Efficacy of Gabapentin in Prevention of Tourniquet Pain and Hypertension

Inclusion Criteria: * Patient ages 18-64 * ASA physical status 1-3 * Schedule for orif tibia fracture with use of pneumatic tourniquet Exclusion Criteria: * Allergy to study medications * polytrauma * lower extremity crush injury * chronic opioid use * sickle cell disease or trait * peripheral vascular disease * poorly controlled hypertension * history of DVT/PE * morbid obesity (BMI \> 35) * patient or surgeon refusal * patient inability to properly describe postoperative pain to investigators