Lidocaine Patches After Cesarean Section

Postoperative Pain, Obstetric Pain, Opioid Use

The aim of this study is to investigate the impact of using lidocaine patches after cesarean section on pain control and opioid use in the immediate post-operative period. The hypothesis is the use of lidocaine patches in the immediate post-operative period will lead to a decrease in the visual analog pain score compared to women who do not use a lidocaine patch in the immediate post-operative period following cesarean delivery. Additionally, a decrease in the use of opioids as pain control compared to patients that do not have a lidocaine patch in place the is anticipated.

The use of lidocaine as a local anesthetic is a common and widely used in practice. Lidocaine patches can be used for localized pain control and can be placed every 24 hours. The use of lidocaine patches in post-operative patients has been reported in one case report in obstetric literature. There is one study that reports decreased immediate postoperative pain when lidocaine patches were placed at laparoscopic port sites following gynecologic surgery as measured by visual analog scale score and the Prince Henry and 5-point verbal rating pain scale. There have been no studies looking at the impact of lidocaine patches in obstetric surgical procedures, specifically cesarean sections. Cesarean sections are one of the most common surgeries in the United States. Following cesarean sections it is common to utilize opioids in the hospital and upon discharge to manage patient's post-operative pain. According to the CDC overdose deaths involving prescription opioids were five times higher in 2017 than in 1999 with over 200,000 deaths. This creates an opportunity to decrease the use of post-operative opioids with the application of a lidocaine patch as an adjunctive post-operative pain management modality following cesarean sections. Lidocaine patches are a common topical analgesia therapy used for localized pain control in the inpatient and outpatient setting. It's use in the postoperative period is less understood and the use of topical lidocaine patches has not been thoroughly investigated in the surgical literature. Thus far, it has been shown as an effective therapy at laparoscopic port sites following laparoscopic appendectomies. It's use in obstetrical surgeries has not been studied. Overall, the limited research on this topic making it a valuable area of research. This study will involve prospective enrollment of women undergoing cesarean deliveries. Women will be randomized to receive a lidocaine patch or no lidocaine patch to be worn for 72 hours after delivery to help manage postoperative pain. This will be an adjunctive therapy in addition to the parental and oral narcotic pain medication that is routine prescribed. The utility of lidocaine patches for management of post-cesarean delivery pain will be assess by 2 measures. The first measure will involve the total daily dose of narcotic used in morphine equivalent doses. The second outcome assessed will be subjective pain as measured on a 1-10 scale and reported by the patients to nursing staff. This score will be averaged for each 24 hour period post-operatively.

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