Chest physiotherapy is an important adjuvant in the treatmentof most respiratory illnesses (Balachandran 2005) and is usuallyused in ch ildren with chronic respiratory or neuromuscular dis-ease (Gajdos 2010). The central aim of paediatric chest physio-therapy is to assist the clearance of tracheobronchial secretions,thereby to decrease airway resistance, improve gas exchange andmake breathing easier (Gajdos 2010). The techniques combinemanual pe rcussion of the chest wall and strategic positioning of thepatient for mucus drainage with cough and breathing techniques(Balachandran 2005). However, it is necessary to take into consid-eration the peculiarities of the respirator y system of ch ildren. Eventhough the mechanical principles of the tech niques appl ie d to pae-diatric patients are similar to those used in adults, the continuouschanges in respiratory structure and function that occur from birthto adulthood require continuous adaptation in the application ofchest physiotherapy techniques in each age group (Oberwaldner2000). The differences in the respiratory structure and functionof children l imit or contraindicate some of the techniques avail-able for treatment in this age group (Oberwaldner 2000). Despiteimproving the patient’s respirator y status and expediting recov-