This randomized controlled study is designed to evaluate the postoperative analgesic effect of the ultrasound-guided modified thoracoabdominal nerves block through perichondrial approach (M-TAPA) in patients undergoing laparoscopic cholecystectomy. The investigators hypothesized that the US-guided M-TAPA would be more effective in postoperative pain control than the US-guided subcostal transversus abdominis plane block (TAPB).
Patients (Age\>18 years) undergoing elective laparoscopic cholecystectomy are randomly allocated to receive bilateral US-guided M-TAPA (n=30) or bilateral subcostal TAPB (n=30) using 0.375% ropivacaine 15ml (total 30ml) before surgical incision. The blinded investigator evaluates each patient's parameters (Numeric rating scale, nausea, vomiting, pruritis, and patient satisfaction) at 1, 2, 4, 6, 12hours postoperatively, and immediately before discharge. The primary outcome is pain severity evaluated by a NRS at 12hours postoperatively.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Enrollment
60
In the M-TAPA group, after finding the right 10th costal cartilage using ultrasound guidance, a anesthesiologist inject 0.375% ropivacaine 15ml into the lower aspect of the chondrium. Perform left M-TAPA in the same way. In the subcostal TAPB group, a anesthesiologist inject 0.375% ropivacaine 15ml into end of right rectus abdominis muscle using ultrasound guidance. Perform left subcostal TAPB in the same way.
Seoul National University Hospital
Seoul, Please Select An Option, South Korea
Maximum postoperative pain score during 12hours postoperatively
maximum pain score measured by the 11-pointed numeric rating scale (0: none/10: worst pain) during 12hours postoperatively
Time frame: at 12hour postoperatively.
Postoperative pain score at rest
Change in the pain severity measured by the 11-pointed numeric rating scale (0: none/10: worst pain) pain score at resting
Time frame: at 1, 2, 4, 6, 12hours postoperatively, and immediately before discharge
Postoperative pain score during coughing
Change in the pain severity measured by the 11-pointed numeric rating scale (0: none/10: worst pain) pain score during coughing
Time frame: at 1, 2, 4, 6, 12hours postoperatively, and immediately before discharge
Patient satisfaction before discharge
Patient satisfaction measured by the 7-pointed Likert scale. (1: Strongly dissatisfaction/ 7: Strongly satisfaction)
Time frame: at immediately before discharge
Occurrence rate of postoperative nausea, vomiting
Incidence of postoperative nausea and vomiting (%)
Time frame: at 1, 2, 4, 6, 12hours postoperatively, and immediately before discharge.
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