One of the potential side effects of a prostate biopsy is the inability to urinate afterwards. This is referred to as urinary retention. It is not very common after prostate biopsy, but it does happen from time to time. As men age they tend to become prone to urinary retention due to an enlarged prostate and a less effective bladder, among others. When the prostate gets irritated from the biopsy the patient can potentially go in retention. In such circumstances the patient will require to be catheterized with catheter left in for a few days. At the same time the patient may be started on some medications that help prevent urinary retention. The most common ones used are: Cardura, Hytrin and Flomax. If after the catheter is removed several days later, he still can not urinate, he may be started on a course of self catheterization, on a 3 to 4 times per day basis.
As far as the clot in the urethra as the cause of the problem, it is not likely in this particular case.
Additionally, it is highly unlikely that the bladder was punctured during the biopsy, and even if it had urinary retention would be not likely to ensue. You should talk to you father's urologist about this problem.
This information is provided for general medical educational purposes only. Please consult your physician for diagnostic and treatment options pertaining to your specific medical condition. More individualized care is available at the Henry Ford Hospital and its satellites (1 800 653-6568).
*keyword: retention after TRUS