Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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COMPLETED
NA
70 participants
INTERVENTIONAL
2025-09-01
2025-11-24
Brief Summary
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This study aims to answer are:
Does intraoperative tidal volume influence operative time and surgical efficiency during fURS?
Does tidal volume affect laser energy use, lasing efficiency, stone-free rates, and complication rates (infection or bleeding)?
The investigators will compare two groups based on tidal volume recorded during anaesthesia:
Group 1: Low tidal volume (\< 500 mL)
Group 2: Standard tidal volume (≥ 500 mL)
to determine whether tidal volume differences impact surgical performance and postoperative outcomes.
Participants will:
Undergo fURS performed under general anaesthesia with standard ASA monitoring, including ETCO₂ and TOF monitoring.
Have their respiratory parameters (tidal volume, peak airway pressure, PEEP, respiratory rate, ETCO₂) and surgical data (operative time, laser settings, fluoroscopy use, stone-free status) recorded during and after surgery.
Detailed Description
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Conditions
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Study Design
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NON_RANDOMIZED
PARALLEL
TREATMENT
NONE
Study Groups
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Low Tidal Volume
Flexible Ureteroscopy
Between October 2025 and December 2025, Patients who underwent fURS surgery in our clinic, with the surgical indication determined according to the EAU guidelines, were included in the study. Patients over 18 years of age with unilateral, single stones located in the upper or middle calyx or in the renal pelvis were included in the study. Patients with chronic obstructive pulmonary disease, pregnancy, a history of abdominal, retroperitoneal, or thoracic surgery, kidney anomalies, or stones located in the lower calyx were excluded.
Normal Tidal Volume
Flexible Ureteroscopy
Between October 2025 and December 2025, Patients who underwent fURS surgery in our clinic, with the surgical indication determined according to the EAU guidelines, were included in the study. Patients over 18 years of age with unilateral, single stones located in the upper or middle calyx or in the renal pelvis were included in the study. Patients with chronic obstructive pulmonary disease, pregnancy, a history of abdominal, retroperitoneal, or thoracic surgery, kidney anomalies, or stones located in the lower calyx were excluded.
Interventions
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Flexible Ureteroscopy
Between October 2025 and December 2025, Patients who underwent fURS surgery in our clinic, with the surgical indication determined according to the EAU guidelines, were included in the study. Patients over 18 years of age with unilateral, single stones located in the upper or middle calyx or in the renal pelvis were included in the study. Patients with chronic obstructive pulmonary disease, pregnancy, a history of abdominal, retroperitoneal, or thoracic surgery, kidney anomalies, or stones located in the lower calyx were excluded.
Eligibility Criteria
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Inclusion Criteria
Unilateral, single kidney stones located in the upper or middle calyx or in the renal pelvis
Exclusion Criteria
Pregnancy
History of abdominal, retroperitoneal, or thoracic surgery
Kidney anomalies
Stones located in the lower calyx
18 Years
ALL
Yes
Sponsors
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Tarik Emre Sener
OTHER
Responsible Party
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Tarik Emre Sener
Assistant Professor
Locations
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Marmara University School of Medicine Urology Department
Istanbul, Pendik, Turkey (Türkiye)
Countries
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Other Identifiers
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MAR.UAD.0026
Identifier Type: -
Identifier Source: org_study_id