Ureteral obstruction
MONDO:0003329Blockage in any part of the ureter causing obstruction of urine flow from the kidney to the urinary bladder. The obstruction may be congenital, acquired, unilateral, bilateral, complete, partial, acute, or chronic. Depending on the degree and duration of the obstruction, clinical features vary greatly such as hydronephrosis and obstructive nephropathy.
Also known as: ureteral obstruction, ureteral obstruction (disease)
9 clinical trials for this condition and its sub-types.
Follow this condition — get notified about new trialsBroader categories
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Which drain first? trial tests best emergency move for blocked kidney
Disease control Recruiting nowThis study looks at people with a sudden kidney blockage from a stone in their only working kidney. Doctors will randomly use either a tube placed through the bladder or one through the back to drain urine. The goal is to see which method helps kidney function recover better and …
Phase: NA • Sponsor: Beni-Suef University • Aim: Disease control
Last updated Jun 27, 2026 13:04 UTC
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New stent aims to cut infections and hospital visits for kidney and cancer patients
Symptom relief Recruiting nowThis study tests a new type of ureteric stent designed to cause fewer blockages, infections, and less pain than standard stents. About 50 adults who have had stents before for kidney stones or cancer will try the new stent. The goal is to see if it reduces complications and the n…
Phase: NA • Sponsor: University of Southampton • Aim: Symptom relief
Last updated Jun 27, 2026 12:31 UTC
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New ultrasound test may predict kidney healing in kids after surgery
Knowledge-focused Recruiting nowThis study looks at whether a special ultrasound technique, called shear wave elastography, can predict how well a child's kidney will recover after surgery to fix a blockage. Researchers will measure kidney stiffness before and after surgery in 84 children aged 6 months to 18 ye…
Sponsor: Beni-Suef University • Aim: Knowledge-focused
Last updated Jun 27, 2026 13:00 UTC