Calderón A M, Catalá J J, Aguado P L
Artery. 1985;13(3):165-86.
The passive mechanical properties of the aorta from rats were investigated on in vitro preparations during pregnancy. At 0 mm Hg, volume was found to be higher in pregnancy than in control series. At the lower pressures of the hysteresis curves, Volumetric Distensibility Modulus was higher in control series than during pregnancy. Hysteresis percentage, and stress relaxation were found to be diminished during pregnancy. The water of the aortic wall was increased from the 14th day of pregnancy. This evidence suggests that during pregnancy there was an increase in volume and vessel turgidity, which could be taken in relationship with the lowering of the fibrous elements folds.
在孕期，对大鼠主动脉的被动力学特性进行了体外研究。在0毫米汞柱时，发现孕期的主动脉容积高于对照组。在滞后曲线的较低压力下，对照组的体积扩张模量高于孕期。发现孕期的滞后百分比和应力松弛有所降低。从孕期第14天起，主动脉壁的含水量增加。这一证据表明，孕期主动脉容积和血管充盈度增加，这可能与纤维成分褶皱的减少有关。
