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Blood Bupivacaine Concentration After Regional Block Applications in Pediatric Patients

Blood Bupivacaine Concentration After Transversus Abdominis Plane Block and Quadratus Lumborum Block in Pediatric Patients: A Randomized Controlled Trial

Status
Not yet recruiting
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07256535
Enrollment
20
Registered
2025-12-01
Start date
2026-01-25
Completion date
2026-06-25
Last updated
2025-12-17

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

Conditions

Blood Bupivacaine Concentration

Keywords

Pediatric Population, Transversus Abdominis Plan Block, Quadratus Lumborum Block, Bupivacaine

Brief summary

Analgesia methods such as systemic analgesics, quadratus lumborum block, and transversus abdominis plane block are used for pain management after lower abdominal surgery. Quadratus lumborum block (QLB) requires the patient to be in the lateral decubitus position, and the drug injection point is deeper. Transversus abdominis plane (TAP) block, on the other hand, can be performed with the patient supine, and the drug injection point is more superficial. However, while TAP block has no effect on visceral pain, QLB is also effective in visceral pain. Furthermore, although the injection point for QLB is deep, systemic absorption of the drug is expected to be lower than with TAP block due to its distance from vascular structures. Consequently, blood local anesthetic concentrations and the risk of local anesthetic systemic toxicity (LAST) are also expected to be lower. Despite the deeper injection, it is expected to provide better analgesia and a lower risk of LAST, making it superior to TAP block. This study aimed to compare the postoperative pain relief effect of quadratus lumborum block and transversus abdominis plane block, routinely performed in the clinic to prevent postoperative pain in pediatric patients undergoing inguinal hernia surgery, using the FLACC (Face, Leg Mobility, Activity, Crying, and Consolability) score for blood bupivacaine dose after drug injection. Based on these data, if lower blood drug concentrations are detected in patients undergoing QLB, the investigators aim to implement this technique routinely in clinical practice.

Interventions

PROCEDURETransversus Abdominis Plane Block

transversus abdominis plane block will be performed using 0.25-0.5% cc/kg bupivacaine

PROCEDUREQuadratus Lumborum Block

Quadratus Lumborum Block will be performed using 0.25-0.5% cc/kg bupivacaine

Sponsors

Kocaeli University
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
1 Years to 6 Years
Healthy volunteers
No

Inclusion criteria

* Patients undergoing elective inguinal hernia surgery. * 1-6 years of age * ASA I-II patients

Exclusion criteria

* Vulnerable populations such as those incapacitated, those in intensive care, those unconscious, those unable to give personal consent, or impressionable individuals will not be included in the study. * Although pediatric patients who may be considered a vulnerable population will be included in the study, patients with serious illnesses such as ASA III-IV will not be included in this group. * Patients who refuse to participate in the observational study, their parents/legal guardians, * Patients with incomplete data * Patients who underwent surgery with an incision other than the planned one for any reason.

Design outcomes

Primary

MeasureTime frameDescription
Blood bupivacaine level30 and 60 minutes after block applicationAfter the block application, 2 mL of blood will be taken into a routine biochemistry tube and the blood bupivacaine level will be measured.
FLACC (Face, Leg Mobility, Activity, Crying, Consolation)0.HOUR, 1.HOUR, 2.HOUR, 4.HOUR, 6.HOUR, 12.HOUR 24.HOURTo compare postoperative pain efficacy with FLACC (Face, Leg Mobility, Activity, Crying, Consolability) Minimum score is 0 (no pain), maximum score 10 (the worse pain).

Countries

Turkey (Türkiye)

Contacts

Primary ContactCan AKSU, Prof.
dr.aksu@gmail.com05332568290

Outcome results

None listed

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