An interventional study of Rhomboid Intercostal Block (RIB) and Retrolaminar Block (RLB) in Post Operative Pain, sponsored by Damanhour Teaching Hospital. Recruiting at 1 site in Egypt. Open to participants aged 18 Years to 60 Years. Per ClinicalTrials.gov, last updated 2026-09-21.
Sponsored by Damanhour Teaching Hospital · Not applicable, Interventional, and Prevention
Background: Although thoracoscopic sympathectomy is made via small incisions, it is associated with severe postoperative pain. Both Rhomboid intercostal block (RIB) and Retrolaminar block (RLB) are recent techniques used for pain control after such procedures
Objectives: To compare the effectiveness of RIB and RLB in providing postoperative analgesia after thoracoscopic sympathectomy in adult patients and their impact on the patient's outcomes.
Patients and Methods: This prospective, randomized (1:1), double-blind clinical trial; will be carried out on 60 patients scheduled for elective thoracoscopic sympathectomy under general anesthesia at our hospital. Patients will be randomly allocated into two equal groups (30 patients each) and will receive: in group A; general anesthesia with intraoperative ipsilateral ultrasound-guided RIB, whereas in group B; general anesthesia with intraoperative ipsilateral ultrasound-guided RLB.
5,640 studies on the registry are indexed under Pain, Postoperative; 1,230 are open to participants now.
This study's planned enrollment of 60 is below the median of 75 across 4,821 interventional studies indexed under Pain, Postoperative.
Browse Pain, Postoperative studies →Damanhour Teaching Hospital is the lead sponsor of 14 studies on the registry; 5 are open to participants now.
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Exclusion Criteria:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
The anaesthetists’ scale of health before surgery: I is healthy, II has a mild illness that is under control, III a severe one, IV a severe illness that is a constant threat to life. V and VI are used for the critically ill and for organ donors.
Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.
What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.
ASA physical status
The anaesthetists’ scale of health before surgery: I is healthy, II has a mild illness that is under control, III a severe one, IV a severe illness that is a constant threat to life. V and VI are used for the critically ill and for organ donors.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
BMI (body mass index)
Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.
What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Rhomboid Intercostal Block
Procedure: Rhomboid Intercostal Block (RIB)
Retrolaminar Block
Procedure: Retrolaminar Block (RLB)
Intraoperative Ipsilateral Ultrasound-guided RIB
Intraoperative Ipsilateral Ultrasound-guided RLB
Mean and Standard deviation of time to the first request of postoperative rescue analgesic (minutes) (mean±SD)
The time interval between the block performance and the first request of postoperative analgesia
Time frame: 24 hours after the end of surgery
Mean and Standard deviation of Numeric Pain Rating Scale (NPRS) score (mean±SD)
NPRS measures the severity of postoperative pain, it is a 11 point scale from 0-10; where 0=No pain and 10=Worst possible pain (At PACU, 1h, 3h, 6h, 12h, 18h, 24h) after the end of surgery
Time frame: 24 hours after the end of surgery
Mean and Standard deviation of the total dose of the rescue analgesic consumed (milligrams) (mean±SD)
The total dose of the rescue analgesic consumed in the first 24 hours after the end of surgery
Time frame: 24 hours after the end of surgery
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Damanhour Teaching Hospital