Adductor Canal Block: Continuous Infusion Versus Automatic Intermittent Bolus

Study Overview
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Brief Summary
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The aim of this prospective, randomized , blinded study is to compare two different infusion techniques (continuous VS intermittent automatic bolus) to assess the effects of postoperative analgesia after Day-Case anterior cruciate ligament (ACL) reconstruction.

Official Title
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Adductor Canal Block: Continuous Infusion Versus Automatic Intermittent Bolus For Postoperative Analgesia After Day-Case Anterior Cruciate Ligament Reconstruction

Conditions
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Injury of Anterior Cruciate Ligament

Intervention / Treatment
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* Procedure: Continuous Infusion of ropivacaine 0.2%
* Procedure: Automatic Intermittent Bolus of ropivacaine 0.2%


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Age above 18 years old American society of anesthesiology (ASA) physical status I-II Signed informed consensus Exclusion Criteria: ASA >II Unstable neurological disease Diabetic mellitus (DM) type I-II Allergy to used drugs Opioid chronic treatment Consensus refusal or not valid Anticoagulant therapy Postoperative intensive care required

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Active Comparator: Continuous Infusion<br>Patients receive a postoperative continuous infusion of Ropivacaine 0,2% at 6 ml/h and 4 ml PCA bolus, lockout 20 minutes via electronic infusion pump (Micrel device, Greece). | Procedure: Continuous Infusion of ropivacaine 0.2%<br>* Postoperative continuous infusion of Ropivacaine 0,2% at 6 ml/h and 4 ml PCA bolus, lockout 20 minutes via electronic infusion pump (Micrel device, Greece).<br>* Other names: naropine 0.2%;|
| Experimental: Automatic Intermittent Bolus<br>Patients receive a postoperative Automatic Intermittent Bolus of 6 ml Ropivacaine 0,2% and 4 ml PCA bolus, lockout 20 minutes every hour via electronic infusion pump (Micrel device, Greece). | Procedure: Automatic Intermittent Bolus of ropivacaine 0.2%<br>* Postoperative Automatic Intermittent Bolus of 6 ml Ropivacaine 0,2% every hour and 4 ml PCA bolus, lockout 20 minutes via electronic infusion pump (Micrel device, Greece).<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| NRS Score | Evaluation of numeric rating score (NRS) in patient with automatic intermittent bolus of Ropivacaine 0,2% instead of classic continuous perfusion | 72h postoperative | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Up and Go test | up and go test: time need to get up from a chair, walk for 3 meters, and come back to seat down on the chair | 72h postoperative | 
| Opioids request | Opioids consumption will be recorded throughout 72 postoperative hours | 72h postoperative | 
| Local anesthetic consumption | Evaluation of local anesthesia consumption every 6h in first 72 postoperative hours. | 72h postoperative | 
| 10mt walk test | time need to walk 10 meters | 72h postoperative |