Postoperative Retention of UrinePhase 3NCT05753670
Effect of Preoperative Tamsulosin on Postoperative Urinary Retention
A Phase 3 study testing Tamsulosin in people with Postoperative Retention of Urine, run by Endeavor Health at 1 site in United States.
Trial summary
Approximately 25-30% of patients experience postoperative urinary retention after female pelvic surgery with mid-urethral sling placement. These patients are discharged home with a foley catheter for a few days. Read more about this study
- Who is it for?
- Ages 18 to 99 years, women onlyHealthy volunteers can take part
- Conditions the study is for
- Postoperative Retention of Urine
- What is being tested?
- Tamsulosin
- Type of treatment
- Pill or oral medicine
- Could I receive a placebo?
- Yes, some participants may receive a placebo
- How many people
- 179 participants
- Where
- 1 siteUnited States
- Study dates
- 1 Jul 2023to 2 Jun 2024
- Phase
- Phase 3
- Are there results?
- Yes, posted in the registrySummary in the doctors' view
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 99 years
- Women only
- Healthy volunteers accepted
- Adult, Older adult
Who may be able to join
- Mid-urethral sling placement
Who cannot join
- Age <18
- Planned combined cases with colorectal surgery, general surgery, or gynecology-oncology
- Planned sling revision or history of prior sling placement
- Known history of urinary retention
- Concomitant intravesical botulinum injections
- Known contraindication to tamsulosin
Trial locations and contacts
1 site in 1 country.
United States1 site
NorthShore University Health System
Evanston, Illinois, 60201
About this study
Official title: Effect of Preoperative Single-dose Tamsulosin on Postoperative Urinary Retention After Mid-urethral Sling Placement: a Randomized, Double-blinded, Placebo-controlled Trial
Approximately 25-30% of patients experience postoperative urinary retention after female pelvic surgery with mid-urethral sling placement. These patients are discharged home with a foley catheter for a few days. Despite being common, many patients consider being discharged home with a foley catheter as a complication of surgery and as the worst part of their experience. Previous studies have demonstrated that 3-5 days of preoperative tamsulosin (a safe and low-cost medication) have been shown to improve postoperative urinary retention rates. Although it takes tamsulosin 5 days to reach a steady-state in a patient, it reaches peak blood volume in 4-5 hours in a fasting patient. The effect of a single dose of preoperative tamsulosin on postoperative urinary retention has not been studied, however would be substantially easier for patients than multiple days of preoperative doses. In this study, the investigators would like to give patients preoperative tamsulosin versus placebo. The investigators would then evaluate for postoperative urinary retention. Previous studies have demonstrated a postoperative urinary retention rate decrease of 65-88% after various tamsulosin protocols. However, the effect of single preoperative dose of tamusloin on postoperative urinary retention has yet to be studied in female pelvic surgery. The investigators hypothesize that a single preoperative dose of tamsulosin will decrease the number of patients with postoperative urinary retention and therefore discharged with a foley catheter. Our goal is to improve patient outcomes and satisfaction postoperatively.
Read the detailed description
Postoperative urinary retention has been defined as the inability to void despite having fluid in the bladder during the postoperative period. Urinary retention after pelvic reconstructive surgery requiring indwelling catheter or self-catheterization usage occurs in approximately 30-60% of patients postoperatively.
During a retro-fill voiding trial, the bladder is back-filled with a set amount of sterile water (often 300mL), the catheter is removed, the patient is permitted to void and the voided volume is compared with a bladder scan post void residual volume. "Passing" a voiding trial has previously been defined as voiding equal or greater than ⅔ the residual volume, whereas others characterize "passing" as voiding at least 200mL and voiding a greater volume than the post-void residual volume. If the patient does not "pass" the voiding trial, the patient is characterized as having postoperative urinary retention and is discharged home with an indwelling catheter to prevent detrusor injury from bladder over-distention, pain and urinary tract infection.
Many women consider being discharged home with a foley catheter to be a surgical complication and describe catheter use as the worst aspect of their surgery. Indwelling catheters are the leading cause of hospital-acquired urinary tract infections (UTIs), are often a source of embarrassment and inconvenience for patients, and often require additional office visits and healthcare utilization.
