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The POUR (Postoperative Urinary Retention) Study

The POUR Study: Effects of Neuromuscular Reversal Agents on Postoperative Urinary Retention (POUR) Following Laparoscopic Inguinal Hernia Repair

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05276804
Acronym
POUR
Enrollment
171
Registered
2022-03-11
Start date
2022-04-13
Completion date
2024-09-03
Last updated
2025-07-09

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

Conditions

Postoperative Urinary Retention

Keywords

Sugammadex

Brief summary

The primary aim of this study will be to compare the rate of postoperative urinary retention between patients receiving Sugammadex and those receiving traditional reversal agents

Detailed description

Postoperative urinary retention following laparoscopic inguinal hernia repair occurs in approximately one out of ten patients. The more rapid reversal of neuromuscular blockade with Sugammadex has empirically been associated with low rates of postoperative urinary retention. In this study, patients will receive Sugammadex following laparoscopic inguinal hernia repair and then be retrospectively matched against a group of patients who did not receive Sugammadex. The primary aim of this study will be to compare the rate of postoperative urinary retention between patients receiving Sugammadex and those receiving traditional reversal agents (e.g. neostigmine which has a retention rate of 5-11%). We will also examine difference in cost and quality of life between the two groups. Our hypothesis is that the use of Sugammadex will decrease rate of postoperative urinary retention, decrease associated cost, such as need for admission, and not negatively impact quality of life.

Interventions

DRUGSugammadex

The dosing for Sugammadex is 4mg/kg for a deep reversal and a 2mg/kg for a standard reversal, which will be more common for this study. Sugammadex comes in 200mg/2mL and 500mg/5mL vials. Because of the variability in weight of the patients and the type of reversal needed (deep vs standard), 140 5mL vials will be required.

Sponsors

Merck Sharp & Dohme LLC
CollaboratorINDUSTRY
Wake Forest University Health Sciences
Lead SponsorOTHER

Study design

Allocation
NON_RANDOMIZED
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

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

Inclusion criteria

* Over the age of 18 * Undergoing laparoscopic inguinal hernia repair at Carolinas Medical Center by attending surgeons within the Division of Gastrointestinal and Minimally Invasive Surgery * Unilateral or bilateral inguinal hernia repair; may have concurrent umbilical hernia repair performed * Agreeable to participation in the study

Exclusion criteria

* Patients who are having concurrent ventral or flank hernias repaired at time of operation or are having an inguinal hernia repair along with another operation (e.g. laparoscopic cholecystectomy) * End-stage renal disease (Creatinine clearance less than 30) * Neuromuscular disease * Prior adverse reactions to Sugammadex * Patients who do not provide consent for the study

Design outcomes

Primary

MeasureTime frameDescription
Number of Participants With Urinary Retention6 hours postopUrinary retention is defined as the inability to void at six hours postoperatively, which will be recorded in the postoperative recovery area and the same definition for urinary retention will be applied to the comparative retrospective cohort

Secondary

MeasureTime frameDescription
Length of Stay (Days)From post op to discharge (up to 365 days)Patients will be followed from post surgery until discharge to determine the interim time
Hospital CostAt discharge (up to 365 days)Patient costs associated with procedure and hospital stay

Other

MeasureTime frameDescription
Quality of Life SurveyWeek 2Quality of life survey given post hernia repair to evaluate mesh sensation, pain and movement limitations. 23 total items. Each item is scored 0 (no symptoms) to 5 (disabling symptoms). Total score range is 0-115 with a low score indicating surgery had no negative impact on quality of life.
Number of Participants With Clean Wounds at Follow UpUp to Week 2Number of participants with clean wounds based on the Center for Disease Control and Prevention (CDC) Wound guidelines. CDC wound classification options are Clean, Clean-Contaminated, Contaminated, and Dirty/Infected.
Operation TimeDay 1Number of minutes the operation lasted
Morphine Milligram EquivalentsDay 1Morphine milligram equivalents (MME) represents the potency of an opioid dose relative to morphine. MME is intended to help clinicians make safe, appropriate decisions concerning changes to opioid regimens.

Countries

United States

Participant flow

Recruitment details

74 prospectively enrolled into Sugammadex group 74 retrospectively matched from baseline (non-Sugammadex) group

Participants by arm

ArmCount
Sugammadex
Prospective cohort of patients undergoing laparoscopic inguinal hernia repair will receive Sugammadex. Sugammadex will be used for reversal of their neuromuscular blockade. The dosing for Sugammadex is 4mg/kg for a deep reversal and a 2mg/kg for a standard reversal, which will be more common for this study. Sugammadex comes in 200mg/2mL and 500mg/5mL vials. Because of the variability in weight of the patients and the type of reversal needed (deep vs standard), 140 5mL vials will be required.
74
Retrospective Cohort
Retrospective cohort of patients who did not receive Sugammadex
74
Total148

