- Normally: The ureter has a one-way valve as it enters the bladder. When the bladder squeezes to empty as you urinate, the valve keeps the urine from flowing back into the ureter and kidney.
- With a stent: The stent is a hollow tube that extends through your ureter and into the bladder, and temporarily keeps the one-way valve from closing. This means that when your bladder squeezes as you urinate, some of the urine flows back up the ureter and presses on the kidney. This causes pain while you urinate.
Susan J. Kalota, MD
Location and Office HoursUrological Associates of Southern Arizona PC
6252 E Grant
Tucson, AZ 85712
Why does it hurt when I urinate with a ureteral stent?
Intermountain Healthcare answeredIf you have a ureteral stent, you can expect pain in your bladder, urethra, and kidney when you urinate. Why? The stent temporarily changes the way the bladder, ureter, and kidney work together.
What is ischemic nephropathy?
Johns Hopkins Medicine answered
Ischemic, which comes from the Greek word ischemia, means restriction of blood supply. Nephropathy is damage to the kidneys. Thus, ischemic nephropathy is dysfunction of the kidneys due to compromised blood flow in the arteries.
What can cause urinary problems in men besides an enlarged prostate?
It was once thought that the urinary difficulties that men experience as they age were the result of an enlarging prostate constricting the urethra. If this were the case, symptoms would tend to get worse as the prostate got larger. But this is not the case. Rather, the smooth muscle in the prostate and the bladder also play key roles in causing urinary symptoms. When the smooth muscle gets chronically tense, it puts pressure on the urethra and bladder neck, increasing the resistance to urine flow. And, as resistance to urine flow increases, the bladder has to work harder to empty itself. To do this, the bladder contracts its muscular wall, called the detrusor muscle. This action causes the muscle to thicken and get stronger, further reducing the capacity of the bladder.
Sometimes the muscle contracts when the bladder is not full, giving the sensation of needing to urinate. Over time, as the bladder tries harder to empty itself, it becomes less efficient. The result: The need to urinate more frequently and the sensation of not having emptied the bladder of urine.
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