Exparel and Marcaine for Pain Management in Thoracoscopic Lobectomy Patients

Overview

The purpose of this study is to assess pain management after elective thoracoscopic lobectomy. The study will compare two local anesthetics that are given intra-operatively during lobectomy to see which one helps in better pain control and to see which one helps decrease the need for opioid medications. Participants will receive either Marcaine (Bupivacaine-epinephrine 0.25%, 1:200,000) or Exparel (Bupivacaine liposomal (1.3%)) and the drug will be chosen in a random fashion. Participants will be followed during the hospital stay and for one year thereafter. An visual Scale will be administered to measure pain, and opioid drug use will be measured by calculating morphine equivalent dose on each day post surgery until discharge and thereafter on 30 day, 6 month and 12 month follow-up visits. Participants will be monitored for any drug related toxicity and other co-morbid conditions for a period on one year post surgery. Overall cost for the surgery and during in hospital stay post surgery will be collected and compared between the two treatment arms.

The hypothesis of this study is the possibility of liposomal bupivacaine providing more relief with less need of narcotics when compared to standard bupivacaine. To test the hypothesis the investigators will compare pain management following local infiltration of liposomal bupivacaine (Exparel®) versus standard bupivacaine HCl with epinephrine (Marcaine®) after VATS (video-assisted thoracoscopic surgery)-lobectomy. This will be accomplished by evaluating total opioid usage and patient reported pain scores. Study will be conducted at Southern Illinois University-Medicine Clinics and Memorial Medical Center. This is a prospective, randomized, single-blind, active control trial for patients undergoing elective lobectomy. Participants will be randomly assigned to receive either Liposomal Bupivacaine 1.3% or Bupivacaine-Epinephrine 0.25%, 1:200,000 during surgery. Pain management will be monitored via opioid usage and visual pain assessment throughout the hospital stay and at postoperative day 30, 6 month and 1 year follow up visits. Study population includes patients undergoing elective standard of care lobectomy. Based on the power analysis, 150 participants (75 in each randomized group) are required to be enrolled in the study. Taking into consideration a potential loss of 50 participants due to withdrawal, lost to follow up or other reasons, 200 participants will initially be enrolled and randomized to attain 150 participants at the end of study (1-year follow up). All patients scheduled for surgical consult with Cardiothoracic Surgery for possible video assisted thoracoscopic lobectomy will be screened for initial eligibility criteria. Informed consent form will be discussed in detail at the clinic by authorized study personnel with all participants who are willing to participate in the study. Participants will be given time to review the informed consent with family if so desired. After the participant voluntarily agrees to participate and signs the informed consent form, the inclusion/exclusion criteria will be reviewed again to ensure continued eligibility. Study data including vitals, physical examination, medications, and medical and surgical history will be recorded or obtained from the electronic health records. Participants will be randomly assigned to one of two study drugs- Liposomal Bupivacaine 1.3% or Bupivacaine-Epinephrine 0.25%, 1:200,000. At the end of surgery, study drug will be administered as per the standard FDA guidelines. Study drug will be administered by the investigator surgeon or members of surgical team under supervision of the investigator surgeon. Dose will be calculated by the surgeon based on the screening weight of each randomized participant as is done as the standard of care. Treatment compliance will be measured in terms of the subject receiving an injection of either Liposomal Bupivacaine 1.3% or Bupivacaine-Epinephrine 0.25%, 1:200,000 from the study personnel. No other forms of compliance will be measured. Reasons for any deviation will be recorded. Outcomes will be measured during post-operative hospital stay and until 1 year after surgery for extended follow up which is the standard protocol with cardiothoracic surgery. Study coordinators will be responsible for data collection and will ensure that forms are completed and signed. Protected Health Information (PHI) will be recorded for tracking the participants through the course of the study. Subjects may be assigned an identification number for unbiased analysis, and will be linked to PHI separately. Data will be collected on data collection forms and subsequently entered into REDCap. Original signed consent forms, data collection forms and any relevant source documentation will be maintained for the duration of the study in locked file cabinets in the department of Cardiothoracic Surgery, Southern Illinois University, Springfield, IL. Electronic data will be stored on a secure server accessible via password-protected computer. Only authorized study personnel will have access to the study data. After completion of data analysis and final manuscript(s) approval, all non-electronic records will be sent to university records management for extended storage. Records will be stored for such a period after study completion as dictated by the university regulations. Adverse events, serious adverse events, discontinuation of drug administration due to adverse events will monitored for both the study drugs and will be reported to the Institutional Review Board.