The measuring values of TEE and TTE to inner diameter of ascending aorta were similar(P>0.05).
TEE和TTE对升主动脉内径的测值无显著性差异（P＞0．05）；
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。
The mechanical material constant of ascending aorta at one-dimensional loading of human was basically familiar to that of swine of 1 to 7 months(P > 0.05).
人与1～7月龄猪升主动脉一维载荷下力学材料常数比较基本相似（P>0.05）。
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