Bipolar Transurethral Enucleation (BipolEP) vs Bipolar Transurethral Resection of the Prostate
Primary Purpose
Benign Prostatic Hyperplasia, Bladder Outlet Obstruction
Status
Unknown status
Phase
Not Applicable
Locations
International
Study Type
Interventional
Intervention
BipolEP
bipolarTURP
Sponsored by
About this trial
This is an interventional treatment trial for Benign Prostatic Hyperplasia focused on measuring BipolEP, TURP
Eligibility Criteria
Inclusion Criteria:
- Refractory LUTS (lower urinary tract symptoms) secondary to BPH benign prostate hyperplasia)
- I-PSS greater than 15
- QOL score 3 or greater
- Qmax less than 15 ml per second or patients with acute urinary retention secondary to BPH in whom trial of voiding failed
- Prostate size on preoperative TRUS of 40 to 150 ml
Exclusion Criteria:
- Patients with neurological disorder
- Active urinary tract infection, active bladder or prostate cancer
Sites / Locations
- Universitätsklinik für Urologie und Andrologie, Salzburger LandesklinikenRecruiting
- Urologische Klinik Spital Thurgau, Kantonsspital Frauenfeld
Arms of the Study
Arm 1
Arm 2
Arm Type
Experimental
Active Comparator
Arm Label
BipolEP
TURP
Arm Description
includes all patients undergoing BipolEP surgery
includes all patients undergoing TURP surgery
Outcomes
Primary Outcome Measures
Long-term outcome - Change in IPSS (Difference in IPSS before and 12 months after surgery)
The long-term outcome will be measured by comparing the change in IPSS (International Prostate Symptom Score) before and 12 months after surgery. The IPSS is based on the answers to seven questions concerning urinary symptoms (Incomplete emptying, Frequency, Intermittency, Urgency, Weak Stream, Straining, Nocturia) and one question concerning quality of life. Each question concerning urinary symptoms allows the patient to choose one out of six answers indicating increasing severity of the particular symptom. The answers are assigned points from 0 to 5. The total score can therefore range from 0 to 35 (asymptomatic to very symptomatic) Question eight refers to the patient's perceived quality of life.
Secondary Outcome Measures
Efficiency of surgical intervention (tissue resected intraoperatively per minute)
In order to asses the efficiency of the surgical intervention, the amount of prostate tissue (grams) surgically removed per minute will be recorded. The investigators do want to see whether prostate tissue can be resected faster by using any of the two methods.
Full Information
NCT ID
NCT03503721
First Posted
January 17, 2018
Last Updated
April 19, 2018
Sponsor
Salzburger Landeskliniken
1. Study Identification
Unique Protocol Identification Number
NCT03503721
Brief Title
Bipolar Transurethral Enucleation (BipolEP) vs Bipolar Transurethral Resection of the Prostate
Official Title
Bipolar Transurethral Enucleation (BipolEP) vs Bipolar Transurethral Resection of the Prostate: A Prospective Interventional Multi-center Randomized Controlled Trial
Study Type
Interventional
2. Study Status
Record Verification Date
April 2018
Overall Recruitment Status
Unknown status
Study Start Date
January 18, 2018 (Actual)
Primary Completion Date
January 18, 2021 (Anticipated)
Study Completion Date
June 18, 2021 (Anticipated)
3. Sponsor/Collaborators
Responsible Party, by Official Title
Principal Investigator
Name of the Sponsor
Salzburger Landeskliniken
4. Oversight
Studies a U.S. FDA-regulated Drug Product
No
Studies a U.S. FDA-regulated Device Product
No
5. Study Description
Brief Summary
The aim of this study is to compare two different surgical methods for treating benign prostatic obstruction (BPO).
The investigators are going to compare the risks and benefits of bipolar transurethral resection of the prostate (TURP) and bipolar transurethral enucleation of the prostate (BipolEP). Furthermore, the investigators are going to compare the amount of tissue resected per minute, in order to assess the efficiency of each surgical method.
It is a prospective, interventional, multi-centre (2 centres total), randomized trial.
Approximately 84 patients will be included
Detailed Description
Overview:
The aim of this study is to compare two different surgical methods for treating benign prostatic obstruction (BPO).
The investigators are going to compare the risks and benefits of bipolar transurethral resection of the prostate (TURP) and bipolar transurethral enucleation of the prostate (BipolEP). Furthermore, the investigators are going to compare the amount of tissue resected per minute, in order to assess the efficiency of each surgical method.
