Pre-incisional Wound INfiltration and Hypogastric PLEXus Block Using Ropivacaine in Laparoscopic Myomectomy (WINPLEX)

December 15, 2025 updated by: Nikita Kharlov, Saint Petersburg State University, Russia

Impact of Pre-incisional Wound Infiltration and Hypogastric Plexus Block Using Ropivacaine on Postoperative Pain Following Laparoscopic Myomectomy: A Single-Center, Prospective, Randomized, Placebo-Controlled, Double-Blind Study

The purpose of this study is to assess an impact of laparoscopic superior hypogastric plexus (SHP) block combined with preemptive troacar site infiltration on postoperative pain intensity following laparoscopic myomectomy.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

Patients randomized into 3 groups with a target ratio of 1:1:1 were included in the study: group 1 received standard systemic analgesia combined with troacar site infiltration and laparoscopic SHP block; group 2 received troacar site infiltration without SHP block; control group (group 3) received standard systemic analgesia alone. The primary endpoint was presented by assessing pain intensity using the numeric rating scale (NRS) at 4 hours postoperatively. Secondary endpoints included NRS dynamics at 2, 6, 8, 12, and 24 hours postoperatively, time to first mobilization, opioid use, and pain quality assessment.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
207

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Russia
      • Saint Petersburg, Russia
        • Saint Petersburg State University Hospital

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria

  • Women aged ≥18 years.
  • Indication for laparoscopic myomectomy due to ≥6 cm fibroid(s) or multiple fibroids.
  • Ability to provide informed consent.

Exclusion Criteria

  • FIGO type 7 subserosal pedunculated myoma.
  • Conversion to laparotomy.
  • Severe presacral adhesions preventing safe SHPB.
  • Concomitant pelvic or abdominal surgery.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Double

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Placebo Comparator: Standart analgesia
Standard postoperative analgesia (systemic non-steroidal anti-inflammatory drugs, paracetamol, opioid analgetics).
Procedure: Troacar site infiltration
Infiltration of the anterior abdominal wall is performed with placebo or 0.2% ropivacaine diluted with physiological saline on a syringe in the volume of 20 ml - 5 ml for each incision. The drug is injected with a 22-gauge needle at a 90-degree angle.
Procedure: Superior hypogastric plexus block
At the beginning of the operation the camera is used to visualise the area of the promontorium. Next, a 1 mm laparoscopic puncture needle is inserted through a trocar in the suprapubic region and plunged into the upper part of the formed dome to a depth of no more than 1 cm. After positioning the needle retroperitoneally, an aspiration test is performed to prevent intravascular injection. Then, 20 ml of placebo or 0.2% ropivacaine diluted with physiological saline is slowly injected. At the end of the procedure, the retroperitoneal space swollen by the local anaesthetic is visualised in the promontorium.
Active Comparator: Troacar site infiltration
Troacar site infiltration without SHP block
Procedure: Troacar site infiltration
Infiltration of the anterior abdominal wall is performed with placebo or 0.2% ropivacaine diluted with physiological saline on a syringe in the volume of 20 ml - 5 ml for each incision. The drug is injected with a 22-gauge needle at a 90-degree angle.
Procedure: Superior hypogastric plexus block
At the beginning of the operation the camera is used to visualise the area of the promontorium. Next, a 1 mm laparoscopic puncture needle is inserted through a trocar in the suprapubic region and plunged into the upper part of the formed dome to a depth of no more than 1 cm. After positioning the needle retroperitoneally, an aspiration test is performed to prevent intravascular injection. Then, 20 ml of placebo or 0.2% ropivacaine diluted with physiological saline is slowly injected. At the end of the procedure, the retroperitoneal space swollen by the local anaesthetic is visualised in the promontorium.
Experimental: SHP block
Standard systemic analgesia combined with troacar site infiltration and laparoscopic SHP block
Procedure: Troacar site infiltration
Infiltration of the anterior abdominal wall is performed with placebo or 0.2% ropivacaine diluted with physiological saline on a syringe in the volume of 20 ml - 5 ml for each incision. The drug is injected with a 22-gauge needle at a 90-degree angle.
Procedure: Superior hypogastric plexus block
At the beginning of the operation the camera is used to visualise the area of the promontorium. Next, a 1 mm laparoscopic puncture needle is inserted through a trocar in the suprapubic region and plunged into the upper part of the formed dome to a depth of no more than 1 cm. After positioning the needle retroperitoneally, an aspiration test is performed to prevent intravascular injection. Then, 20 ml of placebo or 0.2% ropivacaine diluted with physiological saline is slowly injected. At the end of the procedure, the retroperitoneal space swollen by the local anaesthetic is visualised in the promontorium.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Pain Score
Time Frame: 4 hours postoperatively
Pain syndrome intensity 4 hours after laparoscopic myomectomy. The NRS (Numeric Rating Scale) score from 0-10 is a tool for self-reporting pain intensity, where 0 equals no pain and 10 equals the worst pain imaginable.
4 hours postoperatively

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Pain Score Dynamics
Time Frame: 2, 6, 8, 12, and 24 hours postoperatively
The NRS (Numeric Rating Scale) score from 0-10 is a tool for self-reporting pain intensity, where 0 equals no pain and 10 equals the worst pain imaginable.
2, 6, 8, 12, and 24 hours postoperatively
Mobilization
Time Frame: Early postoperative period
Timing of post-surgery mobilization (hours after surgery)
Early postoperative period
Opioid Use
Time Frame: Postoperative period, up to 48 hours
Number of opioid administrations
Postoperative period, up to 48 hours
Pain Localisation (Superficial/Deep)
Time Frame: Within 48 hours after surgery
Patients were asked to characterize the predominant type of postoperative pain using a standardized questionnaire. Superficial pain was defined as somatic pain (localized, similar to muscle soreness), while deep pain was defined as visceral (diffuse, dull, similar to menstrual pain). Responses were used to evaluate the visceral pain component after surgery. Participants were allowed to report more than one type of postoperative pain.
Within 48 hours after surgery

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Saint Petersburg State University, Russia

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
May 14, 2024

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
January 26, 2025

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
January 26, 2025

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
May 14, 2024

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
May 20, 2024

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
May 24, 2024

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
January 6, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
December 15, 2025

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
December 1, 2025

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • WINPLEX

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

Cookie Settings

We use cookies to ensure that we give you the best experience on our website. For more details carefully read our Privacy and Cookies Policy. ...>>>You can change your preferences or withdraw your consent at any time by deleting the cookies from your website or computer as described in the policy. Please accept it and choose your preferences by ticking the corresponding boxes in the "Manage Settings" section below. Please carefully read our Terms of Service before you proceed with using any part of this website.
«Manage Settings