RT Journal Article
SR Electronic
T1 Evaluation of the Importance of Capsule Transparency in Dry Powder Inhalation Devices
JF The Annals of Family Medicine
JO Ann Fam Med
FD American Academy of Family Physicians
SP 417
OP 420
DO 10.1370/afm.3147
VO 22
IS 5
A1 Arija, Rocío Reinoso
A1 de la Espada, Rosario Ruiz-Serrano
A1 Ollero, Mª Dolores Núñez
A1 Hernandez, Laura Carrasco
A1 Gallego, Esther Quintana
A1 López-Campos, Jose Luis
YR 2024
UL http://www.annfammed.org/content/22/5/417.abstract
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.