过敏性休克时心肌收缩力减弱，小血管扩张，毛细血管通透性增加。
When allergic shock the cardiac muscle shrinkage force is weaken, the minute vessel expands, the blood capillary permeability increases.
由这些细胞释放出的组胺导致小血管扩张，引起众所周知的症状，比如搔痒、口腔肿胀、皮疹、鼻子发痒或流鼻涕，或腹泻。
Histamine released by these cells causes small blood vessels to dilate, giving rise to the well-known symptoms such as itching and swelling in the mouth, skin rash, itchy or runny nose or diarrhoea.
检查时可发现该肿瘤有如下特征：无痛性结节，表面光亮呈蜡样，质硬不活动，有珍珠般光泽，边缘卷曲且有小的扩张血管。
On examination the tumor may have the following characteristics: painless nodule, shiny and waxy, indurated, firm and immobile, pearly, rolled border, and small telangiectatic vessels.
其作用源于大的容量血管和小的阻力血管的同时扩张。
This effect is due to dilation of both the large conductance and small resistance renal blood vessels.
电损伤释放的局部物质引起血管扩张和增加小血管的通透性。
Local substances released by injury produce vasodilatation and increased small vessel permeability.
小剤量能收缩血管。大剤量能扩张血管。
Small doses constrict the blood vessels and large doses dilate the blood vessel.
当增强CT显示血管扩张、迂曲而血管增多的肠系膜和广泛分布的直小血管，产生梳征。
When contrast-enhanced CT depicts hypervascularity of the mesentery with vascular dilatation, tortuosity, and wide spacing of the vasa recta , the comb sign is produced.
结论微血管性心绞痛是由于小冠状动脉扩张贮备降低或异常收缩而导致的心肌缺血。
Conclusion Reduced vasodilator reserve or inappropriate vasoconstriction of the coronary microvessels are implicated as causes of microvascular angina.
结论微血管性心绞痛是由于小冠状动脉扩张贮备降低或异常收缩而导致的心肌缺血。
Conclusion Reduced vasodilator reserve or inappropriate vasoconstriction of the coronary microvessels are implicated as causes of microvascular angina.
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