All patients will be followed up for 12 months. All the examinations used to assess the risks and benefits of BipolEP and TURP are listed below:
Dysuria visual analogue scale (at 1 month)
I-PSS (international prostate symptom score), QOL (quality of life), Qmax (maximum flow rate of urine) and PVR (post void residual bladder volume) before surgery and at 1, 4 and 12 months
IIEF-15 (international index of erectile function) and PSA (prostate specific antigen) (before surgery and at 4 and 12 months)
TRUS (transrectal ultrasonography) for prostate size before surgery and at 4 months
It is a prospective, interventional, multi-centre (2 centres total), randomized trial.
Approximately 84 patients will be included in this study. Each patient will be randomly assigned either to the BipolEP or to the TURP study arm. For the allocation of treatment to subjects the minimization method will be used (Strata: 1. prostate 60 to 80 ml / more than 80 ml; 2. catheterized / non-catheterized). The minimization procedure will be applied centrally (by the coordinating centre).
Statistical analysis plan :
Concept
The study is designed as a comparison of two kinds of treatment:
Group BipolEP: Bipolar transurethral enucleation of the prostate Group TURP: Bipolar transurethral resection of the prostate
Two primary endpoints are chosen:
: IPSS after 12 month [-]
: Tissue resection [g/min]
The use of a gate keeping approach makes it unnecessary to adjust the type I error. Primary endpoint (1) will be investigated by a non-inferiority approach (type I error = 5% one-sided), primary endpoint (2) by a superiority approach (type I error = 2.5% one-sided).
Hypotheses:
: H-01: Compared to group TURP, IPSS after 12months in group BipolEP is higher (non-inferiority range = 3) H-11: Compared to group TURP, IPSS after 12months in group BipolEP is not higher (non-inferiority range = 3)
: H-02: Compared to group TURP, tissue resection in group BipolEP is not increased H-12: Compared to group TURP, tissue resection in group BipolEP is increased
Statistical Methods:
Group Comparisons:
Primary Endpoint (1):
Data (if appropriate, in logarithmised version) will be checked for normal distribution (Kolmogorov-Smirnov with Lilliefors significance correction, type I error = 10%). Hypotheses (H-01, H-11) will be investigated either by a parametric or by a non-parametric one-sided test of equivalence (equivalence range one-sided = 3; type I error = 5% one-sided).
Primary Endpoint (2):
Data (if appropriate, in logarithmised version) will be checked for normal distribution (Kolmogorov-Smirnov with Lilliefors significance correction, type I error = 10%). Hypotheses will be investigated either by the t-test for independent samples or by the Mann-Whitney U-test (type I error = 2.5% one-sided). Hypotheses (H-02, H-12) will be tested only if H-01 hypothesis is rejected.
Further Variables:
All other variables will be analysed by usual parametric and non-parametric tests for univariate comparisons of independent samples.
Two-sided 95% confidence intervals:
For selected variables, two-sided 95% confidence intervals will be calculated.
Type I error adjustment:
No adjustment for the type I error will be made. Therefore - apart from hypotheses testing - the results of inferential statistics will be descriptive only.
Sample size assessment:
The following scenario was used for the sample size estimation concerning primary endpoint (1):
Non-inferiority range = 3
Type I error = 5% one-sided
Type II error = 10%
IPSS after 12 months in both groups (Mw ± SD) = 4 ± 4
n (group BipolEP) / n (group TURP) = 1 / 1
Parametric test The result of the sample size estimation is a requirement of 31 cases per group. Assuming a drop-out rate of 20% and considering the possible need for a non-parametric test a total of 84 inclusions (n=42 / group) are chosen as the sample size of the study.
Data management and quality assurance:
In order to assure that the collected data are accurate, consistent, complete and reliable, the primary investigator will review all the CRFs. If any data is missing, incomplete or inaccurate, the medical record of the patient will be used to identify the missing data. If the data notated in the medical record is missing or implausible, the data will be recorded in the database as missing value. In the intention to treat population and only for the two primary endpoints, the missing values will be replaced according to the worst-case principle (use of the worst assessed value in the study).
After all the CRFs have been checked for completeness and accuracy, the data will be entered in a special database. A second person, involved in the study, will check all the data entered. Once the database is complete and has been checked, it will be locked, marking the beginning of the statistical analysis. The data will be analyzed by a statistician.
The investigator will keep all source documents, CRFs and trial documentation. The investigator will store all study documents and all mandatory documents linked to the study including the identity of all patients (enough information to link the records, eg, the CRF and hospital records), all original signed informed consent forms and copies of all CRD (clinically relevant documents) for a minimum of 5 years. All study-linked documents will be stored under strict security and will be available for review for authorized personnel only.
Adverse Event:
The Investigator and designated study personnel will monitor each subject for adverse events during the study. All adverse events reported between consent and final follow-up will be recorded in the case report form (CRF). The investigator or designee will ask the subject non-leading questions in an effort to detect adverse events. The intra- and postoperative adverse events will be quantified according to the Clavien-Dindo classification. In case of any adverse event or change of treatment, the primary investigator has to be informed.
