Bronchial Asthma Pathophysiology and management Dr Deepak Aggarwal MD, FCCP Asst. Professor Pulmonary medicine What is Asthma…..Definition ( GINA) • Asthma is – A chronic inflammatory disorder of the airways in which many cells and cellular elements play a role. – The chronic inflammation is associated with airway hyper‐responsiveness that leads to recurrent episodes of wheezing , breathlessness, chest tightness and coughing particularly at night or early morning. – These episodes are usually associated with widespread, but variable airflow obstruction within the lung that is often reversible either spontaneously or with treatment Causes/ Risk factors ENVIRONMENTAL RISK GENETIC SUSCEPTIBILITY AND FACTORS GENE‐ENVIRONMENT INTERACTIONS Perinatal Factors Indoor and Outdoor Allergens Smoking and Environmental Tobacco Smoke Other Pollutants Race/Ethnicity and Socioeconomic Status Obesity Respiratory Illnesses How Asthma develops….. PATHOGENESIS PATHOGENESIS ASTHMA ‐ PATHOPHYSIOLOGY Asthma Inflammation underlies disease Genetic predisposition processes Intrinsic vulnerability Clinical symptoms also vary by Atopy/allergy Phenotype varies by individual individual and over time and over time PATHOLOGY Asthma: Pathological changes
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