IMG_0001_NEW_0020

IMG_0001_NEW_0020 - Problems with pulmonary function noflns...

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Alveolar ventilation (Va)- the volume of air thatreaches the alveoli per minute. This value is very important because this is the only air that participates in gas exchange with the blood. Upper vs lower case Va:(VrxFn)-ffpXFp) : 500 mL X 12 - 150 mLXl2 6000 mL - 1800 mL 4200 mL/min. Most volumes and capacities decrease when a person lies down and increase when standing. Reasons: 1. Abdominal coptents push up against diaphragm thffu 2. There is [email protected]! in in rupulmonary blood volume)n the horizontal position that Qecreases the space available for pulrnona+' air.l IV. Puh4onary Disorders 1lr\t 4i,,v; Pulmonary function test norms are usually based on sex. age. and height. It is important to know the size and make-up of the population used to construct the norms.
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Unformatted text preview: Problems with pulmonary function noflns:- don't consider the "size" of the subject, particularl-v the chest size- would be better to use sitting height rather than standin_e height Chronic pulmonary dysfunctions can be divided into two categories:.' l. Obstructive disorders ti'l ' . .., . -:.--: r. t Q1."- blockage or narrowing of the airways causing increased airway rbsistance - aXthma, _ bronchrtrs, emphysema. "tb\\ !i'i:!';:i)' " Sionchiolar obstruction can result Aom (nflammatio$andQdema)sfooth muscle i :'];-Very difficult to move air rapidly in and out of lungs --> decreased FEV1.g. FEV1.g/VC much less than 80 yo, decreased MBC...
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