Clinical Research Directory

Intraoperative Sufentanil and Chronic Postsurgical Pain in Non-major Scheduled Abdominal Surgery

Several risk factors for chronic postoperative pain have been identified. A series of studies have shown that administrating intraoperatively a high dose of Remifentanil is associated with an increased incidence of CPSP. These findings highlight a risk factor for CPSP that the anaesthetist can influence on, but they however remain limited to remifentanil. To this day, no study have attempted to evaluate the existence of such an association between the incidence of CPSP and the intraoperative administration of sufentanil doses. Improved knowledge of the long-term nociceptive impact of intraoperative sufentanil administration would enable better therapeutic adaptation according to each patient's risk. In the field of CPSP, non-major abdominal surgeries remain poorly studied. This is due to their lower risk of CPSP than other surgeries such as orthopaedic, mammary or thoracic surgery. Nevertheless, they constitute a large number of daily surgical procedures. The estimated incidence of CPSP in non-major abdominal surgery appears in several studies to be between 15 and 20% The aim of this study is to evaluate the correlation between the intraoperative administration of sufentanil doses and the incidence of CPSP at 3 months in patients undergoing non-major scheduled abdominal surgery.

Dexmedetomidine-esketamine-ropivacaine Versus Sufentanil-ropivacaine for Epidural Labor Analgesia

Sufentanil-ropivacaine combination is commonly used for epidural labor anesthesia, but is associated with some adverse events. Dexmedetomidine and esketamine, each has been effectively used for neuraxial anesthesia in combination with local anesthetics. Plenty of evidences show that both dexmedetomidine and esketamine, combined with ropivacaine, are also effective as the sufentanil-ropivacaine combination when used for epidural labor analgesia. This pilot trial is designed to evaluate the efficacy and safety of the dexmedetomidine-esketamine-ropivacaine versus sufentanil-ropivacaine combination for epidural labor analgesia, and to test the feasibility of a future large randomized trial.

Comparison of the Analgesic Effect of Oliceridine Versus Morphine or Sufentanil for Postoperative Analgesia in Lumbar Surgeries: a Randomized Control Trial

Objective: To compare the application of oxelidine in postoperative analgesia after orthopedic lumbar spine surgery with morphine or sufentanil, and to explore the efficacy and safety of postoperative analgesia. Method: Researchers included 90 patients with American Society of Anesthesiologists (ASA) physical conditions I and III, aged 18 to 65 years, who were scheduled to undergo orthopedic lumbar general anesthesia surgery at an appropriate time. The patients were randomly divided into 3 groups, with 30 cases in each group: The oxeridine group (Group A), where a loading dose of 1.5mg of oxeridine was intravenously injected. Ten minutes later, an intravenous analgesic pump of 0.01mg/kg-1.h-1 was connected. Oxeridine was mixed with normal saline to 100ml at a rate of 2ml/h. Morphine group (Group M), a loading dose of 4mg of morphine was intravenously injected. Ten minutes later, an intravenous analgesic pump of 0.03mg.kg-1.h-1 morphine was connected with normal saline to 100ml at a rate of 2ml/h. Sufentanil group (Group S), a 4u loading dose of sufentanil was intravenously injected. Ten minutes later, an intravenous analgesic pump of 0.03ug.kg-1.h-1 was connected. Sufentanil was combined with normal saline to 100ml at a rate of 2ml/h.The resting and exercise VAS pain scores of the three groups of patients at 30 minutes, 2 hours, 6 hours, 12 hours, 24 hours and 48 hours after the operation and adverse reactions within 48 hours were recorded.