Heparin-induced priapism constitutes a special form of pharmaco-induced prolonged erection, but the pathophysiological principles are not yet definitely clear. Heparin-induced antiplatelet-antibodies may lead to the aggregation of thrombocytes and thus alter the penile blood flow leading to low-flow priapism. Alternatively, this condition may be explained by initial high-flow priapism that later turns into ischemic priapism. The question remains whether hemorrhage with subsequent organisation of the hematoma and late fibrosis constitutes a pathogenetic factor. Besides this pathogenetic discussion, this paper presents the differential diagnosis of priapism as well as diagnostic and therapeutic procedures.

中文翻译：

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肝素引起的阴茎异常勃起。

肝素引起的阴茎异常勃起是药物引起的长期勃起的一种特殊形式，但其病理生理学原理尚不清楚。肝素诱导的抗血小板抗体可能导致血小板聚集，从而改变阴茎血流，导致低血流性阴茎异常勃起。或者，可以通过最初的高流量阴茎异常勃勃症后来又转变为缺血性阴茎异常勃起症来解释这种情况。问题仍然是，出血以及随后的血肿组织和晚期纤维化是否构成致病因素。除了这种致病性讨论外，本文还介绍了阴茎异常勃勃的鉴别诊断以及诊断和治疗方法。