U.S., Feb. 25 -- ClinicalTrials.gov registry received information related to the study (NCT07428785) titled 'Pulmonary and Total Blood Volume in COPD' on Dec. 01, 2025.

Brief Summary: Background Patients with chronic obstructive lung disease (COPD) suffer from a progressive loss of lung function that leads to poor quality of life, and often invalidity and early death. This is markedly affected by a reduced exercise capacity and dyspnoea, but the underlying mechanisms are unknown. In the present study, we aim to investigate whether this may involve a reduced pulmonary blood volume secondarily to a reduced total blood volume.

Methods Design: Prospective matched comparative study Intervention: None

Outcomes:

The primary outcome is pulmonar...