A 150 lb., 62-year-old man has chronic fatigue, productive cough, exertional dyspnea, mild cyanosis, and marked slowing

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A 150 lb., 62-year-old man has chronic fatigue, productivecough, exertional dyspnea, mild cyanosis, and marked slowing offorced expiration. His pulmonary function and laboratory testsfollow:
Frequency
16 breaths/min
Alveolar ventilation
4.2 L/min
Vital capacity (VC)
2.2 L
Functional residual capacity (FRC)
4.0 L
Total lung capacity (TLC)
5.2 L
Maximum inspiratory flow rate
250 L/min
Maximum expiratory flow rate
20 L/min
PaO2
62 mm Hg
PaCO2
Pulmonary function tests after bronchodilatortherapy:
Calculate the tidal volume (TV) for this person before and afterthe bronchodilator therapy. Show your work/calculations.