The description of cough sounds by healthcare professionals

Smith, Jaclyn A.; Ashurst, H. Louise; Jack, Sandy; Woodcock, Ashley; Earis, J. E.

doi:10.1186/1745-9974-2-1

Cited by 72 publications

(39 citation statements)

References 13 publications

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“…A previous investigation by Smith et al has shown the ability of health care professionals to distinguish between these types of cough with a high accuracy by listening solely to the sound of cough. 17 If an epoch contained at least one productive cough event, the epoch was classified as productive. Furthermore, we investigated median cough epoch length and median number of cough events in a cough epoch.…”

Section: Methodsmentioning

confidence: 99%

Description of nighttime cough epochs in patients with stable COPD GOLD II–IV

Fischer¹,

Groß²,

Kroenig³

et al. 2018

COPD

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PurposeChronic cough is one of the main symptoms of COPD. Ambulatory objective monitoring provides novel insights into the determinants and characteristics of nighttime cough in COPD.Materials and methodsNighttime cough was monitored objectively by LEOSound lung sound monitor in patients with stable COPD II–IV. In 30 patients, with 10 patients in each stage group, nighttime cough was analyzed for epoch frequency, epoch severity (epoch length and coughs per epoch), and pattern (productive or nonproductive).ResultsCough was found in all patients ranging from 1 to 294 events over the recording period. In 29 patients, cough epochs were monitored, ranging from 1 to 75 epochs. The highest amount of cough epochs was found in patients with COPD stage III. Active smokers had significantly more productive cough epochs (61%) than nonsmokers (24%).ConclusionWe found a high rate of nighttime cough epochs in patients with COPD, especially in those in stage III. Productive cough was predominantly found in patients with persistent smoking. LEOSound lung sound monitor offers a practical and valuable opportunity to evaluate cough objectively.

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Section: Methodsmentioning

confidence: 99%

Description of nighttime cough epochs in patients with stable COPD GOLD II–IV

Fischer¹,

Groß²,

Kroenig³

et al. 2018

COPD

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“…There are three phases in a typical cough event [10] [23]. These phases are typically called the (1) initial cough sound, (2) intermediate phase, and (3) second cough sound [23]. Figure 1 presents an example COVID cough event with each phase identified.…”

Section: Cough Phase Annotationmentioning

confidence: 99%

“…For example, Chatrzarrin et al used the power variations between the first and second phase as a feature for differentiating between wet and dry cough events. Furthermore, some cough events do not contain the third phase ( Figure 2) [23]. The reduction or complete absence of this phase may also be a potential tool for differentiation.…”

Section: Cough Phase Annotationmentioning

confidence: 99%

Novel Coronavirus Cough Database: NoCoCoDa

2020

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The current pandemic associated with the novel coronavirus (COVID-19) presents a new area of research with its own set of challenges. Creating unobtrusive remote monitoring tools for medical professionals that may aid in diagnosis, monitoring and contact tracing could lead to more efficient and accurate treatments, especially in this time of physical distancing. Audio based sensing methods can address this by measuring the frequency, severity and characteristics of the COVID-19 cough. However, the feasibility of accumulating coughs directly from patients is low in the short term. This paper introduces a novel database (NoCoCoDa), which contains COVID-19 cough events obtained through public media interviews with COVID-19 patients, as an interim solution. After manual segmentation of the interviews, a total of 73 individual cough events were extracted and cough phase annotation was performed. Furthermore, the COVID-19 cough is typically dry but can present as a more productive cough in severe cases. Therefore, an investigation of cough sub-type (productive vs. dry) of the NoCoCoDa was performed using methods previously published by our research group. Most of the NoCoCoDa cough events were recorded either during or after a severe period of the disease, which is supported by the fact that 77% of the COVID-19 coughs were classified as productive based on our previous work. The NoCoCoDa is designed to be used for rapid exploration and algorithm development, which can then be applied to more extensive datasets and potentially real time applications. The NoCoCoDa is available for free to the research community upon request. INDEX TERMS Acoustic signal processing, audio databases, audio systems, biomedical measurement, biomedical monitoring, data analysis, data collection, medical conditions, medical diagnosis, patient monitoring, smart homes.

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“…A range of healthcare professionals listening to cough sounds from patients with different diseases can accurately recognize the presence–absence of airway sputum, but are poor at specifying the patient’s disease (Smith et al 2006a). The development of an automated system for ambulatory cough counting, over at least 24 hours, would revolutionize the study of cough and its importance in respiratory disease in general, and COPD in particular.…”

Section: Clinical Studies Of Cough In Copdmentioning

confidence: 99%

Cough and its importance in COPD

Smith¹,

Woodcock²

2006

International Journal of COPD

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Patients with COPD most frequently complain of breathlessness and cough and these are both increased during exacerbations. Studies have generally focused on quality of life during end-stage disease, where breathlessness becomes dominant and cough less important. There are very little data on the frequency and severity of cough in COPD or its impact on quality of life at different stages of disease. Little is known about the factors that influence objective cough counts in COPD. Cough may be a marker for progressive disease in milder COPD patients who continue to smoke, and it may be useful in case-finding for milder disease in the community. The cough reflex sensitivity is heightened in COPD compared with healthy volunteers and similar to that in subjects with asthma. The degree of airflow obstruction does not predict cough reflex sensitivity or objective cough counts, implying an independent process. Effective treatments for cough in COPD have not yet been identified. Improved outcome measures of cough, a better understanding of cough in the natural history of COPD, and its importance to patients are needed.

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The description of cough sounds by healthcare professionals

Cited by 72 publications

References 13 publications

Description of nighttime cough epochs in patients with stable COPD GOLD II–IV

Description of nighttime cough epochs in patients with stable COPD GOLD II–IV

Novel Coronavirus Cough Database: NoCoCoDa

Cough and its importance in COPD

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The description of cough sounds by healthcare professionals

Cited by 72 publications

References 13 publications

Description of nighttime cough epochs in patients with stable COPD GOLD II&ndash;IV

Description of nighttime cough epochs in patients with stable COPD GOLD II&ndash;IV

Novel Coronavirus Cough Database: NoCoCoDa

Cough and its importance in COPD

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Description of nighttime cough epochs in patients with stable COPD GOLD II–IV

Description of nighttime cough epochs in patients with stable COPD GOLD II–IV