The low-flow type of continuous erection is mainly caused by cavernous vein obstruction. At this time, the arterial blood supply is also reduced, so tissue hypoxia and acidosis develop rapidly, which is easy to cause smooth muscle paralysis in the wall of the cavernous body and arterioles, resulting in thrombus formation in the sponge cavity, resulting in complete occlusion of the ven... https://www.viagra-hk.cn