Criteria for DJ Stent Omission Following Retrograde Intrarenal Surgery Using Flexible and Navigable Suction Sheath: A Prospective Cohort Study

Retrograde intrarenal surgery is widely used for the treatment of upper urinary tract stones. Traditionally, ureteral stents are placed postoperatively to prevent complications such as pain and stone obstruction. On the other hand, it leads to patient discomfort and additional procedures or readmission .This study aims to evaluate whether routine postoperative DJ stenting can be safely omitted following RIRS in appropriately selected patients, without increasing postoperative complications or the need for additional interventions.

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Key information

Conditions

Renal Stones Female Urogenital Diseases Female Urogenital Diseases and Pregnancy Complications Flexible Ureteroscopy Kidney Diseases Male Urogenital Diseases Nephrolithiasis Urogenital Diseases Urolithiasis Urologic Diseases

Age range

18 year and older

Sex eligibility

All sexes

Study type

Observational

Primary location

Ain Shams University Hospital

Cairo, Cairo Governorate, 11566, Egypt

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

All patients above the age of 18 years of either sex who presented to the Urology clinic in our university hospitals with upper urinary tract stones with size up to 2.5 cm.

Exclusion criteria

Previous open renal surgery
patients with previous renal trauma
Patients with renal anomalies
Patients with untreated or active Urinary tract infection
patients with Solitary kidney
patients with renal insufficiency

Treatment and study plan

flexible ureteroscopy using flexible and navigable suction sheath

Procedure

This study evaluates the safety of omitting routine postoperative DJ stenting after RIRS in uncomplicated cases, while reserving stenting for patients with predefined risk factors such as ureteric injury or significant residual stones. This selective approach aims to reduce stent-related discomfort and unnecessary procedures without increasing postoperative complications.

Primary outcomes

Need for readmission for increased body temperature

Time frame: one month

Sponsors and collaborators

Lead sponsor

Ain Shams University

Other

Registry information

Important dates

Study start: 2025
Primary completion: 2026
Study completion: 2026
First posted: Sep 17, 2026
Registry last updated: Sep 17, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

Published trials that share one or more normalized conditions with this study.

Completed