6. Conditions and Keywords
Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Benign Prostatic Hyperplasia, Bladder Outlet Obstruction
Keywords
BipolEP, TURP
7. Study Design
Primary Purpose
Treatment
Study Phase
Not Applicable
Interventional Study Model
Parallel Assignment
Masking
None (Open Label)
Allocation
Randomized
Enrollment
84 (Anticipated)
8. Arms, Groups, and Interventions
Arm Title
BipolEP
Arm Type
Experimental
Arm Description
includes all patients undergoing BipolEP surgery
Arm Title
TURP
Arm Type
Active Comparator
Arm Description
includes all patients undergoing TURP surgery
Intervention Type
Procedure
Intervention Name(s)
BipolEP
Intervention Description
the prostate will be transurethrally enucleated using a bipolar current
Intervention Type
Procedure
Intervention Name(s)
bipolarTURP
Intervention Description
the prostate will transurethrally resected using a bipolar current
Primary Outcome Measure Information:
Title
Long-term outcome - Change in IPSS (Difference in IPSS before and 12 months after surgery)
Description
The long-term outcome will be measured by comparing the change in IPSS (International Prostate Symptom Score) before and 12 months after surgery. The IPSS is based on the answers to seven questions concerning urinary symptoms (Incomplete emptying, Frequency, Intermittency, Urgency, Weak Stream, Straining, Nocturia) and one question concerning quality of life. Each question concerning urinary symptoms allows the patient to choose one out of six answers indicating increasing severity of the particular symptom. The answers are assigned points from 0 to 5. The total score can therefore range from 0 to 35 (asymptomatic to very symptomatic) Question eight refers to the patient's perceived quality of life.
Time Frame
Start: before the surgery End: 356 days after surgery
Secondary Outcome Measure Information:
Title
Efficiency of surgical intervention (tissue resected intraoperatively per minute)
Description
In order to asses the efficiency of the surgical intervention, the amount of prostate tissue (grams) surgically removed per minute will be recorded. The investigators do want to see whether prostate tissue can be resected faster by using any of the two methods.
Time Frame
Intraoperative
Other Pre-specified Outcome Measures:
Title
Safety of surgical intervention (comparison of adverse events using the Clavien Dindo-Classification)
Description
All possible adverse events after applying BipolEP or TURP will be assessed using the Clavien-Dindo score. The investigators do want to find out whether the surgery can be performed safer by using BipolEP or TURP.
Time Frame
Start: start of the surgery End: 356 days after surgery
10. Eligibility
Sex
Male
Minimum Age & Unit of Time
50 Years
Accepts Healthy Volunteers
No
Eligibility Criteria
Inclusion Criteria:
Refractory LUTS (lower urinary tract symptoms) secondary to BPH benign prostate hyperplasia)
I-PSS greater than 15
QOL score 3 or greater
Qmax less than 15 ml per second or patients with acute urinary retention secondary to BPH in whom trial of voiding failed
Prostate size on preoperative TRUS of 40 to 150 ml
Exclusion Criteria:
Patients with neurological disorder
Active urinary tract infection, active bladder or prostate cancer
Central Contact Person:
First Name & Middle Initial & Last Name or Official Title & Degree
Maximilian Pallauf, MD
Phone
+435725557212
Email
m.pallauf@salk.at
First Name & Middle Initial & Last Name or Official Title & Degree
Thomas Kunit, MD
Phone
+435725557439
Email
t.kunit@salk.at
Overall Study Officials:
First Name & Middle Initial & Last Name & Degree
Thomas Kunit, MD
Organizational Affiliation
Vice Chairman
Official's Role
Principal Investigator
Facility Information:
Facility Name
Universitätsklinik für Urologie und Andrologie, Salzburger Landeskliniken
City
Salzburg
ZIP/Postal Code
5020
Country
Austria
Individual Site Status
Recruiting
Facility Contact:
First Name & Middle Initial & Last Name & Degree
Maximilian Pallauf, MD
Phone
+435725557212
Email
m.pallauf@salk.at
First Name & Middle Initial & Last Name & Degree
Thomas Kunit, MD
Phone
+435725557439
Email
t.kunit@salk.at
Facility Name
Urologische Klinik Spital Thurgau, Kantonsspital Frauenfeld
City
Frauenfeld
State/Province
Thurgau
ZIP/Postal Code
8500
Country
Switzerland
Individual Site Status
Not yet recruiting
Facility Contact:
First Name & Middle Initial & Last Name & Degree
Thomas RW Herrmann, MD
12. IPD Sharing Statement
Learn more about this trial
Bipolar Transurethral Enucleation (BipolEP) vs Bipolar Transurethral Resection of the Prostate
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