The Second Affiliated Hospital of Chongqing Medical University
Phase
Observational
Started
2025-07-01
Last updated
2025-07-02
Condition(s) studied
Postoperative Visceral Pain
Investigational drug(s) / intervention(s)
Observational assessment of clinical outcomes
Observational assessment of clinical outcomes: This is a non-interventional observational study. No treatment or behavioral intervention is administered.
Study summary
This study aims to investigate the factors influencing the risk of postoperative visceral pain in patients undergoing abdominal surgery. The goal is to develop and validate a predictive model for assessing the risk of postoperative visceral pain, in order to guide individualized preoperative interventions and pain management strategies.
Eligibility
Sex
ALL
Min age
18 Years
Max age
70 Years
Healthy volunteers
No
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.
Primary outcome measure(s)
Pain intensity after surgery — From end of surgery to 48 hours postoperatively Pain intensity will be recorded at 6, 12, 24, and 48 hours after surgery. At each time point, the Numerical Rating Scale (NRS) pain score will be assessed both at rest and during coughing. Pain intensity was assessed using number rating scale (0-10, higher score represents worse pain intensity)
Trial sites (1)
Facility
City
Region
Status
Department of Anesthesiology, The Second Affiliated Hospital, Chongqing Medical University
Chongqing
Chongqing Municipality
More The Second Affiliated Hospital of Chongqing Medical University trials in China
This page summarises publicly available registry data for informational purposes — not medical advice. Eligibility is determined by each study team; patients should discuss participation with their clinician.
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