Evaluation of the Duration of Bupivacaine Spinal Block as the Primary Anesthetic for Orthopedic Procedures With and Without Epinephrine Wash
Overview
- Phase
- Not Applicable
- Intervention
- EPI75 group
- Conditions
- Arthropathy of Hip
- Sponsor
- Medical University of South Carolina
- Enrollment
- 30
- Locations
- 1
- Primary Endpoint
- Duration of Sensory Block
- Status
- Completed
- Last Updated
- 2 years ago
Overview
Brief Summary
Bupivacaine spinal is commonly performed as the primary anesthetic for orthopedic procedures. In some cases the duration of the block is inadequate. An epinephrine wash is sometimes performed to prolong the duration of the block. The epinephrine wash may prolong the duration of the block, and if it does, to what extent?
Investigators
Eric Bolin
Assistant Professor
Medical University of South Carolina
Eligibility Criteria
Inclusion Criteria
- •18 years of age or older
- •Patients scheduled for total hip or knee replacement
Exclusion Criteria
- •Patients taking anticoagulation
- •Infection at or near the intended needle insertion site
- •Patients with sacral decubitus ulcer at or near the intended needle insertion site aortic stenosis
- •Complex spine anatomy
- •ASA class greater than III
- •Failed SAB as determined by the staff anesthesiologist
Arms & Interventions
EPI75 group
The EPI75 group will receive bupivacaine 0.5% 3cc, epinephrine 1:1000 0.075 cc, and sterile saline 0.025%.
Intervention: EPI75 group
Bupivacaine Only
The bupivacaine only group will receive bupivacaine 0.5% 3cc plus sterile saline 0.1cc.
Intervention: Bupivacaine Only
EPI25 group
The EPI25 group will receive bupivacaine 0.5% 3cc, epinephrine 1:1000 0.025cc, and sterile saline 0.075cc.
Intervention: EPI25
EPI50 group
The EPI50 group will receive bupivacaine 0.5% 3cc, epinephrine 1:1000 0.05cc, and sterile saline 0.05cc.
Intervention: EPI50 group
EPI100 group
The EPI100 group will receive bupivacaine 0.5% 3cc, and epinephrine 1:1000 0.1cc
Intervention: EPI100 group
Outcomes
Primary Outcomes
Duration of Sensory Block
Time Frame: 12 hours
Duration of the sensory block at the T12 dermatome will be assessed in the post operative phase
Duration of Motor Block
Time Frame: 12 hours
(hip felxion) of the non operative leg