FEF
The forced mid-expiratory flow (FEF 25-75%) value is a potentially sensitive marker of obstructive peripheral airflow. We aimed to assess whether FEF 25-75% can be an early predictor of …
An Approach to Interpreting Spirometry - AAFP
Mar 1, 2004 · The mid-expiratory flow rate (FEF 25–75%) is the average forced expiratory flow rate over the middle 50 percent of the FVC. It can help in the diagnosis of an obstructive …
Pulmonary Function Tests (PFTs) - EMCrit Project
Mar 6, 2024 · FEF 25-75 is the flow rate between 25-75% of the FVC. FEF 25-75 may be more sensitive for obstruction than FEV1/FVC, but less specific. ATS/ERS 2022 guidelines state …
FEF
FEF 25-75 % represented small airway function and was more sensitive at reflecting airway hyperresponsiveness, inflammation, and disease severity as compared with FEV 1 % in …
Forced Expiratory Flow at 25%-75% Links COPD Physiology to …
A lower %predFEF 25-75% remained significantly associated with increased emphysema, functional small airways disease, TLC, and BDR after adjustment for FEV 1 or forced vital …
Airflow, Lung Volumes, and Flow-Volume Loop
FEF 25–75% = forced expiratory flow during expiration of 25 to 75% of the FVC; FEV 1 = forced expiratory volume in the first second of forced vital capacity maneuver; FVC = forced vital …
A Low Forced Expiratory Flow of 25% to 75% May Indicate Early …
Dec 19, 2022 · Forced expiratory flow between 25% and 75% of vital capacity (FEF 25-75) is likely to identify patients with early evidence of pathologic lung damage in need of careful …
Forced Expiratory Flow at 25–75% as a Marker for Airway Hyper ...
The aim of the present study was threefold: to assess the association between baseline FEF 25-75 and Airway Hyper-responsiveness (AHR), to specify whether a decrease in FEF 25-75 may …
The Association of FEF
Forced expiratory flow at 25% to 75% of forced vital capacity (FEF 25-75) percent predicted is regarded as a more sensitive measure of small airway obstruction.
FEF
Nov 12, 2020 · In this study, to reduce the variability of FEF 25-75%, we analyzed the z-score by calibrating the age, sex, height, and race of each patient. The predictability and HR of FEF 25 …