flow (redirected from maximal midexpiratory flow)

flow (flo)

1. the movement of a liquid or gas.

2. the rate at which a fluid passes through an organ or part, expressed as volume per unit of time.

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blood flow 

1. circulation (of the blood).

2. circulation rate.

effective renal blood flow  (ERBF) that portion of the total blood flow through the kidneys that perfuses functional renal tissue such as the glomeruli.

effective renal plasma flow  (ERPF) the amount of plasma that perfuses the renal tubules per unit time, generally measured by the clearance rate of -aminohippurate.

forced expiratory flow  (FEF) the rate of airflow recorded in measurements of forced vital capacity.

maximum expiratory flow  the rate of airflow during a forced vital capacity maneuver, often specified at a given volume.

maximum midexpiratory flow  the average rate of airflow measured between exhaled volumes of 25 and 75 per cent of the vital capacity during a forced exhalation.

peak expiratory flow  (PEF) the greatest rate of airflow that can be achieved during forced exhalation beginning with the lungs fully inflated.

renal plasma flow  (RPF) the amount of plasma that perfuses the kidneys per unit time, approximately 10 per cent greater than the effective renal plasma flow.

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flow (fl)

v.

1. To move or run smoothly with unbroken continuity.

2. To circulate, as the blood in the body.

3. To menstruate.

n.

1. The smooth motion characteristic of fluids.

2. The volume of fluid or gas passing a given point per unit of time.

3. Menstrual discharge.

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flow,

1 the movement of a liquid or gas.

2 copious menstruation but less profuse than flooding.

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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 FEF_200–1200; 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 FEF_25–75; 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.

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flow,

n to move in a manner similar to a liquid stream.

flow, dental material,

n the continued deformation or change in shape under a static load, as with waxes and amalgam.

flow, traffic,

n the pattern of office personnel and patient movement from one area within the office to another.