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This Concept Map, created with IHMC CmapTools, has information related to: Week 8_Asthma and COPD, no improvement can indicate COPD - emphysema (irreversible), FEF25-75 measures mean force expiratory flow in middle half of force vital capacity. Reflects status of small airways, PEFR (Peak Expiratory Flow Rate) measures max flow rate achieved during forced vital capacity beginning and ending after maximal exhalation following a full inspiration, restrictive lung disease such as pulmonary fibrosis, percentage of total forced exhaled air during first second of exhalation results Less than 50%, restrictive lung disease such as infant respiratory distress syndrome, Total Lung Capacity - Residual Volume results equal to or greater than 80% = Normal, mean force expiratory flow in middle half of force vital capacity. Reflects status of small airways results equal to or greater than 50% = normal, 60-69% can indicate mild obstructive lung diseases, max flow rate achieved during forced vital capacity beginning and ending after maximal exhalation following a full inspiration bronchodilator treatment improvements but not greather than 12%, FEV1 (Forced Expiratory Volume in 1 Second) measures volume of air forcibly exhaled in the first second of exhalation. reflects status of large airways, percentage of total forced exhaled air during first second of exhalation results 50-59%, less than 50% of predicted can indicate severe airway obstruction, percentage of total forced exhaled air during first second of exhalation results equal to or greater than 80% = Normal, obstructive lung diseases bronchodialator treatment improvements of less than 12%, max flow rate achieved during forced vital capacity beginning and ending after maximal exhalation following a full inspiration bronchodilator treatment no improvement, mean force expiratory flow in middle half of force vital capacity. Reflects status of small airways results less than 50% of predicted, less than 80% can indicate restrictive lung disease, Total Lung Capacity - Residual Volume results less than 80%, volume of air forcibly exhaled in the first second of exhalation. reflects status of large airways results less than 80%