Why are patients with BPH at increased risk for urinary tract infections?

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The following factors increase the risk of urinary tract infection (UTI) in patients with benign prostatic hyperplasia.

1. Urinary stasis. The BPH-related enlarged prostate can obstruct normal urine flow from the bladder. This leads to urinary retention or stasis. Urinary Stasis: Urinary retention can increase the chance of UTIs by promoting bacterial growth.
2. Uncomplete Bladder Emptying: An enlarged prostate can also prevent the bladder from being completely emptied, resulting in residual urine. This residual urine can provide an environment that is conducive to bacteria growth and increase the likelihood of UTIs.
3. BPH can cause an increase in prostatic secretions. The secretions may act as breeding grounds for bacteria which increases the chance of UTIs.
4. Increased vulnerability to UTIs: The immune system of men may weaken as they get older, increasing their susceptibility to UTIs and other infections. BPH patients who have chronic conditions such as diabetes may also be at risk for UTIs due to a compromised immune system.

BPH is associated with an increased risk of UTIs because it causes urinary stasis and incomplete bladder emptying. It also increases prostatic secretions.