An open-circuit helium method for measuring functional residual capacity and defective intrapulmonary gas mixing.
D019069:Cell Respiration; D004646:Emphysema; D005652:Functional Residual Capacity; D006371:Helium; D011656:Pulmonary Emphysema / Q000502:physiology*; D012119:Respiration
D006371:Helium
EMPHYSEMA, PULMONARY/physiology; HELIUM; RESPIRATION