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Effect of Injection Duration of Fascial Plane Blocks on Block Success

Sponsor: Bursa Yuksek Ihtisas Training and Research Hospital • ClinicalTrials.gov ID: NCT07096765

Registry updated: 2026-10-13

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Description

This prospective observational study aims to evaluate the impact of injection duration during fascial plane blocks on block success and analgesic efficacy in patients undergoing laparoscopic cholecystectomy. The hypothesis is that shorter injection durations increase injection pressure, potentially limiting local anesthetic spread, while longer durations facilitate broader anesthetic distribution.

Interventions

Group O (Drug)
Ultrasound guided External Oblique And Rectus Abdominis Plane (EXORA) Block block (0.3 ml/kg , %0.25 bupivacaine) will be performed Drug: Tramadol 400 mg tramadol, IV 4 mg/ mL tramadol solution into 100 mL normal saline; Patient-controlled analgesia settings: 0.3 mg/kg bolus, 10 mg Demand dose and 20 min lock out interval, six-hour limit infusion to attain 100 mg. Maximum daily dose was set at 400 mg.
Group T (Drug)
Ultrasound guided External Oblique And Rectus Abdominis Plane (EXORA) Block block (0.3 ml/kg , %0.25 bupivacaine) will be performed Drug: Tramadol 400 mg tramadol, IV 4 mg/ mL tramadol solution into 100 mL normal saline; Patient-controlled analgesia settings: 0.3 mg/kg bolus, 10 mg Demand dose and 20 min lock out interval, six-hour limit infusion to attain 100 mg. Maximum daily dose was set at 400 mg.
Group C (Drug)
Ultrasound guided External Oblique And Rectus Abdominis Plane (EXORA) Block block (0.3 ml/kg , %0.25 bupivacaine) will be performed Drug: Tramadol 400 mg tramadol, IV 4 mg/ mL tramadol solution into 100 mL normal saline; Patient-controlled analgesia settings: 0.3 mg/kg bolus, 10 mg Demand dose and 20 min lock out interval, six-hour limit infusion to attain 100 mg. Maximum daily dose was set at 400 mg.

Eligibility criteria

Inclusion Criteria: * Laparoscopic cholecystectomy surgery * Patients with ASA (American Society of Anaesthetists) scores I and III will be included. Exclusion Criteria: * Uncontrolled Arterial Hypertension * Uncontrolled Diabetes Mellitus, * Mental retardation * Antidepressant use * Metabolic disorders * Bleeding diathesis * Patients with a body mass index above 30

Conditions

Nerve Block

Locations

Bursa Yuksek Ihtisas Training and Research Hospital — Bursa, Turkey (Türkiye)

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Official Source

Data sourced from ClinicalTrials.gov, a service of the U.S. National Institutes of Health.

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