Which Patinets Benefit More From Percutaneous Nephrolithotomy? A Location-Based Comparative Analysis of PCNL and RIRS for 1-2 cm Renal Stones
研究概览
地位
详细说明
n this prospective randomized controlled trial, 110 adult patients diagnosed with a single non-staghorn renal stone measuring 10-20 mm were enrolled. The study was conducted at Kırıkkale High Specialization Hospital between the specified study dates. Participants were randomized in a 1:1 ratio into two treatment arms: Percutaneous Nephrolithotomy (PCNL) and Retrograde Intrarenal Surgery (RIRS). Randomization was implemented using a computer-generated sequence to ensure unbiased allocation.
The primary objective is to compare the stone-free rates (SFR) between the two surgical techniques at the 3-month postoperative mark, as confirmed by non-contrast computed tomography. A secondary and key focus of the study is the impact of stone localization (upper, middle, and lower calyx) on the success of each procedure. Additional outcomes evaluated include total operative time, hospital stay duration, hemoglobin level changes, and postoperative complication rates according to the Clavien-Dindo classification system. The results aim to provide a location-based surgical selection framework for mid-sized renal stones.
研究类型
注册 (实际的)
阶段
- 不适用
参与标准
资格标准
适合学习的年龄
- 成人
- 年长者
接受健康志愿者
描述
Inclusion Criteria:
Patients aged 18 years or older. Presence of a single, non-staghorn radiopaque renal stone measuring 10-20 mm in diameter.
Stone location in the upper, middle, or lower renal calyx. Patients who provided written informed consent.
Exclusion Criteria:
Patients with untreated urinary tract infections or urosepsis. Patients with uncorrected bleeding disorders or receiving anticoagulant therapy.
Presence of severe skeletal deformities preventing surgical positioning. Patients with morbid obesity (BMI > 40 kg/m²). Presence of anatomical abnormalities (e.g., horseshoe kidney, ectopic kidney). Pregnancy. Multiple renal stones or stones larger than 20 mm
学习计划
研究是如何设计的？
设计细节
- 主要用途：治疗
- 分配：随机化
- 介入模型：并行分配
- 屏蔽：无（打开标签）
武器和干预
参与者组/臂 |
干预/治疗 |
|---|---|
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实验性的：PCNL Group
Patients in this group underwent Percutaneous Nephrolithotomy (PCNL) for the treatment of renal stones measuring 10-20 mm.
The procedure was performed in the prone or lithotomy position under general anesthesia.
|
A standard percutaneous approach was used.
Under general anesthesia, a nephrostomy tract was established, and the stone was fragmented using a pneumatic or ultrasonic lithotripter.
|
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有源比较器：RIRS Group
Patients in this group underwent Retrograde Intrarenal Surgery (RIRS) using a flexible ureterorenoscope and laser lithotripsy for the treatment of renal stones measuring 10-20 mm.
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The procedure was performed using a flexible ureterorenoscope.
Stones were fragmented using a Holmium:YAG laser fiber after reaching the renal pelvis and calyces retrogradely.
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研究衡量的是什么？
主要结果指标
结果测量 |
措施说明 |
大体时间 |
|---|---|---|
|
Stone-Free Rate (SFR)
大体时间：3 months postoperatively
|
The percentage of patients who are completely free of stones or have only clinically insignificant residual fragments (less than 3 mm).
This will be evaluated using non-contrast computed tomography (NCCT)
|
3 months postoperatively
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次要结果测量
结果测量 |
措施说明 |
大体时间 |
|---|---|---|
|
Total Operative Duration
大体时间：During the surgical procedure (intraoperative)
|
The time from the initial incision or insertion of the endoscope until the completion of the procedure and dressing, measured in minutes
|
During the surgical procedure (intraoperative)
|
|
Change in Hemoglobin Levels
大体时间：Within 24 hours postoperatively.
|
The difference between preoperative and postoperative hemoglobin levels to assess blood loss.
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Within 24 hours postoperatively.
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Postoperative Complications
大体时间：From surgery up to 30 days postoperatively.
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The frequency and severity of complications classified according to the Clavien-Dindo classification system
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From surgery up to 30 days postoperatively.
|
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Length of Hospital Stay
大体时间：From the day of surgery until hospital discharge (typically 1-3 days).
|
The total number of days the patient remained in the hospital following the procedure.
|
From the day of surgery until hospital discharge (typically 1-3 days).
|
合作者和调查者
研究记录日期
研究主要日期
学习开始 (实际的)
初级完成 (实际的)
研究完成 (实际的)
研究注册日期
首次提交
首先提交符合 QC 标准的
首次发布 (实际的)
研究记录更新
最后更新发布 (实际的)
上次提交的符合 QC 标准的更新
最后验证
更多信息
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