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Artificial Intelligence to Evaluate Postoperative Pain Based on Facial Expression

Artificial Intelligence to Evaluate Postoperative Pain Based on Facial Expression Recognition and Analgesia Nociception Index

Status
Recruiting
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT05477303
Enrollment
120
Registered
2022-07-28
Start date
2022-06-17
Completion date
2026-05-09
Last updated
2022-07-28

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Analgesia, Artificial Intelligence, Facial Expression, Pain, Postoperative

Brief summary

Patients' subjective complaints about pain intensity are difficult to objectively evaluate, and may lead to inadequate pain management, especially in patients with communication difficulties.

Detailed description

Analgesia nociception index (ANI 0-100) and patient-reported numeric rating scale (NRS 0-10) were trained on a convolutional neural network (CNN) model by linking the patients' facial expression with the score. By applying the predicted pain score by the AI model to evaluate pain, it is intended to measure the intensity of pain in an automatic, fast, and objective way for appropriate pain management.

Interventions

OTHERtaking a picture of a painful facial expression

Immediately after surgery, the patient's facial expression and the NRS score and ANI score reported by the patient are checked together.

Sponsors

Seoul National University Bundang Hospital
Lead SponsorOTHER

Study design

Observational model
COHORT
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
ALL
Age
19 Years to 75 Years

Inclusion criteria

* Patients aged 19-75 years who were scheduled for elective laparoscopic abdominal surgery under general anesthesia * American Society of Anesthesiology (ASA) class I-II

Exclusion criteria

* Patients who have difficulty in communicating and reporting pain * Underlying diseases: liver, kidney, brain * Patients with BMI greater than 30 and less than 18.5 * Alcohol or drug dependent patients * Patients with severe or acute respiratory failure * Opioid, NSAID allergy * Patients who are scheduled to be admitted to the intensive care unit after surgery * Patients who undergo cooperative surgery

Design outcomes

Primary

MeasureTime frameDescription
Facial expressionimmediately preoperative, postoperative timePainful facial expression
analgesia nociception indeximmediately preoperative, postoperative timeANI score
numeric rating scaleimmediately preoperative, postoperative timepain score

Countries

South Korea

Contacts

Primary ContactInSun Park, MD
pis121@hanmail.net82317877499

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 9, 2026