+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Effects of age and posture on the pulmonary volumes assessed by means of the helium intrapulmonary dilution method



Effects of age and posture on the pulmonary volumes assessed by means of the helium intrapulmonary dilution method



Giornale Italiano delle Malattie del Torace 41(4): 197-202



In this work, Authors studied the ventilatory feature of healthy subjects, shared in two age-groups that's: A-group = young men and B-group = aged ones. By mean the Helium dilution method they were examined in two different postures: that standing and squatting one. This protocol was chosen in order to clarify the role of the thoraco-diaphragmatic structures in respiratory decay due to the progressing age. In accordance with the aims of that choice were found, between those two positions, significant volumetric differences markedly in aged subjects; especially with regard to Total Pulmonary Capacity the air volumes decrease in squatting posture; moreover it was possible to verify the proportionally of the volumetric differences, between the two postures, with the increasing age. These results would indicate a certain compliance loss of the diaphragm, due to the age, which limits, in those 2 different positions, its capacity of ventilatory adjustment.

Please choose payment method:






(PDF emailed within 1 workday: $29.90)

Accession: 005288735

Download citation: RISBibTeXText


Related references

Effects of age on the pulmonary volumes comparative evaluation between the plethysmographic method and the helium dilution in healthy subjects. Giornale Italiano delle Malattie del Torace 41(1): 39-47, 1987

Static lung volumes in healthy subjects assessed by helium dilution during occlusion of one mainstem bronchus. Thorax 48(4): 381-384, 1993

The effects of posture, breathing pressure, and immersion in water on lung volumes and intrapulmonary pressures. Amrl-Tr. Aerospace Medical Research Laboratories: 1-38, 1967

Can the single-breath helium dilution method predict lung volumes as measured by whole-body plethysmography?. Jornal Brasileiro de Pneumologia 39(6): 675-685, 2014

Determination of the functional residual volume by means of the helium dilution method. Scandinavian Journal of Clinical and Laboratory Investigation 6(2): 131-136, 1954

Value and significance of intrapulmonary dilution curve of helium, as a qualitative test of alveolar ventilation. Bollettino Della Societa Italiana di Biologia Sperimentale 33(4): 412-414, 1957

Helium dilution studies of lung volumes. Medical Journal of Malaya 24(2): 138-144, 1969

Modifications of pulmonary residual volume measuring method using closed circuit helium dilution technique. Respiration & Circulation 35(3): 299-303, 1987

Comparison of plethysmographic and helium dilution lung volumes: which is best for COPD?. Chest 137(5): 1108-1115, 2010

Determination of cardiac and pulmonary blood volumes and cardiac output in the neonatal period by means of radioisotope dilution curves. Acta Paediatrica Scandinavica. Supplement 206: Suppl 206:48+-Suppl 206:48+, 1970

A modified helium dilution technique for measuring small lung gas volumes. Journal of Developmental Physiology 17(2): 87-92, 1992

Comparison of helium dilution and plethysmographic lung volumes in pregnant women. European Respiratory Journal 10(10): 2371-2375, 1997

Multiple breath helium dilution measurement of lung volumes in adults. European Respiratory Journal 11(1): 246-255, 1998

Accuracy and precision of helium dilution technique and body plethysmography in measuring lung volumes. Scandinavian Journal of Clinical and Laboratory Investigation 32(3): 271-277, 1973