Acapella DM Pediatric Vibratory PEP Device with MouthpieceSmiths Medical acapella dm childrens pep mouthpiece is designed to provide and low volume bronchial therapy for children with asthma and other respiratory illnesses. The acapella dm gives children better expel secretions and increase pulmonary efficiency. Plus, treatment can be performed in less than half the time of a conventional CPT session, providing the patient with a more effective respiratory care solution. Features < 15 L min expiratory flow