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男性勃起功能障碍(erectile dysfunction,ED)是指男性持续性或反复发作的,难以达到和维持阴茎勃起来完成满意性交的病理现象。Moreland提出ED的发生可能是由于收缩因子和舒张因子之间的分泌失调所导致。这些舒张和收缩因子主要是由中枢和外周神经以及阴茎海绵体内窦隙及血管内
Male erectile dysfunction (erectile dysfunction, ED) refers to the male persistent or recurrent, it is difficult to achieve and maintain penile erection to complete the satisfactory sexual intercourse pathological phenomenon. Moreland suggested that the occurrence of ED may be due to the imbalance between contraction and relaxation factors. These diastolic and contractile factors mainly by the central and peripheral nerves and penis cavernous sinus and intravascular