Patient's question:
Patient: Male, 71 years old, good physical condition.Current condition:
1. Difficulty urinating, persistent penile erection.
Doctor's answer:
Erectile dysfunction is caused by certain stimuli, leading to persistent dilation of the deep arteries of the corpora cavernosa and persistent contraction of the veins, resulting in a sustained state of congestion. This further affects intravascular blood circulation and oxygen exchange, causing an increase in carbon dioxide tension. Clinically, it may present with significant swelling and pain in the penis. If left untreated, it can lead to blood stasis, increased blood viscosity, and more difficult venous, even forming thrombi and local masses (lasting more than 2 days), with severe venous obstruction.