A respiratory therapist is reviewing the chart of a 60 y/o p…
A respiratory therapist is reviewing the chart of a 60 y/o patient who weighs 73 kg (161 lb.), is 178 cm (5 ft. 10 in.), and has moderate dyspnea. The chest radiograph report indicates the patient has flattened diaphragms, severe hyperinflation, and a small cardiothoracic ratio. Pulmonary function tests results are as follows:FVC 2.45 LFEV1/FVC 48%FEF 25-75% 1.25 L/secFRC by helium dilution 3.75 LDLCO 12 ml/min/mm Hg Which of the following results should the therapist review to further evaluate the extent of air trapping?
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