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What is A drug is to be delivered by a nebuliser. The size of a droplet for its humidification is : and explain in detail?
Answer is A (< 5 m): 'Paicles of size < 2.5 mm can he carried to the lower airways. 'Paicles with size above 10-15 mm in diameter, because of their settling velocities in air, do not penetrate beyond the upper airways' 'Paicle of size 2.5-10 mm deposit relatively high in the tracheobronchial tree.' 'Paicles of size < 2.5 mm can be carried to the lower airways.'