Wojtal E, Górewicz R, Borkowski M
Acta Physiol Pol. 1984 Jan-Feb;35(1):63-71.
The effect of sympathectomy on the functional state of skin arteriovenous anastomoses (AVA) and on the development of trophic ulceration after sciatic nerve transection was studied in rabbits. The functional state of the AVA (their opening or occlusion) was determined on the basis of gasometric and radiological investigations. The experiments showed that sympathectomy leads to an occlusion of AVA or at least to a marked reduction in blood flow through that part of microcirculation. The improvement in nutritional flow due to the increase in capillary flow and reduction in AVA flow hampers to a certain degree the development of the ulceration and results in transient healing. A hypothesis is presented about different innervation pathways of AVA and precapillary sphincters.
在兔子身上研究了交感神经切除术对皮肤动静脉吻合支（AVA）功能状态以及坐骨神经横断后营养性溃疡形成的影响。基于气体测量和放射学检查确定AVA的功能状态（开放或闭塞）。实验表明，交感神经切除术会导致AVA闭塞，或者至少使通过该部分微循环的血流量显著减少。由于毛细血管血流量增加和AVA血流量减少而导致的营养性血流改善在一定程度上阻碍了溃疡的形成，并导致暂时愈合。提出了关于AVA和毛细血管前括约肌不同神经支配途径的假说。
