To study the pain relief and occurrence of diaphragm (muscle of respiration) paralysis with two different techniques of blocking the nerves supplying sensation to the shoulder joint during shoulder surgeries.

Comparison of combined suprascapular and axillary nerve block versus superior (upper) trunk block for phrenic nerve sparing analgesia in patients undergoing arthroscopic shoulder surgery A randomized controlled study - NIL

Status

Recruiting

Phases

Phase 4

Study type

Interventional

Source

CTRI

Registry ID

CTRI/2024/05/067970

Enrollment

Registered

2024-05-28

Start date

Unknown

Completion date

Unknown

Last updated

2024-10-14

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Health Condition 1: O- Medical and Surgical

Interventions

Intervention1: GROUP SSN & AN (combined SSN and AN block): All patients will receive US-guided SSN and AN block with 20 mL 0.5% ropivacaine. Control Intervention1: Group ST Superior Trunk Block: All

Eligibility

Inclusion criteria

Inclusion criteria: 1. Adult patients aged 18-60 years 2. Belonging to with ASA I/II/III category 3. Belonging to either sex, 4. Scheduled for unilateral shoulder orthopaedic surgery and providing consent for the procedure.

Exclusion criteria

Exclusion criteria: 1. Pregnant female, 2. Patient with baseline cognitive deficits sufficient to make objective pain assessment unreliable, 3. Patients with coagulopathy, liver and renal dysfunction, 4. Preoperative neurological deficits and allergy to amide local anaesthetics. 5. BMI exceeding 30 kg/m2, mental disorders, chronic obstructive pulmonary disease or any respiratory ailment, coagulation disorders, prior trauma, neuropathy, myopathy, and the need for open surgery.

Design outcomes

Primary

Measure	Time frame
The composite primary outcome of the study will be the comparison of phrenic nerve sparing analgesia. Phrenic nerve sparing will be assessed as diaphragmatic excursion using ultrasound while the pain will be assessed both at rest and during movement using a numeric rating scale (NRS)Timepoint: From preoperative (Baseline) to first 24 hours postoperative.	—

Secondary

Measure	Time frame
Comparison of procedure-related complications if any in both groups.Timepoint: During first 24 hours in the postoperative period.;Comparison of pulmonary function (FVC, FEV1 & FEV1/FVC ratio) using portable spirometer.Timepoint: At baseline and at 30 mins after the procedure;Comparison of time to first rescue analgesia and total analgesic consumption.Timepoint: During the first 24 hours.	—

Countries

India

Contacts

Public ContactDisha

Department of Anaesthesiology and Critical Care, AIIMS, JODHPUR

drmsadik@gmail.com9414849733

Outcome results

None listed

Source: CTRI (via WHO ICTRP) · Data processed: Feb 4, 2026