Tamsulosin is an alpha-adrenergic receptor blocker which is thought to increase smooth muscle relaxation and improve urinary flow. Current literature has been primarily focused on the effect of tamsulosin in men with benign prostatic hyperplasia, however may be beneficial in women as well with limited studies for postoperative urinary retention. Chapman, et al published a randomized control trial evaluating postoperative urinary retention after female pelvic reconstructive surgery. These patients underwent 10 days of tamsulosin (3 days preoperative and 7 days postoperative) and were found to have a 65% decrease in the urinary retention rate from 25.8% to 8.8%. Livne, et al published a study evaluating postoperative urinary retention decrease of 79.2% after postoperative administration of dibenzyline (an alpha-adrenergic receptor blocker) in women undergoing hysterectomy (post-operative urinary retention rate of 18.75% in controls and 3.9% in the treatment group). Additional studies have also been published evaluating postoperative urinary retention in men and women undergoing various surgeries and have demonstrated a decrease in postoperative urinary retention after tamsulosin administration from 72-88% compared with controls. These studies vary in tamsulosin administration from multiple days preoperative and postoperative to multiple doses preoperative and postoperative to a single postoperative dose, however no studies have been published in evaluating a single preoperative dose of tamsulosin and the effect on postoperative urinary retention. This has previously been studied as tamsulosin reaches a steady state in approximately 5 days, however when tamsulosin is given in a fasting patient, it can reach the maximum blood concentration in approximately 4-5 hours. As the majority of female pelvic reconstructive surgeries performed by our department are same-day surgeries, with patients being discharged the day of surgery, the investigators would like to investigate the effect of a single preoperative dose of tamsulosin on postoperative urinary retention and, by effect, home catheter usage after surgery. Tamsulosin is cost-effective at approximately $2 per tablet. Despite primarily being prescribed for benign prostatic hyperplasia, tamsulosin has been found to be a safe and well-tolerated treatment for voiding dysfunction in women.
Postoperative urinary retention is common after pelvic reconstructive surgery with mid-urethral sling placement and is extremely bothersome to patients. Tamsulosin is a low-risk, well tolerated, cost-effective medication that studies have suggested may decrease the rate of postoperative urinary retention. No study to date has evaluated preoperative administration of single- dose tamsulosin for postoperative urinary retention in a randomized placebo-controlled trial.
- Conditions
- Postoperative Retention of Urine
- Being tested
- Tamsulosin, Placebo
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
TamsulosinDrug
Subjects randomized to the experimental arm will receive a single dose of 0.4mg Tamsulosin tablet in the preoperative holding area prior to their scheduled mid-urethral sling placement in the operating room.
PlaceboDrug
Subjects randomized to the control arm will receive a single dose of a placebo tablet in the preoperative holding area prior to their scheduled mid-urethral sling placement in the operating room.
| Study group | Role | What they receive |
|---|---|---|
| Tamsulosin | Experimental | Subjects randomized to the experimental arm will receive a single dose of 0.4mg Tamsulosin tablet in the preoperative holding area prior to their scheduled mid-urethral sling placement in the operating room. Receives: Drug: Tamsulosin |
| Placebo | Placebo comparator | Subjects randomized to the control arm will receive a single dose of a placebo tablet in the preoperative holding area prior to their scheduled mid-urethral sling placement in the operating room. Receives: Drug: Placebo |
What is being measured
The primary outcome is the main question the study is designed to answer.
Number of Participants With Postoperative Urinary Retention
Determine the postoperative urinary retention rates after preoperative administration of tamsulosin compared with placebo. This will be determined immediately postoperative in the postoperative recovery room based on whether patients pass or fail their voiding trial described above. The result will be documented in electronic medical records and obtained from chart review.
Measured: Immediate postoperative evaluation (1 day)
Secondary outcomes (3)
Number of Participants With Postoperative Urinary Tract Infection (UTI)
Compare differences in the incidence of postoperative UTI (number of participants diagnosed with a UTI within 30 days of procedure) after preoperative administration of tamsulosin compared with placebo.
