Half effective dose (ED50) and 90% minimum effective dose (MED90) of ropivacaine for sacral block in children

Minimum effective dose of ropivacaine for sacral block in children

Status

Recruiting

Phases

Phase 4

Study type

Interventional

Source

ChiCTR

Registry ID

ChiCTR2200057902

Enrollment

Unknown

Registered

2022-03-21

Start date

2022-03-22

Completion date

Unknown

Last updated

2023-11-21

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

Conditions

Hypospadias

Interventions

Group 1 :Lidocaine + ropivacaine

Eligibility

Sex/Gender

All

Age

1 Years to 6 Years

Inclusion criteria

Inclusion criteria: 1. Children undergoing surgery for hypospadias in the Children's Hospital Affiliated to Chongqing Medical University; 2. Children aged 1-6 years were included in ASAI-II.

Exclusion criteria

Exclusion criteria: 1. Abnormal coagulation function; 2. Lower extremity nerve injury or spinal disease; 3. The puncture site has a history of infection; 4. Known allergy to ropivacaine and lidocaine; 5. History of upper respiratory tract infection; 6. Parents refused to participate in the study.

Design outcomes

Primary

Measure	Time frame
50% minimum effective capacity;90% minimum effective capacity;50% minimum effective concentration;90% minimum effective concentration;Success rate;Complication;	—

Countries

China

Contacts

Public ContactYang Fei

Department of Surgical Anaesthesia, Children's Haspitai of Chongqing Medical University

270859993@qq.com+86 13648314370

Outcome results

None listed

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