The effects of various concentrations of ropivacaine on the onset and duration of ultrasound-guided ankle blocks in patients undergoing hallux valgus repair surgery – a randomized, double-blinded, parallel-group interventional study

Ziekenhuis Oost Limburg0 个研究点目标入组 126 人开始时间: 2024年1月22日最近更新: 2024年7月22日

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•Provide signed consent and dated informed consent, Age 18 up to and including 75 years, scheduled for elective forefoot surgery for hallux valgus repair under unilateral ankle block at ZOL Genk, American Society of Anesthesiologists (ASA) physical status I-II-III, Able to ambulate (ability to walk independently, without assistive devices), Able to learn and perform study sensory and motor assessment by exhibiting sensitivity to pinprick, cold, and light touch (tested beforehand with pinprick, cold, light touch sensation test) as the patient will have to perform these sensory and motor assessments by themselves at home at postoperative days 0 to 2

•Language barrier, Preexisting lower extremity neuropathy, Contraindications to ankle block (local infection, edema, burn, soft tissue trauma, or distorted anatomy with scarring in the area of block placement), Contraindications for use of non-steroidal anti-inflammatory drugs (NSAIDs), Allergy to local anesthetics, Uncontrolled anxiety, psychiatric or neurological disorder that might interfere with study assessment, Weight below 50 kg (based on a maximum dose of 3 mg/kg ropivacaine and a maximum dose of 150 mg ropivacaine), Preoperative use of opioids or gabapentin less than 3 days before surgery

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