Measured: Chart review of 30 days postoperative after surgery
Number of Participants With Unplanned Admission or Unplanned Healthcare Encounter
Evaluate the difference in unplanned admission the day or surgery or unplanned admission within 30 days after surgery, unplanned office visits within 30 days after surgery or Northshore encounters within 30 days after surgery after preoperative administration tamsulosin compared with placebo. These medical encounters will include any need for additional medical treatment, phone calls, complications or patient concerns within 30 days postoperatively. This data will be collected via chart review.
Measured: Chart review of 30 days postoperative after surgery
Number of Participants With Postoperative Hypotension or Syncope
Compare the number of participants with hypotension or syncope (immediately postoperative) after preoperative administration of tamsulosin compared with placebo.
Measured: Immediate postoperative evaluation (1 day)
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted3 Mar 2023
- Study start1 Jul 2023
- Primary completion2 May 2024
- Study completion2 Jun 2024
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Publications (17)Papers the sponsor has linked to this study.
- Other trials for Postoperative Retention of UrineStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 3
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Model description
- This is a prospective randomized, double-blinded, placebo- controlled trial of patients who are undergoing elective mid-urethral sling placement with the Center for Pelvic Health at the Northshore University Health System. Written consent will be obtained. Patients who are undergoing a mid-urethral sling placement will be enrolled (after an informed consent discussion) to receive either a single tablet of tamsulosin 0.4mg or a placebo in the preoperative holding area on the day of their scheduled surgery.
- Masking
- Quadruple blind
- Who is masked
- Participant, Care provider, Investigator, Outcomes assessor
- Enrolment
- 179 participants (actual)
Sponsor and investigators
- Lead sponsor
- Endeavor Health
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Ghazaleh Rostami Nia, Endeavor Health
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT05753670
- Sponsor's protocol ID
- EH22-470
- Status last verified
- Oct 2025
- First submitted
- 13 Dec 2022
- Last updated
- 28 Oct 2025
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- Yes
- FDA-regulated drug
- Yes
- FDA-regulated device
- No
- Individual data sharing
- No
Publications
Willis-Gray MG, Wu JM, Field C, Pulliam S, Husk KE, Brueseke TJ, Geller EJ, Connolly A, Dieter AA. Is a Postvoid Residual Necessary? A Randomized Trial of Two Postoperative Voiding Protocols. Female Pelvic Med Reconstr Surg. 2021 Feb 1;27(2):e256-e260. doi: 10.1097/SPV.0000000000000743.
PubMed 31157716Geller EJ, Hankins KJ, Parnell BA, Robinson BL, Dunivan GC. Diagnostic accuracy of retrograde and spontaneous voiding trials for postoperative voiding dysfunction: a randomized controlled trial. Obstet Gynecol. 2011 Sep;118(3):637-642. doi: 10.1097/AOG.0b013e318229e8dd.
PubMed 21860294Wang R, Won S, Haviland MJ, Von Bargen E, Hacker MR, Li J, Lefevre R. Voiding trial outcome following pelvic floor repair without incontinence procedures. Int Urogynecol J. 2016 Aug;27(8):1215-20. doi: 10.1007/s00192-016-2975-y. Epub 2016 Feb 17.
PubMed 26886553Pulvino JQ, Duecy EE, Buchsbaum GM, Flynn MK. Comparison of 2 techniques to predict voiding efficiency after inpatient urogynecologic surgery. J Urol. 2010 Oct;184(4):1408-12. doi: 10.1016/j.juro.2010.05.096. Epub 2010 Aug 19.
PubMed 20727543Pomajzl, A. J., and Larry E. Siref. "Post-Op Urinary Retention." StatPearls, StatPearls Publishing, 2022. PubMed, http://www.ncbi.nlm.nih.gov/books/NBK549844/
Elkadry EA, Kenton KS, FitzGerald MP, Shott S, Brubaker L. Patient-selected goals: a new perspective on surgical outcome. Am J Obstet Gynecol. 2003 Dec;189(6):1551-7; discussion 1557-8. doi: 10.1016/s0002-9378(03)00932-3.
