All of the following are true concerning priapism EXCEPT:
A. Priapism is defined as a persistent erection for >4 hours unrelated to sexual stimulationPriapism is a persistent erection for more than 4 hours unrelated to sexual stimulation. Risk factors include sickle cell disease or trait, malignancy, medications, cocaine abuse, certain antidepressants, and total parenteral nutrition. Low-flow priapism can be confirmed with a penile blood gas of the cavernosal bodies demonstrating hypoxic, acidotic blood. Injection of phenylephrine (up to 200 mg in 20 mL normal saline) into the corporal bodies may be required.