Diaphragm-sparing Nerve Blocks for Shoulder Arthroplasty

University Hospital of North Norway

Status: Completed

Conditions: Shoulder Disease

Treatments: Procedure: Peripheral nerve blocks

Study type: Interventional

Funder types: Other

Identifiers

NCT03877835

REK 2018/1934-3

Details and patient eligibility

About

The combination of a modified lateral sagittal infraclavicular block and a suprascapular nerve block has not been studied in a cohort of total arthroplasty patients. Such diaphragm-sparing nerve blocks for shoulder arthroplasty may provide a very good anesthetic alternative in lung diseased patients who are in need for total arthroplasty of the shoulder.

Full description

The investigators hypothesized that a combination of suprascapular nerve block and lateral sagittal infraclavicular block of the posterior and lateral cords would provide good postoperative analgesia for patients undergoing shoulder arthroplasty.

The primary aims of this study were to document numeric rating scale (NRS, 0-10) and use of morphine equivalents during the first 24 hours after surgery. Secondary aims were to determine the incidence of diaphragm paresis 30 minutes after the block and to quantify postoperative hand grip force at 1 hr.

Enrollment: 20 patients

Sex: All

Ages: 18 to 80 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• 18-78 years old,
• BMI 20-35 kg.m-2
• ASA physical status 1-3

Exclusion criteria

• unable to consent,
• pregnancy,
• pre-existing severe respiratory disease,
• use of anticoagulation drugs other than acetylsalicylic acid or dipyridamol,
• allergy to local anaesthetics,
• patients on regular opioids,
• atrioventricular block,
• peripheral neuropathy.

Trial design

Primary purpose: Treatment

Allocation: N/A

Interventional model: Single Group Assignment

Masking: None (Open label)

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20 participants in 1 patient group

Ropivacaine

Other group

Description:

SSNB will be performed with 4 ml ropivacaine 5 mg/ml LSIB will be performed With 15 ml ropivacaine 7.5 mg/ml

Treatment:

Procedure: Peripheral nerve blocks