CClinicalTrials.gg
CompletedNCT04098809Updated Dec 26, 2019Results posted

Impact of Catheter Size on Peri-Operative Pain After Robotic Assisted Laparoscopic Prostatectomy

An interventional study of 16 French urinary catheter and 20 French urinary catheter in Prostate Cancer, sponsored by Benaroya Research Institute. Completed at 1 site in United States. Open to male participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2019-12-26.

Sponsored by Benaroya Research Institute · Not applicable, Interventional, and Other

From the registry’s dates

  • Registered 1 year 10 months after the study started (first participant enrolled Nov 2017, registered Sep 2019).
Phase
Not applicable
Study type
Interventional
Enrollment
52
Allocation
Randomized
Ages
18 Years and older
Sex
Male
01

Study summary

This study is designed to assess the effect of catheter size on postoperative catheter pain, urinary continence, urinary flow rates, post void residuals, International Prostate Symptom Scores (IPSS), and Quality of Life (QoL) score, as well as long term complications after robotic assisted laparoscopic prostatectomy.

Read the detailed description

Subjects identified to receive a robotic assisted laparoscopic prostatectomy.were randomized to either a 16 French or 20 French catheter at the completion of the prostatectomy. All prostatectomies were performed by one of three surgeons at the investigator's institution. Preoperative demographics and operative data were recorded for each group. Catheters remained in place for 7-14 days. Subjects were asked on postoperative day 7 to report their catheter-related pain and amount of opioid medication used. Urinary symptoms and quality of life scores and pads per day were recorded at 6 weeks and 12 weeks post-operatively.

02

Conditions studied

  • Prostate Cancer

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03

In context

Prostatic Neoplasms

6,370 studies on the registry are indexed under Prostatic Neoplasms; 1,400 are open to participants now.

This study's enrollment of 52 is below the median of 58 across 4,822 interventional studies indexed under Prostatic Neoplasms.

Browse Prostatic Neoplasms studies →

Lead sponsor

Benaroya Research Institute is the lead sponsor of 41 studies on the registry; 6 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
Male
Accepts healthy volunteers
No

Inclusion criteria

  • Identified as candidate for robotic assisted laparoscopic prostatectomy

Exclusion criteria

Exclusion Criteria:

  • Having filled a prescription for opioid medication in last 2 months.
  • Known latex allergy
  • Known pre-operatively that catheter placement will exceed 14 days
  • History of pelvic radiation
  • Significant deviation from normal operative protocol
05

Study design

Phase
Not applicable
Primary purpose
Other
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Participant)
Enrollment
52 participants (actual)

Study arms

  • Active comparator
    Catheter 16 French

    16 French urinary catheter

    Device: 16 French urinary catheter

  • Active comparator
    Catheter 20 French

    20 French urinary catheter

    Device: 20 French urinary catheter

Interventions

  • Device16 French urinary catheter

    16 French urinary catheter

  • Device20 French urinary catheter

    20 French urinary catheter

06

What researchers measure

Primary outcomes

  1. Catheter Related Pain: Visual Analog Score Rating

    Catheter related pain was measured using a visual analog score rating mean post-operative pain on a scale from 1 (no pain) to 10 (worst possible pain). The lower the score the better the outcome.

    Time frame: post-op day 5-7

Secondary outcomes

  1. Urinary Symptoms

    The International Prostate Symptom Score (I-PSS) is based on the answers to seven questions concerning urinary symptoms 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).The lower the score the better the outcome.

    Time frame: week 6

  2. Quality of Life Score

    Question eight of IPSS refers to the patient's perceived quality of life. The range is from delighted with a score of zero to terrible with a score of 6. The lower the score the better the outcome.

    Time frame: Week 6

  3. Urinary Symptoms

    The International Prostate Symptom Score (I-PSS) is based on the answers to seven questions concerning urinary symptoms 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).The lower the score the better the outcome. Question eight refers to the patient's perceived quality of life. The range is from delighted with a score of zero to terrible with a score of 6. The lower the score the better the outcome.

    Time frame: week 12

  4. Quality of Life Score

    Question eight of the International Prostate Symptom Score (IPSS) refers to the patient's perceived quality of life. The range is from delighted with a score of zero to terrible with a score of 6. The lower the score the better the outcome

    Time frame: Week 12

  5. Opioid Use

    Patient reported use of the number of tablets taken from provided prescription of opioids for post-operative pain. This will be converted to a standardized morphine equivalency for comparison. The lower the value the better the outcome.

