QIPB in Inguinal Hernia

March 8, 2026 updated by: Muhammed Halit Satici, Konya City Hospital

Effect of the Quadro-Iliac Plane Block on Quality of Recovery Following Laparoscopic Inguinal Hernia Surgery: A Prospective, Randomized, Controlled, Double-Blind, Multicenter Study

Inguinal hernia repair is one of the most commonly performed surgical procedures. It is generally performed under regional anesthesia techniques, such as local anesthesia, peripheral nerve blocks, or neuraxial anesthesia (spinal or epidural anesthesia), or under general anesthesia. Despite various available analgesic regimens, numerous studies have demonstrated that postoperative pain control remains inadequate. Opioids, nonsteroidal anti-inflammatory drugs, and analgesics are frequently used for postoperative pain management. However, these medications are associated with uncertain efficacy and undesirable side effects. Pain is a critical factor in the postoperative period, contributing to delayed ambulation and paralytic ileus, ultimately hindering early discharge.

Study Overview

Status

Status

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

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

Inguinal hernia repair is one of the most commonly performed surgical procedures. It is generally performed under regional anesthesia techniques, such as local anesthesia, peripheral nerve blocks, or neuraxial anesthesia (spinal or epidural anesthesia), or under general anesthesia. Despite various available analgesic regimens, numerous studies have demonstrated that postoperative pain control remains inadequate. Opioids, nonsteroidal anti-inflammatory drugs, and analgesics are frequently used for postoperative pain management. However, these medications are associated with uncertain efficacy and undesirable side effects. Pain is a critical factor in the postoperative period, contributing to delayed ambulation and paralytic ileus, ultimately hindering early discharge. Recently, Tulgar and colleagues introduced a novel fascial plane block known as the "quadro-iliac plane block". Quadro-iliac plane block is performed within the quadro-iliac plane, located between the inner surface of the iliac crest and the posterior surface of the quadratus lumborum muscle. In their study, Tulgar et al. bilaterally injected 40 mL of methylene blue into the quadro-iliac plane. They observed widespread dye dispersion along the anterior and posterior surfaces of the quadratus lumborum muscle, transversalis fascia, ilioinguinal, iliohypogastric, subcostal, and genitofemoral nerves, as well as the lumbar plexus. Based on these findings, quadro-iliac plane block has been proposed as a potentially effective technique for managing acute or chronic pain in the lumbosacral, abdominal, and hip regions.

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 (Estimated)

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.
70

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

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:

  • Patients aged 18-65 years
  • Undergoing elective,
  • unilateral laparoscopic inguinal hernia repair
  • Receiving general anesthesia

Exclusion Criteria:

  • Patients who refuse to provide consent
  • Patients with contraindications to regional anesthesia
  • Patients with impaired consciousness
  • Patients with coagulopathy
  • Patients with infections at the block site
  • Emergency cases

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: Triple

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.
Other: control group
All patients will receive IV paracetamol (1 g, 3×1) and IV tenoxicam (20 mg, 2×1). Rescue analgesia (IV tramadol 1 mg/kg) will be administered if Numerical rating scale scores are ≥3. IV ondansetron (4 mg) will be given for nausea and vomiting.
Other: Quadro iliac plane block
Patients in Group Q will be placed in the lateral position. A low-frequency convex transducer and a 100-mm block needle will be used. Following sterilization, the transducer will be placed parasagittally at the distal attachment of the quadratus lumborum muscle to the iliac crest. The iliac crest and quadratus lumborum muscle will be visualized, with the erector spinae muscle above and the psoas major muscle below. Using an in-plane technique, the needle will be directed toward the iliac crest. After confirmation with 5 mL of isotonic sodium chloride, 20 mL of 0.25% bupivacaine will be injected incrementally with intermittent aspiration. The same procedure will be applied to the other party. A total of 40 mL of 0.25% bupivacaine will be administered.
Active Comparator: Quadro iliac plane block
All patients will receive IV paracetamol (1 g, 3×1) and IV tenoxicam (20 mg, 2×1). Rescue analgesia (IV tramadol 1 mg/kg) will be administered if Numerical rating scale scores are ≥3. IV ondansetron (4 mg) will be given for nausea and vomiting. Group Q patients will receive quadro iliac plane block in addition to standard analgesia.
Other: Control group
All patients will receive IV paracetamol (1 g, 3×1) and IV tenoxicam (20 mg, 2×1).

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
The primary outcome is the QoR-15 score (0-150 point) at 24 hours postoperatively.
Time Frame: 24 hours
The primary outcome is the QoR-15 score (0-150 point) at 24 hours postoperatively.
24 hours

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.
Konya City Hospital

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.
March 23, 2025

Primary Completion (Estimated)

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.
June 1, 2026

Study Completion (Estimated)

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.
June 1, 2026

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).
February 25, 2025

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.
March 3, 2025

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.
March 6, 2025

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.
March 11, 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.
March 8, 2026

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.
March 1, 2026

More Information

Terms related to this study

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.
  • QIPB İnguinal hernia

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.

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