EVALUATION OF AERODYNAMIC PARTICLE SIZE DISTRIBUTION OF DRUGS USED IN INHALATION THERAPY: A CONCISE REVIEW
Journal: INTERNATIONAL JOURNAL OF RESEARCH -GRANTHAALAYAH (Vol.8, No. 7)Publication Date: 2020-07-31
Authors : Smita Nayak Priyanka Ghugare Bhaskar Vaidhun;
Page : 264-271
Keywords : Metered Dose Inhaler; Dry Powder Inhaler; Inertial Impaction; Anderson Cascade Impactor; Next Generation Impactor; Laser Diffraction; HELOS;
Abstract
Most of the inhalation products in the market use metered dose inhaler (MDI) technology or dry powder inhaler (DPI) technology. MDIs use propellant to deliver desired dose of liquid formulation in aerosol form. DPI contains active in fine particulate form embedded onto an inert carrier. In both cases, amount of drug dispensed from the device reaching the lungs is dependent upon drug product characteristics as well as formulationdevice relationship. Hence, in addition to particle size, aerodynamic distribution of the drug upon delivery by the device plays an important role in determining amount of drug reaching the lungs. Therefore, particle size characterization is an important tool in determining the extent of drug delivery from the metered dose inhaler. Aerodynamic particle size distribution is frequently determined by use of cascade impactors and data so generated is accepted by regulatory agencies as a tool for predicting efficacy of MDIs and DPIs. This review discusses principle and working of cascade impactors. Additionally, the review also examines the role of laser diffraction technique in estimating size of dispersed particles.
Other Latest Articles
- COVID-19, SARS AND BATS CORONAVIRUSES GENOMES PECULIAR HOMOLOGOUS RNA SEQUENCES
- FEMALE AND MALES’ BRAIN TENDENCIES IN LEARNING ENGLISH AS A SECOND LANGUAGE
- IMPACT OF EXTENSION PROGRAM IN ENGLISH COMMUNICATION SKILLS OF OUT-OF-SCHOOL YOUTH (OSY) OF LIFE PROJECT FOR YOUTH (LP4Y)
- SELF-EFFICACY BELIEFS AMONG SCHOOL MATHEMATICS TEACHERS OF NEPAL
- ATTITUDE AND PERCEPTION OF HEALTHCARE PROFESSIONALS IN OGUN STATE TOWARDS THEIR VISUAL HEALTH
Last modified: 2020-08-09 20:14:00