1. LOCALIZATION OF DISEASE - Use history and physical examination to characterize upper vs. lower, airway vs. parenchymal vs. pleural, heart vs. lung, 2. RESPIRATORY DIAGNOSTICS - General: lab work and serology, pulse oximetry, arterial blood gas analysis, ECG?. - Imaging: radiography, fluoroscopy, US and CT, transoral and transtracheal wash, respiratory endoscopy, thoracocentesis, FNA and lung biopsy, scintigraphy. - Sample analysis: nasal/airway/fluid cytology and culture. 3. RESPIRATORY THERAPEUTICS - Specific drugs: antibiotics, antifungals, glucocorticoids, bronchodilators, mucolytics. - Routes of therapy: parenteral vs. enteral, nebulization, metered dose inhalers. - Adjunct therapy: coupage, nutritional management, oxygen administration, indications for ventilatory support, chest tube placement. - Disease sections below to include brief history and physical exam features specific for each disorder, relevant pathophysiology, specific diagnostic findings, treatment, prognosis.. 4. NASAL DISORDERS - Structural: stenotic nares and brachycephalic syndrome, nasal foreign body, tooth root abscess, nasopharyngeal stenosis. - Infectious: Cryptococcosis, aspergillosis. - Inflammatory: nasopharyngeal polyps, CRS, LPR. - Neoplastic. 5. DISEASES OF AIRWAYS - Structural: laryngeal paralysis, tracheal collapse, bronchiectasis. - Infectious: canine upper respiratory disease complex (expand to include Bordetella and Mycoplasma bronchitis), parasitic bronchitis. - Inflammatory: chronic bronchitis, feline asthma/bronchitis. - Neoplastic. 6. PARENCHYMAL DISEASE - Structural: ciliary dyskinesia, lung lobe torsion. - Infectious: pneumonia (bacterial, fungal, viral, rickettsial, protozoal). - Inflammatory: eosinophilic bronchopneumopathy, aspiration pneumonia, pulmonary fibrosis. - Neoplastic. 7. PLEURAL AND MEDIASTINAL DISEASE - Structural: pneumothorax, diaphragmatic hernia. - Infectious: pyothorax, FIP. - Neoplastic. - Miscellaneous: hemothorax, chylothorax. 8. VASCULAR DISORDERS pulmonary thromboembolism, heartworm disease, pulmonary hypertension