Reflex bronchoconstriction is most likely to occur with the following form of inhaled antiasthma medication
Dry powder inhalers are poable devices in which the capsule (rotacap) containing the drug is punctured/cut across and the powder is aerosolized by the inspiratory air flow of the patient. It requires high velocity inspiration which children, elderly and the very sick may not be capable of. Complications The dry powder is also more likely to irritate the air passage producing cough and bronchoconstriction. Ref:- kd tripathi;pg num :-232
Metered dose spray of drug in solution
Dry powder rotacap
Nebuliser
Nebuliser with spacer
Respiratory system