Rapid and Deep versus Normal Breathing in Salbutamol Inhalation Effectiveness; a Letter to Editor

Metered dose Inhalers (MDIs) are widely used in the management of patients with asthma and choronoc obstractyive polmunary disease (COPD). Studies comparing the efficacy of inhalers versus nebulizers have shown no significant difference (1, 2). Good inhaler technique is essential to improve patient compliance and control of symptom, and diminish side effects. The usual technique is to use 5 tidal breaths. The Global Initiative for Asthma guidelines suggest that patients can take a slow and single breath to inhale the drug or do tidal breathing. The total lung deposition of an inhaled treatment is strongly affected by the speed of inhalation.