Clinical trial NCT03376178: Catheter Orifice Configuration (Six-hole Versus End-hole) on Post-operative Analgesia After Total Knee Arthroplasty.
Official title: Ultrasound-guided Continuous Femoral Nerve Block: The Influence of Catheter Orifice Configuration (Six-hole Versus End-hole) on Post-operative Analgesia After Total Knee Arthroplasty. A Randomized Trial.
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: NA
Conditions: Pain
Keywords: multiorifice or endhole femoral nerve catheter
Lead sponsor: University Hospital, Geneva
Sponsor class: OTHER
First posted: 2017-12-18
Enrollment: 72
Sex: ALL
Minimum age (years): 18
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: RANDOMIZED
Intervention model: PARALLEL
Intervention model description: Eighty adult patients (aged ≥18 years) scheduled to undergo primary total knee arthroplasty under a combination of CFNB, sciatic nerve block and general anesthesia were randomized to CFNB using either a 3-pair micro-hole (Contiplex, BRAUN®, 20G - 400 mm) or an end-hole (Silverstim VYGON®, 20G - 500 mm) catheter. Once the femoral catheter was sited, a bolus of 20 mL lidocaine 1% was injected. An electronic pump then delivered an automated 5 mL bolus of ropivacaine 0.2% hourly, with 10 mL self-administered patient controlled analgesia boluses.
Primary purpose: TREATMENT

Brief summary: Multiorifice catheters have been shown to provide superior analgesia and significantly reduce local anesthetic consumption compared with end-hole catheters in epidural studies. This prospective, blinded, randomized study tested the hypothesis that, in continuous femoral nerve block (CFNB) under ultrasound guidance, multiorifice catheter would reduce local anesthetic consumption at 24h compared with end-hole catheter.

Detailed description: Eighty adult patients (aged ≥18 years) scheduled to undergo primary total knee arthroplasty under a combination of continuous femoral nerve block (CFNB), sciatic nerve block and general anesthesia were randomized to CFNB using either a 3-pair micro-hole (Contiplex, BRAUN®, 20G - 400 mm) or an end-hole (Silverstim VYGON®, 20G - 500 mm) catheter. Once the femoral catheter was sited, a bolus of 20 mL lidocaine 1% was injected. An electronic pump then delivered an automated 5 mL bolus of ropivacaine 0.2% hourly, with 10 mL self-administered patient controlled analgesia boluses.

Eligibility criteria: Inclusion Criteria:

* every patient accepting a conitnuous femoral nerve catheter

Exclusion Criteria:

* pregnancy,
* any contraindication to peripheral nerve blockade,
* pre-existing peripheral nerve neuropathy,
* allergy to LA (study medications),
* ASA score ≥4,
* neurologic or neuromuscular disease,
* psychiatric disease,
* renal failure,
* hepatic failure,
* chronic opioid therapy,
* NSAID contraindication,
* inability to use a patient controlled analgesia (PCA) device, g
* enu valgum,
* infection at the injection site or
* withdrawal of consent.

Primary outcomes:
measure: total LA consumption at 24h
timeFrame: 24h after connecting PCA to the femoral nerve catheter
Secondary outcomes:
measure: total LA consumption at 48h
timeFrame: 48h after connecting PCA to the femoral nerve catheter
measure: number of boluses of ropivacaine at 24h
timeFrame: 24h after connecting PCA to the femoral nerve catheter
measure: number of boluses of ropivacaine at 48 h
timeFrame: 48h after connecting PCA to the femoral nerve catheter
measure: quadriceps strength before surgery and 24h and 48h after surgery
timeFrame: quadriceps strenght before performing femoral nerve block and 24 and 48h after performing the block
measure: morphine requirements at 24h and 48h
timeFrame: morphine consumption at 24h and 48h after completion of surgery
Other outcomes:
Locations:
city: Geneva
country: Switzerland
facility: University hospitals of Geneva
Study officials:
affiliation: Anesthesiology department Of University Hospital of Geneva
name: Martin Tramer
role: STUDY_DIRECTOR
References:
citation: Paul JE, Arya A, Hurlburt L, Cheng J, Thabane L, Tidy A, Murthy Y. Femoral nerve block improves analgesia outcomes after total knee arthroplasty: a meta-analysis of randomized controlled trials. Anesthesiology. 2010 Nov;113(5):1144-62. doi: 10.1097/ALN.0b013e3181f4b18.
citation: Lang SA. Postoperative analgesia following total knee arthroplasty: a study comparing spinal anesthesia and combined sciatic femoral 3-in-1 block. Reg Anesth Pain Med. 1999 Jan-Feb;24(1):97. doi: 10.1016/s1098-7339(99)90176-1. No abstract available.
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citation: Brodner G, Buerkle H, Van Aken H, Lambert R, Schweppe-Hartenauer ML, Wempe C, Gogarten W. Postoperative analgesia after knee surgery: a comparison of three different concentrations of ropivacaine for continuous femoral nerve blockade. Anesth Analg. 2007 Jul;105(1):256-62. doi: 10.1213/01.ane.0000265552.43299.2b.
citation: Sia AT, Lim Y, Ocampo C. A comparison of a basal infusion with automated mandatory boluses in parturient-controlled epidural analgesia during labor. Anesth Analg. 2007 Mar;104(3):673-8. doi: 10.1213/01.ane.0000253236.89376.60.
citation: Fredrickson MJ, Abeysekera A, Price DJ, Wong AC. Patient-initiated mandatory boluses for ambulatory continuous interscalene analgesia: an effective strategy for optimizing analgesia and minimizing side-effects. Br J Anaesth. 2011 Feb;106(2):239-45. doi: 10.1093/bja/aeq320. Epub 2010 Nov 25.
citation: Fredrickson MJ, Ball CM, Dalgleish AJ. Catheter orifice configuration influences the effectiveness of continuous peripheral nerve blockade. Reg Anesth Pain Med. 2011 Sep-Oct;36(5):470-5. doi: 10.1097/AAP.0b013e318228d4ce.
citation: Michael S, Richmond MN, Birks RJ. A comparison between open-end (single hole) and closed-end (three lateral holes) epidural catheters. Complications and quality of sensory blockade. Anaesthesia. 1989 Jul;44(7):578-80. doi: 10.1111/j.1365-2044.1989.tb11446.x.
citation: Novello-Siegenthaler A, Hamdani M, Iselin-Chaves I, Fournier R. Ultrasound-guided continuous femoral nerve block: a randomized trial on the influence of femoral nerve catheter orifice configuration (six-hole versus end-hole) on post-operative analgesia after total knee arthroplasty. BMC Anesthesiol. 2018 Dec 19;18(1):191. doi: 10.1186/s12871-018-0648-8.