This study aims to compare the analgesic efficacy and functional outcomes of blocking the nerve to the vastus lateralis (NVL) muscle versus the lateral femoral cutaneous nerve (LFCN).
Knee surgeries are associated with significant postoperative pain, which can impede early mobilization and prolong recovery. Recent advancements in ultrasound-guided regional anesthesia have enabled more targeted nerve blocks, such as the blockade of the nerve to the vastus lateralis (NVL) and the lateral femoral cutaneous nerve (LFCN)
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Enrollment
80
Patients received vastus lateralis nerve block with 5 ml of bupivacaine 0.5%.
Patients received lateral femoral cutaneous nerve block with 5 ml of bupivacaine 0.5%.
Kafrelsheikh University
Kafr ash Shaykh, Kafrelsheikh, Egypt
RECRUITINGDegree of pain
Each patient will be instructed about postoperative pain assessment using the numeric rating scale (NRS) score (0 represents "no pain" while 10 represents "the worst pain imaginable"). NRS assessments will be conducted at the post-anesthesia care unit (PACU) and at 2, 4, 6, 12, 18, and 24 hours postoperatively.
Time frame: 24 hours postoperatively
Time to first request for analgesia
The time to first request for analgesia will be recorded from the end of surgery till the first dose of morphine is administered.
Time frame: 24 hours postoperatively
Total morphine consumption
If the numeric rating scale (NRS) exceeded 3, rescue analgesia in the form of a 3 mg morphine bolus will be administered, to be repeated after 30 minutes if the pain persisted until the NRS dropped below 4.
Time frame: 24 hours postoperatively
Block performance time
The block performance time will be recorded from the placement of the ultrasound probe to the removal of the needle after the injection of local anaesthetic.
Time frame: Intraoperatively
Degree of patient satisfaction
The degree of patient satisfaction will be measured using a 5-point Likert scale (1 = extremely dissatisfied, 2 = unsatisfied, 3 = neutral, 4 = satisfied, 5 = extremely satisfied).
Time frame: 24 hours postoperatively
Length of hospital stay
Length of hospital stay will be recorded from admission till discharge from the hospital.
Time frame: Till the discharge from hospital (Up to one week).
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Incidence of adverse events
Incidence of adverse events such as postoperative nausea and vomiting (PONV), respiratory depression, and local anesthetic (LA) toxicity will be recorded.
Time frame: 24 hours postoperatively