Inter-individual variability of added lung sounds in a healthy population
Inter-individual variability of added lung sounds in a healthy population
Introduction: Computer aided lung sound analysis (CALSA) can provide a wealth of information about normal and adventitious lung sounds. Currently there is a lack of information about the ‘normality‘ of these sounds and how they relate to anthropometric variables. This research aimed to create a database of normal reference values and explore the effect that gender, height, body mass index (BMI) and lung function might have on crackle parameters.
Methods: One hundred healthy participants were recruited; anthropometric and spirometry data were collected. A digital stethoscope connected to a laptop was used to record lung sounds at seven chest locations; participants were seated and mouth breathing slightly deeper than tidal volume. Lung sound data were analysed by time expanded waveform analysis. Descriptive and inferential statistics were used to summarise data and test hypotheses.
Results: Males were found to have significantly longer durations of initial deflection width (IDW) compared to females at two chest wall locations (p<0.05). Two cycle deflection (2CD) differed significantly (p<0.05) at three locations for participant heights <1.71m compared to ?1.71m. Only one significant correlation (trachea) was found between BMI and IDW (r=0.214, p=0.033) and BMI and 2CD (r=0.245, p=0.014). Although some statistically significant relationships were detected between lung function and crackle parameters, the highest r was 0.29.
Conclusions: There was no convincing evidence of any consistent relationship between crackle frequency and gender, height, BMI or lung function. Therefore, it is unlikely these variables are responsible for the inter-individual differences noted in crackle parameters in healthy people.
Marques, Alda
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Bruton, Anne
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Mahoney, Katie
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Kolstoe, Katanya
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Moss, Rebecca
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Thomas, Sheryl
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Beverley, Zelda
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14 September 2009
Marques, Alda
d8990c23-6d85-4379-ae44-01002b5b9cd4
Bruton, Anne
9f8b6076-6558-4d99-b7c8-72b03796ed95
Mahoney, Katie
ba81109d-89a1-4dab-a124-e58f54eab433
Kolstoe, Katanya
9d89e401-5b0e-4db4-a94c-22ca88acb17b
Moss, Rebecca
ddbc4949-9a1a-4c06-b1d7-ecee0d7e1d30
Thomas, Sheryl
3ff770e8-223c-483d-a373-2b4bda19f80e
Beverley, Zelda
f7881d38-bbd1-4e24-a0aa-9606494017cf
Marques, Alda, Bruton, Anne, Mahoney, Katie, Kolstoe, Katanya, Moss, Rebecca, Thomas, Sheryl and Beverley, Zelda
(2009)
Inter-individual variability of added lung sounds in a healthy population.
European Respiratory Society Annual Congress, Vienna, Austria.
11 - 15 Sep 2009.
Record type:
Conference or Workshop Item
(Poster)
Abstract
Introduction: Computer aided lung sound analysis (CALSA) can provide a wealth of information about normal and adventitious lung sounds. Currently there is a lack of information about the ‘normality‘ of these sounds and how they relate to anthropometric variables. This research aimed to create a database of normal reference values and explore the effect that gender, height, body mass index (BMI) and lung function might have on crackle parameters.
Methods: One hundred healthy participants were recruited; anthropometric and spirometry data were collected. A digital stethoscope connected to a laptop was used to record lung sounds at seven chest locations; participants were seated and mouth breathing slightly deeper than tidal volume. Lung sound data were analysed by time expanded waveform analysis. Descriptive and inferential statistics were used to summarise data and test hypotheses.
Results: Males were found to have significantly longer durations of initial deflection width (IDW) compared to females at two chest wall locations (p<0.05). Two cycle deflection (2CD) differed significantly (p<0.05) at three locations for participant heights <1.71m compared to ?1.71m. Only one significant correlation (trachea) was found between BMI and IDW (r=0.214, p=0.033) and BMI and 2CD (r=0.245, p=0.014). Although some statistically significant relationships were detected between lung function and crackle parameters, the highest r was 0.29.
Conclusions: There was no convincing evidence of any consistent relationship between crackle frequency and gender, height, BMI or lung function. Therefore, it is unlikely these variables are responsible for the inter-individual differences noted in crackle parameters in healthy people.
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Published date: 14 September 2009
Venue - Dates:
European Respiratory Society Annual Congress, Vienna, Austria, 2009-09-11 - 2009-09-15
Identifiers
Local EPrints ID: 66384
URI: http://eprints.soton.ac.uk/id/eprint/66384
PURE UUID: fa5c2506-5f0c-4d14-97bd-ccdc4ba3fac8
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Date deposited: 04 Feb 2010
Last modified: 11 Dec 2021 03:06
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Contributors
Author:
Alda Marques
Author:
Anne Bruton
Author:
Katie Mahoney
Author:
Katanya Kolstoe
Author:
Rebecca Moss
Author:
Sheryl Thomas
Author:
Zelda Beverley
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