View clinical trials related to Nerve Block.
Filter by:This prospective, randomized ,control study aims to compare the analgesic effect,quality of recovery, length of hospital stay ,et al. between single-injection QLB(quadratus lumborum block)+general anesthesia (GA) and general anesthesia (GA) alone in patients undergoing laparoscopic adrenalectomy.
Do ultrasound-guided genicular nerve blocks with 0.5% bupivacaine provide improved knee analgesia for patients recovering from total knee replacement surgery compared to saline injection? Hypotheses: The investigators hypothesize that the combination of ultrasound-guided adductor canal block (ACB) and genicular nerve block will achieve lower opioid consumption and therefore lead to decreased systemic side effects and improved overall satisfaction compared to ultrasound-guided saline injection for patients undergoing minimally invasive elective total knee arthroplasty (TKA).
This prospective, randomized study, control study aims to compare the analgesic effect, opioids consumption, quality of recovery, length of hospital stay and et al. between unilateral continuous quadratus lumborum block (QLB) and intravenous patient-controlled analgesia (IPCA) alone in patients undergoing hepatectomy with right J-shape subcostal incision.
The purpose of this study is to establish an alternative method of postoperative pain control to the current standard of practice, patient-controlled analgesia with intravenous opioids, for patients undergoing a major major abdominal surgery at the University of Alberta Hospital. The primary objective is to determine whether a continuous transversus abdominis plane (TAP) block, run until the third postoperative day, will reduce the amount of intravenous morphine required. Additionally, the investigators propose to measure the amount of local anesthetic (lidocaine) in the blood during this time frame to provide patient safety data for this procedure. This will be a prospective controlled randomized double-blind clinical trial. The patients, anesthesiologists and staff providing post operative care will be blinded to group assignment. Patients will be randomized by sealed envelopes.
Blockade of the brachial plexus using a supraclavicular approach provides excellent anesthesia for upper extremity surgery. The most serious complication specific to this block is pneumothorax. Subsequent modifications of this block including the use of ultrasound have lowered the risk from 6% to <1%. Case reports remain and authors have described certain factors and strategies to reduce this risk. Most texts and journals describe the patient in a supine or semi-sitting position during the block. At the investigators institution the investigators perform the block in a semi-sitting position to facilitate needle tip visibility with ultrasound. The investigators plan to obtain ultrasound anatomic measurements in three different positions (supine, semi-sitting, sitting) using patients consented for supraclavicular nerve blocks.
Ropivacaine 0.5% and 0.5% in levobupivacaïne are used in regional anesthesia for major surgery of the foot. The literature does not highlight a significant difference in terms of onset of action between these two molecules to block the sciatic nerve [4]. Our hypothesis is that this lack of difference is due to the use of a neurostimulator for locating the injection site (indiscriminate nature of the anatomical approach to the sciatic nerve). Indeed, the sensitivity of neurostimulation is low compared with ultrasound [58] and ultrasound, for accurate visualization of the deposit of the local anesthetic around the nerve to improve the quality of the block and reduce the onset of action of local anesthetic [46, 47]. The investigators propose to make a comparative trial between levobupivacaïne 0.5% ropivacaine and 0.5% under the control of the ultrasound as part of a sciatic nerve block. The use of ultrasound will reduce the variability of results because the changes would be linked exclusively to the local anesthetic. The investigators test the hypothesis that levobupivacaïne gives better results in terms of onset of action than ropivacaine.