Analgesia Clinical Trials

This study is being done to see if preoperative transversus abdominis plane (TAP) analgesia will provide similar postoperative pain control, hospital length of stay, and postoperative outcomes compared to surgeon-initiated wound infiltration with local anesthetic in participants undergoing laparotomy for gynecologic indications. Read Less

This is a prospective interventional study examining the effect of ketorolac at doses of 15mg versus 30 mg for duration of analgesia in emergency department patients with suspected renal colic. Read Less

This study will attempt to objectively measure pain with an experimental device. The investigators will apply the device to measure patients "pain" due to uterine contractions during routine clinical care to correlate patients verbal pain ratings and analgesia requirements to that measured by the device. A brain oxygenation device, Edwards Foresight, will be used to concurrently to monitor brain oxygenation and hemodynamics, so the relationship between the CereVu ROPA device objective measure of pain and brain oxygenation/hemodynamic changes and patient-reported pain can be determined. Read Less

The goal of this study is to compare the abuse potential of low-dose equianalgesic buccal buprenorphine to a commonly used full mu opioid receptor (MOR) agonist in a highly controlled experimental setting. This is a translational study in which healthy participants are phenotyped for psychosocial and Opioid-Use-Disorder-risk-related metrics. In a within-subjects crossover design, 60 participants will receive a standard postoperative oral oxycodone dose (10 mg), placebo, and 3 different doses of buccal buprenorphine across 5 separate sessions. Quantitative Sensory Testing (QST) will be used to evaluate alterations in pain responsiveness relative to placebo across buprenorphine doses and oxycodone, and will compare abuse potential (indexed by the standard FDA drug liking metric) following equianalgesic doses of the two drugs. Read Less

The goal of this study is to measure the test retest reliability of offset analgesia (OA) and onset hyperalgesia (OH) across multiple study visits. OA and OH are quantitative sensory tests (QST) thought to measure how the brain modulates pain. This study will use a heat thermode to induce OA and OH in healthy, pain-free volunteers across 3 study visits. Additional QST measures and survey data relevant to pain modulation will be collected. This study lays the foundation required to use OA and OH as tools to measure pain modulation in clinical trials. Following their validation, we anticipate that OA and OH will serve as predictive and therapeutic biomarkers, which will aid both in the development of novel analgesics and in treatment selection leading to the personalization of pain management. Read Less

This study examines the relationship between central nervous system (CNS) mechanisms of pain inhibition and the pain relief that occurs following a lumbar medial branch block (MBB). Read Less

The goal of this study is to test the hypothesis that surgical site infiltration with liposomal bupivacaine (LB) is non-inferior to and more cost effective than thoracic epidural analgesia (TEA) for patients undergoing open gynecologic surgery on an established enhanced recovery program (ERP) using a non-inferiority randomized trial design. The impact of TEA and surgical site infiltration with LB on neuroendocrine and inflammatory mediators of surgical stress response (SSR) will also be investigated as a translational endpoint. Read Less

The purpose of the study is to find out how a stimulation device worn on the ear works. This device is thought to stimulate nerves in the area around the ear to change the signals in the brain. The device has been shown to reduce pain and to reduce the symptoms of withdrawal. The investigator will also investigate changes in the way each participant perceive sensations of pressure and heat. The participant will be asked to reduce the amount of pain medication that they take. Then, the participant will spend several days and nights in the Clinical Research Center at UTMB (University of Texas Medical Branch) in Galveston. During that time, the participant will be monitored for withdrawal symptoms and will receive either active (e.g., "real") brain stimulation or sham (e.g., "fake") brain stimulation for two days (four hours each day). At two times over the course of the study (before and after ear stimulation treatment), the participant will complete questionnaires about their pain score and how they are feeling, sensory testing, and will undergo magnetic resonance imaging (MRI) of their brain. The investigator will collect the following information from the participant's medical record: age, gender, medication history, medical diagnoses, recent vital signs, past doctor visits or hospital stays, and results of urine drug tests. Participation in this study will last approximately four days, and the participant will stay in the Clinical Research Center. Read Less

This two-visit, randomized, double-blind, sham-controlled trial, uses a novel naloxone blockade model in 136 individuals to determine whether the analgesic effects of a 30-minute transcutaneous auricular neurostimulation (tAN) intervention are mediated through a release of endogenous opioids. Analgesic effects of four various stimulation interventions will be measured (auricular vagus, auricular trigeminal, combination, or sham) while varying the type of intravenous (IV) infusion (either naloxone or saline) a participant is administered to determine whether the analgesic effects are mitigated by pharmacological opioid receptor blockade. Read Less

To estimate the dose of bupivacaine required to achieve initial effective comfort in 90% of patients (ED90) via the epidural (DPE or EPL) technique in women undergoing labor after receiving a lidocaine "test dose" Read Less

With this pilot investigation, the investigators aim to challenge the reliance on opiate analgesia following colon and rectal surgery. Narcotic misuse and abuse is a pressing public health concern, and reduction in prescription rates could help to mitigate this issue. The goal of this pilot study is to establish feasibility of sufficient post-operative pain control after colectomy using non-narcotic analgesics. The investigators hypothesize that patients will be able to manage their post-operative pain without narcotic intervention, while minimizing side effects and complications. This initial pilot study will provide proof-of-concept for a larger, randomized investigation on non-narcotic analgesia after colectomy. Read Less

This will be a randomized controlled clinical trial in patients who have undergone primary unilateral total knee arthroplasty at Brigham and Women's Faulkner Hospital, Brigham and Women's Hospital and University of Chicago Medical Center. Study subjects will receive either a shared decision aid (SDA) about pain management or standard of care at the time of discharge. The impact of the SDA on the number of leftover opioid pills on postoperative day 30 and average NRS pain score on postoperative day 7 will be assessed. Read Less