Plasma D-dimer and severity in adult community-acquired pneumonia

Association Between Elevated Plasma D-dimer in Adult Community-acquired Pneumonia Patients and Severity of Inflammatory Response and Survival

Observational Ain Shams University · NCT07199530

This project will see if higher blood D-dimer levels are linked to stronger inflammation and worse survival in adults with community-acquired pneumonia.

Quick facts

Study typeObservational
Enrollment50 (estimated)
Ages18 Years and up
SexAll
SponsorAin Shams University Academic / other
Locations1 site (Cairo)
Trial IDNCT07199530 on ClinicalTrials.gov

What this trial studies

This observational study will enroll at least 50 adults with community-acquired pneumonia seen or admitted to Ain Shams University Hospitals in Cairo. Investigators will collect blood for plasma D-dimer and routine labs (white blood cell count, CRP), obtain chest x-rays, and calculate CURB-65 severity scores. The analysis will examine relationships between D-dimer levels, markers of inflammatory response, clinical severity scores, and survival. Patients with coagulation disorders, active cancer, other chronic diseases, or signs of COVID-19 will be excluded and no experimental treatments are administered.

Who should consider this trial

Good fit: Adults aged 18 or older with clinically and radiologically confirmed community-acquired pneumonia seen or admitted to Ain Shams University Hospitals who do not have signs of COVID-19 and consent to blood sampling are ideal candidates.

Not a fit: Patients with known coagulation disorders, active cancer, other chronic diseases, or clinical or radiologic signs of COVID-19 are excluded and thus unlikely to benefit from this study's findings.

Why it matters

Potential benefit: If successful, measuring D-dimer could help clinicians estimate illness severity and survival risk in CAP and inform treatment decisions.

How similar studies have performed: Previous studies have often reported that higher D-dimer levels correlate with worse outcomes in pneumonia, so this approach has supporting evidence though findings are not entirely consistent.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Patients who will be admitted to the Chest department, or coming to the outpatient clinic at Ain-Shams University Hospitals with CAP, and have the following inclusions:

  1. age ≥18 years
  2. diagnosis of CAP based on clinical symptoms, laboratory findings, and radiological evidence.

Exclusion Criteria:

* Patients with a history of coagulation disorders, cancer, or other chronic diseases, or refusal to participate.
* patients who have any clinical or radiological signs suggesting COVID-19 pneumonia.

Where this trial is running

Cairo

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions D-dimer
Last reviewed 2026-06-13 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.