Position affects distribution of ventilation in the lungs of older people: an experimental study

Krieg, S, Alison, J, McCarren, B and Cowell, S 2007, 'Position affects distribution of ventilation in the lungs of older people: an experimental study', Australian Journal of Physiotherapy, vol. 53, pp. 179-184.


Document type: Journal Article
Collection: Journal Articles

Title Position affects distribution of ventilation in the lungs of older people: an experimental study
Author(s) Krieg, S
Alison, J
McCarren, B
Cowell, S
Year 2007
Journal name Australian Journal of Physiotherapy
Volume number 53
Start page 179
End page 184
Total pages 6
Publisher Australian Physiotherapy Association
Abstract Question: What is the effect of sitting and side-lying on the distribution of ventilation during tidal breathing in healthy older people? Design: Randomised, within-participant, experimental study. Participants: Ten healthy people more than 65 years old. Intervention: Tidal breathing during sitting and right side-lying. Outcome measures: Distribution of ventilation as a percentage of total counts using Technetium-99m Technegas lung ventilation imaging. Results: In sitting, the ratio of the distribution of ventilation to apical: middle: basal regions was 1: 3.5: 3.3 in the right lung, and 1: 2.9: 2.3 in the left lung. In right side-lying, 32% (95% Cl 22 to 43) more ventilation was distributed to the right lung than to the left lung. The ratio of the distribution of ventilation to apical: middle: basal regions was 1: 2.8: 2.2 in the right lung, and 1: 2.4:1.9 in the left lung. Conclusions: In both sitting and right side-lying, ventilation was distributed more to the middle than to the basal region, which may be related to age-associated changes in the respiratory system.
Subject Radiology and Organ Imaging
Keyword(s) Inspiratory Flow-Rate
Regional Distribution
Inspired Gas
Pulmonary Ventilation
Airway-Closure
Krypton-81M Gas
Lateral Posture
Body Position
Technegas
Perfusion
ISSN 0004-9514
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Citation counts: TR Web of Science Citation Count  Cited 7 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 6 times in Scopus Article | Citations
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