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Completed

NCT Number: NCT07052188

Effect of Preop Stent Duration on SFR and Secondary Intervention in RIRS

This study aims to evaluate how placing a stent before surgery (preoperative stenting or passive dilation) affects the success rate of retrograde intrarenal surgery (RIRS), which is performed for kidney stones. Specifically, we will examine whether stenting improves the chance of becoming stone-free after surgery and reduces the need for a second surgical procedure.

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Key information

Conditions

Stone, Urinary Calculi Female Urogenital Diseases Female Urogenital Diseases and Pregnancy Complications Kidney Calculi Kidney Diseases Male Urogenital Diseases Nephrolithiasis Pathological Conditions, Anatomical Pathological Conditions, Signs and Symptoms Stone, Kidney Urinary Calculi Urogenital Diseases Urolithiasis Urologic Diseases

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Adıyaman University

Adıyaman, Turkey (Türkiye)

Who can participate

Healthy volunteers accepted: No

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

Inclusion criteria

  • Patients over 18 years of age with an indication for RIRS (Retrograde Intrarenal Surgery)

Exclusion criteria

  • Patients under 18 or over 65 years of age
  • Patients who cannot be followed up in the postoperative period

Treatment and study plan

without any preoperative stenting

Procedure

Patients will have RIRS without any preoperative stenting.

(DJ) stent placed with sedation and undergo RIRS within 2-4 weeks

Procedure

Patients will have a double-J (DJ) stent placed with sedation and undergo RIRS within 2-4 weeks.

Patients will have a DJ stent placed with sedation and undergo RIRS within 4-6 weeks.

Procedure

Patients will have a DJ stent placed with sedation and undergo RIRS within 4-6 weeks

Primary outcomes

  1. Number of Participants with stone-free

    Time frame: in the first month after surgery

  2. Number of Participants with additional surgery was needed

    Time frame: in the first month after surgery

Secondary outcomes

  1. Number of Participants with postoperative complications

    Time frame: within 1 month after surgery

Sponsors and collaborators

Lead sponsor

Bedreddin Kalyenci

Other

Registry information

Official study title

Evaluation of the Effect of Preoperative Stenting Duration on Stone-Free Rates and the Need for Secondary Surgical Intervention in Retrograde Intrarenal Surgery

Important dates

Study start
2025
Primary completion
2026
Study completion
2026
First posted
Jul 4, 2025
Registry last updated
May 13, 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.

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