A Study of the optimal length of ureteral stent extraction string is not drawn into the urethra after transurethral ureterolithotomy

A Study of the optimal length of ureteral stent extraction string is not drawn into the urethra after transurethral ureterolithotomy - OLSES study

Status

Active, not recruiting

Phases

Phase 2

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000016214

Enrollment

Registered

2015-01-15

Start date

2015-01-15

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Renal ureteral calculi

Interventions

I rermove ureteral stent using ureteral stent extraction string.

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Patients who underwent TUL for renal and urinary tract stones. Patients who can walk independence (Performance status: PS<=1).

Exclusion criteria

Exclusion criteria: Communicate difficult cases. If the doctor has determined ineligible during surgery. PS>=2 The cases an attending physician determined ineligible.

Design outcomes

Primary

Measure	Time frame
The optimal length of ureteral stent extraction string is not drawn into the urethra.	—

Secondary

Measure	Time frame
Urination QOL Complications	—

Countries

Japan

Contacts

Public ContactTakaaki Inoue

Kansai Medical University Takii Hospital Urology

taguchim@takii.kmu.ac.jp06-6992-1001(42206)

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026