Active clinical trials for "Pain, Postoperative"

A prospective randomized trial will be performed. Patients undergoing gastric bypass will be randomized into 2 groups: patients undergoing laparoscopic-guided transversus abdominis plane (TAP) block as part of multimodal analgesia (Group 1), associated with postoperative intravenous analgesia, and patients receiving only postoperative intravenous analgesia (Group 2). Postoperative pain will be assessed with a Visual Analogic Scale 24h after surgery and morphine needs will be quantified.

Adequate analgesia in thoracic surgery is essential to prevent severe postoperative complications, especially respiratory problems. Current knowledge about gender-related differences in pain states generally more frequent and intense pain and more demand for analgesics in women. Results about postsurgical pain in particular are very inconclusive. The investigators tried to find out if gender has an influence on postthoracotomy pain and analgesics requirement.

Post Mastectomy Pain Syndrome (PMPS) is a major complication of breast surgery responsible for depression and disability. The project consists of a prospective cohort on patients going for oncological breast surgery at National Institute of Oncology of Rabat. Chronic postoperative pain (CPP) remains a disturbing and obscure clinical problem, which could last for more than 3 months after surgery. The aim of present study was to assess the prevalence of CPP, investigate its impact on life quality and explore its potential risk factors. After informed consent was signed, patients receiving surgery under general anesthesia in Peking Union Medical College Hospital and other medical centers participating in this study during 2018 will be included. Patients' preoperative information will be collected from medical record, including basic demographic data, primary disease and previous chronic diseases. Intraoperative information will be obtained from anesthesia record, including surgical scope, duration, length and location of incisions and blood loss. Acute pain will be evaluated in the ward of the department of surgery, when an app will be installed on patients' mobile phones. Our long-term postoperative follow-up would be performed by sending out survey questionnaires via this app in the 4th, 8th, 16th, 32th, and 48th weeks after surgery. The survey covers questions regarding the intensity, characteristic, location and impact on daily activities of CPP. Information regarding treatment of CPP will also be collected, if any. All the data gained will be summarized in our database and analyzed.

One out of 10 patients undergoing surgery develops persistent post-surgical pain (PPSP). Unfortunately, available therapies for treating this pain have limited success. It is therefore of great importance to find strategies to prevent PPSP. The goal of this project is to find new screening tools that identify patients that are at risk for developing PPSP. Tissue injury and inflammation following surgery increase the excitability of spinal nociceptive neurons ("central sensitisation", CS) with pain hypersensitivity as consequence. It is thought that CS plays an important role in persistent pain. The first objective of this project is to assess in human patients if the propensity to develop CS manifested as secondary hyperalgesia before surgery is predictive for PPSP. In addition, we will test if the frequency content of the resting-state EEG reflecting the initial state of the brain will be related to the propensity for developing CS and to the presence of PPSP at two months after surgery.

Control group: no additional procedure Low ARM group : recruitment maneuver of 30cmH2O High ARM group: recruitment maneuver of 60cmH2O

This study aims to investigate the potential association between pain sensitivity questionnaire score, the severity of postoperative pain, and postoperative analgesic requirement in patients with open colorectal cancer surgery. This information may be used to guide the optimal postoperative pain management, and ultimately improve patient's quality of life.

This is a prospective observational cohorte study. The aim is to investigate actual pain treatment and outcomes in a large population of total hip arthroplasty patients at 5 different hospitals in Denmark.

The aim of this study is to evaluate the performance of Analgesia/Nociception Index (ANI) measured at the end of surgery for the prediction of immediate postoperative pain in postoperative care unit in adult patients undergoing general anesthesia.

The purpose of this study is to test the hypothesis that a preoperative test of pain modulation predicts persistent pain 4 months after breast cancer surgery. In addition, a risk score for the prediction of persistent pain will be developed from parameters available before surgery.

This is a prospective, observational study, aimed to establish the relationship between an inefficient endogenous pain modulation before surgery (total knee arthroplasty; TKA) and the probability to develop chronic pain after surgery (persistent post surgical pain). Endogenous analgesia efficiency will be measured during the month previous to surgery using quantitative sensory testing (QST). Persistent post surgical pain will be defined as presence of pain in movement greater than 3 points in a 0-10 numerical scale in the operated knee, 6 months after surgery.