PubMed 14710061Tunitsky-Bitton E, Murphy A, Barber MD, Goldman HB, Vasavada S, Jelovsek JE. Assessment of voiding after sling: a randomized trial of 2 methods of postoperative catheter management after midurethral sling surgery for stress urinary incontinence in women. Am J Obstet Gynecol. 2015 May;212(5):597.e1-9. doi: 10.1016/j.ajog.2014.11.033. Epub 2014 Nov 27.
PubMed 25434837Propst K, Tunitsky-Bitton E, O'Sullivan DM, Steinberg AC, LaSala C. Phenazopyridine for Evaluation of Ureteral Patency: A Randomized Controlled Trial. Obstet Gynecol. 2016 Aug;128(2):348-355. doi: 10.1097/AOG.0000000000001472.
PubMed 27399998Meyer LE, Brown JN. Tamsulosin for voiding dysfunction in women. Int Urol Nephrol. 2012 Dec;44(6):1649-56. doi: 10.1007/s11255-012-0275-0. Epub 2012 Sep 16.
PubMed 22983886Chapman GC, Sheyn D, Slopnick EA, Roberts K, El-Nashar SA, Henderson JW, Mangel J, Hijaz AK, Pollard RR, Mahajan ST. Tamsulosin vs placebo to prevent postoperative urinary retention following female pelvic reconstructive surgery: a multicenter randomized controlled trial. Am J Obstet Gynecol. 2021 Sep;225(3):274.e1-274.e11. doi: 10.1016/j.ajog.2021.04.236. Epub 2021 Apr 21.
PubMed 33894146Livne PM, Kaplan B, Ovadia Y, Servadio C. Prevention of post-hysterectomy urinary retention by alpha-adrenergic blocker. Acta Obstet Gynecol Scand. 1983;62(4):337-40. doi: 10.3109/00016348309156234.
PubMed 6138916Madani AH, Aval HB, Mokhtari G, Nasseh H, Esmaeili S, Shakiba M, Shakiba RS, Seyed Damavand SM. Effectiveness of tamsulosin in prevention of post-operative urinary retention: a randomized double-blind placebo-controlled study. Int Braz J Urol. 2014 Jan-Feb;40(1):30-6. doi: 10.1590/S1677-5538.IBJU.2014.01.05.
PubMed 24642148Chapman GC, Sheyn D, Petrikovets A, Mahajan ST, El-Nashar S, Pollard R, Mangel JM. Tamsulosin to Prevent Postoperative Urinary Retention After Female Pelvic Reconstructive Surgery. Female Pelvic Med Reconstr Surg. 2020 Nov;26(11):682-687. doi: 10.1097/SPV.0000000000000650.
PubMed 30418263Mohammadi-Fallah M, Hamedanchi S, Tayyebi-Azar A. Preventive effect of tamsulosin on postoperative urinary retention. Korean J Urol. 2012 Jun;53(6):419-23. doi: 10.4111/kju.2012.53.6.419. Epub 2012 Jun 19.
PubMed 22741052Wilde MI, McTavish D. Tamsulosin. A review of its pharmacological properties and therapeutic potential in the management of symptomatic benign prostatic hyperplasia. Drugs. 1996 Dec;52(6):883-98. doi: 10.2165/00003495-199652060-00012.
