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.
Quick facts
| Study type | Observational |
|---|---|
| Ages | 18 Years and up |
| Sex | All |
| Enrollment | 7000 (estimated) |
| Sponsor | Lisbon Academic Medical Center - Centro Académico de Medicina de Lisboa Research network |
| Locations | 7 sites (Lisbon, Lisbon District and 6 other locations) |
| Status | Recruiting |
| Started | January 13, 2025 |
| Main results expected | December 31, 2026 |
| Study ends | December 31, 2027 |
| Registry record updated | April 13, 2026 |
| Trial ID | NCT07510776 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
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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
- Principal investigator: Susana Fernandes, MD PhD — Lisbon School of Medicine
- Study coordinator: Susana Fernandes, MD PhD.
- Email: susanamfernandes@medicina.ulisboa.pt
- Phone: 351 21 798 5100
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.