Trial of Injected Liposomal Bupivacaine vs Bupivacaine Infusion After Surgical Stabilization of Rib Fractures
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|ClinicalTrials.gov Identifier: NCT03305666|
Recruitment Status : Active, not recruiting
First Posted : October 10, 2017
Last Update Posted : August 4, 2020
|Condition or disease||Intervention/treatment||Phase|
|Drug Effect Rib Fractures Rib Trauma Surgical Procedure, Unspecified Pain; Catheter (Other) Nerve Pain Local Infiltration Anesthesia, Local Intercostal Rib Opioid Dependence Chest Injury Trauma Pneumonia||Drug: Liposomal bupivacaine injection Drug: Bupivacaine indwelling catheter||Phase 4|
Rib fractures represent a common injury pattern with high associated morbidity and mortality. Effective pain control in both the acute and long term periods remains a challenge. Surgical stabilization of rib fractures (SSRF) is now a recommended treatment for patients with severe chest wall injuries. In addition to stabilization of the chest wall, SSRF offers a unique opportunity to deliver directed, loco-regional anesthesia. Loco-regional anesthesia is a recognized, essential component of multi-modal anesthesia for patients with rib fractures in order to both decrease pain and minimize the use of opioids and their associated side effects.
Delivery options for loco-regional anesthesia to patients with rib fractures share in common the intention of anesthetizing the intercostal nerves. Moving from the spinal cord laterally, modalities include thoracic epidural catheters, paravertebral blocks or catheters, and rib/intercostal blocks. Although rib blocks may be accomplished via a variety of techniques, the two most common intra-operative techniques are video-assisted thoracoscopic surgery (VATS) intercostal nerve blocks and indwelling, subscapular catheters In general, neuraxial modalities such as thoracic epidural and para-vertebral injections/catheters are subject to a wide array of limitations, including patient coagulopathy (International Normalized Ratio > 1.5), co-existing spine fractures, peri-insertion, peri-removal withholding of venous thromboembolism pharmacoprophylaxis, and provider availability. For these reasons, our current practice is to insert a subscapular "pain catheter" at the conclusion of the SSRF operation; this catheter is able to deliver a continuous infusion of 0.25% bupivacaine and may be left in place for several days.
Although favorable results using the pain catheter have been published in patients with rib fractures who have not undergone SSRF, we have noticed several limitations to this treatment modality. First, position is highly variable; and, because the catheter is not truly in the space of the intercostal nerves, drug delivery is likely irregular. This variability may be particularly relevant in obese patients; and the median body mass index of patient who underwent SSRF at Denver Health is 29 kg/m^2. Beyond catheter placement, we have also experienced issues with leakage of drug from the skin entry site of the catheter. Moreover, catheters frequently become dislodged or inadvertently removed during patient transport. Further, the indwelling foreign body likely introduces some risk of infection. Finally, the presence of the catheter is distressing to many patients.
Liposomal bupivacaine (Exparel, Pacira Pharmaceuticals, Inc., Parsippany, NJ, www.pacira.com) has been shown to provide sustained analgesia for up to 72 hours following a single injection of the drug delivery system. The safety and efficacy of liposomal bupivacaine has been evaluated in over 1,300 subjects and 21 clinical trials. Although many of these trials have included thoracic surgery patients, no trial has evaluated the efficacy and safety of liposomal bupivacaine administered to patients with rib fractures undergoing SSRF. Potential benefits as compared to current practice include directed injection immediately adjacent to the intercostal nerve using a VATS approach, as well as obviation of the need for an indwelling catheter. The hypothesis of the current clinical trial is that, among patients undergoing SSRF, liposomal bupivacaine delivered via video assisted thoracic surgery (VATS) is an intercostal nerve block that provides comparable analgesia to the pain catheter, as measured by pulmonary function, numeric pain scoring, and postoperative narcotic use.
|Study Type :||Interventional (Clinical Trial)|
|Actual Enrollment :||34 participants|
|Intervention Model:||Parallel Assignment|
|Intervention Model Description:||Non-inferiority, randomized, clinical trial|
|Masking:||None (Open Label)|
|Official Title:||A Randomized Clinical Trial of Single Dose Liposomal Bupivacaine Delivered Via VATS Intercostal Nerve Block vs. Continuous Bupivacaine Infusion Delivered Via Indwelling Subscapular Catheter After Surgical Stabilization of Rib Fractures|
|Actual Study Start Date :||October 5, 2017|
|Actual Primary Completion Date :||July 20, 2020|
|Estimated Study Completion Date :||December 31, 2020|
Active Comparator: Bupivacaine indwelling catheter
Bupivacaine indwelling OnQ pain pump catheter will be placed in the subscapular space at the time of surgery, at infusion of 12 ml/hr of 0.25% bupivacaine, and left in place for a maximum of 120 hours
Drug: Bupivacaine indwelling catheter
Bupivacaine indwelling OnQ pain pump catheter is placed in the subscapular space at the time of SSRF for continuous bupivacaine infusion post op
Other Name: OnQ pain pump, Continuous infusion of bupivacaine
Active Comparator: Liposomal bupivacaine injection
A single injection of liposomal bupivacaine: mixture of 20 mL liposomal bupivacaine, 20 mL 0.25% bupivacaine, and 10 mL sterile saline (50 mL total), will be delivered in the intercostal space during VATS (with a 178 mm, 22 gauge needle, at ribs 3-8).
Drug: Liposomal bupivacaine injection
A single injection of liposomal bupivacaine is administered at the time of SSRF, directly to the fracture site via VATS
Other Name: Exparel
- Daily Standardized Assessment of Respiratory Function (SCARF) score [ Time Frame: 28 days ]Everyday at 10 am, SCARF score will be documented. SCARF score consist of numeric pain score > 4, incentive spirometry < 50% predicted, poor cough (as documented by the respiratory therapist), respiratory rate ≥ 20 breaths per minute
- Daily narcotic requirements using equi-analgesic doses [ Time Frame: 28 days ]Everyday at 10 am, documentation of how much narcotic pain medication patient is using, recorded by standardized dosing equivalents
To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT03305666
|United States, Colorado|
|Denver, Colorado, United States, 80204|
|Principal Investigator:||Fredric Pieracci, MD MPH||Denver Health and Hospital|