This prospective parallel group randomized study will be conducted over 52 adult participants between 20 and 60 years ASA (American Association of Anesthesiologists) I and II undergoing lumbar spine surgery. The participants will be randomly allocated into 2 groups. Group BM (Bupivacaine + magnesium sulfate) will receive bilateral erector spinae block using bupivacaine and magnesium sulfate after induction of general anesthesia, while group BD (Bupivacaine + dexmedetomidine) will receive bilateral erector spinae block using bupivacaine and dexmedetomidine after induction of general anesthesia. Hemodynamic changes will be monitored intraoperatively, and postoperative pain will be assessed using the visual analogue scale in order to assess the need for postoperative analgesia.
This prospective parallel group randomized study will be conducted over 52 adult participants between 20 and 60 years ASA (American Association of Anesthesiologists) I and II undergoing lumbar spine surgery. The participants will be randomly allocated into 2 groups. General anesthesia will be induced using propofol 1-2mg/kg, fentanyl 2ug/kg, and atracurium 0.5mg/kg. Both groups will receive bilateral erector spinae block Group BM will receive bilateral erector spinae block .A technique that will be performed ultrasound guided to identify the transverse process of T10, and an 18G (gauge) needle will be introduced in plane deep to the erector spinae muscle after which a combination of 20ml bupivacaine 0.25% and 2.5 ml magnesium sulfate. While group BD will receive the same block with the with 20ml bupivacaine 0.25% and dexmedetomidine 1ug/kg. Hemodynamic changes will be monitored intraoperatively, for detection of any variations. Postoperative pain will be assessed every 2 hours following the surgery using the visual analog scale in order to assess the need for postoperative analgesia. Analgesia will be given in the form of nalbuphine 10mg when the visual analog scale is above 4. Patient satisfaction will be measured by a scale from 1-10 the next day. Any complications will be recorded.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
52
After induction of general anesthesia the patients will be flipped to the prone position and ESP block was performed using, a high frequency linear ultrasound probe placed longitudinally 2 to 3 cm lateral to the 10th thoracic vertebrae, and the trapezius and erector Spinae muscles identified. An 18-G Tuohy needle passed along the plane of the transducer until its tip hit the transverse process of T10; the needle was then withdrawn slightly. Total volume of 25 ml was injected including 20 mL 0.25% bupivacaine plus 3.75 ml NS and 125 mg MgSO4 (1.25ml).
After induction of general anesthesia the patients will be flipped to the prone position and ESP block was performed using, a high frequency linear ultrasound probe placed longitudinally 2 to 3 cm lateral to the 10th thoracic vertebrae, and the trapezius and erector Spinae muscles identified. An 18-G Tuohy needle passed along the plane of the transducer until its tip hit the transverse process of T10; the needle was then withdrawn slightly. Total volume of 25 ml was injected including 20 mL 0.25% bupivacaine plus dexmedetomidine 1ug/kg.
Ain Shams university
Cairo, Egypt
Measurement of the duration of postoperative analgesia
Postoperative analgesia duration will be assessed using the visual analogue scale which is from 0-10 were 0 means no pain and 10 is the worst pain
Time frame: 12 hours
Dose of postoperative nalbuphine
Total dose of postoperative nalbuphine will be measured depending on the visual analogue scale
Time frame: 12 hours
Patient satisfaction
Patient satisfaction will be measured using the patient satisfaction scale which will be from 1-10 were 1 means no satisfaction and 10 is the best satisfaction
Time frame: 48 hours
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