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Etiology of cough
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Etiology of cough

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clinical approach to a patient with chest pain

clinical approach to a patient with chest pain

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  • 1. ETIOLOGYOF COUGH
  • 2. CAUSES Respiratory CauseCOUGH Non-respiratory Cause
  • 3. RESPIRATORY CAUSE Airway irritation Aspirated material Inflammation Infiltration Constriction of airway Parenchymal lung diseases - Interstitial Lung Disease, Pneumonia, Lung abscess Drugs- ACE inhibitor, beta blockers, NSAID
  • 4. AIRWAY IRRITANTS EXOGENOUS Smoke, dust, fumes, foreign bodies ENDOGENOUS Upper airway secretions, gastric contents
  • 5. INFLAMMATION Airway infection viral or bacterial Bronchitis, bronchiectasis Asthma, cough variant asthmaINFILTRATION Bronchogenic carcinoma Infiltration with granulomas- endobronchial sarcoidosis, TB
  • 6. BASED ON DURATION ACUTE (<3 Weeks) COUGH CHRONIC (>3 Weeks)
  • 7. ACUTE URTI, common cold, inhaled foreign body, inhalation of irritant dust or fumes Pneumonia, pulmonary embolism, CCF, bacterial sinusitis
  • 8. CHRONIC GERD Asthma Post nasal drip COPD Bronchogenic carcinoma TB ILD ACE inhibitor
  • 9. ORIGIN Pharynx – post nasal drip Larynx – laryngitis, tumor, whooping cough Trachea – tracheitis Bronchi – bronchitis, COPD, asthma, bronchogenic CA Lung parenchyma – TB, pneumonia, bronchiectasis, pulmonary edema, interstitial fibrosis
  • 10. NON-RESPIRATORY CAUSES PRESSURE ON TRACHEA OR BRONCHUS Aorticaneurysm, cardiomegaly, mediastinaltumor, lymph node CVS – pulmonary edema, mitral stenosis GIT – GERD Reflex causes – foreign body Psychogenic causes