Influence of particle size and patient dosing technique on lung deposition of HFA-beclomethasone from a metered dose inhaler.

Abstract

The objective of this study was to determine the lung delivery of HFA-134a-beclomethasone dipropionate (HFA-BDP) from a breath-activated inhaler (QVAR Autohaler) compared with proper and improper press and breathe (QVAR P&B) metered dose inhaler (MDI) technique. The hypothesis was that that the smaller particles of BDP from HFA-BDP would stay suspended… (More)

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