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Exit Strategy After Percutaneous Nephrolithotomy: Large or Small Bore Tube?

Exit Strategy After Percutaneous Nephrolithotomy: Large or Small Bore Tube? Randomised Controlled Trial

Status
UNKNOWN
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04153474
Enrollment
220
Registered
2019-11-06
Start date
2019-05-01
Completion date
2020-02-01
Last updated
2019-11-06

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

Conditions

Nephrolithotomy, Nephrostomy Tube (NT), Pain, Percutaneous Nephrolithotomy (PNL), Urolithiasis

Keywords

Percutaneous nephrolithotomy (PNL), Nephrostomy tube (NT), Pain, Patient satisfaction

Brief summary

Regarding to the distribution of nephrostomy tube (NT) size usage by country. There was a clear distinction between countries that used solely the small bore (SB) NT (Chile and Australia) and those that used solely the large bore (LB) NT (Czech Republic and Japan). There is also a trend toward SB NT in North America (\ 75% in USA and Canada) and toward LB NT in South America (\ 80% in Argentina and Mexico). In Europe the trend is equal (\ 50% in Germany, France, Greece and UK). Based on previous data and in view of conflicting data about postoperative complication including extravasation, bleeding and hemoglobin change and pain between previous studies, we will conduct this randomised trial comparing SB and LB NT following PNL. Our aim to evaluate the safety of small versus large bore NT reporting complications using the Clavien-Dindo system with categorisation of PNL-specific complications

Interventions

PROCEDURElarge-bore nephrostomy tube (LBNT)

large-bore 22 french nephrostomy tube (LBNT)

PROCEDUREsmall-bore nephrostomy tube (SBNT)

small-bore 14 french nephrostomy tube (SBNT)

Sponsors

Mansoura University
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

1. Staghorn calculi 2. Renal pelvis stones =\>2 cm 3. Lower pole stones= \>1.5 cm 4. upper ureteral calculi =\>1.5 cm 5. SWL-resistant stones

Exclusion criteria

1. Age \<18 years or Pregnancy 2. Tubeless PNL 3. Need for 3 percutaneous tracts intraoperative 4. Morbid obesity (BMI \>40) 5. Refuse to complete study requirements 6. Tumour in the presumptive access tract area or Potential malignant kidney tumour

Design outcomes

Primary

MeasureTime frameDescription
Rate of hemoglobin reduction difference between groups8 monthsmeasured in gram/liter

Secondary

MeasureTime frameDescription
postoperative patient satisfaction8 monthsmeasured by The Freiburg Index of Patient Satisfaction (FIPS score) from 1 to 6
postoperative pain score8 monthsAssessed by Visual Analogue Scale (VAS) points from 0 to 10
overall postoperative complication8 monthsassesed by Clavien-Dindo system

Countries

Egypt

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026