Department of Anesthesiology, The Second Affiliated Hospital, Chongqing Medical University
Chongqing, Chongqing Municipality, 400010, China
Not Yet Recruiting
NCT Number: NCT07048782
Development and Validation of a Risk Prediction Model for Postoperative Visceral Pain in Abdominal Surgery Patients
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.
Not Yet Recruiting
Trial opening soon.
Get NotifiedKey information
Conditions
Age range
18 year–70 year
Sex eligibility
All sexes
Study type
Observational
Primary location
Who can participate
Only the study team can determine whether someone qualifies for participation.
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.
Treatment and study plan
Observational assessment of clinical outcomes
OtherThis is a non-interventional observational study. No treatment or behavioral intervention is administered.
Primary outcomes
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Pain intensity after surgery
Time frame: 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)
Secondary outcomes
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Postoperative Length of Hospital Stay
Time frame: From end of surgery to hospital discharge (up to 30 days)
The total time from the end of surgery to hospital discharge will be recorded for each patient. The duration will be measured in days (d) and used to assess postoperative recovery.
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Postoperative Analgesic Use
Time frame: From end of surgery to hospital discharge (up to 30 days)
Detailed records will be kept of the types of analgesics administered postoperatively, the total dosage of each drug, and the frequency of use per day. This measure will help assess pain management and medication requirements after surgery.
Study contacts
Contact information is provided by the study sponsor or research team.
Sponsors and collaborators
Lead sponsor
The Second Affiliated Hospital of Chongqing Medical University
Other
Registry information
Important dates
- Study start
- 2025
- Primary completion
- 2025
- Study completion
- 2026
- First posted
- Jul 2, 2025
- Registry last updated
- Jul 2, 2025
OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.
View the official ClinicalTrials.gov record (opens in a new tab)This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.