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Bupivacaine-Lidocaine vs Bupivacaine for Ultrasound-Guided Popliteal Sciatic Nerve Block

RecruitingNAAges 18 Years - 65 YearsAllAtaturk University
NCT07550348 on ClinicalTrials.gov ↗
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In plain words

What the trial is, and whether it could suit you

This prospective, randomized, double-blind clinical trial aims to compare the efficacy of two local anesthetic regimens for ultrasound-guided popliteal sciatic nerve block in adult patients undergoing elective distal lower extremity surgery. Eligible participants (ages 18-65, ASA physical status I-III, BMI 18-35 kg/m²) will be randomized into two equal groups of 30. Patients in Group BL will receive a combination of 10 mL 2% lidocaine and 10 mL 0.5% bupivacaine, while patients in Group B will receive 20 mL 0.5% bupivacaine alone, administered via ultrasound-guided popliteal sciatic nerve block prior to surgery. The primary outcome is the onset time of sensory and motor blockade. Secondary outcomes include block success rate, duration of sensory and motor block, postoperative opioid consumption, pain scores assessed by the Numeric Rating Scale (NRS) at 2, 4, 8, 12, and 24 hours postoper

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📋 Eligibility rules (as published)
Inclusion Criteria: * Age between 18 and 65 years * American Society of Anesthesiologists (ASA) physical status classification I, II, or III * Scheduled for elective distal lower extremity surgery (below-knee) * Body mass index (BMI) between 18 and 35 kg/m² * Provision of written informed consent Exclusion Criteria: * Refusal to participate in the study * Morbid obesity (BMI ≥35 kg/m²) * Known allergy or hypersensitivity to any local anesthetic agent * Severe cardiac, hepatic, or renal disease * Pre-existing neurological deficits or peripheral neuropathy * Use of anticoagulant therapy * History of prior surgery or significant scar tissue in the popliteal fossa * Pregnancy * Chronic opioid use at home
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What it tests

  • Bupivacaine-Lidocaine Combination
  • Bupivacaine
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Where

1 site
Ataturk University
Erzurum, Turkey (Türkiye)
🤝 Taking part is your choice, and you can leave at any time. Only the trial team can confirm you are eligible — always decide together with your own doctor.
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