About this trial
This study aims to evaluate the effects of different postoperative analgesic approaches on postoperative delirium in elderly patients undergoing total knee arthroplasty.
Eligibility criteria
This trial accepts healthy volunteersQualifiers
Patients undergoing elective unilateral total knee arthroplasty under spinal anesthesia
ASA physical status I-III
Age ≥60 years
Body mass index (BMI) between 18-30 kg/m²
Disqualifiers
Refusal to participate in the study or inability to provide written informed consent
American Society of Anesthesiologists (ASA) physical status IV or higher
Obese patients (BMI >30 kg/m²) or cachectic patients (BMI <18 kg/m²)
Patients requiring general anesthesia or in whom spinal anesthesia could not be achieved
Trial design
Parallel
Treatments tested in this trial
adductor canal block and biFes block including bupivacain
DrugParticipants in this arm received postoperative analgesia via ultrasound-guided adductor canal block combined with BiFes block using 20 mL of 0.25% bupivacaine for each block following total knee arthroplasty under spinal anesthesia.
Periarticular infiltration
DrugParticipants in this arm received postoperative analgesia with periarticular infiltration consisting of 100 mg bupivacaine, 40 mg methylprednisolone, 0.5 mg adrenaline and salin solution during total knee arthroplasty under spinal anesthesia.
Treatment groups
Trial outcomes
Primary outcomes
Postoperative Delirium
Postoperative delirium incidence assessed using the Diagnostic Interview for the Confusion Assessment Method (3D-CAM) in patients with a Mini-Mental State Examination score greater than 24.
Secondary outcomes
NRS ( Numeric Rating Scale )
11-point numerical rating scale for pain (0='no pain' and 10='worst pain possible pain') were explained.
Rescue Opioid Requirement
The need for rescue opioid use and the administered dose will be recorded for each patient.
Time to discharge
Time to discharge will be defined as the duration from the end of surgery to hospital discharge, measured in hours.
Patient Satisfaction Score
Patient satisfaction will assess prior to discharge using a Likert scale type (range, 1 to 10) verbally administered questionnaire.
Locations
Sponsors and contacts
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