We performed a prospective randomized study to investigate the effect of the volume of local anesthetic on phrenic nerve paralysis during interscalene brachial plexus block. The assessment of phrenic nerve paralysis was evaluated with diaphragmatic ultrasound on changes of thickness of the diaphragm.

Ultrasonographic evaluation of local anesthetic volume on phrenic nerve paralysis during interscalene brachial plexus block

Status

Recruiting

Phases

Unknown

Study type

Interventional

Source

CRIS

Registry ID

KCT0005575

Enrollment

Registered

2020-11-04

Start date

2020-05-18

Completion date

Unknown

Last updated

2020-12-02

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

Conditions

None listed

Interventions

Drug : The experimental group (group E) received 10 ml of ropivacaine 0.5&#37

, whereas the control group (group C) received 15 ml of ropivacaine 0.5&#37

for interscalene brachial plexus block under ultrasound-guided posterior approach. Block needle was inserted in a lateral-to-medial direction superficial to or through the middle scalene muscle and ad

, half volume of the predetermined total volume in each group was injected slowly by observing the root components being pushed medially according to spread of local anesthetic.

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Patients undergoing elective arthroscopic shoulder surgery for rotator cuff tear, biceps tendinosis and Bankart lesion, and Brisement manipulation for frozen shoulder.

Exclusion criteria

Exclusion criteria: Exclusion criteria included an existing severe respiratory disease, pregnancy, a history of allergy to local anesthetics and refusal to participate in the study.

Design outcomes

Primary

Measure	Time frame
Thickening fraction which defined the percentage of change in thickness between end-expiration and peak-inspiration is calculated as following formula; (thickness at peak-inspiration – thickness at end-expiration / thickness at end-expiration) ×100.	—

Secondary

Measure	Time frame
The worst oxygen saturation;Resting pain is measured by an 11-point numerical rating scale and scored as follows: 0 = no pain and 10 = the worst pain;Handgrip strength is measured by asking the patient to make a fist and squeeze the examiner’s fingers and graded as follows: 0 = complete loss of power, 1 = weakness, and 2 = normal.	—

Countries

Korea, Republic of

Contacts

Public ContactIl Seok Kim

Kangdong Sacred Heart Hospital

Outcome results