Elderly ICU Patients' immune paralysis linked to pneumonia risk
NCT ID NCT07551258
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study watches 170 ICU patients on breathing machines to see if a temporary immune system weakness (called immunoparalysis) raises the chance of getting pneumonia. Researchers will measure immune markers in elderly patients (65+), younger adults, and healthy volunteers. The goal is to understand the link, not to test a treatment.
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Study facts
What this study's own registry entry says, in plain language.
- Participants
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About 170 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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May 2026
An estimate. Start dates often move.
- Expected to finish
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Jul 2028
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
Who is studied
Critically ill adult patients requiring invasive mechanical ventilation for more than 48 hours and admitted to the Intensive Care Unit will be consecutively screened for inclusion. The study will include two patient cohorts (≥65 years and 18-64 years), as well as a cohort of healthy adult volunteers serving as controls.
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * ≥18 years * Mechanical ventilation expected \>48h * Intubation between 24h pre- and 48h post- ICU admission * Informed consent Exclusion Criteria: * Known severe immunosuppression, including primary immunodeficiency disorders, advanced HIV infection (AIDS), active hematological malignancy under treatment, recent chemotherapy or immunosuppressive therapy * High dose steroids at immunosuppressive doses * Active autoimmune disease * Pregnancy * End-of-life situation
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Servei de medicina intensiva, Hospital Universitari de Bellvitge
RECRUITINGL'Hospitalet de Llobregat, Barcelona, 08907, Spain
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Other studies related to the condition(s) this trial covers.
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