CHEST COPD Immersion Program June 6-7, 2023-Prevalence and factors associated with suboptimal peak inspiratory flow rates in COPD

Prevalence and factors associated with suboptimal peak inspiratory flow rates in COPD

Pdf Summary

This study aimed to determine the prevalence of suboptimal peak inspiratory flow rates (PIFR) and associated factors in a stable COPD population. The study included 66 outpatients with COPD and measured PIFR using the In-Check™ Dial with the resistance settings of participants' prescribed inhalers. The results showed that 40% of COPD participants were discordant with their prescribed inhalers, indicating that many COPD patients do not generate adequate inspiratory force to overcome the resistance of DPIs. Female gender was the only factor consistently associated with lower PIFR. Shorter height was associated with reduced PIFR for low-medium resistance DPIs but not for high resistance DPIs. There was no correlation between PIFR measured by In-Check™ Dial and PIFR measured by standard spirometry. The study concluded that PIFR is reduced in stable COPD patients, with female gender being the only consistently associated factor. Discordance with prescribed inhalers was observed in 40% of COPD patients, suggesting that many COPD patients do not generate adequate inspiratory force to overcome the resistance of DPIs during normal use.

Keywords

prevalence

suboptimal peak inspiratory flow rates

PIFR

COPD

outpatients

In-Check™ Dial

prescribed inhalers

discordant

adequate inspiratory force

female gender

Chronic Obstructive Pulmonary Disease