Rectus Sheath Block in Cardiac Surgery

Inclusion Criteria: * In order to be eligible to participate in this study, an individual must meet all of the following criteria: 1. Adults 18-85 years old 2. Scheduled to undergo cardiac procedures involving chest tubes 3. Male or female Exclusion Criteria: * An individual who meets any of the following criteria will be excluded from participation in this study: 1. ASA class V 2. Urgent or emergent surgery 3. Contraindications to administration of local anesthesia (e.g. local anesthetic allergy) 4. History of substance abuse or chronic opioid use 5. Patient refusal or inability to consent