asthma

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fadel on Jul 18, 2012 Says :

your welcome my dear freind

Khushbu on Jul 16, 2012 Says :

highly informative and a well presented ppt.

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ASTHMA 9/11/2012 PHYSIOLOGY PRESENTATION 1

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OBJECTIVES: To give an introduction about asthma. Signs & symptoms. How to diagnose it?. Bases of treatment. Types of treatments. Ways of prevention. 9/11/2012 PHYSIOLOGY PRESENTATION 2

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INTRODUCTION: Definition: Asthma :is a chronic condition involving the respiratory system in which the airways occasionally constricts, becomes inflamed, and is lined with excessive amounts of mucus, often in response to one or more triggers. 9/11/2012 PHYSIOLOGY PRESENTATION 3

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Pathophysiology

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Triggers: Tobacco smoke. Infections such as colds, flu, or pneumonia . Allergens such as food, pollen, mold, dust mites, and pet dander Exercise . Air pollution and toxins . Weather, especially extreme changes in temperature Drugs (such as aspirin, NSAID, and beta-blockers) Food additives (such as MSG) Emotional stress and anxiety . Singing, laughing, or crying . Smoking, perfumes, or sprays . Acid reflux . 9/11/2012 PHYSIOLOGY PRESENTATION 7

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Some allergens which may cause asthma House-dust mites which live in carpets, mattresses and upholstered furniture Spittle, excrements, hair and fur of domestic animals Plant pollen Pharmacological agents (enzymes, antibiotics, vaccines, serums) Food components (stabilizers, genetically modified products) Dust of book depo-sitories

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Signs & Symptoms: Shortness of breath . Tightness of chest . Excessive coughing or a cough that keeps you awake at night . Feeling very tired or weak when exercising. Wheezing or coughing after exercise . Decreases or changes in lung function as measured on a peak flow meter . Signs of a cold, or allergies (sneezing, runny nose, cough, nasal congestion, sore throat, and headache) . Trouble sleeping . 9/11/2012 PHYSIOLOGY PRESENTATION 9

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Clinical features Symptoms Signs

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Diagnosis of asthma

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Investigation

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Treatment: Bases of treatments: one way is to relaxes the muscles during expiration. 9/11/2012 PHYSIOLOGY PRESENTATION 14

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Drugs used in treatment: Anti-inflammatories reduce the number of inflammatory cells in the airways and prevent blood vessels from leaking fluid into the airway tissues. (Specially leukotriene inhibitors). Corticosteroids. Bronchodilators work by increasing the diameter of the air passages and easing the flow of gases to and from the lungs.(metaproterenol (Alupent, Metaprel), ephedrine, terbutaline , & Atrophine sulfate ). 9/11/2012 PHYSIOLOGY PRESENTATION 17

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Prevention: One method of prevention is to form at least yearly medical exam specially for the major systems. Today, some drugs are used to prevent it: Corticosteroids. Glucocorticoids (Cortisone) because we said that cortisol has a permissive action to catecholeamine which induces VC & BD. Anti- inflammatory drugs (specially anti-histamine). 9/11/2012 PHYSIOLOGY PRESENTATION 18

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Criteria for hospital admission Despite high dose of inhaled bronchodilator, they: Investigation

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	nursefadel 10 Months ago.



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