Padeletti L, Michelucci A, Giovannini T, Porciani M C, Bamoshmoosh M, Mezzani A, Chelucci A, Pieragnoli P, Gensini G F
Clinica Medica I, University of Florence, Italy.
Pacing Clin Electrophysiol. 1995 Jun;18(6):1266-71. doi: 10.1111/j.1540-8159.1995.tb06966.x.
The purpose of this study was to evaluate the wavelength index (WLI) at three atrial sites in a group of 23 patients with recurrent episodes of lone paroxysmal atrial fibrillation (LPAF) and a control group (n = 20). All patients underwent programmed atrial stimulation (paced cycle length = 600 ms) at high, medium, and low lateral right atrial wall. P wave duration, sinus cycle length, and corrected sinus node recovery time were not significantly different between the two study groups. WLI was calculated according to the following formulas: atrial effective refractory period (AERP)/duration of atrial extrastimulus electrogram (A2) or AERP/A2 + atrial latency; and atrial functional refractory period (AFRP)/A2. WLI was significantly shorter in LPAF than in the control group at each of the paced atrial sites independently of the formula used. Duration of premature atrial electrogram appeared to play the major role in determining the difference in WLI between patients with paroxysmal atrial fibrillation and the control group.
本研究的目的是评估23例复发性孤立性阵发性心房颤动（LPAF）患者和一个对照组（n = 20）中三个心房部位的波长指数（WLI）。所有患者均在右心房高、中、低侧壁接受程控心房刺激（起搏周长 = 600 ms）。两组研究对象的P波时限、窦性周长和校正窦房结恢复时间无显著差异。WLI根据以下公式计算：心房有效不应期（AERP）/心房期外刺激电图持续时间（A2）或AERP/A2 + 心房潜伏期；以及心房功能不应期（AFRP）/A2。在每个起搏心房部位，无论使用何种公式，LPAF患者的WLI均显著短于对照组。房性早搏电图的持续时间似乎在决定阵发性心房颤动患者与对照组之间WLI差异方面起主要作用。
