About this trial
The purpose of this clinical trial study is to compare the analgesic effects of ultrasound-guided intermediate cervical plexus block Versus cervical erector spinae block in patients undergoing anterior cervical spine surgery.
* The main questions it aims to answer are:
* The primary outcome will be recording postoperative pain intensity using Numerical Rating Scale (NRS). * The secondary outcomes will be measuring the performance time, onset of the sensory block, intraoperative fentanyl consumption, time to the first call for rescue analgesia (nalbuphine), postoperative total nalbuphine consumption, and postoperative complications such as nausea, vomiting, hypotension, and bradycardia. * We will compare two blocks to a placebo. * Participants will:
* undergo ultrasound-guided intermediate cervical plexus block or cervical erector spinae block or a placebo * Be assessed for pain after 2 h, 4 h, 6 h, 12 h, and 24 h postoperatively
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Both sex
Age: between 21 and 60 years
Physical status: belongs to American Society of Anesthesiologists (ASA) I, II
Body mass index (BMI): from 25 to 30 kg/m2
Disqualifiers
Refusal of participation.
local infection at the puncture site.
Mental or physical disability.
History of allergy to study drugs (bupivacaine, fentanyl).
Trial design
Parallel
Treatments tested in this trial
Block for Anterior Cervical Spine Surgery
Procedure/SurgeryThe patient will be positioned supine with a slight elevation of the head and the head turned away from the blocked side. After sterilizing the skin, the ultrasound probe will be placed over the middle of the posterior border of the sternocleidomastoid muscle. The needle will be inserted in-plane while keeping the probe in a transverse position. The needle tip will be placed under the sternocleidomastoid muscle and below the superficial fascia, and then, a total volume of 15 ml of 0.25% bupivacaine will be injected bilaterally. The spread of the local anesthetic will be visualized using ultrasound guidance. The same steps will be repeated on the other side
Saline (NaCl 0,9 %) (placebo)
DrugTotal volume of 15 ml of saline 0.9% will be injected subcutaneous bilaterally
Treatment groups
Trial outcomes
Primary outcomes
change in postoperative pain intensity using Numerical Rating Scale
Numeric Rating Scale ( NRS) score, a commonly used 11-point numeric scale ranges from '0' representing one pain extreme (no pain) to '10' representing the other pain extreme ( pain as bad as you can imagine or worst pain imaginable). The patient will be instructed to mark along the line to represent the intensity of pain currently being experienced.
Secondary outcomes
Change in the time of performance of the technique in minutes.
Time of performance of the technique: the time from probe insertion until the visualization of local anesthetic spread in minutes.
Change in the time to the first call for analgesia (nalbuphine) in hours.
The time to the first call for rescue analgesia (nalbuphine), which is the time between the end of surgery and the first report of postoperative pain, will be recorded in hours.
The total measure of nalbuphine given to each patient during the first 24 hours of the postoperative period
The total amount of nalbuphine in milligrams given to each patient during the first 24 hours of the postoperative period will be recorded.
Sponsors and contacts
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