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Flow Volume Loops - Common Patterns A. Normal B. Emphysema C. Unilateral Main Stem Bronchial Obstruction D. Fixed Upper Airway Obstruction (UAO) E. Variable Extrathoracic UAO F. Variable Intrathoracic UAO G. Restrictive Parenchymal Lung Disease H. Neuromuscular Weakness #Diagnosis #PFTs #Spirometry #FlowVolume #Loops #Patterns #pulmonary