FEF


Also found in: Dictionary, Thesaurus, Legal, Financial, Acronyms, Encyclopedia, Wikipedia.

flow

 [flo]
1. the movement of a liquid or gas.
2. the amount of a fluid that passes through an organ or part in a specified time; called also flow rate.
forced expiratory flow (FEF) the rate of airflow recorded in measurements of forced vital capacity, usually calculated as an average flow over a given portion of the expiratory curve; the portion between 25 and 75 per cent of forced vital capacity is called the maximal midexpiratory flow. Called also forced expiratory flow rate.
laminar flow smooth, uninterrupted flow as of a gas through a tube.
maximal expiratory flow FEF200–1200; the rate of airflow at forced vital capacity, represented graphically as the slope of the line connecting the points 200 mL and 1200 mL on the forced expiratory volume curve. See also pulmonary function tests. Called also maximal expiratory flow rate.
maximal midexpiratory flow FEF25–75; the maximum rate of airflow measured between expired volumes of 25 and 75 per cent of the vital capacity during a forced expiration; represented graphically as the slope of the line connecting the points on the forced expiratory volume curve at 25 and 75 per cent of the forced vital capacity. See also pulmonary function tests. Called also maximal midexpiratory flow rate.
renal plasma flow (RPF) the amount of plasma that perfuses the kidneys per unit time, approximately 90 per cent of the total constitutes the effective renal plasma flow, the portion that perfuses functional renal tissue such as the glomeruli.
turbulent flow flow that is agitated or haphazard.

FEF

Abbreviation for forced expiratory flow.

FEF

forced expiratory flow.

FEF

abbreviation for forced expiratory flow.

FEF

Abbreviation for forced expiratory flow.

FEF

forced expiratory flow rate.
References in periodicals archive ?
Correlation of BMI with PFT shows a significant negative correlation of BMI with flow rates [FEF 25-75%, FEF 75%, PEF, and MVV] of the pulmonary function test.
We also strongly back the reduction in the corporate income taxes, which will promote and attract more investments and facilitate job creation, the FEF said.
Compression set testing in SF 105G oil is illustrated in figure 11, and clearly shows that after 1,008 hours at 150[degrees]C, the DA FEF 1 (optimized compound) is virtually identical to the AEM IP stock.
The effect of frequency (1-1000 Hz) on the low-temperature tan [delta] peak for FEF compounds is shown in Fig.
The FEF will be equipped and organized to provide these critical capabilities.
Revenue generated from tax reform is also urgent as the government faces new spending mandated by Congress such as free tuition in state universities and colleges, free irrigation, and increases in social pension benefits,' FEF said.
He said the staff of FEF colleges would be adjusted against the vacant posts but on need basis in the government colleges, adding that there new colleges are being set up in all the districts and FEF staff would also be appointed in these colleges.
More than 270 teachers who moved back to their hometowns in Bara tehsil of Khyber Agency were trained so that they could help bringing distressed children to normal life in private schools, said an official of FEF last day.
JCW secured 50 points in athletes and won the athletic trophy, followed by FEF Nahazir with 32 points and Post Graduate Deptt.
The FEF/AFS Distinguished Professor Award was presented to FEF Key Professor Paul Sanders, Michigan Technological University, Houghton, Mich.
On assessing the relationship between duration of diabetes with lung function, a significant negative correlation was found between the duration of diabetes and mean FEF 25-75% suggesting impairment of lung function with prolonged illness.
By opening communication with FEF, Boehler says he was able to share his needs and in turn learn what the carrier needed him to do to help speed their operational processes--simple as pie.