Corporal Blood Gas Testing
Ischemic cavernosal blood is typically dark, hypoxemic, anoxic, and glucopenic. Typical values of ischemic cavernosal blood are a partial pressure of oxygen (PO2) < 30 mm Hg, a partial pressure of carbon dioxide (PCO2) > 60 mm Hg, and pH < 7.25. Conversely, arterial blood seen in cases of nonischemic/high-flow priapism displays values more consistent with standard serum arterial blood gas values, namely, PO2 > 90 mm Hg, PCO2 < 50 mm Hg, and pH > 7.35.39
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