E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
patients receiving primary total knee replacement |
Patiënten die een primaire totale knieprothese ondergaan |
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E.1.1.1 | Medical condition in easily understood language |
Patients receiving total knee arthroplasty |
Patiënten bij wie in verband met slijtage van het gewricht het kniegewricht wordt vervangen. |
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E.1.1.2 | Therapeutic area | Analytical, Diagnostic and Therapeutic Techniques and Equipment [E] - Anesthesia and Analgesia [E03] |
MedDRA Classification |
E.1.3 | Condition being studied is a rare disease | No |
E.2 Objective of the trial |
E.2.1 | Main objective of the trial |
The primary objective of this study is to describe a pharmacokinetic profile of total and unbound plasma concentrations of ropivacaine, when used for LIA in TKA surgery without tourniquet. |
Het doel van dit onderzoek is het bepalen van de maximale totale en vrije concentratie ropivacaïne (Cmax en Cumax) en het tijdstip van het bereiken van de maximale en vrije (Tmax en Tumax) concentratie na het zetten van een LIA bij een TKP-operatie wanneer er per-operatief geen bloedleegteband wordt gebruikt.
Samengevat geeft dit de onderzoeksvraag ‘Wat is de farmacokinetiek van 400 mg ropivacaïne bij LIA voor een TKP-operatie, wanneer peroperatief geen bloedleegteband wordt gebruikt?’
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E.2.2 | Secondary objectives of the trial |
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
- age 50-80 years
- ASA physical health classification I – II
- Body Mass Index (BMI) < 40
- patient planned for a primary unilateral posterior-stabilized tri-compartmental cemented total knee replacement (Genesis II - PS) under unilateral spinal anesthesia with 2 mL hyperbaric bupivacaine 0.5%
- scheduled for fast-track protocol TKA
- haemoglobin (Hb) concentration ≥ 7.5 mMol/L
- written informed consent
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- 50-80 jaar
- ASA classificatie I-II
- BMI<40
-Staat op wachtlijst voor unilaterale genesis II TKP-procedure
-Afgesproken anesthesietechniek is spinaalanesthesie (2ml hyperbare bupivacaine 0.5%) met LIA
-revalidatie volgens Fast-track protocol
- hb≥7.5mMol/L
- getekende informed consent formulier |
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E.4 | Principal exclusion criteria |
- Placement of a surgical drain
- Contra-indications for spinal anesthesia
- Known hypersensitivity to amide-type local anesthetics
- Hepatic or renal insufficiency
- Use of fluvoxamine, ciprofloxacin, ketoconazole, erythromycin, clarithromycin, itraconazole, or rifampicin because of their effect on ropivacaine clearance.
- Any reason to perform surgery with the use of a tourniquet
- Any other reason which in the opinion of the investigator makes the patient unsuitable for participation in the study
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- (verwacht) Gebruik van drain(s) postoperatief
- contra-indicatie voor spinaal anesthesie
- bekende overgevoeligheid voor amidetype lokaal anestheticum
- Nier- en/of leverfalen
- Gebruik van fluvoxamine, ciprofloxacine, ketoconazol, erythromycine, claritromycine, itraconazol, of rifampicine vanwege een effect op de klaring van ropivacaïne
- (verwacht) Gebruik van een bloedleegteband
- Enig andere reden die de patiënt ongeschikt maakt voor de studie in de ogen van de onderzoeker (m.n. emotionele of psychologische redenen) |
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E.5 End points |
E.5.1 | Primary end point(s) |
- Mean total and unbound maximum serum concentration of ropivacaine (Cmax and Cumax)
- Mean time to total and unbound maximum serum concentration of ropivacaine (Tmax an Tumax)
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- gemiddelde totale en ongebonden maximum serum concentratie van ropivacaine (Cmax en Cumax)
- gemiddelde tijd tot maximum serum concentratie van totaal en ongebonden ropivacaine (Tmax en Tumax) |
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
baseline and 20, 40, 60, 90 , 120, 240, 360, 480, 600, 720 and 1440 minutes after ropivacain infiltration |
baseline en 20, 40, 60, 90, 120, 240, 360, 480, 600, 720 en 1440 minutes na ropivacaine infiltratie |
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E.5.2 | Secondary end point(s) |
Age, weight, height, gender, co-medication, complications and signs of systemic toxicity will be recorded. |
Leeftijd, gewicht, geslacht, leeftijd, comedicatie en tekenen van systemische toxiciteit |
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
baseline and/or post study |
baseline en of/ tot en met het einde van de studie |
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E.6 and E.7 Scope of the trial |
E.6 | Scope of the trial |
E.6.1 | Diagnosis | No |
E.6.2 | Prophylaxis | No |
E.6.3 | Therapy | No |
E.6.4 | Safety | No |
E.6.5 | Efficacy | No |
E.6.6 | Pharmacokinetic | Yes |
E.6.7 | Pharmacodynamic | No |
E.6.8 | Bioequivalence | No |
E.6.9 | Dose response | No |
E.6.10 | Pharmacogenetic | No |
E.6.11 | Pharmacogenomic | No |
E.6.12 | Pharmacoeconomic | No |
E.6.13 | Others | No |
E.7 | Trial type and phase |
E.7.1 | Human pharmacology (Phase I) | No |
E.7.1.1 | First administration to humans | No |
E.7.1.2 | Bioequivalence study | No |
E.7.1.3 | Other | No |
E.7.1.3.1 | Other trial type description | |
E.7.2 | Therapeutic exploratory (Phase II) | No |
E.7.3 | Therapeutic confirmatory (Phase III) | No |
E.7.4 | Therapeutic use (Phase IV) | Yes |
E.8 Design of the trial |
E.8.1 | Controlled | No |
E.8.1.1 | Randomised | No |
E.8.1.2 | Open | No |
E.8.1.3 | Single blind | No |
E.8.1.4 | Double blind | No |
E.8.1.5 | Parallel group | No |
E.8.1.6 | Cross over | No |
E.8.1.7 | Other | Yes |
E.8.1.7.1 | Other trial design description |
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E.8.2 | Comparator of controlled trial |
E.8.2.1 | Other medicinal product(s) | No |
E.8.2.2 | Placebo | No |
E.8.2.3 | Other | No |
E.8.3 |
The trial involves single site in the Member State concerned
| Yes |
E.8.4 | The trial involves multiple sites in the Member State concerned | No |
E.8.5 | The trial involves multiple Member States | No |
E.8.6 Trial involving sites outside the EEA |
E.8.6.1 | Trial being conducted both within and outside the EEA | No |
E.8.6.2 | Trial being conducted completely outside of the EEA | No |
E.8.7 | Trial has a data monitoring committee | No |
E.8.8 |
Definition of the end of the trial and justification where it is not the last
visit of the last subject undergoing the trial
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The end point is defined as the last patient's last sampling |
Eindpunt van de trial is gedefinieerd als de laatste bloedafname bij de twintigste patiënt |
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E.8.9 Initial estimate of the duration of the trial |
E.8.9.1 | In the Member State concerned years | |
E.8.9.1 | In the Member State concerned months | 3 |
E.8.9.1 | In the Member State concerned days | |