Study on the diffusion characteristics of ropivacaine intercostal nerve block at different levels in the extrapleural space under ultrasound guidance

Status

Active, not recruiting

Phases

Early Phase 1

Study type

Interventional

Source

ChiCTR

Registry ID

ChiCTR2200062459

Enrollment

Unknown

Registered

2022-08-08

Start date

2022-08-08

Completion date

Unknown

Last updated

2023-04-12

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

Conditions

Intraoperative drug diffusion

Interventions

Extrapleural space block supine position:0.375% ropaca due to 40mlt8 posterior axillary line block

Extrapleural space block prone position:0.375% ropaca due to 40mlt8 posterior axillary line block

Classic intercostal nerve block supine:0.375% ropaca due to 40mlt8 posterior axillary line block

Classic intercostal nerve block prone position:0.375% ropaca due to 40mlt8 posterior axillary line block

Classic intercostal nerve block lateral position:0.375% ropaca due to 40mlt8 posterior axillary line block

Eligibility

Sex/Gender

All

Age

30 Years to 80 Years

Inclusion criteria

Inclusion criteria: 1. Patients who intend to undergo radiofrequency ablation of liver tumors under CT guidance; 2. Age >= 18 years old; 3. ASA grade I - III.

Exclusion criteria

Exclusion criteria: 1. Allergic to narcotic drugs; 2. Long-term use of opioids; 3. Infection of puncture site; 4. Communication difficulties; 5. Iodine contrast agent allergy.

Design outcomes

Primary

Measure	Time frame
Liquid diffusion;Skin sensory regression plane;Calculate CT3D reconstruction diffusion area;	—

Countries

China

Contacts

Public ContactHong Xie

The Second Affiliated Hospital of Soochow University

hongx93044@126.com+86 13962161588

Outcome results

None listed

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