PubMed 8957159
Study at a glance
From the registry record, last updated by the sponsor on 28 Oct 2025. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Effect of Preoperative Single-dose Tamsulosin on Postoperative Urinary Retention After Mid-urethral Sling Placement: a Randomized, Double-blinded, Placebo-controlled Trial
- ClinicalTrials.gov ID
- NCT05753670
- Acronym / sponsor ID
- EH22-470
- Conditions
- Postoperative Retention of Urine
- Phase
- Phase 3
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 179 participants (actual)
- Lead sponsor
- Endeavor HealthUniversity, hospital or other
- Study start
- 1 Jul 2023 (actual)
- Primary completion
- 2 May 2024 (actual)
- Study completion
- 2 Jun 2024 (actual)
- First posted
- 3 Mar 2023 (actual)
- Results
- Posted 28 Oct 2025
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Approximately 25-30% of patients experience postoperative urinary retention after female pelvic surgery with mid-urethral sling placement. These patients are discharged home with a foley catheter for a few days. Despite being common, many patients consider being discharged home with a foley catheter as a complication of surgery and as the worst part of their experience. Previous studies have demonstrated that 3-5 days of preoperative tamsulosin (a safe and low-cost medication) have been shown to improve postoperative urinary retention rates. Although it takes tamsulosin 5 days to reach a steady-state in a patient, it reaches peak blood volume in 4-5 hours in a fasting patient. The effect of a single dose of preoperative tamsulosin on postoperative urinary retention has not been studied, however would be substantially easier for patients than multiple days of preoperative doses. In this study, the investigators would like to give patients preoperative tamsulosin versus placebo. The investigators would then evaluate for postoperative urinary retention. Previous studies have demonstrated a postoperative urinary retention rate decrease of 65-88% after various tamsulosin protocols. However, the effect of single preoperative dose of tamusloin on postoperative urinary retention has yet to be studied in female pelvic surgery. The investigators hypothesize that a single preoperative dose of tamsulosin will decrease the number of patients with postoperative urinary retention and therefore discharged with a foley catheter. Our goal is to improve patient outcomes and satisfaction postoperatively.
Detailed description
Postoperative urinary retention has been defined as the inability to void despite having fluid in the bladder during the postoperative period. Urinary retention after pelvic reconstructive surgery requiring indwelling catheter or self-catheterization usage occurs in approximately 30-60% of patients postoperatively.
During a retro-fill voiding trial, the bladder is back-filled with a set amount of sterile water (often 300mL), the catheter is removed, the patient is permitted to void and the voided volume is compared with a bladder scan post void residual volume. "Passing" a voiding trial has previously been defined as voiding equal or greater than ⅔ the residual volume, whereas others characterize "passing" as voiding at least 200mL and voiding a greater volume than the post-void residual volume. If the patient does not "pass" the voiding trial, the patient is characterized as having postoperative urinary retention and is discharged home with an indwelling catheter to prevent detrusor injury from bladder over-distention, pain and urinary tract infection.
Many women consider being discharged home with a foley catheter to be a surgical complication and describe catheter use as the worst aspect of their surgery. Indwelling catheters are the leading cause of hospital-acquired urinary tract infections (UTIs), are often a source of embarrassment and inconvenience for patients, and often require additional office visits and healthcare utilization.
Tamsulosin is an alpha-adrenergic receptor blocker which is thought to increase smooth muscle relaxation and improve urinary flow. Current literature has been primarily focused on the effect of tamsulosin in men with benign prostatic hyperplasia, however may be beneficial in women as well with limited studies for postoperative urinary retention. Chapman, et al published a randomized control trial evaluating postoperative urinary retention after female pelvic reconstructive surgery. These patients underwent 10 days of tamsulosin (3 days preoperative and 7 days postoperative) and were found to have a 65% decrease in the urinary retention rate from 25.8% to 8.8%. Livne, et al published a study evaluating postoperative urinary retention decrease of 79.2% after postoperative administration of dibenzyline (an alpha-adrenergic receptor blocker) in women undergoing hysterectomy (post-operative urinary retention rate of 18.75% in controls and 3.9% in the treatment group). Additional studies have also been published evaluating postoperative urinary retention in men and women undergoing various surgeries and have demonstrated a decrease in postoperative urinary retention after tamsulosin administration from 72-88% compared with controls. These studies vary in tamsulosin administration from multiple days preoperative and postoperative to multiple doses preoperative and postoperative to a single postoperative dose, however no studies have been published in evaluating a single preoperative dose of tamsulosin and the effect on postoperative urinary retention. This has previously been studied as tamsulosin reaches a steady state in approximately 5 days, however when tamsulosin is given in a fasting patient, it can reach the maximum blood concentration in approximately 4-5 hours. As the majority of female pelvic reconstructive surgeries performed by our department are same-day surgeries, with patients being discharged the day of surgery, the investigators would like to investigate the effect of a single preoperative dose of tamsulosin on postoperative urinary retention and, by effect, home catheter usage after surgery. Tamsulosin is cost-effective at approximately $2 per tablet. Despite primarily being prescribed for benign prostatic hyperplasia, tamsulosin has been found to be a safe and well-tolerated treatment for voiding dysfunction in women.
