The success of the therapy inhalation (aerosol therapy), depends on the quality that is conducted, with the inhalation technique (TI), probably more important than the characteristics of the administered drug, the inhalation system, the patient's age and his respiratory condition. Also considering the frequent readmissions to the emergency of children with obstructive lower airways, clinically manifested by wheezing, we ask the following question: What is the degree of compliance with the inhalation technique applied by mothers of children under 3 years with recurrent wheezing bronchitis, hospitalized in the hospital emergency at the National Dos de Mayo from March to April 30, 2011?. The degree of compliance with the inhalation technique shake the inhaler applied by mothers of children under 3 years with recurrent Bronchial Obstructive Syndrorne. hospitalized in the emergency, was 90 per cent, 83 per cent meets insert the inhaler in the holding chamber and administered a single puff, 80 per cent to repeat the whole cycle, 70 per cent expect 10 seconds to 10 aspirations of the patient, 67 per cent correctly press the holding chamber, 60 per cent correctly positioning the patient, 53 per cent stir again inhaler, 27 per cent wait 30 to 60 seconds before repeating the cycle, and 23 per cent removes the holding chamber. Inhalation technique applied by the mothers of children under 3 years, diagnosed with recurrent obstructive bronchial syndrome treated in emergency at the National Hospital Dos de Mayo is not effective.