Volume adjustment of maximal expiratory flow rates of flow-volume loops.
نویسندگان
چکیده
منابع مشابه
Maximal expiratory flow-volume loop in a southern Indian college sportsmen.
Flow volume loops using computerised pulmonary function testing equipment were analysed in twenty sportsmen of Loyola College, Madras. There was no significant difference in mean P.E.F.R. (P greater than 0.2) and VE 25% (P greater than 0.2) in sportsmen, compared to Indian or American normals. On the other hand, the mean VE 50% (P less than 0.05) and VE 75% (P less than 0.001) were significantl...
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1. Forced exhalations performed from volumes below total lung capacity, so-called partial expiratory flow-volume curves, are suggested to be more sensitive in detecting airways bronchoconstriction than maximal expiratory flow-volume curves begun at total lung capacity. 2. In eight healthy men both maximal and partial expiratory flow-volume curves were measured where breath was held at total lun...
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Analysis of airflow in the terminal portion of the maximal expiratory flow volume curve has been suggested as a useful test for the early diagnosis of chronic airways obstruction. Whether such an analysis can identify early disease, and whether any subsequent action can prevent the progress of chronic airways obstruction, is unknown and will require prospective studies. As a precursor of such a...
متن کاملEffects of lung volume and thoracic gas compression on maximal and partial flow-volume curves.
Comparing isovolume flows, measured at the mouth during forced expiratory manoeuvres as started from maximal or partial lung inflation, is a means of assessing the effects of deep inhalation on airway calibre. The aim of this study was to investigate whether the assessment of the effect of deep inhalation during induced bronchoconstriction is influenced by the lung volume at which it is determi...
متن کاملLung growth of pre-adolescent children.
Lung growth was studied in 420 Dutch children aged 6-11 yrs. Forced vital capacity (FVC), forced expiratory volume in one second (FEV1), peak expiratory flow (PEF) and maximal mid-expiratory flow (MMEF) were measured four times over a 2.5 yr period with a rolling-seal spirometer. In boys, pulmonary function increased with approximately the same velocity at all ages studied. In girls, however, t...
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عنوان ژورنال:
- Chest
دوره 102 5 شماره
صفحات -
تاریخ انتشار 1992