Browsing by Subject "Reference values"
Now showing items 1-4 of 4
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(1996)Background: 25-hydroxyvitamin D has a longer half life and its serum levels have less daily variations than calcitriol. Thus, its measurement is a better indicator of vitamin D status. Aim: To measure 25-hydroxyvitamin D ...
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(2012)Background: The 6-minutes walking test (6WT) is the ideal submaximal test for the evaluation and follow-up of patients with chronic respiratory diseases. There are no reference values (RV) for Chilean children using the ...
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(Daedalus Enterprises Inc., 2016)BACKGROUND: The lung diffusion capacity (DLCO) determined by the single-breath technique greatly helps in the differential diagnosis and classification of severity of common lung diseases. However, widespread use of ...
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(Public Library Science, 2021)Background and purpose Sniff nasal inspiratory pressure (SNIP) is a voluntary inspiratory maneuver measured through a plug occluding one nostril. The investigation of the number of maneuvers necessary to reach the highest ...