Results 21 to 30 of about 18,047 (210)

The Effect of Reduction of Maintenance Treatment on Circadian Variation in Peak Expiratory Flow Rate Values in Asthmatic Children [PDF]

open access: yes, 1988
We investigated in well controlled asthmatic children whether it is possible to predict by measuring daytime forced expiratory volume in one second, the decline in nocturnal peak expiratory flow rate values after withdrawal of maintenance medication ...
van Aalderen, WMC   +7 more
core   +1 more source

Maximum Expiratory Flow Rates in Induced Bronchoconstriction in Man [PDF]

open access: yes, 2020
A B S T R A C T We evaluated changes of maximum expiratory flow-volume (MEFV) curves and of partial expiratory flow-volume (PEFV) curves caused by bronchoconstrictor drugs and dust, and compared these to the reverse changes induced by a bronchodilator ...
A Bouiuys   +3 more
core  

Transit time analysis of the forced expiratory spirogram in growth [PDF]

open access: yes, 1976
In the search for more sensitive indicators of airway obstruction Fish et al. (Am. Rev. Respirat. Diseases 109: 700, 1974) have proposed a transit time analysis of the forced expiratory spirogram.
H. Levison   +3 more
core   +1 more source

Peak expiratory flow rate as a surrogate for forced expiratory volume in 1 second in COPD severity classification in Thailand

open access: yesInternational Journal of Chronic Obstructive Pulmonary Disease, 2015
There are limited studies directly comparing correlation and agreement between peak expiratory flow rate (PEFR) and forced expiratory volume in 1 second (FEV1) for severity classification of COPD. However, clarifying the role of PEFR as a surrogate of COPD severity classification instead of FEV1 is essential in situations and areas where spirometry is ...
Pothirat,Chaicharn   +7 more
openaire   +5 more sources

Comparison of peak expiratory flow rate and forced expiratory volume in one second in histamine challenge studies in children

open access: yesBritish Journal of Diseases of the Chest, 1982
The difficulty in performing FEV1 in young children prompted us to assess whether PEFR could be used to measure the response to inhaled histamine. In 123 children with recurrent respiratory symptoms we found a highly significant correlation (r = 0.83, P less than 0.001) between the percentage fall from base-line of FEV1 and PEFR.
Henry, RL   +3 more
openaire   +3 more sources

Relationship between sRaw0.5 and forced expiratory flow rates as assessed by Spearman's signed rank test. [PDF]

open access: yes, 2013
*Spearman correlation coefficient, data adjusted for age and height.**FEF25–75%/FVC ratio is a crude index of airway size relative to lung size [18].Correlation coefficients are calculated for expiratory flow rates expressed in terms of both absolute and
Ludovic Trinquart (136439)   +6 more
core   +1 more source

Normal values of forced vital capacity (FVC), forced expiratory volume (FEV 1-0), and peak flow rate (PFR) in children. [PDF]

open access: yesArchives of Disease in Childhood, 1968
The normal values in children for the forced vital capacity (FVC), the forced expiratory volume in one second (FEVI.,), and the peak flow rate (PFR) have been determined in a group of 261 healthy schoolchildren. Charts which allow the ready determination of these values have been presented.
Dugdale A.E., Moeri M.
openaire   +4 more sources

Assessment of lung function in partially edentulous patients using spirometry: A cross-sectional study

open access: yesThe Journal of Indian Prosthodontic Society
Aim: This study aimed to evaluate the effect of partially edentulous ()PED condition on lung function through spirometry tests and comparison of airflow rates between dentulous and PED subjects. Settings and Design: The study design was a cross-sectional
Likhitha Ayyagari   +4 more
doaj   +1 more source

Assessment of the lung function status of the goldsmiths working in an unorganized sector of India

open access: yesLung India, 2013
Context: Exposure to various types of fumes and gases are very common in Jewelery industries. No Report is available regarding the effects of those fumes and gases on the respiratory functions of the goldsmiths.
Subhashis Sahu   +2 more
doaj   +1 more source

Functional Magnetic Nerve Stimulation: The development of a method of generation of explosive expiratory flows in the intubated patient through abdominal muscle stimulation. [PDF]

open access: yes, 2012
Functional Magnetic Nerve Stimulation: The development of a method of generation of explosive expiratory flows in the intubated patient through abdominal muscle stimulation.
Turnbull, David
core  

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