Which Patinets Benefit More From Percutaneous Nephrolithotomy? A Location-Based Comparative Analysis of PCNL and RIRS for 1-2 cm Renal Stones
Descripción general del estudio
Estado
Intervención / Tratamiento
Descripción detallada
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.
Tipo de estudio
Inscripción (Actual)
Fase
- No aplica
Criterios de participación
Criterio de elegibilidad
Edades elegibles para estudiar
- Adulto
- Adulto Mayor
Acepta Voluntarios Saludables
Descripción
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
Plan de estudios
¿Cómo está diseñado el estudio?
Detalles de diseño
- Propósito principal: Tratamiento
- Asignación: Aleatorizado
- Modelo Intervencionista: Asignación paralela
- Enmascaramiento: Ninguno (etiqueta abierta)
Armas e Intervenciones
Grupo de participantes/brazo |
Intervención / Tratamiento |
|---|---|
|
Experimental: 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.
|
|
Comparador activo: 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.
|
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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¿Qué mide el estudio?
Medidas de resultado primarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
|---|---|---|
|
Stone-Free Rate (SFR)
Periodo de tiempo: 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
|
Medidas de resultado secundarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
|---|---|---|
|
Total Operative Duration
Periodo de tiempo: 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
Periodo de tiempo: Within 24 hours postoperatively.
|
The difference between preoperative and postoperative hemoglobin levels to assess blood loss.
|
Within 24 hours postoperatively.
|
|
Postoperative Complications
Periodo de tiempo: From surgery up to 30 days postoperatively.
|
The frequency and severity of complications classified according to the Clavien-Dindo classification system
|
From surgery up to 30 days postoperatively.
|
|
Length of Hospital Stay
Periodo de tiempo: 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).
|
Colaboradores e Investigadores
Patrocinador
Fechas de registro del estudio
Fechas importantes del estudio
Inicio del estudio (Actual)
Finalización primaria (Actual)
Finalización del estudio (Actual)
Fechas de registro del estudio
Enviado por primera vez
Primero enviado que cumplió con los criterios de control de calidad
Publicado por primera vez (Actual)
Actualizaciones de registros de estudio
Última actualización publicada (Actual)
Última actualización enviada que cumplió con los criterios de control de calidad
Última verificación
Más información
Términos relacionados con este estudio
Palabras clave
Términos MeSH relevantes adicionales
Otros números de identificación del estudio
- 12/14-06
Información sobre medicamentos y dispositivos, documentos del estudio
Estudia un producto farmacéutico regulado por la FDA de EE. UU.
Estudia un producto de dispositivo regulado por la FDA de EE. UU.
Esta información se obtuvo directamente del sitio web clinicaltrials.gov sin cambios. Si tiene alguna solicitud para cambiar, eliminar o actualizar los detalles de su estudio, comuníquese con register@clinicaltrials.gov. Tan pronto como se implemente un cambio en clinicaltrials.gov, también se actualizará automáticamente en nuestro sitio web. .
Ensayos clínicos sobre Percutaneous Nephrolithotomy (PCNL)
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Mahidol UniversityAún no reclutandoProblemas de seguridad | Cirugía-Complicaciones | Nefrolitiasis Cálculo cuerno de ciervoTailandia
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The First Affiliated Hospital of Guangzhou Medical...Massachusetts General Hospital; University College London Hospitals; University... y otros colaboradoresDesconocidoCirugía | Piedra, Riñón | Litiasis renal
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Foundation EndourologyThe International Alliance of UrolithiasisReclutamiento
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Assiut UniversityAún no reclutandoCálculos de cuerno de ciervo
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The Cleveland ClinicMassachusetts General Hospital; University of British Columbia; Columbia University y otros colaboradoresTerminadoEnfermedades Renales | Cálculos renales | Urolitiasis | Cálculos ureterales | Cálculos renalesEstados Unidos
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Tianjin Medical University Second HospitalThe First Affiliated Hospital with Nanjing Medical University; Peking University... y otros colaboradoresAún no reclutando
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University of British ColumbiaReclutamiento
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Tanta UniversityTerminadoPCNL | Complicaciones infecciosas | Cálculos renalesEgipto
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Lady Reading Hospital, PakistanKhyber Teaching HospitalTerminadoNefrolitiasis | Cálculos renales | Nefrolitiasis pediátricaPakistán
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Hayat Abad Medical Complex, Peshawar.TerminadoPiedras renales | Urolitiasis, Oxalato De CalcioPakistán