Objective To analyse the effects of rapid atrial pacing on P wave duration and dispersion.
目的分析快速心房刺激对P波时限及离散度的影响。
The surface body electrocardiogram(ECG) manifestations of biatrial pacing are that P wave duration shortens, the polarity of P wave changes to negative, PR interval gets shorter correspondingly.
双房同步起搏体表心电图表现为P波时限短、负向或正负双向，PR间期相应缩短。
Conclusion The extent of atrial fibro sis was increased in abdominal aorta banded rats. Although longer P wave duration and IACT are present, there is no change in atrial effective refractory period.
结论腹主动脉结扎大鼠心房纤维化程度增加，P波时限增宽，IACT延长，心房有效不应期没有改变。
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