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The analgesic effect of bupivacaine liposome combined with standard bupivacaine for thoracic paravertebral nerve block in unilateral breast surgery: A prospective, double-blind, randomized controlled trial

The analgesic effect of bupivacaine liposome combined with standard bupivacaine for thoracic paravertebral nerve block in unilateral breast surgery: A prospective, double-blind, randomized controlled trial

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
ChiCTR
Registry ID
ChiCTR2600127881
Enrollment
Unknown
Registered
2026-07-09
Start date
2026-02-06
Completion date
Unknown
Last updated
2026-07-13

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

Conditions

Breast diseases

Interventions

Intervention Group (Group B):Bupivacaine liposome (1.33%, 10ml) + standard bupivacaine hydrochloride (0.5%, 10ml)
Control Group (Group C):Standard bupivacaine hydrochloride (0.5%, 20ml)

Sponsors

The Second Hospital of Lanzhou University
Lead Sponsor

Eligibility

Sex/Gender
Female
Age
18 Years to 70 Years

Inclusion criteria

Inclusion criteria: 1. Gender is not limited. Age: 18 to 70 years old. 2. BMI: 18-28kg/m^2; 3. ASA is classified into grades I to III; 4. Proposed surgery: Unilateral breast surgery (radical mastectomy/modified radical mastectomy/breast-conserving + sentinel lymph node biopsy/axillary dissection).

Exclusion criteria

Exclusion criteria: 1.Known to be allergic to (amides), liposomes or related excipients; 2.Infection at the puncture site, coagulation dysfunction (INR>1.4, platelet <80×10^9/L), or the use of anticoagulant drugs. 3.Severe liver and kidney dysfunction (Child-Pugh grade C, or eGFR<30 ml/min/1.73m^2); 4.Recent history of painkiller intake and drug abuse; 5. Severe scoliosis, deformity or history of thoracic spine surgery; 6. Pregnant or lactating women; 7. Inability to understand or use the pain scoring scale; 8.Those suffering from mental disorders or other diseases.

Design outcomes

Primary

MeasureTime frame
NRS Pain score;

Secondary

MeasureTime frame
Duration of analgesia;The consumption of opioids;Adverse reactions;Adverse reactions;

Countries

China

Contacts

Public ContactWang Yingbin

The Second Hospital of Lanzhou University

1402141673@qq.com+86 138 9313 3264

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: Jul 23, 2026