PT  - JOURNAL ARTICLE
AU  - Arija, Rocío Reinoso
AU  - de la Espada, Rosario Ruiz-Serrano
AU  - Ollero, Mª Dolores Núñez
AU  - Hernandez, Laura Carrasco
AU  - Gallego, Esther Quintana
AU  - López-Campos, Jose Luis
TI  - Evaluation of the Importance of Capsule Transparency in Dry Powder Inhalation Devices
AID  - 10.1370/afm.3147
DP  - 2024 Sep 01
TA  - The Annals of Family Medicine
PG  - 417--420
VI  - 22
IP  - 5
4099  - http://www.annfammed.org/content/22/5/417.short
4100  - http://www.annfammed.org/content/22/5/417.full
SO  - Ann Fam Med2024 Sep 01; 22
AB  - The aim of this work is to test whether the use of a transparent capsule affects the residual capsule weight after inhalation as a surrogate of the inhaled delivered dose for patients with non-reversible chronic airway disease. Researchers conducted an observational cross-sectional study with patients using a single-dose dry powder inhaler. The weight of the capsule was measured with a precision microbalance before and after inhalation. Ninety-one patients were included, of whom 63 (69.2%) used a transparent capsule. Inhalation with a transparent capsule achieved a weight decrease of 30.1% vs 8.6% for devices with an opaque capsule (P <0.001). These data reinforce the need to provide patients with mechanisms that verify the correct inhalation technique.