A comparison of manual and automated methods of measuring airway resistance and thoracic gas volume.
AUTOR(ES)
Lord, P W
RESUMO
An automated method of measuring airways resistance (Raw) and thoracic gas volume (Vtg) by whole body plethysmography using a digital computer is described. The results obtained by this method are compared with those obtained by an experienced observer and the results of consistency tests on the two methods are given. There was wide variability in the values of Raw obtained using each method, and no significant differences were found between the two methods. The values of Vtg obtained by them were highly correlated, but the results obtained manually were higher than those obtained automatically by an amount proportional to the volume. The consistency of the computer measurements was shown to be greater than that of the manual method. A significant decrease between successive measurements of Raw in some subjects was noted in the manual observations but not in those derived from the automated method. The new method is suitable for the rapid determination of Raw and Vtg.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=470526Documentos Relacionados
- Variation between observers in the estimation of airway resistance and thoracic gas volume.
- A comparison of pathological methods of measuring lung cancer volume.
- A RAPID PLETHYSMOGRAPHIC METHOD FOR MEASURING THORACIC GAS VOLUME: A COMPARISON WITH A NITROGEN WASHOUT METHOD FOR MEASURING FUNCTIONAL RESIDUAL CAPACITY IN NORMAL SUBJECTS 1
- Manual and automated methods for measuring urea based on a modification of its reaction with diacetyl monoxime and thiosemicarbazide.
- Comparison of Automated and Manual Nucleic Acid Extraction Methods for Detection of Enterovirus RNA