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Many gases have toxic properties, which are often assessed using the LC 50 (median lethal concentration) measure. In the United States, many of these gases have been assigned an NFPA 704 health rating of 4 (may be fatal) or 3 (may cause serious or permanent injury), and/or exposure limits (TLV, TWA/PEL, STEL, or REL) determined by the ACGIH professional association.
Many different conditions can lead to the feeling of dyspnea (shortness of breath). DiagnosisPro, an online medical expert system, listed 497 in October 2010. [1] The most common cardiovascular causes are acute myocardial infarction and congestive heart failure while common pulmonary causes include: chronic obstructive pulmonary disease, asthma, pneumothorax, and pneumonia.
Respiratory diseases, or lung diseases, [1] are pathological conditions affecting the organs and tissues that make gas exchange difficult in air-breathing animals. They include conditions of the respiratory tract including the trachea , bronchi , bronchioles , alveoli , pleurae , pleural cavity , the nerves and muscles of respiration .
The biggest concerns about pulmonary fibrosis and the increase of respiratory follow-up after COVID-19 are expected to be solved in the near future. Older age with decreased lung function and/or preexisting comorbidities, such as diabetes, cardiovascular disease, hypertension, and obesity increase the risk of developing fibrotic lung ...
English: Respiratory abnormalities -- Breathing abnormal patterns that can help diagnose or discover the underlying cause of pathological breathing. 4 graphs resembling: Normal breathing, Cheyne-Stokes respiration, Biot's respiration and Kussmaul breathing
Heliox is a breathing gas mixture of helium (He) and oxygen (O 2).It is used as a medical treatment for patients with difficulty breathing because this mixture generates less resistance than atmospheric air when passing through the airways of the lungs, and thus requires less effort by a patient to breathe in and out of the lungs.
Middle East respiratory syndrome: MFS Marfan syndrome: MI Myocardial infarction: MID Multi-infarct dementia: MIS Multisystem Inflammatory Syndrome MIS-A Multisystem Inflammatory Syndrome in adults MIS-C Multisystem Inflammatory Syndrome in children MJD Machado-Joseph disease: ML mucolipidoses: MLD Metachromatic leukodystrophy: MMA Monomelic ...
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 ...