500 patient records to unlock pneumonia secrets

NCT ID NCT07574866

Knowledge-focused Sponsor: Zhonghao Fang Source: ClinicalTrials.gov ↗

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study looks back at the medical records of 500 adults hospitalized with pneumonia to learn more about the disease. Researchers want to understand what factors affect patient outcomes, such as age, other health conditions, and lab results. The goal is to improve how pneumonia is diagnosed and treated in the future.

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Study facts

What this study's own registry entry says, in plain language.

Participants

About 500 people

The number the study aims to enrol. It can still change while the study runs.

Expected to start

Apr 2026

An estimate. Start dates often move.

Expected to finish

Dec 2026

An estimate. End dates often move.

Lead sponsor

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

From April 2023 to April 2026, all adult patients who were hospitalized due to pneumonia and met the diagnostic criteria

Ages

18 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show 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: 1. Age ≥ 18 years old; 2. Meet the diagnostic criteria for pneumonia (acute onset + new infiltrates on imaging); 3. Have a positive result from pathogen testing; 4. Time from onset to admission ≤ 72 hours (to ensure being in the acute phase of the disease); 5. Sign a written informed consent form. Inclusion criteria for the severe group: A diagnosis of "severe pneumonia" can be made if one of the main criteria or ≥ 3 of the secondary criteria are met. Main criteria: ① Tracheal intubation requiring mechanical ventilation ② Need for vasoactive drugs after active fluid resuscitation for septic shock Secondary criteria: * Respiratory rate ≥ 30 breaths/min * PaO₂/FiO₂ ≤ 250 mm Hg * Multiple lobe infiltrates * Confusion and/or disorientation ⑤ Blood urea nitrogen ≥ 20 mg/dL ⑥ Leukopenia (WBC \< 4×10⁹/L) * Thrombocytopenia (PLT \< 100×10⁹/L) * Decreased body temperature (central body temperature \< 36 ℃) ⑨ Hypotension requiring fluid resuscitation Exclusion Criteria: * 1\) Patients with severely lacking medical records; 2\) Those whose main manifestations are other non-infectious diseases (such as pulmonary edema, lung cancer, pulmonary embolism, etc.); 3) Those whose main diagnosis is active pulmonary tuberculosis, non-infectious interstitial lung disease, etc.; 4) Patients considered not applicable by the researchers.

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Conditions

The condition(s) this trial relates to.

pneumonia

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Pneumonia

How to take part

Only the study team decides who joins. These are the ways to reach them.

The places running it

1 site. The list below names each one and where it is.
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.

500 patient records to unlock pneumonia secrets

What the study statuses mean