Postoperative Analgesic Efficacy of Adjuvant Quadratus Lumborum Block in Open Inguinal Hernia Surgery

NCT ID: NCT06664164

Last Updated: 2025-08-28

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

67 participants

Study Classification

INTERVENTIONAL

Study Start Date

2024-11-01

Study Completion Date

2025-08-13

Brief Summary

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Evaluation of Postoperative Analgesic Efficacy of Adjuvant Use in Quadratus Lumborum Blocks

Detailed Description

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primary aim : Compare the time to first rescue analgesia in patients following the application of non-adjuvant Quadratus Lumborum Block and adjuvant Quadratus Lumborum Block for postoperative analgesia after inguinal hernia surgeries performed under spinal anesthesia.

secondary aims are to: to compare and evaluate the total analgesic consumption over 24 hours Compare NRS (Numerical Rating Scale) values (at rest and dynamic) in patients during postoperative follow-ups at 4, 8, 12, and 24 hours.

Compare side effects such as postoperative nausea and vomiting. In trunk blocks, local anesthesia is applied to the interfascial area between the abdominal wall or back muscles. Local anesthetics and steroids are used for this purpose. The analgesic efficacy of steroids is known from their perineural applications. Due to the lack of blood circulation and vascularization in the interfascial area, the absorption of local anesthetics is slow, providing prolonged analgesic effects. Trunk blocks applied in these regions are used as part of multimodal analgesia. The effectiveness of trunk blocks may vary based on the patient's anatomical differences and previous surgeries, but analgesic efficacy is generally observed for an average of 8-12 hours. the investigators believe that with the use of adjuvants, these durations will be extended, and analgesic efficacy will increase.

In this study, it is planned to add a total of 8 mg of dexamethasone to the local anesthetic agent for patients undergoing adjuvant anterior Quadratus Lumborum Block. In studies conducted in the field of trunk blocks, the expected duration of analgesia is an average of 8-12 hours. In this study, the block application is planned to be preoperative. Dexamethasone was chosen as an adjuvant to extend the expected analgesia duration of 8-12 hours and to increase analgesic efficacy. Dexamethasone is known to be effective and safe when used as an adjuvant in all nerve blocks.

To reduce opioid-related side effects such as nausea, vomiting, itching, constipation, and dependence associated with opioid medications used in postoperative analgesia for inguinal hernia surgeries, opioid-sparing analgesia and regional techniques are being employed. Quadratus Lumborum Blocks are being safely and easily performed and are frequently preferred in abdominal surgery due to recent advancements in trunk block techniques and ultrasound technology.

This study aims to evaluate the postoperative analgesic efficacy of adjuvant and non-adjuvant anterior Quadratus Lumborum Blocks in patients undergoing inguinal hernia surgery. The investigators predict that the analgesic efficacy of the adjuvant Quadratus Lumborum Block will be more effective and longer-lasting.

Conditions

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Pain, Postoperative

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

SUPPORTIVE_CARE

Blinding Strategy

TRIPLE

Participants Investigators Outcome Assessors
Everyone except the person preparing the medication for the patient will be blinded. The person performing the block, the participants, and those monitoring during the postoperative period will be blinded to the study.

Study Groups

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QLB Group

anterior quadratus lumborum block group

Group Type ACTIVE_COMPARATOR

ANTERİOR QUADRATUS LUMBORUM BLOCK

Intervention Type PROCEDURE

Patients are placed in the lateral decubitus position. The area where the block will be applied is disinfected with povidine iodine. A convex ultrasound probe is placed on the midaxillary line above the iliac crest. By visualizing the transverse process adjacent to the psoas major and quadratus lumborum muscles, using the in-plane technique, using a 22 gauge 80 mm peripheral block needle after negative aspiration into the anterior layer of the thoracolumbar fascia anterior to the quadratus lumborum muscle muscle, 0.5-1 ml of serum After observing hydrodissection with physiological, 20 ml of 0.25% bupivacaine is injected.

