An interventional study of Interscalene Block and Costoclavicular Infraclavicular Block in Pain, Postoperative, Shoulder Pain and Surgical Procedure, Unspecified, sponsored by University of Chile. Completed at 1 site in Chile. Open to participants aged 18 Years to 80 Years. Per ClinicalTrials.gov, last updated 2018-07-10.
Sponsored by University of Chile · Not applicable, Interventional, and Supportive care
Among 12 studies in Pain, Postoperative by University of Chile — 1 open to participants now, 1 under way, none of them phase 3. Pain, Postoperative · University of Chile.
Among the 12 studies in Pain, Postoperative by University of Chile, this one is the 8th largest by enrollment of the 11 interventional ones, is one of 3 that started in 2018, is one of 10 with no phase, and was the 3rd registered.
5,640 studies on the registry are indexed under Pain, Postoperative; 1,230 are open to participants now.
This study's enrollment of 44 is below the median of 75 across 4,821 interventional studies indexed under Pain, Postoperative.
Browse Pain, Postoperative studies →1 of the 12 studies in Pain, Postoperative by University of Chile is open now, in 1 country. Each count lists the studies.
Of the 679 Pain, Postoperative studies recruiting now, 241 (35%) set no upper age limit and 328 (48%) stop at 75 or younger; 74 take children under 18; 128 take healthy volunteers.
This study: 18 Years to 80 Years · all sexes · no healthy volunteers.
The full table on the hub →12 studies; the count open now beside each. This study's row is marked.
First in 2015; this study’s year is marked. 3 started in 2018.
Median enrollment 50 across the 11 interventional studies, 57 across the 1 observational. Of the 10 that completed or were terminated, 0 (0%) have results posted.
University of Chile is the lead sponsor of 194 studies on the registry; 38 are open to participants now.
None of the studies under way reaches primary completion within a year.
Among the 12 studies in Pain, Postoperative by University of Chile, from their registry updates:
Nothing recorded among them since 2026-09-25.
Interscalene brachial plexus block constitutes the analgesic criterion standard for shoulder surgery. However, it is associated with a high incidence of hemidiaphragmatic paralysis (HDP) that may not be tolerated by patients with chronic pulmonary disease. This randomized controlled trial (RCT) will compare ultrasound-guided interscalene block (ISB) and costoclavicular infraclavicular block (CCICB) in patients undergoing arthroscopic shoulder surgery.
The main outcome is static pain at 30 minutes after arrival in the post anesthesia care unit (PACU) as measured by a numerical rate scale (NRS) from 0 to 10. Our research hypothesis is that interscalene and costoclavicular infraclavicular blocks will result in equivalent postoperative analgesia at 30 minutes in the PACU. The equivalence margin is set at 2 points.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
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.
Patients randomized to receive an intesrcalene block.
Procedure: Interscalene Block
Patients randomized to receive a costoclavicular infraclavicular block.
Procedure: Costoclavicular Infraclavicular Block
Injection with ultrasound guidance of 20mL of levobupivacaine 0.5% with 5 micrograms of epinephrine per mL in the interscalene groove of the brachial plexus.
Ultrasound guided brachial plexus block injecting 20mL of 0.5% levobupivacaine with 5 micrograms of epinephrine per mL in between the cords of the brachial plexus at the costoclavicular infraclavicular space.
Static pain at 30 minutes after arrival in the PACU
Evaluated with a NRS from 0 to 10
Time frame: 30 minutes
Static pain at 60 minutes after arrival in the PACU
Evaluated with a NRS from 0 to 10
Time frame: 60 minutes
Postoperative static pain at 2 hours
Evaluated with a NRS from 0 to 10
Time frame: 2 hours
Postoperative static pain at 3 hours
Evaluated with a NRS from 0 to 10
Time frame: 3 hours
Postoperative static pain at 6 hours
Evaluated with a NRS from 0 to 10
Time frame: 6 hours
Postoperative static pain at 12 hours
Evaluated with a NRS from 0 to 10
Time frame: 12 hours
Postoperative static pain at 24 hours
Evaluated with a NRS from 0 to 10
Time frame: 24 hours
Incidence of HDP at 30 minutes after interscalene or costoclavicular infraclavicular block
Ultrasound diagnosed HDP
Time frame: 30 minutes post injection
Incidence of HDP at 30 minutes after arrival to PACU
Ultrasound diagnosed HDP
Time frame: 30 minutes after arrival to the PACU
Block performance time
Time from skin disinfection until the end of local anesthetic injection
Time frame: 1 hour before surgery
Sensory and Motor block score
Sensorimotor block assessed every 5 minutes until 30 minutes using a 8-point composite score
Time frame: 30 minutes post injection
Incidence of complete block
Percentage of blocks with a minimal sensorimotor composite score of 6 points out of a maximum of 8 points at 30 minutes post injection
Time frame: 30 minutes post injection
Procedural pain during blocks
Evaluated with a NRS from 0 to 10
Time frame: 1 hour before surgery
Onset time
Time required to reach a minimal sensorimotor composite score of 6 points out of a maximum of 8 points
Time frame: 1 hour before surgery
Intraoperative opioid requirements
Total amount of fentanyl required during general anesthesia
Time frame: Intraoperative period
Surgical duration
Time between skin incision and closure
Time frame: Intraoperative period
Postoperative opioid consumption
Total amount of morphine required during the first 24 hours after surgery
Time frame: 24 hours after surgery
Patient satisfaction
Patient satisfaction measured using a NRS 0 to 10 (0 = unsatisfied; 10 =very satisfied)
Time frame: 24 hours after surgery
Block- and opioid-related side effects
Incidence of side effects
Time frame: 1 week
Plan to share: No
This study is completed, as verified in Jul 2018. You cannot join it, but the record below documents what was studied.
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