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  2. Chronic obstructive pulmonary disease - Wikipedia

    en.wikipedia.org/wiki/Chronic_obstructive...

    Chronic obstructive pulmonary disease (COPD) is a type of progressive lung disease characterized by chronic respiratory symptoms and airflow limitation. [8] GOLD 2024 defined COPD as a heterogeneous lung condition characterized by chronic respiratory symptoms (dyspnea or shortness of breath, cough, sputum production or exacerbations) due to abnormalities of the airways (bronchitis ...

  3. Shortness of breath - Wikipedia

    en.wikipedia.org/wiki/Shortness_of_breath

    Shortness of breath (SOB), known as dyspnea (in AmE) or dyspnoea (in BrE), is an uncomfortable feeling of not being able to breathe well enough. The American Thoracic Society defines it as "a subjective experience of breathing discomfort that consists of qualitatively distinct sensations that vary in intensity", and recommends evaluating dyspnea by assessing the intensity of its distinct ...

  4. Paroxysmal nocturnal dyspnoea - Wikipedia

    en.wikipedia.org/wiki/Paroxysmal_nocturnal_dyspnoea

    The perception of dyspnea is theorized to be a complicated connection between peripheral receptors, neural pathways, and the central nervous system. [ 5 ] Receptors in the chest wall and central airways, as well receptors in the respiratory center of the central nervous system, produce an increased requirement for ventilation which is not ...

  5. Pulmonary edema - Wikipedia

    en.wikipedia.org/wiki/Pulmonary_edema

    These are common presenting symptoms of chronic and cardiogenic pulmonary edema due to left ventricular failure. The development of pulmonary edema may be associated with symptoms and signs of "fluid overload" in the lungs; this is a non-specific term to describe the manifestations of right ventricular failure on the rest of the body.

  6. Emphysema - Wikipedia

    en.wikipedia.org/wiki/Emphysema

    Diagram of alveoli with emphysema. Emphysema is a respiratory disease of the lower respiratory tract. [7] It is commonly caused by tobacco smoking but some people are affected who have never smoked. [14] The presence of emphysema is a clear risk factor for lung cancer, made stronger in those who smoke. [20] Early symptoms of emphysema vary.

  7. Pathophysiology of asthma - Wikipedia

    en.wikipedia.org/wiki/Pathophysiology_of_asthma

    Asthma is a common pulmonary condition defined by chronic inflammation of respiratory tubes, tightening of respiratory smooth muscle, and episodes of bronchoconstriction. [1] The Centers for Disease Control and Prevention estimate that 1 in 11 children and 1 in 12 adults have asthma in the United States of America. [ 1 ]

  8. Ventilation–perfusion coupling - Wikipedia

    en.wikipedia.org/wiki/Ventilation–perfusion...

    Several therapeutic pathways are developed to treat V/Q mismatch. The most common treatments are bronchodilators and oxygen therapy. Bronchodilators improve breathing by relaxing lung muscles or widening the airways. It is usually applied through inhalers and is mostly used to treat asthma and chronic obstructive pulmonary disease. [19]

  9. Respiratory tract - Wikipedia

    en.wikipedia.org/wiki/Respiratory_tract

    It is an inflammation of the bronchial tubes. There are two forms of this infection: acute bronchitis, which is treatable and can go away without treatment, or chronic bronchitis, which comes and goes, but will always affect one's lungs. Bronchitis increases the amount of mucus that is natural in your respiratory tract.