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall Studyscreen failure230

Baseline characteristics

CharacteristicTotalSugammadexRetrospective Cohort
Age, Continuous59.3 Years
STANDARD_DEVIATION 15
59.4 Years
STANDARD_DEVIATION 15.5
59.2 Years
STANDARD_DEVIATION 14.6
Diabetes Status
No
141 Participants68 Participants73 Participants
Diabetes Status
Yes
7 Participants6 Participants1 Participants
History of BPH (Benign prostatic hyperplasia)
No
123 Participants64 Participants59 Participants
History of BPH (Benign prostatic hyperplasia)
Yes
25 Participants10 Participants15 Participants
Primary vs Recurrent Repair
Primary
127 Participants63 Participants64 Participants
Primary vs Recurrent Repair
Recurrent
21 Participants11 Participants10 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Black or African American
23 Participants11 Participants12 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
4 Participants1 Participants3 Participants
Race (NIH/OMB)
White
121 Participants62 Participants59 Participants
Sex: Female, Male
Female
9 Participants5 Participants4 Participants
Sex: Female, Male
Male
139 Participants69 Participants70 Participants
Side of Inguinal Repair
Bilateral
57 Participants30 Participants27 Participants
Side of Inguinal Repair
Unilateral
91 Participants44 Participants47 Participants
Steroids Use
No
135 Participants69 Participants66 Participants
Steroids Use
Yes
13 Participants5 Participants8 Participants
Surgical Repair Technique
Laparoscopic
94 Participants35 Participants59 Participants
Surgical Repair Technique
Robotic
54 Participants39 Participants15 Participants
Tobacco Status
Current
16 Participants5 Participants11 Participants
Tobacco Status
Former
51 Participants30 Participants21 Participants
Tobacco Status
Never
81 Participants39 Participants42 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 740 / 74
other
Total, other adverse events
0 / 740 / 74
serious
Total, serious adverse events
0 / 740 / 74

Outcome results

Primary

Number of Participants With Urinary Retention

Urinary retention is defined as the inability to void at six hours postoperatively, which will be recorded in the postoperative recovery area and the same definition for urinary retention will be applied to the comparative retrospective cohort

Time frame: 6 hours postop

ArmMeasureCategoryValue (COUNT_OF_PARTICIPANTS)
SugammadexNumber of Participants With Urinary RetentionYes0 Participants
SugammadexNumber of Participants With Urinary RetentionNo74 Participants
Retrospective CohortNumber of Participants With Urinary RetentionYes11 Participants
Retrospective CohortNumber of Participants With Urinary RetentionNo63 Participants
Secondary

Hospital Cost

Patient costs associated with procedure and hospital stay

Time frame: At discharge (up to 365 days)

ArmMeasureValue (MEAN)Dispersion
SugammadexHospital Cost57954 USDStandard Deviation 13448
Retrospective CohortHospital Cost54970 USDStandard Deviation 19324
Secondary

Length of Stay (Days)

Patients will be followed from post surgery until discharge to determine the interim time

Time frame: From post op to discharge (up to 365 days)

ArmMeasureValue (MEAN)Dispersion
SugammadexLength of Stay (Days)0.0 DaysStandard Deviation 0.1
Retrospective CohortLength of Stay (Days)0.3 DaysStandard Deviation 0.9
Other Pre-specified

Morphine Milligram Equivalents

Morphine milligram equivalents (MME) represents the potency of an opioid dose relative to morphine. MME is intended to help clinicians make safe, appropriate decisions concerning changes to opioid regimens.

Time frame: Day 1

ArmMeasureValue (MEAN)Dispersion
SugammadexMorphine Milligram Equivalents38.3 milligramsStandard Deviation 11.9
Retrospective CohortMorphine Milligram Equivalents38.0 milligramsStandard Deviation 17.8
Other Pre-specified

Number of Participants With Clean Wounds at Follow Up

Number of participants with clean wounds based on the Center for Disease Control and Prevention (CDC) Wound guidelines. CDC wound classification options are Clean, Clean-Contaminated, Contaminated, and Dirty/Infected.

Time frame: Up to Week 2

ArmMeasureValue (NUMBER)
SugammadexNumber of Participants With Clean Wounds at Follow Up74 participants
Retrospective CohortNumber of Participants With Clean Wounds at Follow Up74 participants
Other Pre-specified

Operation Time

Number of minutes the operation lasted

Time frame: Day 1

ArmMeasureValue (MEAN)Dispersion
SugammadexOperation Time105.9 minutesStandard Deviation 26.8
Retrospective CohortOperation Time102.1 minutesStandard Deviation 51.3
Other Pre-specified

Quality of Life Survey

Quality of life survey given post hernia repair to evaluate mesh sensation, pain and movement limitations. 23 total items. Each item is scored 0 (no symptoms) to 5 (disabling symptoms). Total score range is 0-115 with a low score indicating surgery had no negative impact on quality of life.

Time frame: Week 2

Population: This outcome measure type was entered incorrectly when the study was initially registered. The QOL survey should have been designated as other.

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