Objectives Preserved Ratio Impaired Spirometry (PRISm) is a new spirometric entity defined in international guidelines, associated with overall worse outcomes. It remains unclear whether this represents a distinct entity or an early phase of multiple other diseases, such as chronic obstructive pulmonary disease (COPD) and restrictive lung diseases.
There is a notable scarcity of data on PRISm, particularly in Lebanon. This study aimed to evaluate the prevalence of PRISm and COPD, and their associated factors, among individuals aged 40 years and above who underwent spirometry in a single university medical centre between 2022 and 2024.
Setting Outpatient Pulmonary Function Tests Laboratory at a Lebanese university medical centre. Participants All individuals aged 40 years or older who performed spirometry between 2022 and 2024 Methods A retrospective analysis of pulmonary function tests (PFTs) and demographics was performed.
Patients were classified based on the spirometry patterns that are consistent with COPD (forced expiratory volume in the first second (FEV 1 )/forced vital capacity (FVC) 1 /FVC≥0.7 and FEV 1 1 /FVC≥0.7 and FEV 1 ≥80%).
BMJ Open published a clinical update in Research Highlights on 11 Jun 2026.
The item focuses on Prevalence of PRISm and COPD and associated factors in a university medical centre spirometry unit: a cross-sectional analysis.
Review the original article for the full source wording and details.