Clinical trial Recruiting at 6 sites Observational Ages 18 and up

Deciphering why some patients stay a long time in the ICU using detailed clinical profiling

Official title: UP STUDY - Decipher Persistent Critical Illness Through in Deep Clinical Phenotyping.

Run by Lisbon Academic Medical Center - Centro Académico de Medicina de Lisboa · NCT07510776 · Data updated 2026-11-12

This study will try to identify clinical patterns in adults who stay in the ICU five days or longer to better understand persistent critical illness.

More Critical Illness trials

Quick facts

Study typeObservational
Ages18 Years and up
SexAll
Enrollment7000 (estimated)
SponsorLisbon Academic Medical Center - Centro Académico de Medicina de Lisboa
Research network
Locations7 sites (Lisbon, Lisbon District and 6 other locations)
StatusRecruiting
StartedJanuary 13, 2025
Main results expectedDecember 31, 2026
Study endsDecember 31, 2027
Registry record updatedApril 13, 2026
Trial IDNCT07510776 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults aged 18 or older who have been in the ICU for at least five consecutive days are the intended participants.

Probably not a fit

Patients with ICU stays under five days, those who die early in their ICU course, or those discharged early due to bed shortages are unlikely to be included or to benefit directly 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 is an observational, multi-center study enrolling adults (18+) with an ICU length of stay of five days or more to perform deep clinical phenotyping of persistent critical illness. Investigators will collect detailed data on organ support (mechanical ventilation, vasopressors), infections, medications (including corticosteroids and sedatives), mobility, delirium, laboratory results, and clinical outcomes. No experimental treatments are given; data are used to define clinical subgroups and link early risk factors to recovery trajectories. The study is conducted across several hospitals in the Lisbon district to capture real-world variability in care and outcomes.

Why it matters

Potential benefit: If successful, the findings could help clinicians predict who is likely to develop persistent critical illness and tailor care or follow-up to improve recovery.

How similar studies have gone: Previous observational studies have linked sepsis and other factors to prolonged ICU stays, but comprehensive deep clinical phenotyping to define persistent critical illness subgroups is still relatively novel.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Adult patients aged 18 years or older;
* ICU length of stay equal to or greater than 5 days.

Exclusion Criteria:

* Patients with an ICU stay \< 5 days;
* Patients discharged from the ICU early due to lack of ward availability, rather than clinical recovery;
* Patients who do not survive the early phase of critical illness (i.e., early ICU deaths).

Where it's running

  • Centro Hospitalar de São João / ULS São João
    Lisbon, Lisbon District, Portugal
    Recruiting
  • Hospital de Vila Franca de Xira / ULS Estuário do Tejo
    Lisbon, Lisbon District, Portugal
    Recruiting
  • Hospital Garcia de Orta / ULS Almada-Seixal
    Lisbon, Lisbon District, Portugal
    Recruiting
  • Hospital Prof. Doutor Fernando Fonseca / ULS Amadora -Sintra
    Lisbon, Lisbon District, Portugal
    Recruiting
  • Hospital Santa Maria / ULS Santa Maria
    Lisbon, Lisbon District, Portugal
    Recruiting
  • Hospital São Francisco Xavier / Centro Hospitalar de Lisboa Ocidental
    Lisbon, Lisbon District, Portugal
    Recruiting
Show 1 more location
  • Hospital de VIla Nova de Gaia-Espinho / ULS Gaia e Espinho
    Vila Nova de Gaia, Porto District, Portugal
    Not yet 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.