    Time frame: after discharge until post-op day 7

  6. Home Opioid Use in Standard Morphine Equivalency

    Patient reported use of the number of tablets taken from provided prescription of opioids for post-operative pain. This will be converted to a standardized morphine equivalency for comparison. The lower the value the better the outcome.

    Time frame: after discharge until post-op day 7

  7. Number of Incontinence Pads Used

    Patient reported number of incontinence pads used per day. The lower the number the better the outcome.

    Time frame: week 6

  8. Patient Reported Number of Pads Used Per Day.

    Patient reported number of incontinence pads used per day. The lower the number the better the outcome.

    Time frame: Week 12

  9. Number of Participants Experiencing Bladder Neck Contracture

    Number of incidence of participants experiencing bladder neck contracture.

    Time frame: week 12

  10. Number of Participants Experiencing Bladder Neck Contracture

    Number of Incidence of participants experiencing bladder neck contracture.

    Time frame: 1 year

07

Results

Posted Dec 26, 2019

Participant flow

Participant flow — Overall Study
MilestoneCatheter 16 FrenchCatheter 20 French
Started2725
Completed2421
Not completed34
Withdrew: Withdrawal by subject13
Withdrew: Physician decision21

Outcome measures

PrimaryCatheter Related Pain: Visual Analog Score Rating

Catheter related pain was measured using a visual analog score rating mean post-operative pain on a scale from 1 (no pain) to 10 (worst possible pain). The lower the score the better the outcome.

Time frame:
post-op day 5-7
Reported as:
Mean · score on a scale
Catheter Related Pain: Visual Analog Score Rating
score on a scaleCatheter 16 FrenchCatheter 20 French
Catheter Related Pain: Visual Analog Score Rating2.67 ± 1.612.67 ± 1.68
SecondaryUrinary Symptoms

The International Prostate Symptom Score (I-PSS) is based on the answers to seven questions concerning urinary symptoms 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).The lower the score the better the outcome.

Time frame:
week 6
Reported as:
Mean · score on a scale
Urinary Symptoms
score on a scaleCatheter 16 FrenchCatheter 20 French
Urinary Symptoms9.81 ± 4.257.95 ± 4.04
SecondaryQuality of Life Score

Question eight of IPSS refers to the patient's perceived quality of life. The range is from delighted with a score of zero to terrible with a score of 6. The lower the score the better the outcome.

Time frame:
Week 6
Reported as:
Mean · score on a scale
Quality of Life Score
score on a scaleCatheter 16 FrenchCatheter 20 French
Quality of Life Score3 ± 1.32.95 ± 1.72
SecondaryUrinary Symptoms

The International Prostate Symptom Score (I-PSS) is based on the answers to seven questions concerning urinary symptoms 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).The lower the score the better the outcome. Question eight refers to the patient's perceived quality of life. The range is from delighted with a score of zero to terrible with a score of 6. The lower the score the better the outcome.

Time frame:
week 12
Reported as:
Mean · score on a scale
Urinary Symptoms
score on a scaleCatheter 16 FrenchCatheter 20 French
Urinary Symptoms6.52 ± 4.757.59 ± 4.39
SecondaryQuality of Life Score

Question eight of the International Prostate Symptom Score (IPSS) refers to the patient's perceived quality of life. The range is from delighted with a score of zero to terrible with a score of 6. The lower the score the better the outcome

Time frame:
Week 12
Reported as:
Mean · score on a scale
Quality of Life Score
score on a scaleCatheter 16 FrenchCatheter 20 French
Quality of Life Score2.24 ± 1.32.29 ± 1.05
SecondaryOpioid Use

Patient reported use of the number of tablets taken from provided prescription of opioids for post-operative pain. This will be converted to a standardized morphine equivalency for comparison. The lower the value the better the outcome.

Time frame:
after discharge until post-op day 7
Reported as:
Mean · tablets
Opioid Use
tabletsCatheter 16 FrenchCatheter 20 French
Opioid Use5.00 ± 5.684.48 ± 5.75
SecondaryHome Opioid Use in Standard Morphine Equivalency

Patient reported use of the number of tablets taken from provided prescription of opioids for post-operative pain. This will be converted to a standardized morphine equivalency for comparison. The lower the value the better the outcome.

