View clinical trials related to Hyperalgesia.
Filter by:This research study explores whether a beta-blocker (propranolol) can prevent a person from becoming more sensitive to pain after administration of an opioid (remifentanil). Beta blockers inhibit the sympathetic (fight or flight) response and are often used to treat angina and high blood pressure. In a previous study in human volunteers, the investigators demonstrated an increased sensitivity to pain after a 60-minute infusion of the opioid remifentanil. The goal of this study is to identify a possible inhibitor of this phenomenon.
Utilizing a double-blind, placebo-controlled design, the proposed work will evaluate the ability of an adjuvant anticonvulsant analgesic to diminish or reverse the opioid-induced hyperalgesia complicating the pain states suffered by Methadone-Maintained (MM) patients. Specifically, in a sample of MM patients, gabapentin, which has proven efficacy in treating neuropathic pain will be evaluated for its ability to ameliorate or diminish the opioid-induced hyperalgesia in these patients as reflected by changes on pain threshold and tolerance to both cold-pressor and electrical pain, at peak and through methadone blood levels. The results of this work will not only provide pharmacologic insight into the mechanisms underlying poor pain tolerance in this at-risk population, but also direction for the medical management of pain complicated by opioid-induced hyperalgesia.
In this multicenter, randomised, placebo-controlled, double-blind trial, hyperalgesia area around the scarce following colorectal laparoscopic surgery (piece removal) will be assessed in 3 groups of patients : group 1: continuous ropivacaine preperitoneal infusion, group 2 : intravenous lidocaine infusion, or group 3 : control group without local anesthetics. All patients will receive parenteral analgesia combining acetaminophen and morphine.
The purpose of this study is to study the effect of intraoperative magnesium on remifentanil-induced postoperative hyperalgesia after thyroidectomy
The purpose of this study is to determine whether a transversus abdominis plane (TAP) block with Clonidine added to the injectate (Clo-TAP) performed approximately 2hrs after the cesarean section (CS) will decrease the amount of postoperative hyperalgesia and ultimately reduce post-CS chronic pain.
The purpose of this study was to follow a person's response to experimental pain after multiple consecutive exposures to alfentanil or diphenhydramine to see if the person can tolerate the pain more, less, or the same at the end of the study.
This study aims to better understand the way in which painful osteoarthritis affects different people and whether an anti-inflammatory medication such as Arcoxia (etoricoxib) can help to modify this pain. The study will use questionnaires and tests of pain sensitivity to identify arthritis sufferers with more widespread, nerve-type pain and then to investigate whether a daily dose of Arcoxia is more effective than a placebo pill in reducing these symptoms and improving functional movements. The study will also be comparing the same test results of a small group of subjects without knee pain.
The purpose of this study is to compare the effect of intravenous ropivacaine and lidocaine on the receptive field of primary sensory afferents and their influence on the vascular bed. *Trial with medicinal product
We want to analyse a possible effect of o dialy consumption of Lactobacillus farciminis on a hyperalgesia on response to thermal stimulation. A comparaison of results before and after three weeks of treatment will be made.
The purpose of this study is to compare pain threshold, pain tolerance, and wind up, as measured by QST, before and after a single dose of ketamine infusion under two clinical conditions: chronic pain patients on opioid therapy and chronic pain patients without opioid therapy.