An observational study in Kidney Stones, Tumor and Hydronephrosis, sponsored by University of British Columbia. Withdrawn at 1 site in Canada. Open to participants aged 19 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2020-03-25.
Sponsored by University of British Columbia · Observational
The purpose of the study is to investigate the impact of ureteral stents on the functioning of ureteral peristalsis (normal contractions in the ureteral organ muscle).
Ureteral stents are commonly used in the field of urology to maintain urinary drainage and are inserted into ureters of patients who suffer from kidney stones, urinary tract infections or cancer. Usually the muscle cells of the ureter contract in a coordinated fashion (peristalsis) in order to provide urinary flow from the kidney into the bladder. By inserting a stent these contractions are disrupted, eventually resulting in a loss of peristalsis. This phenomena is accompanied by swelling of the kidney and pain, which are well-known negative side effects of stents. To avoid stent-related morbidity and improve patients care this issue needs to be investigated further. A first step is to analyse the impact of stents on peristalsis and to possibly bring these results into context with hypothesised molecular mechanisms involved in peristalsis.
509 studies on the registry are indexed under Kidney Calculi; 146 are open to participants now.
Browse Kidney Calculi studies →University of British Columbia is the lead sponsor of 1,339 studies on the registry; 259 are open to participants now.
Of its 6 completed or terminated interventional studies of FDA-regulated products, 1 (17%) have results posted.
Counted across the registry records on this site, refreshed daily.
Patients who require unilateral insertion of a ureteral stent for the following indications will be included in this clinical trial:
Inclusion Criteria:
Exclusion Criteria:
Exclusion criteria for control group:
non-stented volunteers to receive ultrasound for peristalsis changes detection
patients who receive stent, and to receive ultrasound for peristalsis changes detection in their stented and non-stented ureter
Device: Ureteral Stent
patients who need to receive stent as per standard of care
Effect of stent on ureteral peristalsis in stented ureter
before and after stent insertion (approximately 30 minutes)
Time frame: before and after stent insertion (approximately 30 minutes)
Effect of stent on ureteral peristalsis in non-stented ureter
Effect of stent on ureteral peristalsis in non-stented ureter pre and post stenting
Time frame: 30 minutes (pre and post stenting)
The record gives a start of Dec 2012, a primary completion of Dec 2014 and a completion of Dec 2014. It does not say whether these dates are actual or estimated.
How these figures are worked out, and which studies are left out of them.
This study is withdrawn, as verified in Mar 2020. You cannot join it, but the record below documents what was studied.
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