Time frame:
after discharge until post-op day 7
Reported as:
Mean · milligrams
Home Opioid Use in Standard Morphine Equivalency
milligramsCatheter 16 FrenchCatheter 20 French
Home Opioid Use in Standard Morphine Equivalency37.50 ± 42.6033.57 ± 43.12
SecondaryNumber of Incontinence Pads Used

Patient reported number of incontinence pads used per day. The lower the number the better the outcome.

Time frame:
week 6
Reported as:
Mean · number of pads
Number of Incontinence Pads Used
number of padsCatheter 16 FrenchCatheter 20 French
Number of Incontinence Pads Used2.00 ± 1.501.79 ± 1.32
SecondaryPatient Reported Number of Pads Used Per Day.

Patient reported number of incontinence pads used per day. The lower the number the better the outcome.

Time frame:
Week 12
Reported as:
Mean · number of pads
Patient Reported Number of Pads Used Per Day.
number of padsCatheter 16 FrenchCatheter 20 French
Patient Reported Number of Pads Used Per Day.1.17 ± 1.461.13 ± 0.96
SecondaryNumber of Participants Experiencing Bladder Neck Contracture

Number of incidence of participants experiencing bladder neck contracture.

Time frame:
week 12
Reported as:
Count of participants · Participants
Number of Participants Experiencing Bladder Neck Contracture
ParticipantsCatheter 16 FrenchCatheter 20 French
Number of Participants Experiencing Bladder Neck Contracture00
SecondaryNumber of Participants Experiencing Bladder Neck Contracture

Number of Incidence of participants experiencing bladder neck contracture.

Time frame:
1 year
Reported as:
Count of participants · Participants
Number of Participants Experiencing Bladder Neck Contracture
ParticipantsCatheter 16 FrenchCatheter 20 French
Number of Participants Experiencing Bladder Neck Contracture01

Adverse events

Collected over 1 year. Non-serious events are listed at a 5% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Catheter 16 French0/24 (0%)0/24 (0%)0/24 (0%)
Catheter 20 French0/21 (0%)0/21 (0%)1/21 (4.8%)
Most frequent other events
Most frequent other events
EventCatheter 16 FrenchCatheter 20 French
bladder neck contractureRenal and urinary disorders0/241/21

Baseline characteristics

Age, Continuous
Age, Continuous(years)Catheter 16 FrenchCatheter 20 FrenchTotal
Mean63.17 ± 7.0162.57 ± 5.9562.89 ± 6.47
Sex: Female, Male
Sex: Female, Male(Participants)Catheter 16 FrenchCatheter 20 FrenchTotal
Female000
Male242145
Race and Ethnicity Not Collected
Race and Ethnicity Not Collected(Participants)Catheter 16 FrenchCatheter 20 FrenchTotal
Count of participants——0
BMI
BMI(kg/m^2)Catheter 16 FrenchCatheter 20 FrenchTotal
Mean27.77 ± 3.2527.02 ± 3.3327.42 ± 3.27
Prior Abdominal Surgery
Prior Abdominal Surgery(Participants)Catheter 16 FrenchCatheter 20 FrenchTotal
Prior Abdominal Surgery - No141731
Prior Abdominal Surgery - Yes10414
Chronic Pain
Chronic Pain(Participants)Catheter 16 FrenchCatheter 20 FrenchTotal
Chronic Pain - No232043
Chronic Pain - Yes112
Previous Transurethral Resection of Prostate (TURP)
Previous Transurethral Resection of Prostate (TURP)(Participants)Catheter 16 FrenchCatheter 20 FrenchTotal
Previous TURP - No232144
Previous TURP -Yes101
International Prostate Symptom Score
International Prostate Symptom Score(score)Catheter 16 FrenchCatheter 20 FrenchTotal
Mean9.24 ± 6.0910.00 ± 5.789.59 ± 5.88

9 further baseline measures are reported on the registry.

08

Study locations

1 site
  • Virginia Mason Medical center
    Seattle, Washington 98101, United States
09

References and documents

Study documents

  • Protocol and statistical analysis plan · Jun 20, 2018

Documents are hosted by the registry — open the source record to download them.

Individual participant data

Plan to share: No

10

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Dec 26, 2019, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT04098809
Lead sponsor
Benaroya Research Institute
Responsible party
Sponsor
First posted
Sep 23, 2019
Start date
Nov 9, 2017
Primary completion
Nov 7, 2018
Completion
Nov 7, 2018
Results posted
Dec 26, 2019
Last update
Dec 26, 2019

Study contacts

John Corman, MD
principal investigator · Virginia Mason Medical Center

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
Yes
View the source record on ClinicalTrials.gov ↗

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