Evaluation of the Duration of Bupivacaine Spinal Block in Orthopedic Procedures With and Without Epinephrine Wash

Evaluation of the Duration of Bupivacaine Spinal Block as the Primary Anesthetic for Orthopedic Procedures With and Without Epinephrine Wash

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?

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