Priapism is a persistent penile erection that continues hours beyond, or is unrelated to, sexual stimulation and results in a prolonged and uncontrolled erection. Given its time-dependent and progressive nature, priapism is a situation that both urologists and emergency medicine practitioners must be familiar with and comfortable managing. Acute ischemic priapism, characterized by little or no cavernous blood flow and abnormal cavernous blood gases (ie, hypoxic, hypercarbic, acidotic) represents a medical emergency and may lead to cavernosal fibrosis and subsequent erectile dysfunction.

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急性缺血性阴茎异常勃起：AUA/SMSNA 指南。

阴茎异常勃起是一种持续性阴茎勃起，持续数小时后，或与性刺激无关，导致勃起时间延长且不受控制。鉴于其时间依赖性和渐进性，阴茎异常勃起是泌尿科医生和急诊医生都必须熟悉和舒适管理的一种情况。以很少或没有海绵状血流和异常海绵状血气（即缺氧、高碳酸血症、酸中毒）为特征的急性缺血性阴茎异常勃起代表医疗紧急情况，并可能导致海绵体纤维化和随后的勃起功能障碍。