VIDEO ANSWER
Why erections often improve after surgery
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Original video description
Why do erections often improve after surgery? Because many patients already had problems caused by their medication (tamsulosin, dutasteride) and function recovers once they stop; and because they sleep better without getting up at night.
Subtitle text
Source: subtitles available on YouTube.
And how does it improve? It improves because many patients already have erectile problems before surgery due to the medication they're taking. Tamsulosin, dutasteride, combinations with other drugs and by stopping the medication after surgery, sexual function recovers.
It's also true that patients who have surgery end up sleeping better. They'll urinate fewer times at night, and that nighttime rest also promotes a good erection.