NR 601 PFT Quiz Latest Version with Verified Solutions

NR 601 PFT Quiz Latest Version with Verified Solutions Expiratory Reserve Volume (ERV) The maximum volume of air exhaled from end expiration. Inspiratory Reserve Volume (IRV) Maximum volume of air inhaled from end inspiration Residual Volume (RV) The volume of air remaining in lungs after maximum exhalation. Tidal Volume (VT or TV) Volume of air inhaled or exhaled during each respiratory cycle Functional Residual capacity (FRC) Volume of air in the lungs at rest end expiration Inspiratory Capacity (IC) Maximum volume of air that can be inhaled from the resting expiratory level Total Lung Capacity (TLC) Volume of air in the lungs at maximum inflation What is the formula for Total Lung Capacity RV (residual vol.) + VC (volume capacity) Vital Capacity (VC) The maximum volume of air exhaled on complete exhaustion after full inspiration. Forced Vital Capacity (FVC) Total of air expelled as rapidly as possible (measurement over time) 1st second Forced Expiratory Volume (FEV1) The volume of air expelled in the first second of FVC (most reproducible and reliable) FEV1/FVC ratio Percentage of maximum inspiration expired in 1 second How do you determine reversibility Performing a pre and post bronchodilator spirometry test is conducted What is a significant response in adults considered Greater than or equal to 12% improvement in FEV1(or FVC) significant response = indicative of asthma What does spirometry measure volume against time GOLD1 (Mild) FEV1 > 80% predicted GOLD2 (Moderate) FEV1 50%-79% predicted GOLD3 (Severe) FEV1 30%-49% predicted GOLD4 (Very Severe) FEV1 <30% predicted What does FEV1/FVC ratio of >70% mean? No Obstruction What does FEV1/FVC ratio of <70% mean? Obstruction What does an equal or greater than 12% post bronchodialator improvement in FEV1/FVC ratio mean? Reversible What does an less than 12% post bronchodialator improvement in FEV1/FVC ratio mean? NonReversible