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"Effect of 0.375% Ropivacaine at Volumes of 20ml and 30ml on Diaphragmatic Compound Muscle Action Potentials Following Ultrasound-Guided Supraclavicular Brachial Plexus Blockade: A Comparative Analysis at 5, 10, 20, and 30 Minutes Post-Blockade

Prospective study on the temporal changes of diaphragm composite muscle action potential after ultrasound-guided clavicle brachial plexus block

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
ChiCTR
Registry ID
ChiCTR2400091951
Enrollment
Unknown
Registered
2024-11-06
Start date
2024-11-09
Completion date
Unknown
Last updated
2024-11-11

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

Conditions

Diaphragmatic paralysis

Interventions

Group A:0.375% ropivacaine 20ml supraclavicular brachial plexus block
Group B:0.375% ropivacaine 30ml supraclavicular brachial plexus block

Sponsors

The 72nd Group Army Hospital of the People's Liberation Army (PLA) of China.
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to 65 Years

Inclusion criteria

Inclusion criteria: Scheduled for removal of internal fixation devices in the upper extremity surgery below the shoulder, society of Anesthesiologists (ASA) physical status ? or ?,ages between 18 and 65 years, body mass index (BMI) between 18 and 30 and agree to participate.

Exclusion criteria

Exclusion criteria: had a known allergy to local anesthetic, sensory or motor impairment, coagulation disorders, moderate to severe decline in preoperative cardiopulmonary function, mild block anesthetic effect and atypical diaphragm CMAP.

Design outcomes

Primary

MeasureTime frame
phrenic nerve conduction time;Dyspnea;—

Countries

China

Contacts

Public ContactAn xiaofeng

The 72nd Group Army Hospital of the People's Liberation Army (PLA) of China.

13757293980@163.com+86 137 5729 3980

Outcome results

None listed

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