Documenting opioid use and pain management after surgery

Pain and Opioids After Surgery (PANDOS) Study

Observational University of Aberdeen · NCT05877157

This study looks at how opioids are used for pain management after surgery in adults to see how it affects their recovery and quality of life over time.

Quick facts

Study typeObservational
Enrollment10000 (estimated)
Ages18 Years and up
SexAll
SponsorUniversity of Aberdeen Academic / other
Locations4 sites (Zagreb, Vinogradska 29 and 3 other locations)
Trial IDNCT05877157 on ClinicalTrials.gov

What this trial studies

This observational study aims to collect data on perioperative opioid use and its safety across hospitals in the UK and Europe. It will involve hospitalized adult patients undergoing surgery during a designated week, with follow-ups at one week, three months, and twelve months post-surgery. The primary focus is on opioid use three months after surgery, while secondary outcomes include preoperative pain, persistent pain, and quality of life. The study seeks to understand the relationship between opioid use and surgical complications.

Who should consider this trial

Good fit: Ideal candidates are hospitalized adults aged 18 and older undergoing any inpatient surgery during the designated study week.

Not a fit: Patients classified as ASA grade V or VI, or those unable to provide informed consent, may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could improve pain management strategies and reduce opioid-related complications for surgical patients.

How similar studies have performed: Other studies have explored opioid use in postoperative settings, indicating potential for meaningful insights, though this specific approach may be novel.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* hospitalised adult patients (18 years and older) undergoing any inpatient surgery (elective or emergency) during the designated study week where an anaesthetist is involved (general anaesthetic, sedation, local anaesthetic).

Able to understand and has capacity to give written informed consent

Exclusion Criteria:

* American Society of Anaesthesiologists (ASA) grade V or VI
* Refusal to participate.
* Lack of comprehension of validated questionnaires or inability to complete the follow-up for any reason.
* Lack of capacity to give written informed consent

Where this trial is running

Zagreb, Vinogradska 29 and 3 other locations

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Opioid UsePain, ChronicPain, PostoperativeQuality of Life
Last reviewed 2026-06-09 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.