Results 1 to 10 of about 73,941 (162)

Proteomic associations with forced expiratory volume: a Mendelian randomisation study [PDF]

open access: yesRespiratory Research, 2023
Background A decline in forced expiratory volume (FEV1) is a hallmark of respiratory diseases that are an important cause of morbidity among the elderly.
Gisli Thor Axelsson   +11 more
doaj   +5 more sources

Diurnal Variation in Peak Expiratory Flow and Forced Expiratory Volume [PDF]

open access: yesJournal of Clinical and Diagnostic Research, 2015
Introduction: Diurnal variability in airways has most commonly been reported using peak expiratory flow (PEF) and forced expiratory volume in one second (FEV1). Characteristics of variability in small, mid and large airways caliber are expected to be
Arun Goel   +4 more
doaj   +4 more sources

Raised-Volume Forced Expiratory Flow-Volume Curve in Healthy Taiwanese Infants [PDF]

open access: yesScientific Reports, 2017
The raised-volume rapid thoracoabdominal compression (RVRTC) manoeuvre has been applied to obtain full forced expiratory flow-volume curves in infants. No reference data are available for Asian populations.
Shen-Hao Lai   +7 more
doaj   +3 more sources

Prediction equations for spirometry in four‐ to six‐year‐old children

open access: yesJornal de Pediatria (Versão em Português), 2016
Objective: To generate prediction equations for spirometry in 4‐ to 6‐year‐old children. Methods: Forced vital capacity, forced expiratory volume in 0.5 s, forced expiratory volume in one second, peak expiratory flow, and forced expiratory flow at 25–75%
Danielle Corrêa França   +9 more
doaj   +5 more sources

Precipitous fall of the forced expiratory volume [PDF]

open access: yesThorax, 1969
Two patients are described who showed a precipitous loss of forced expiratory volume from normal to low levels within a few years. They did not have bronchial asthma and we suggest that this pattern of deterioration may occur occasionally in patients before they attend hospital with the symptoms of chronic bronchitis.
P, Howard, T W, Astin
openaire   +2 more sources

Variability of relaxed expiratory volume and forced inspiratory volume [PDF]

open access: yesThorax, 1970
Measurements of relaxed expiratory volume in one second (REV1·0) and forced inspiratory volume in one second (FIV1·0) were made on 50 subjects on two occasions to know the variability of these procedures in the individual subject. The mean coefficients of variation for REV1·0 and FIV1·0 were 6·74% and 8·92%, respectively.
M K, Tandon, A H, Campbell
openaire   +2 more sources

Impact of climate variability on exercise-induced bronchospasm in adolescents living in a semi-arid region

open access: yesEinstein (São Paulo), 2021
Objective: To examine the impact of climate variability on the occurrence of exercise-induced bronchospasm in the rainy and dry seasons of a Brazilian semi-arid region.
Edinely Michely de Alencar Nelo   +7 more
doaj   +2 more sources

Forced expiratory flow‐volume relationships [PDF]

open access: yesAnaesthesia, 1977
Forced expiratory flow-volume relationships have been used to investigate changes in lung mechanics caused by upper abdominal operations. The slope of the 'effort independent' portion of the flow-volume curve increases after operation, suggesting that restriction of respiratory movement is associated with an increase in lung recoil.
G B, Drummond, N H, Gordon
openaire   +2 more sources

Effect of acute respiratory infections in infancy on pulmonary function test at 3 years of age: a prospective birth cohort study

open access: yesBMJ Open Respiratory Research, 2020
Introduction Acute respiratory infections (ARIs) in infancy may have a long-term impact on the developing respiratory system. We planned a prospective cohort study to determine the impact of ARI during infancy on the pulmonary function test indices at 3 ...
Kana Ram Jat   +7 more
doaj   +1 more source

UTILITY OF SPIROMETRY IN ASSESSMENT OF UPPER AIRWAY OBSTRUCTIONS: THE NEGLECTED PARAMETERS

open access: yesKhyber Medical University Journal, 2023
Upper airway obstructions represent a huge burden to the health care system due to its high morbidity and cost to the economic systems. Therefore, it is important to understand the physiological parameters used in diagnosis and prognosis of these ...
Thamir Al-khlaiwi, Syed Shahid Habib
doaj   +1 more source

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