Testing the Feasibility of Using Ropivacaine in Spinal Anesthesia for Patients With Lower Back Surgery

Exclusion Criteria

• •Allergy to either ropivacaine, bupivacaine, or local anesthetics
• •Contraindications to spinal anesthesia (i.e. coagulopathy or on anticoagulants, severe aortic or mitral valve stenosis, sepsis or bacteremia, thrombocytopenia, high intracranial pressure, infection at the puncture site)
• •Surgery is expected to take more than 2 hours
• •Emergency surgery
• •Previously had back surgery at the level of the spine currently being operated on
• •Comorbidities that require the patient to undergo general anesthesia
• •Inability to stay still during the surgery
• •Inability to move legs preoperatively
• •Body Mass Index (BMI) \>35
• •Multilevel severe spinal stenosis