Page 1 of 1: The major lung function tests seek to answer 3 basic questio

tanmay_mehta · Credits: 16721 My Scrapbook My Reading List 3 Books

1. Are the airways narrowed? Use a peak flow meter (PEF) or spirometry.
o Peak flow meters can be issued on prescription and used at home by patients, particularly asthmatics.
o Spirometry gives us FEV1 (forced expiratory volume in 1 second) and FVC (forced vital capacity); these are assessed against predicted values and also combined to give the FEV1:FVC ratio, a measure of airway limitation that can differentiate obstructive from restrictive lung disease.
2. Are the lungs a normal size? Use helium dilution or body plethysmography.
3. Is gas uptake normal? Use diffusing capacity/transfer factor.

tanmay_mehta · Credits: 16721 My Scrapbook My Reading List 3 Books

i think this is animportant topic because atleast one question comes from it every alternate year atleast. table given in harrison is most useful for it

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