Ventilation and Pulmonary Aeration, Electrical Impedance Tomography, Interscalene Brachial Plexus Block

Federal University of São Paulo

Status: Unknown

Conditions: Brachial Plexus Block; Pulmonary Ventilation

Treatments: Drug: Bupivacaine 15 mL; Drug: Bupivacaine 4 mL

Study type: Interventional

Funder types: Other

Identifiers

NCT03577860

48739315.4.0000.5505

Details and patient eligibility

About

Patients with indication of shoulder surgery will be submitted to ultrasound-guided interscalene brachial plexus block with 4ml or 15ml of bupivacaine- epinephrine 0,5%- 1:200,000 at level of C5-6 roots and will be evaluated their ventilation and pulmonary aeration by electrical impedance tomography

Enrollment: 40 estimated patients

Sex: All

Ages: 18 to 70 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• shoulder surgery
• indication of interscalene brachial plexus block
• American Society of Anesthesiology Physical Status Classification I or II

Exclusion criteria

• refuse to participate
• previous lung or diaphragma surgeries

Trial design

Primary purpose: Other

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Triple Blind

---

40 participants in 2 patient groups

Bupivacaine 4ml

Active Comparator group

Description:

The interscalene brachial plexus block is performed with 4ml at level of C5-6 roots

Treatment:

Drug: Bupivacaine 4 mL

Bupivacaine 15ml

Active Comparator group

Description:

The interscalene brachial plexus block is performed with 15ml at level of C5-6

Treatment:

Drug: Bupivacaine 15 mL