Active clinical trials for "Pain, Postoperative"

The purpose of this study is to determine whether maintaining an apical patency causes postoperative pain in posterior teeth with necrotic pulp and apical periodontitis.

Endoscopic sinus surgery (ESS) is a prevalent surgical procedure. It is required in many chronic rhinosinusitis for whom the medical treatment failed. In order to improve the postoperative management of patients treated with ESS, we aim to assess the analgesic action of local injection of ropivacaine in the nasal fossa.

Primary: To compare the post-operative pain in patients with neck extension and without neck extension. Secondary: To determine the benefit of neck exposure and peri-operative complications, which include duration of operation, intra-operative blood loss, recurrent nerve (RLN) injury and hypocalcaemia in both groups. Hypothesis: Patients who undergoing thyroidectomy without neck extension will have less post-operative pain and there are no significant difference of post-operation complications between both groups.

Ultrasound have been shown to improve the time needed to locate and block nerves in the non obese population. However, its utility is still unknown in the obese population. Ultrasound is known to produce poorer quality images in the obese population. This study aims to find out if it is a better tool for nerve localization compared to the traditional nerve stimulation technique.

Injection of local anesthetic drugs is an effective way to freeze (block) nerves to achieve loss of sensation during surgery and satisfactory pain control afterwards. Many studies have shown that nerve block is associated with higher degree of success in controlling pain after open inguinal hernia repair. Nerve block can be administered by a single injection with a long acting local anesthetic agent using ultrasound guidance. This study is to compare different techniques for freezing the nerves responsible for pain after open inguinal hernia repair. Patients will be randomized to one of two groups. In the first group, participants will receive ultrasound-guided nerve block following induction of general anesthesia but prior to surgical procedure. In the second group, participants will receive local anesthetic injection directly into the wound by the surgeon prior to closure. The investigators will assess the level of pain control for 48 hours after the surgical procedure. Patients will be provided with additional medications for pain relief if necessary. The investigators will also contact participants to follow-up with regard to possible chronic groin pain after 3 months following the surgical procedure.

Ventral hernia repair may be associated with significant postoperative pain. Pain is typically managed with intravenous (IV) and oral medications that come with their own risks, such as nausea, constipation, sedation, respiratory depression, increased bleeding, and/or kidney or liver dysfunction. The quadratus lumborum peripheral nerve block has been shown to produce anesthesia of the anterior abdominal wall in the T7 to L1 distribution. This study aims to evaluate if the addition of the quadratus lumborum peripheral nerve block (QLB) can improve pain scores, decrease the need for IV and oral pain medications, and/or speed the patients' return to normal activity.

Evaluating analgesic effect of intraoperative magnesium sulfate infusion in the outpatient surgery case

To compare two methods of post-operative pain management in patients undergoing total hip arthroplasty. There is a perception that the periarticular injections may not be as effective in controlling post-operative pain. Both methods are current standard of care. The investigators want to compare the outcomes of each when patients are randomized to one of the methods compared to the other method of post-operative pain control.

This trial is a part of the project: 'A novel technique for reliable, precise and safe postoperative pain management' (project no. 65-2014-3). The purpose of the trial is to investigate the effects of changing peri-neural infusion rates of ropivacaine 0.2% on the duration of nerve block. Intervention: Two intervention-days. Each day a peri-neural infusion of a fixed volume of ropivacaine 0.2% is to be infused in one of five infusion rates, using a peri-neural catheter. Intervention day 1: Focus on the common peroneal nerve. Intervention day 2: Focus on the sciatic nerve.

This is a single-center, randomized, prospective study evaluating the effect of serratus anterior plane block performed after induction of anesthesia, but before the start of surgery on postoperative opioid requirements. The hypothesis of the study is that serratus anterior plane blocks are relatively simple to perform, provide good postoperative analgesia, facilitate early tracheal extubation, and reduce the length of hospital stay after pediatric cardiac surgery through a thoracotomy.