Breast Surgery
Conditions
Interventions
Superficial group:20ml 0.5% ropivacaine injection of local anesthetic at superficial of serratus anterior muscle
Deep group:20ml 0.5%ropivacaine injection of local anesthetic at deep of serratus anterior muscle
10ml group:Inject 10ml of 0.5% ropivacaine into the serratus anterior plane (according to the result of the first step of study, at superficial or deep of serratus anterior muscle)
20ml group:Inject 20ml of 0.5% ropivacaine into the serratus anterior plane (according to the result of the first step of study, at superficial or deep of serratus anterior muscle)
30ml group:Inject 30ml of 0.5% ropivacaine into the serratus anterior plane (according to the result of the first step of study, at superficial or deep of serratus anterior muscle)
0.375% group:Injection of 0.375% ropivacaine into the anterior serratus plane (according to the results of the first and second steps of study, in superficial or deep of serratus anterior muscle
0.5%group:Injection of 0.5% ropivacaine into the anterior serratus plane (according to the results of the first and second steps of study, in superficial or deep of serratus anterior muscle
0.75%group:Injection of 0.75% ropivacaine into the anterior serratus plane (according to the results of the first and second steps of study, in superficial or deep of serratus anterior muscle
Sponsors
The First Affiliated Hospital of Wenzhou Medical University
Eligibility
Sex/Gender
Female
Age
18 Years to 50 Years
Inclusion criteria
Inclusion criteria: 1. A patient undergoing breast surgery; 2. Aged 20-50 years; 3. BMI index 18.5-23.9.
Exclusion criteria
Exclusion criteria: 1. Diseases of vital organs and systems of the whole body; 2. An allergy to a local anesthetic; 3. Chronic pain; 4. Abnormal coagulation function; 5. Injection site infection; 6. Peripheral nervous system disease; 7. Mental illness and can not cooperate.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Block area;Blocking effect regression time;extent of the block; | — |
Secondary
| Measure | Time frame |
|---|---|
| Pain score;Nausea and vomiting; | — |
Countries
China
Contacts
Public ContactKejian Shi
The First Affiliated Hospital of Wenzhou Medical University
Outcome results
None listed