Postoperative urinary retention is common after pelvic reconstructive surgery with mid-urethral sling placement and is extremely bothersome to patients. Tamsulosin is a low-risk, well tolerated, cost-effective medication that studies have suggested may decrease the rate of postoperative urinary retention. No study to date has evaluated preoperative administration of single- dose tamsulosin for postoperative urinary retention in a randomized placebo-controlled trial.
Study design
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Quadruple blind (participant, care provider, investigator, outcomes assessor)
- Number of arms
- 2
- Model description
- This is a prospective randomized, double-blinded, placebo- controlled trial of patients who are undergoing elective mid-urethral sling placement with the Center for Pelvic Health at the Northshore University Health System. Written consent will be obtained. Patients who are undergoing a mid-urethral sling placement will be enrolled (after an informed consent discussion) to receive either a single tablet of tamsulosin 0.4mg or a placebo in the preoperative holding area on the day of their scheduled surgery.
| Arm | Type | Receives |
|---|---|---|
| Tamsulosin | Experimental | Drug: TamsulosinSubjects randomized to the experimental arm will receive a single dose of 0.4mg Tamsulosin tablet in the preoperative holding area prior to their scheduled mid-urethral sling placement in the operating room. |
| Placebo | Placebo comparator | Drug: PlaceboSubjects randomized to the control arm will receive a single dose of a placebo tablet in the preoperative holding area prior to their scheduled mid-urethral sling placement in the operating room. |
Who may qualify
- Ages
- 18 to 99 years
- Sex
- Female only
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (1 listed)
- Mid-urethral sling placement
Key exclusion criteria (6 listed)
- Age <18
- Planned combined cases with colorectal surgery, general surgery, or gynecology-oncology
- Planned sling revision or history of prior sling placement
- Known history of urinary retention
- Concomitant intravesical botulinum injections
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| TamsulosinSubjects randomized to the experimental arm will receive a single dose of 0.4mg Tamsulosin tablet in the preoperative holding area prior to their scheduled mid-urethral sling placement in the operating room. | Drug | Tamsulosin |
| PlaceboSubjects randomized to the control arm will receive a single dose of a placebo tablet in the preoperative holding area prior to their scheduled mid-urethral sling placement in the operating room. | Drug | Placebo |
Primary outcome
Number of Participants With Postoperative Urinary Retention
Time frame: Immediate postoperative evaluation (1 day)
Determine the postoperative urinary retention rates after preoperative administration of tamsulosin compared with placebo. This will be determined immediately postoperative in the postoperative recovery room based on whether patients pass or fail their voiding trial described above. The result will be documented in electronic medical records and obtained from chart review.
3 secondary outcomes
Number of Participants With Postoperative Urinary Tract Infection (UTI)
Time frame: Chart review of 30 days postoperative after surgery
Number of Participants With Unplanned Admission or Unplanned Healthcare Encounter
Time frame: Chart review of 30 days postoperative after surgery
Number of Participants With Postoperative Hypotension or Syncope
Time frame: Immediate postoperative evaluation (1 day)
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 28 Oct 2025.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
- Background: PubMed 31157716Willis-Gray MG, Wu JM, Field C, Pulliam S, Husk KE, Brueseke TJ, Geller EJ, Connolly A, Dieter AA. Is a Postvoid Residual Necessary? A Randomized Trial of Two Postoperative Voiding Protocols. Female Pelvic Med Reconstr Surg. 2021 Feb 1;27(2):e256-e260. doi: 10.1097/SPV.0000000000000743.
- Background: PubMed 21860294Geller EJ, Hankins KJ, Parnell BA, Robinson BL, Dunivan GC. Diagnostic accuracy of retrograde and spontaneous voiding trials for postoperative voiding dysfunction: a randomized controlled trial. Obstet Gynecol. 2011 Sep;118(3):637-642. doi: 10.1097/AOG.0b013e318229e8dd.