adjuvant QLB Group

with adjuvant anterior quadratus lumborum block group

Group Type ACTIVE_COMPARATOR

ANTERİOR QUADRATUS LUMBORUM BLOCK WİTH ADJUVANT

Intervention Type PROCEDURE

Patients are placed in the lateral decubitus position. The area where the block will be applied is disinfected with povidine iodine. A convex ultrasound probe is placed on the midaxillary line above the iliac crest. By visualizing the transverse process adjacent to the psoas major and quadratus lumborum muscles, using the in-plane technique, using a 22 gauge 80 mm peripheral block needle after negative aspiration into the anterior layer of the thoracolumbar fascia anterior to the quadratus lumborum muscle muscle, 0.5-1 ml of serum After observing hydrodissection with physiological, 20 ml of 0.25% bupivacaine and 8 mg de-xamethasone are injected.

Interventions

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ANTERİOR QUADRATUS LUMBORUM BLOCK

Patients are placed in the lateral decubitus position. The area where the block will be applied is disinfected with povidine iodine. A convex ultrasound probe is placed on the midaxillary line above the iliac crest. By visualizing the transverse process adjacent to the psoas major and quadratus lumborum muscles, using the in-plane technique, using a 22 gauge 80 mm peripheral block needle after negative aspiration into the anterior layer of the thoracolumbar fascia anterior to the quadratus lumborum muscle muscle, 0.5-1 ml of serum After observing hydrodissection with physiological, 20 ml of 0.25% bupivacaine is injected.

Intervention Type PROCEDURE

ANTERİOR QUADRATUS LUMBORUM BLOCK WİTH ADJUVANT

Patients are placed in the lateral decubitus position. The area where the block will be applied is disinfected with povidine iodine. A convex ultrasound probe is placed on the midaxillary line above the iliac crest. By visualizing the transverse process adjacent to the psoas major and quadratus lumborum muscles, using the in-plane technique, using a 22 gauge 80 mm peripheral block needle after negative aspiration into the anterior layer of the thoracolumbar fascia anterior to the quadratus lumborum muscle muscle, 0.5-1 ml of serum After observing hydrodissection with physiological, 20 ml of 0.25% bupivacaine and 8 mg de-xamethasone are injected.

Intervention Type PROCEDURE

Eligibility Criteria

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Exclusion Criteria

* local anesthetic allergy
* Infection at the procedure site
* Body Mass Index \>35 kg/m2
* Anticoagulant use with bleeding disorder
* Chronic analgesia and opioid use -with mental and psychiatric disorders -
Minimum Eligible Age

18 Years

Maximum Eligible Age

65 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Gaziosmanpasa Research and Education Hospital

OTHER_GOV

Sponsor Role lead

Responsible Party

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SERPİL ŞEHİRLİOĞLU

principal investigator

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Serpil Sehirlioglu, MD

Role: PRINCIPAL_INVESTIGATOR

Gaziosmanpasa Research and Training Hospital

Locations

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Gaziosmanpasa Research and Training Hospital

Istanbul, , Turkey (Türkiye)

Site Status

Countries

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Turkey (Türkiye)

References

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Priyadarshini K, Behera BK, Tripathy BB, Misra S. Ultrasound-guided transverse abdominis plane block, ilioinguinal/iliohypogastric nerve block, and quadratus lumborum block for elective open inguinal hernia repair in children: a randomized controlled trial. Reg Anesth Pain Med. 2022 Apr;47(4):217-221. doi: 10.1136/rapm-2021-103201. Epub 2022 Jan 17.

Reference Type BACKGROUND
PMID: 35039439 (View on PubMed)

Favaro ML, Gabor S, Souza DBF, Araujo AA, Milani ALC, Ribeiro Junior MAF. Quadratus Lumborum Block As A Single Anesthetic Method For Laparoscopic Totally Extraperitoneal (Tep) Inguinal Hernia Repair: A Randomized Clinical Trial. Sci Rep. 2020 May 22;10(1):8526. doi: 10.1038/s41598-020-65604-x.

Reference Type BACKGROUND
PMID: 32444629 (View on PubMed)

Other Identifiers

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GAZIAOSMANPASA TREHAQ

Identifier Type: -

Identifier Source: org_study_id

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