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A ureteral stent (pronounced you-REE-ter-ul), or ureteric stent, is a thin tube inserted into the ureter to prevent or treat obstruction of the urine flow from the kidney. The length of the stents used in adult patients varies between 24 and 30 cm. Additionally, stents come in differing diameters or gauges, to fit different size ureters.
Left sided hydronephrosis in a person with an atrophic right kidney. Stent is also present (image below). Left sided hydronephrosis, coronal view. Stent is also present. Treatment of hydronephrosis focuses on the removal of the obstruction and drainage of the urine that has accumulated behind the obstruction.
One ureteroscopic technique involves the placement of a ureteral stent (a small tube extending from the bladder, up the ureter and into the kidney) to provide immediate relief of an obstructed kidney. Stent placement can be useful for saving a kidney at risk for postrenal acute kidney failure due to the increased hydrostatic pressure, swelling ...
Endoscopic image of a biliary stent seen protruding from the ampulla of Vater at the time of duodenoscopy. Pancreatic and biliary stents provide pancreatic and bile drainage from the gallbladder, pancreas, and bile ducts to the duodenum in conditions such as ascending cholangitis due to obstructing gallstones.
The stylet is used to detach the balloon catheter from the pusher. During the healing process urine drains through the wide central lumen while the balloon remains inflated. The ureteric balloon catheter may be used in conjunction with a double J stent for additional drainage. To remove the catheter after several weeks the balloon is deflated ...
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Pyelonephritis is inflammation of the kidney, typically due to a bacterial infection. [3] Symptoms most often include fever and flank tenderness. [2] Other symptoms may include nausea, burning with urination, and frequent urination. [2] Complications may include pus around the kidney, sepsis, or kidney failure. [3]
Residents gather on a street in the Damascus suburb of Jaramana on Dec. 8, 2024, after Syrian rebels said that President Bashar Assad had fled the country. / Credit: LOUAI BESHARA/AFP via Getty Images