EXAM PFT STUDY QUESTIONS AND ANSWERS

Spirometry correct answer: Measurement of gas flow Four Lung Volumes correct answer: TV, IRV, ERV, RV Tidal Volume (TV) correct answer: Volume of gas inspired or expired during normal breathing Inspiratory Reserve Volume (IRV) correct answer: the maximum amount of gas that can inspired from the resting inspiratory position Expiratory Reserve Volume (ERV) correct answer: the maximum volume of gas that can be expired from resting expiratory position Residual Volume (RV) correct answer: the volume of gas remaining in lungs following a maximum expiration Difference between Volume & Capacity correct answer: Capacity is made up of two or more volumes FRC correct answer: Recorded l or mL, reported BTPS, Two or more volumes Total lung capacity (TLC) correct answer: amount of gas contained in the lungs at the end of maximum inspiration TLC & RV correct answer: Cannot directly measure (RV is always left behind) Inspiratory Capacity (IC) correct answer: maximum volume of gas that can be inspired from resting expiratory position Functional Residual Capacity (FRC) correct answer: volume of gas remaining in lung at the end of normal expiration Simple Spirometry Tests correct answer: VC & FVC Other Tests correct answer: Peak Expiratory Flow (PEF) Maximal Volunatary Ventilation (MVV) Bronchodilator Studies correct answer: determines reversibility Interpretation correct answer: Normal, Obstruction, Restriction, Combination Slow Vital Capacity (SVC) correct answer: volume of gas measured from a slow complete expiration after a maximal inspiration without forced or rapid effort