Clinical trial Recruiting at 1 site Observational Ages 18 and up

Study on complications and long-term outcomes after high-risk surgeries

Official title: Perioperative Longitudinal Study of Complications and Long-term Outcomes

Run by UMC Utrecht · NCT05331118 · Data updated 2026-11-12

This study is trying to see how well we can predict and identify complications in patients having high-risk surgeries by monitoring them closely after their operations.

Quick facts

Study typeObservational
Ages18 Years and up
SexAll
Enrollment9000 (estimated)
SponsorUMC Utrecht
Academic / other
Locations1 site (Utrecht)
StatusRecruiting
StartedFebruary 21, 2020
Main results expectedFebruary 21, 2040
Study endsFebruary 21, 2040
Registry record updatedNovember 29, 2023
Trial IDNCT05331118 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are adults undergoing elective high-risk gastrointestinal or vascular procedures, or intermediate-risk surgeries with specific criteria.

Probably not a fit

Patients under 18 years, those requiring emergency surgery, or individuals with severe anemia will not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This observational study aims to improve preoperative risk assessment and early diagnosis of complications in patients undergoing elective intermediate to high-risk non-cardiac surgeries. Participants will be monitored daily for the first week post-surgery by dedicated observers who will assess clinical events and perform non-invasive physiological measurements. Additionally, blood and microbiome samples will be collected at various time points to establish a comprehensive biorepository for future research. The primary outcomes focus on the occurrence of infections, major cardiac events, and pulmonary complications.

Why it matters

Potential benefit: If successful, this study could enhance postoperative recovery and improve long-term outcomes for patients undergoing high-risk surgeries.

How similar studies have gone: While similar observational studies have been conducted, this specific approach to establishing a biorepository for perioperative complications is relatively novel.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

\- Undergoing an elective, high-risk gastro-intestinal or vascular procedure, or intermediate risk procedure (including gynaecological, orthopaedic and head and neck surgery) if the procedure includes a laparotomy and/or is associated with a scheduled hospital length of stay ≥ 5 days.

Exclusion Criteria:

* \< 18 years of age
* Emergency surgery
* Severe anaemia (Hb \< 4.5 mmol/L)
* Unable to provide informed consent

Where it's running

  • University Medical Center Utrecht
    Utrecht, Netherlands
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 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.