Chinese abstract wave amplitude due to the lower f perception problems caused.

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CLC: > Medicine, health > Internal Medicine > Heart, blood vessels ( circulatory ) disease > Heart disease > Arrhythmia
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