Effect of Positioning on Recorded Lung Sound Intensities in Subjects Without Pulmonary Dysfunction

Jones, Aym; Jones, R. D. M.; Kwong, Kevin; Burns, Yvonne

doi:10.1093/ptj/79.7.682

Cited by 21 publications

(19 citation statements)

References 10 publications

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“…Respiratory sounds were recorded mainly from the posterior chest (right and left) [3,18,28e36,38e41], 5 studies recorded from the anterior chest [28,30,32,34,40], 6 from the trachea [29,31,33,35,38,39] and 1 from the nasal cavity [37]. Recordings were performed with the subjects standing [3,28,29,40], lying [18,31,33,36] or sitting [6,30,38,39], with different recording devices such as conventional [3,30,33,37,40], electret [28,31,32] and condenser [35] microphones, piezoelectric contact sensors [6,29,34,35,38], sound transducers [18] and contact accelerometers [39].…”

Section: Study Characteristicsmentioning

confidence: 99%

Respiratory sounds in healthy people: A systematic review

Oliveira

Marques

2014

Respiratory Medicine

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Section: Study Characteristicsmentioning

confidence: 99%

Respiratory sounds in healthy people: A systematic review

Oliveira

Marques

2014

Respiratory Medicine

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“…The patient is instructed to lie quietly on the table and to breath with a maximum inspiratory flow of 1.5 l/s. This corresponds to values used from the authors in (Jones et al, 1999;Malmberg et al, 1995) and also the recommendations in the CORSA standard (Vannuccini et al, 2000). The recording time can be specified in the recording software.…”

Section: Measurement Proceduresmentioning

confidence: 77%

A Robust Multichannel Lung Sound Recording Device

Messner

Hagmüller

Swatek

et al. 2016

Proceedings of the 9th International Joint Conference on Biomedical Engineering Systems and Technologies

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This paper presents a robust multichannel lung sound recording device (LSRD) for automatic lung sound classification. Compared to common approaches, we improved the usability and the robustness against body sounds and ambient noise. We developed a novel lung sound transducer (LST) and an appropriate attachment method realized as a foam pad. For analogue prefiltering, preamplification, and digitization of the lung sound signal, we use a composition of low-cost standard audio recording equipment. Furthermore, we developed a suitable recording software. In our experiments, we show the robustness of our LSRD against ambient noise, and we demonstrate the achieved signal quality. The LST's microphone features a signal-to-noise ratio of SNR = 80 dB. Therefore, we obtain a bandwidth of up to a frequency of f ≈ 2500 Hz for vesicular lung sound recordings. Compared to the attachment of the LST with self-adhesive tape, the foam pad achieves an attenuation of ambient noise of up to 50 dB in the relevant frequency range. The result of this work is a multichannel recording device, which enables a fast gathering of valuable lung sounds in noisy clinical environments without impeding the daily routines.

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“…It is defined as the act of listening for sounds within the body, mainly for ascertaining the condition of the lungs, heart and other organs [2]. Diseases such as asthma, tuberculosis can be identified with this method through the analysis of lung and tracheal sounds.…”

Section: Introductionmentioning

confidence: 99%

Separating Heart Sound from Lung Sound Using LabVIEW

Khan¹,

Vijayakumar²

2010

IJCEE

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Abstract-Heart sounds interfere with lung sounds in a way that hampers the potential of respiratory sound analysis in terms of diagnosis of respiratory illness. This paper implements a VI for Heart Sound (HS) cancellation from Lung Sound (LS) records using the Advanced Signal Processing Toolkit of Lab VIEW 8.2. The method uses the multiresolution analysis of the wavelet approximation coefficients of the original signal to detect HS-included segments. Once the HS segments are identified, the method removes them from the wavelet coefficients and estimates the created gaps by using TSA ARMA modeling and prediction. Index Terms-Virtual

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Effect of Positioning on Recorded Lung Sound Intensities in Subjects Without Pulmonary Dysfunction

Abstract: When comparative auscultation of the chest wall is used by physical therapists to assess the adequacy of pulmonary ventilation, patient posture and regional differences in breath sound intensity can influence clinical interpretation.

Cited by 21 publications

References 10 publications

Respiratory sounds in healthy people: A systematic review

Respiratory sounds in healthy people: A systematic review

A Robust Multichannel Lung Sound Recording Device

Separating Heart Sound from Lung Sound Using LabVIEW

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