Plethysmography is a non-invasive diagnostic method used to measure changes in volume within an organ or the whole body, often used to assess lung function or blood flow in limbs. It provides valuable data for diagnosing conditions like peripheral artery disease or chronic obstructive pulmonary disease by detecting volume changes related to blood flow or air movement.

Plethysmography

Non-invasive diagnostic method

Changes in volume

Diagnostic method

Lung function refers to the ability of the respiratory system to effectively exchange gases, primarily oxygen and carbon dioxide, between the air and the bloodstream. It is commonly assessed using spirometry, which measures parameters like forced vital capacity and forced expiratory volume, providing crucial information for diagnosing and managing respiratory conditions.

Lung Function

Blood flow refers to the movement of blood through the circulatory system, driven by the heart's pumping action and regulated by blood vessel constriction and dilation. It is essential for delivering oxygen and nutrients to tissues and organs while removing waste products, maintaining homeostasis and supporting overall health.

Blood Flow

Peripheral Artery Disease (PAD) is a common circulatory problem where narrowed arteries reduce blood flow to the limbs, often causing leg pain when walking. It is a significant marker of systemic atherosclerosis and is associated with an increased risk of cardiovascular events and mortality.

Peripheral Artery Disease

Chronic obstructive pulmonary disease (COPD) is a progressive lung disease characterized by persistent respiratory symptoms and airflow limitation due to airway and/or alveolar abnormalities, usually caused by significant exposure to noxious particles or gases. Management includes smoking cessation, pharmacotherapy, pulmonary rehabilitation, and, in severe cases, oxygen therapy or surgery to improve quality of life and reduce mortality.

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