- Background: PubMed 26886553Wang R, Won S, Haviland MJ, Von Bargen E, Hacker MR, Li J, Lefevre R. Voiding trial outcome following pelvic floor repair without incontinence procedures. Int Urogynecol J. 2016 Aug;27(8):1215-20. doi: 10.1007/s00192-016-2975-y. Epub 2016 Feb 17.
- Background: PubMed 20727543Pulvino JQ, Duecy EE, Buchsbaum GM, Flynn MK. Comparison of 2 techniques to predict voiding efficiency after inpatient urogynecologic surgery. J Urol. 2010 Oct;184(4):1408-12. doi: 10.1016/j.juro.2010.05.096. Epub 2010 Aug 19.
- BackgroundPomajzl, A. J., and Larry E. Siref. "Post-Op Urinary Retention." StatPearls, StatPearls Publishing, 2022. PubMed, http://www.ncbi.nlm.nih.gov/books/NBK549844/
- Background: PubMed 14710061Elkadry EA, Kenton KS, FitzGerald MP, Shott S, Brubaker L. Patient-selected goals: a new perspective on surgical outcome. Am J Obstet Gynecol. 2003 Dec;189(6):1551-7; discussion 1557-8. doi: 10.1016/s0002-9378(03)00932-3.
- Background: PubMed 25434837Tunitsky-Bitton E, Murphy A, Barber MD, Goldman HB, Vasavada S, Jelovsek JE. Assessment of voiding after sling: a randomized trial of 2 methods of postoperative catheter management after midurethral sling surgery for stress urinary incontinence in women. Am J Obstet Gynecol. 2015 May;212(5):597.e1-9. doi: 10.1016/j.ajog.2014.11.033. Epub 2014 Nov 27.
- Background: PubMed 27399998Propst K, Tunitsky-Bitton E, O'Sullivan DM, Steinberg AC, LaSala C. Phenazopyridine for Evaluation of Ureteral Patency: A Randomized Controlled Trial. Obstet Gynecol. 2016 Aug;128(2):348-355. doi: 10.1097/AOG.0000000000001472.
- Background: PubMed 22983886Meyer LE, Brown JN. Tamsulosin for voiding dysfunction in women. Int Urol Nephrol. 2012 Dec;44(6):1649-56. doi: 10.1007/s11255-012-0275-0. Epub 2012 Sep 16.
- Background: PubMed 33894146Chapman GC, Sheyn D, Slopnick EA, Roberts K, El-Nashar SA, Henderson JW, Mangel J, Hijaz AK, Pollard RR, Mahajan ST. Tamsulosin vs placebo to prevent postoperative urinary retention following female pelvic reconstructive surgery: a multicenter randomized controlled trial. Am J Obstet Gynecol. 2021 Sep;225(3):274.e1-274.e11. doi: 10.1016/j.ajog.2021.04.236. Epub 2021 Apr 21.
- Background: PubMed 6138916Livne PM, Kaplan B, Ovadia Y, Servadio C. Prevention of post-hysterectomy urinary retention by alpha-adrenergic blocker. Acta Obstet Gynecol Scand. 1983;62(4):337-40. doi: 10.3109/00016348309156234.
- Background: PubMed 24642148Madani AH, Aval HB, Mokhtari G, Nasseh H, Esmaeili S, Shakiba M, Shakiba RS, Seyed Damavand SM. Effectiveness of tamsulosin in prevention of post-operative urinary retention: a randomized double-blind placebo-controlled study. Int Braz J Urol. 2014 Jan-Feb;40(1):30-6. doi: 10.1590/S1677-5538.IBJU.2014.01.05.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 3 study testing Tamsulosin in people with Postoperative Retention of Urine, run by Endeavor Health at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 1 inclusion and 6 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 28 Oct 2025. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
Yes. Results are posted in the registry (first posted 28 Oct 2025). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Number of Participants With Postoperative Urinary Retention (time frame: Immediate postoperative evaluation (1 day)). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT05753670, which also lists 17 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 28 Oct 2025.