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CLamp vs Off Clamp Kidney During Partial Nephrectomy

Prospective Randomized Trial Comparing Clamp Versus Clampless Robot Assisted Partial Nephrectomy

Status
UNKNOWN
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02287987
Acronym
CLOCK
Enrollment
200
Registered
2014-11-11
Start date
2014-10-31
Completion date
2016-10-31
Last updated
2016-01-05

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

Conditions

Glomerular Filtration Rate, Kidney Neoplasm, Nephrectomy

Keywords

Renal function, Off-clamp, Partial nephrectomy, Robotic, Hylar clamping

Brief summary

Prospective, randomized trial comparing surgical, functional and oncological outcomes between clamp and clamp-less robot assisted partial nephrectomy.

Interventions

PROCEDUREClamp Robotic partial nephrectomy

Renal artery clamping during partial nephrectomy

PROCEDUREClampless Robotic partial nephrectomy

Robotic partial nephrectomy without renal artery clamping

Sponsors

Azienda Socio Sanitaria Territoriale degli Spedali Civili di Brescia
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 80 Years
Healthy volunteers
No

Inclusion criteria

* normal coagulation trim * pre operative Glomerular Filtration Rate (GFR) \> 60 ml/min * healty contralateral kidney * low (4-6) or intermediate (7-10) RENAL score * availability of Da Vinci Robotic System

Exclusion criteria

* altered coagulation trim * pre operative Glomerular Filtration Rate (GFR) \< 60 ml/min * anatomic or functional solitary kidney * RENAL score \>10

Design outcomes

Primary

MeasureTime frameDescription
Glomerular Filtration Rate (GFR) variation3-6 monthsdifference between pre and post operative Glomerular Filtration Rate (GFR)

Secondary

MeasureTime frameDescription
Feasibility of clampless robotic partial nephrectomyDuration of the surgical procedurenumber of cases shifted from clampless to clamping procedure; time of suture of the renal parenchyma; overall operative time.
Morbidity of clampless robotic partial nephrectomy90 daysEstimated blood loss; pre/post operative variation of hemoglobin value; overall complications rate; bleeding complications rate
Oncological safety of clampless robotic partial nephrectomy15 dayspositive surgical margins rate

Countries

Italy

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Mar 2, 2026