The researchers are trying to determine pain medication consumption in the first 24 hours after surgery in patients given the standard continuous infusion of local anesthetic versus patients given the same total dose via programmed intermittent dosing. Both groups will receive the option of patient controlled pain medication as well as the same dose of pre-programmed pain medication. The only difference is the rate of administration: continuous vs. hourly intervals.

Inclusion Criteria:

• Documentation of planned thoracic surgery for which a paravertebral catheter is indicated based on surgeon request as well as appropriateness of location of surgical site.
• Ability for subject to comply with the requirements of the study.

Exclusion Criteria:

• Pregnancy.
• Coagulopathy at time of evaluation or surgery.
• Infection at the site of needle insertion.
• Allergy to local anesthetic.
• Patient refusal.
• Chronic opioid use

Investigators will not have direct access to settings on the pump