Development and Validation of a Risk Prediction Model for Postoperative Visceral Pain in Abdominal Surgery Patients

Launched by THE SECOND AFFILIATED HOSPITAL OF CHONGQING MEDICAL UNIVERSITY · Jun 24, 2025

Keywords

ClinConnect Summary

This clinical trial is studying how to predict the risk of experiencing pain inside the abdomen (called visceral pain) after abdominal surgery. The researchers want to create a tool that can help doctors know before surgery which patients are more likely to have this kind of pain. This could help doctors plan better pain relief and care tailored to each patient’s needs.

The study is looking for adults aged 18 to 70 who are having planned (not emergency) abdominal surgeries that last at least two hours, such as surgeries involving the stomach, liver, or reproductive organs. To join, patients should be generally healthy enough for surgery (but with some minor health issues) and should not have had previous abdominal surgeries, ongoing chronic pain, or be using long-term pain or mental health medications. Participants will be followed after their surgery to track their pain levels. This study isn’t recruiting yet, but it aims to improve how pain is managed after surgery, making recovery more comfortable for future patients.

Gender

ALL

Eligibility criteria

• Inclusion Criteria:
• • Patients undergoing elective abdominal surgery under general anesthesia (including gynecological procedures and general surgery such as gastrointestinal, hepatobiliary, etc.);
• • Aged between 18 and 70 years;
• • Classified as American Society of Anesthesiologists (ASA) physical status II-III;
• • Expected surgery duration ≥ 2 hours.
• Exclusion Criteria:
• • History of previous abdominal surgery;
• • Diagnosed with chronic pain;
• • Long-term use of analgesics or other psychotropic medications;
• • Preoperative emergency condition;
• • Presence of severe comorbidities involving major organ systems;
• • Failure to complete postoperative pain follow-up.