patients requiring unilateral total knee replacement
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: - age 50-80 years - ASA physical Health Classification I-II - Body Mass Index (BMI) 7.5 mMol/L - Written informed consent
Exclusion criteria
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 other reason which in the opinion of the investigator makes the patient unsuitable for participation in the study
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Mean total and unbound maximum serum concentration of ropivacaine (Cmax) and mean time to total and unbound maximum serum concentration of ropivacaine (Tmax) | — |
Secondary
| Measure | Time frame |
|---|---|
| Age, weight, height, gender, co-medication, complications and signs of systemic toxicity will be recorded. | — |
Contacts
Sint Maartenskliniek