The relation between symptoms and maximal expiratory flow-volume curves (MEFVC)

Maximal expiratory flow volume values evaluation among female quartz grinders

used test for serial distribution of airway obstruction [2] and in Background: A recent review in silica dust exposed diagnosing chronic obstructive workers focused on airway obstruction and the variables disease in surveys of air pollution used were forced vital capacity (FVC), FEV1 and FEV1%. etc. Tests of peak flow (PEF), MEFR Original Article Nellore Mohan Rao, Ramnath Takiar, Yashwant K. S...

Intrasubject variability of maximal expiratory flow volume curve.

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...

Volume adjustment of maximal expiratory flow rates of flow-volume loops.

Partial and maximal expiratory flow-volume curves in normal and asthmatic subjects before and after inhalation of metaproterenol.

The effects of deep inspiration upon expiratory flow rates and response to inhaled metaproterenol were studied in normal and asthmatic subjects using partial (PEFV) and maximal (MEFV) expiratory flow volume curves. Routine pulmonary function tests and specific conductance were also measured. Prior to administration of metaproterenol, 18 of 24 normal subjects and 11 of 24 asthmatic subjects (p 0...

Effects 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...