Motor-Sparing Femoral Nerve Block Dose
Minimum Effective Concentration of Bupivacaine for Motor-Sparing Femoral Nerve Block
Femoral nerve blocks are commonly used to provide pain control for total knee replacement, anterior cruciate ligament (ACL) reconstruction. Commonly employed local anesthetic concentrations result in motor block of the quadriceps and constitute an inherent risk factor for patient fall.
The aim of this study is to determine the minimum effective concentration of bupivacaine in 90 % of patients (MEC90) required for a motor-sparing, successful sensory block of the femoral nerve.
연구 개요
상태
상세 설명
With the approval of Ethics Committee of the University of Chile Clinical Hospital, approximately 60 patients undergoing ACL repair or TKR will be recruited. All blocks will be conducted preoperatively in an induction room.Dose assignation will be done using an up-and-down sequential method, where the dose of each subsequent patient depends on the response of the previous patient, called the Biased Coin Design.
The assignment of each subsequent concentration will be based on the response of the previous patient.As soon as we recruit 45 patients with random dose assignment, we will terminate the enrollment procedure.
The injectate will be prepared and administered by a research assistant using syringes connected to the block needle. The operator and the patient will be blinded to the concentration injected.
연구 유형
등록 (실제)
단계
- 4단계
연락처 및 위치
연구 장소
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Metropolitan
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Santiago, Metropolitan, 칠레, 8380456
- Hospital Clinico Universidad de Chile
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참여기준
자격 기준
공부할 수 있는 나이
건강한 자원 봉사자를 받아들입니다
연구 대상 성별
설명
Inclusion Criteria:
- Age between 18 and 75 years
- American Society of Anesthesiologists classification 1-3
- Body mass index between 20 and 35
Exclusion Criteria:
- Adults who are unable to give their own consent
- Pre-existing neuropathy (assessed by history and physical examination)
- Coagulopathy (assessed by history and physical examination and, if deemed clinically necessary, by blood work up i.e. platelets≤ 100, International Normalized Ratio≥ 1.4 or partial prothrombin time ≥ 50)
- Renal failure (assessed by history and physical examination and, if deemed clinically necessary, by blood work up i.e. creatinine ≥ 100)
- Hepatic failure (assessed by history and physical examination and, if deemed clinically necessary, by blood work up i.e. transaminases ≥ 100)
- Allergy to LA
- Pregnancy
- Prior surgery in the inguinal region
- Chronic pain syndromes requiring opioid intake at home
공부 계획
연구는 어떻게 설계됩니까?
디자인 세부사항
- 주 목적: 지지 요법
- 할당: 무작위
- 중재 모델: 병렬 할당
- 마스킹: 더블
무기와 개입
참가자 그룹 / 팔 |
개입 / 치료 |
|---|---|
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실험적: same dose
patient is exposed to the same previously successful dose
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patient is exposed to the same concentration than previously successful one
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실험적: lower dose
patient is exposed to a lower concentration dose
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patient is exposed to a lower concentration than previously successful one
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연구는 무엇을 측정합니까?
주요 결과 측정
결과 측정 |
기간 |
|---|---|
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Minimum Bupivacaine Analgesic concentration preserving quadriceps strength analgesia
기간: 5 months
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5 months
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공동 작업자 및 조사자
수사관
- 연구 책임자: DE QH TRAN, MD, FRCPC, McGill University Health Centre/Research Institute of the McGill University Health Centre
간행물 및 유용한 링크
일반 간행물
- Schiferer A, Gore C, Gorove L, Lang T, Steinlechner B, Zimpfer M, Kober A. A randomized controlled trial of femoral nerve blockade administered preclinically for pain relief in femoral trauma. Anesth Analg. 2007 Dec;105(6):1852-4, table of contents. doi: 10.1213/01.ane.0000287676.39323.9e.
- Biboulet P, Morau D, Aubas P, Bringuier-Branchereau S, Capdevila X. Postoperative analgesia after total-hip arthroplasty: Comparison of intravenous patient-controlled analgesia with morphine and single injection of femoral nerve or psoas compartment block. a prospective, randomized, double-blind study. Reg Anesth Pain Med. 2004 Mar-Apr;29(2):102-9. doi: 10.1016/j.rapm.2003.11.006.
- Dauri M, Sidiropoulou T, Fabbi E, Giannelli M, Faria S, Mariani P, Sabato AF. Efficacy of continuous femoral nerve block with stimulating catheters versus nonstimulating catheters for anterior cruciate ligament reconstruction. Reg Anesth Pain Med. 2007 Jul-Aug;32(4):282-7. doi: 10.1016/j.rapm.2006.06.249.
- Johnson RL, Kopp SL, Hebl JR, Erwin PJ, Mantilla CB. Falls and major orthopaedic surgery with peripheral nerve blockade: a systematic review and meta-analysis. Br J Anaesth. 2013 Apr;110(4):518-28. doi: 10.1093/bja/aet013. Epub 2013 Feb 24.
- Casati A, Fanelli G, Beccaria P, Magistris L, Albertin A, Torri G. The effects of single or multiple injections on the volume of 0.5% ropivacaine required for femoral nerve blockade. Anesth Analg. 2001 Jul;93(1):183-6. doi: 10.1097/00000539-200107000-00036.
- Jaeger P, Koscielniak-Nielsen ZJ, Hilsted KL, Fabritius ML, Dahl JB. Adductor Canal Block With 10 mL Versus 30 mL Local Anesthetics and Quadriceps Strength: A Paired, Blinded, Randomized Study in Healthy Volunteers. Reg Anesth Pain Med. 2015 Sep-Oct;40(5):553-8. doi: 10.1097/AAP.0000000000000298.
- Lu YM, Lin JH, Hsiao SF, Liu MF, Chen SM, Lue YJ. The relative and absolute reliability of leg muscle strength testing by a handheld dynamometer. J Strength Cond Res. 2011 Apr;25(4):1065-71. doi: 10.1519/JSC.0b013e3181d650a6.
- Lu TW, Hsu HC, Chang LY, Chen HL. Enhancing the examiner's resisting force improves the reliability of manual muscle strength measurements: comparison of a new device with hand-held dynamometry. J Rehabil Med. 2007 Nov;39(9):679-84. doi: 10.2340/16501977-0107.
- Tran DQ, Dugani S, Dyachenko A, Correa JA, Finlayson RJ. Minimum effective volume of lidocaine for ultrasound-guided infraclavicular block. Reg Anesth Pain Med. 2011 Mar-Apr;36(2):190-4. doi: 10.1097/AAP.0b013e31820d4266.
- Stylianou M, Flournoy N. Dose finding using the biased coin up-and-down design and isotonic regression. Biometrics. 2002 Mar;58(1):171-7. doi: 10.1111/j.0006-341x.2002.00171.x.
연구 기록 날짜
연구 주요 날짜
연구 시작 (실제)
기본 완료 (실제)
연구 완료 (실제)
연구 등록 날짜
최초 제출
QC 기준을 충족하는 최초 제출
처음 게시됨 (추정)
연구 기록 업데이트
마지막 업데이트 게시됨 (실제)
QC 기준을 충족하는 마지막 업데이트 제출
마지막으로 확인됨
추가 정보
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