Patients undergoing bariatric surgery will be divided randomly into two groups: the first will have TAP block upon completion of surgery and the second groups will not have TAP block.
Upon completion of the laparoscopic bariatric procedure to be performed for every patient and just before recovery from general anesthesia, an ultrasound-guided TAP block will be conducted in the operative theater by the anesthetist for group I patients whereas group II will be recovered from anesthesia without having a TAP block. The ultrasound probe will be placed on the lateral abdominal wall in the mid-axillary line between the lower costal margin and iliac crest. Using ultrasound will allow accurate deposition of the local anesthetic in the correct neurovascular plane. A spinal needle will be advanced using in-plane technique between the aponeurosis of the internal oblique and transversus abdominis muscles. With intermittent aspiration, 20 mL of local anesthetic (0.25% bupivacaine) will be deposited in the TAP on each side and seen as a hypoechoic shadow pushing the two layers apart.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Enrollment
92
Injection of 20 mL of 0.25% bupivacaine in the transversus abdominis plane under ultrasound guidance after performing bariatric surgery
Bariatric surgery will be conducted
Mansoura university hospital
Al Mansurah, Dakahlia Governorate, Egypt
Postoperative abdominal pain
Degree of postoperative pain measured by Visual Analogue Scale from 0-10
Time frame: first 24 hours after surgery
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