Median effective concentration and 90% minimum effective concentration of ropivacaine employed in the ultrasound-guided median nerve block

Study on the effective dose of ropivacaine for ultrasound guided median nerve block

Status

Recruiting

Phases

Phase 4

Study type

Interventional

Source

ChiCTR

Registry ID

ChiCTR2100045215

Enrollment

Unknown

Registered

2021-04-08

Start date

2021-04-08

Completion date

Unknown

Last updated

2021-11-16

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

Conditions

Trigger finger

Interventions

Case series:Ropivacaine, performed by Dixon's sequential method.

Eligibility

Sex/Gender

All

Age

1 Years to 12 Years

Inclusion criteria

Inclusion criteria: 1. Children who are scheduled to undergo trigger finger surgery in children's Hospital affiliated to Chongqing Medical University; 2. Children aged 1-12 years, ASA grade I-II.

Exclusion criteria

Exclusion criteria: 1. Abnormal coagulation function; 2. The presence of upper limb nerve injury; 3. The puncture site has a history of infection; 4. Known allergy to ropivacaine; 5. A history of upper respiratory tract infection; 6. Parents refused to participate in the study.

Design outcomes

Secondary

Measure	Time frame
Rate of success;Complications;Sedation recovery time;	—

Primary

Measure	Time frame
Half effective concentration;90% minimum effective concentration;	—

Countries

China

Contacts

Public ContactYang Fei

Children's Hospital of Chongqing Medical University

270859993@qq.com+86 13648314370

Outcome results

None listed

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