Trudell Medical International (Canada)

A Laboratory Investigation of Medication Delivery by Pressurized Metered Dose Inhaler with Valved holding chamber Using a Model Adult Oropharyngeal Airway and Inhalation Flow Profiles from Trained Healthy Adults

Patient inhalation flow-elapsed time profiles using pressurized metered dose inhalers (pMDIs) can be highly variable for several reasons, including inability to maintain a consistent flow rate-time profile. We report a laboratory-based study measuring how inhalation profiles from...