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Assessing and diagnosing Chronic Obstructive Pulmonary Disease (COPD) involves a detailed approach that includes a comprehensive review of medical history, physical examination, and a variety of diagnostic tests. This thorough evaluation is essential to ensure an accurate diagnosis and guide effective management strategies.
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Chronic Obstructive Pulmonary Disease (COPD) is a long-lasting respiratory condition requiring continuous attention and care. It is a progressive lung disease that leads to breathing challenges due to airflow obstruction. It manifests as persistent respiratory symptoms and restricted airflow resulting from abnormalities in the airways and alveoli, usually due to long-term exposure to harmful particles or gases. COPD mainly consists of two primary conditions: emphysema and chronic bronchitis.
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COPD: Pathogenesis and Clinical Features01:20

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Chronic obstructive pulmonary disease (COPD) is a group of lung conditions that progressively worsen over time, including chronic bronchitis and emphysema. This cluster of diseases collectively leads to a gradual and irreversible decline in lung function over time.
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Chronic Obstructive Pulmonary Disease-II: Pathophysiology01:20

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Chronic Obstructive Pulmonary Disease (COPD) pathophysiology is intricate and multifaceted, involving a complex interplay of physiological processes. Understanding these mechanisms is crucial for effectively managing and treating COPD. Here is an in-depth look at the critical elements in the pathophysiology of COPD:
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Understanding and evaluating diffusion and perfusion is critical in assessing a patient's respiratory and circulatory health. These processes play key roles in maintaining the body's internal environment, ensuring that tissues receive adequate oxygen while waste products are efficiently removed.
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Pulmonary Function Tests (PFTs)
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Video Experimental Relacionado

Updated: Feb 20, 2026

Author Spotlight: Integrating Alveolar-Capillary Reserve Measurements in Exercise Adaptation and Therapeutic Strategies
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Capacidad de difusión pulmonar de óxido nítrico en la enfermedad: una revisión de alcance

Thomas Radtke1,2, Hà Pham-Ngoc3, Thong Hua-Huy3

  • 1Division of Occupational and Environmental Medicine, Epidemiology, Biostatistics and Prevention Institute, University of Zurich, Zurich, Switzerland thomas.radtke@uzh.ch.

European respiratory review : an official journal of the European Respiratory Society
|February 18, 2026
PubMed
Resumen

La capacidad de difusión pulmonar de óxido nítrico en una sola respiración (D_LNO) muestra potencial para detectar cambios pulmonares en diversas enfermedades. Se necesitan estudios más amplios para comprender completamente D_LNO.

Palabras clave:
óxido nítricocapacidad de difusión pulmonarenfermedades pulmonaresrevisión de alcancefisiología pulmonar

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Área de la Ciencia:

  • Fisiología pulmonar; Medicina respiratoria; Técnicas de diagnóstico

Sus antecedentes:

  • La capacidad de difusión pulmonar de óxido nítrico en una sola respiración (D_LNO) es una medida emergente.; Su aplicación en diversas condiciones clínicas requiere un mapeo integral.

Objetivo del estudio:

  • Mapear la investigación existente sobre D_LNO en diversas enfermedades.; Identificar lagunas de investigación en el estudio de D_LNO.

Principales métodos:

  • Se empleó una metodología de revisión de alcance.; Se realizaron búsquedas sistemáticas de literatura en las principales bases de datos (Embase, MEDLINE, PubMed, Scopus, Web of Science, Cochrane Library) de 1983 a 2025.; La extracción y el cribado de datos se realizaron utilizando Rayyan y REDCap.

Principales resultados:

  • 69 estudios cumplieron los criterios de elegibilidad, cubriendo afecciones respiratorias, inmunológicas, post-COVID-19, cardiovasculares y metabólicas.; Se observó una heterogeneidad significativa en el diseño del estudio, tamaños de muestra pequeños (62,3 % <50 participantes) y falta de protocolos registrados.; D_LNO demostró sensibilidad en la detección de cambios intersticiales/fibróticos y, junto con D_LCO, identificó perturbaciones vasculares/hematológicas.

Conclusiones:

  • Las mediciones de D_LNO y D_LCO en una sola respiración ofrecen información sobre la resistencia a la difusión y el estado vascular-hematológico.; Se necesitan estudios más amplios y bien diseñados para establecer interpretaciones claras de D_LNO en diferentes estados de enfermedad.