Postoperative Pain
Conditions
Keywords
catheter, ultrasound guidance, nerve stimulation, electrical stimulation, nerve block, UCSD, timed placement, surgery, Catheter Placement Time
Brief summary
This research study is to determine the relative times for perineural catheter placement with the use of ultrasound versus electrical stimulation. The perineural catheter is placed next to the nerves through which local anesthetic is placed to provide pain control following surgery. This study may determine if one method is associated with increased success rate and patient comfort.
Detailed description
Primary Specific Aim: To determine if the relative times for perineural catheter placement with the use of ultrasound versus electrical stimulation. Hypothesis: Compared with the use of electrical stimulation, the use of ultrasound guidance when inserting a perineural catheter is associated with a decreased time of placement. Secondary Specific Aim: To determine if other possible benefits of perineural catheter placement associated with the use of ultrasound guidance versus electrical stimulation. Hypothesis: Compared with the use of electrical stimulation, the use of ultrasound guidance when inserting a perineural catheter is associated with an increased surgical block success rate and catheter-placement success rate, as well as decreased patient discomfort and incidence of venous puncture.
Interventions
PROCEDUREperineural mepivicaine catheter placed via ultrasound or electrical stimulation
Patients will be randomized to one of two groups: catheter placement via ultrasound or nerve stimulation. Placement of the catheter will be timed by research staff and discomfort level asked after placement of catheter. If the catheter is not placed by the randomized method within 15 minutes, the practitioner my switch to the alternate method. Patients will be called the morning after surgery by research staff to assess discomfort levels.
Sponsors
University of California, San Diego
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No
Inclusion criteria
* undergoing surgery with a planned perineural catheter for postoperative analgesia * catheter in the interscalene, infraclavicular, popliteal, or femoral anatomic location * age 18 years or older
Exclusion criteria
* pregnancy * inability to communicate with the investigators and hospital staff * incarceration
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| The primary outcome measurement will be the time of placement for a perineural catheter using either ultrasound-guided method or electrical stimulation method. | 30 minutes |
Secondary
| Measure | Time frame |
|---|---|
| Pain and discomfort as assessed by a 0-10 scale (0=no pain/discomfort and 10=worst pain/discomfort imaginable) by the research coordinator. | After catheter placement and Postoperative day 1 |
Countries
United States
Outcome results
None listed