Urological Emergencies

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Priapism

Priapism is a prolonged, painful penile erection that occurs when blood in the penis is "trapped," or unable to drain. The stagnant blood causes an erection that can last from hours to days. A painful erection lasting for more than 4 hours indicates priapism. If not treated promptly, scarring and permanent inability to achieve an erection (impotence) can result.

Types

Veno-occlusive (low-flow)

Veno-occlusive (blocked vein) priapism develops when circulation in the penis be...Read the full article