Phase 4
Completed N=126
Interscalene Block Versus Superior Trunk Block
Joint Disease · Postoperative Pain · Pain, Acute · Pain, Chronic
Source: ClinicalTrials.gov NCT03272139 ↗
Enrolled (actual)
126
Serious AEs
0.0%
Results posted
Apr 2020
Primary outcomePrimary: Number of Participants With Incidence of Hemidiaphragmatic Paralysis (HDP) — 45; 3; 18; 59 participants
◆ Published Evidence
No publication linked
No peer-reviewed publication reporting this trial's results has been linked yet. This can indicate results are unpublished — a known publication-bias signal. We re-check periodically.
Summary
Sparing the phrenic nerve by administering ultrasound-guided low volume superior trunk block (STB) and interscalene block (ISB) for arthroscopic shoulder surgery (labral repair, stabilization, rotator cuff repair).
Outcome Measures
| Outcome | Result | p-value |
|---|---|---|
| PRIMARY Number of Participants With Incidence of Hemidiaphragmatic Paralysis (HDP) |
45; 3; 18; 59 | — |
| PRIMARY Numerical Pain Rating System (NRS) Pain Scores |
0; 0 | — |
| SECONDARY Block Duration |
23.18; 23.15 | — |
Eligibility Criteria
Inclusion Criteria
- Patients who will be undergoing primary unilateral labral repair/stabilization of the shoulder
- Age 18 to 80 years
- Planned use of general anesthesia with LMA and interscalene or superior trunk block
- Ability to follow study protocol
- English speaking
- ASA I - III
Exclusion Criteria
Pre-existing neuropathy of the operative limb
- Younger than 18 years old and older than 80
- Patients with pulmonary severe respiratory disease
- Allergy to one of the study medications
- Chronic gabapentin/pregabalin use (regular use for longer than 3 months)
- Chronic opioid use (taking opioids for longer than 3 months)
- Contraindication to general anesthesia, interscalene or superior trunk block
- Herniated Cervical Disk, Cervical Myelopathy
- BMI >35
Data sourced from ClinicalTrials.gov (NCT03272139). Outcome figures and adverse-event rates are extracted automatically from the registry's posted results and are provided for clinician reference, not as a substitute for the primary publication. Informational only — not medical advice.