Acapella PEP Therapy Vibratory Device Acapella combines the benefits of both PEP therapy and airway vibrations to mobilize pulmonary secretions and can be used in virtually any spatial orientation. Patients are free to sit, stand or recline. It improves clearance of secretions, is easier to tolerate than CPT, takes less than half the time of conventional CPT sessions and facilitates opening of airways in patients with lung diseases with secretory problems (COPD, asthma, Cystic Fibrosis). Color-coded units (green for high-flow, blue for low) help customize treatment based on clinical needs. You can adjust Acapella's frequency and flow resistance simply by turning an adjustment dial.