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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.

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Accession: 005288735

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