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- W3199109747 abstract "This manuscript critically reviews the design and delivery of spray-dried particles for the achievement of high total lung doses (TLD) with a portable dry powder inhaler. We introduce a new metric termed the product density, which is simply the TLD of a drug divided by the volume of the receptacle it is contained within. The product density is given by the product of three terms: the packing density (the mass of powder divided by the volume of the receptacle), the drug loading (the mass of drug divided by the mass of powder), and the aerosol performance (the TLD divided by the mass of drug). This manuscript discusses strategies for maximizing each of these terms. Spray drying at low drying rates with small amounts of a shell-forming excipient (low Peclet number) leads to the formation of higher density particles with high packing densities. This enables ultrahigh TLD (>100 mg of drug) to be achieved from a single receptacle. The emptying of powder from capsules is directly proportional to the mass of powder in the receptacle, requiring an inhaled volume of about 1 L for fill masses between 40 and 50 mg and up to 3.2 L for a fill mass of 150 mg." @default.
- W3199109747 created "2021-09-27" @default.
- W3199109747 creator A5012707989 @default.
- W3199109747 creator A5030770558 @default.
- W3199109747 creator A5089459287 @default.
- W3199109747 date "2021-09-21" @default.
- W3199109747 modified "2023-09-25" @default.
- W3199109747 title "Optimizing Spray-Dried Porous Particles for High Dose Delivery with a Portable Dry Powder Inhaler" @default.
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