Tegileridine for Postoperative Pain After Adolescent Scoliosis Surgery

Condition(s) studied

Investigational drug(s) / intervention(s)

Tegileridine: Tegileridine is a novel μ-opioid receptor-biased agonist. In this study, it is administered as an initial intravenous loading dose immediately followed by patient-controlled analgesia (PCA) for postoperative pain management. The PCA solution is prepared by diluting the Tegileridine injection in normal saline.

morphine: Morphine is a standard opioid analgesic used as the active comparator in this study. It is administered as an initial intravenous loading dose immediately followed by patient-controlled analgesia (PCA) for postoperative pain management. The PCA solution is prepared by diluting Morphine injection in normal saline.

Study summary

The goal of this clinical trial is to see if a new pain medicine called Tegileridine is at least as effective as morphine (the standard treatment) for pain relief after spinal surgery in teenagers with scoliosis. This type of study is called a "non-inferiority" trial. The study will also carefully compare the safety of both medicines.

The main questions it aims to answer are:

Is Tegileridine no worse than morphine at controlling pain in the first 24 hours after surgery? How do the side effects (like sleepiness or nausea) of Tegileridine compare to those of morphine? Researchers will compare two different doses of Tegileridine against morphine. Neither the participants nor the doctors assessing them will know which medicine is being given.

Participants in this study will:

Receive one of the three pain medicine options through a pump (called a PCA pump) that they can control themselves after surgery.

Use the pump for up to 48 hours. Regularly rate their pain levels using a simple number scale. Have their health closely monitored by the study team during this time.

Eligibility

Primary outcome measure(s)

• Area Under the Curve (AUC) of Resting Pain Scores on the 11-point Numerical Rating Scale (NRS) Over the First 24 Hours Postoperative — From the end of the loading dose infusion up to 24 hours.
  The analgesic efficacy will be assessed by calculating the Area Under the Curve (AUC) of the resting pain intensity scores over the first 24 hours after initiating Patient-Controlled Analgesia (PCA). Pain Intensity Measurement: Pain intensity is assessed by the participant using an 11-point Numerical Rating Scale (NRS), where 0 represents "no pain" and 10 represents "the worst pain imaginable." Resting state is defined as being in a stationary position without active movement. Assessment Time Points: NRS scores are recorded at predefined time points: 5 minutes, 10 minutes, 15 minutes, 30 minutes, 2 hours, 4 hours, 6 hours, 8 hours, 10 hours, 12 hours, 18 hours, and 24 hours after the end of the loading dose infusion. AUC Calculation: The AUC for the NRS scores versus time is calculated using the trapezoidal rule, which sums the areas of trapezoids formed between consecutive time points. A lower AUC indicates better and more sustained pain control over the 24-hour period.

Trial sites (6)

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