Identify the pathology from the given flow-volume loop:
AVariable extra thoracic obstruction
BVariable intrathoracic obstruction
CFixed distal airway obstruction
DFixed central airway obstruction
Which of the following is used for the diagnosis of asthma?
AMeasurement of tidal volume
BEnd expiratory flow rate
CTotal lung capacity
DFEV1
In which of the following conditions there is an increase in lung diffusion capacity?
AAlveolar haemorrhage
BPulmonary oedema
CIdiopathic pulmonary fibrosis
DEmphysema
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