The automatic recognition and counting of cough

Barry, Samantha J; Dane, Adrie; Morice, Alyn H.; Walmsley, Anthony D.

doi:10.1186/1745-9974-2-8

Cited by 156 publications

(79 citation statements)

References 20 publications

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“…Ten of them were validation studies concerning cough frequency monitoring in children and/or adults [12,13,14,15,16,17,18,19,20,21]. Seven studies validating cough-specific quality-of-life scores were included [22,23,24,25,26,27,28,29].…”

Section: Resultsmentioning

confidence: 99%

“…Measurement units are the explosive sound each time the patient coughs [13,15,21,32] or the coughing episode [18] occurs, and the events are defined as separate from one another by a free interval of a determined duration. Cough frequency can also be expressed in units of time spent coughing (e.g.…”

Section: Resultsmentioning

confidence: 99%

“…Four types of technology have been developed to identify coughs and to measure cough frequency. The first type of device is based on audio-recognition alone [7,13,15]; the second type of technology is based on audio signals plus electromyography (EMG; by identifying intercostal and/or abdominal muscle contractions, a cough is identified when the audio and EMG signals occur simultaneously) [17,18]; the third type is based on an accelerometer which measures the vibration at the suprasternal notch alone [16], and the fourth type is a multiparametric device based on plethysmography, electrocardiography, and an accelerometer (LifeShirt; VivoMetrics) [21]. All of these can potentially be used in an ambulatory setting.…”

Section: Resultsmentioning

confidence: 99%

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Validated Methods of Cough Assessment: A Systematic Review of the Literature

et al. 2010

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Background: Cough is a common symptom for which patients often seek medical advice and consume vast amounts of drugs. It is a real challenge for both the physician and the clinical researcher to evaluate a cough’s clinical importance and its precise response to treatment. Objectives: This systematic literature review has the following objectives: first, to make an inventory of the validated tools for assessing cough, and second, to investigate the extent to which the results of various assessment methods can be correlated. Methods: Two independent investigators searched the Medline, Embase, and Cochrane databases for validation studies on cough assessment tools. Results: Thirty-four studies were included. Several ambulatory cough monitors automatically identify cough and have been validated in a limited number of patients. Three cough-specific quality-of-life scales (Leicester Cough Questionnaire, Cough Quality of Life Questionnaire, and Burden of Cough Questionnaire) have been validated. No validation studies of descriptive scores or visual analogue scales were found. The correlations between quality-of-life scores and cough frequency were good. The correlations between descriptive scores or visual analogue scales and more objective methods, such as cough frequency monitoring or quality-of-life scores, were inconsistent. Conclusion: Cough-specific quality-of-life questionnaires can provide valid outcomes for research into cough. Although the current developments in cough monitoring devices are promising, further studies on a larger scale, under more realistic conditions, and for different patterns of cough are required before they can be recommended for widespread use.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Validated Methods of Cough Assessment: A Systematic Review of the Literature

et al. 2010

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“…The sensitivity of the system is most recently reported as 83.8 % in patients (n=12) and 82.3 % in healthy controls (n=8) (Yousaf et al 2013) on pooled data; how the sensitivity varies between individual subjects is not reported. The Hull Automated Cough Counter which uses neural network-based technology to recognize sounds is still in development (Barry et al 2006). The final cough counting system is the VitaloJAK (Vitalograph Limited, Buckinghamshire, UK), which uses a custom-made digital recording device to record cough through sounds detected by microphones on the chest wall and lapel ).…”

Section: Ambulatory Cough Countingmentioning

confidence: 99%

Targeting TRP channels for chronic cough: from bench to bedside

Bonvini

Birrell

Smith

et al. 2015

Naunyn-Schmiedeberg's Arch Pharmacol

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Cough is currently the most common reason for patients to visit a primary care physician in the UK, yet it remains an unmet medical need. Current therapies have limited efficacy or have potentially dangerous side effects. Under normal circumstances, cough is a protective reflex to clear the lungs of harmful particles; however, in disease, cough can become excessive, dramatically impacting patients' lives. In many cases, this condition is linked to inflammatory diseases such as asthma and chronic obstructive pulmonary disease (COPD), but can also be refractory to treatment and idiopathic in nature. Therefore, there is an urgent need to develop therapies, and targeting the sensory afferent arm of the reflex which initiates the cough reflex may uncover novel therapeutic targets. The cough reflex is initiated following activation of ion channels present on vagal sensory afferents. These ion channels include the transient receptor potential (TRP) family of cation-selective ion channels which act as cellular sensors and respond to changes in the external environment. Many direct activators of TRP channels, including arachidonic acid derivatives, a lowered airway pH, changes in temperature, and altered airway osmolarity are present in the diseased airway where responses to challenge agents which activate airway sensory nerve activity are known to be enhanced. Furthermore, the expression of some TRP channels is increased in airway disease. Together, this makes them promising targets for the treatment of chronic cough. This review will cover the current understanding of the role of the TRP family of ion channels in the activation of airway sensory nerves and cough, focusing on four members, transient receptor potential vanilloid (TRPV) 1, transient receptor potential ankyrin (TRPA) 1, TRPV4, and transient receptor potential melastatin (TRPM) 8 as these represent the channels where most information has been gathered with relevance to the airways. We will describe recent data and highlight the possible therapeutic utility of specific TRP channel antagonists as antitussives in the clinic.

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“…Additionally, they experiment voluntary cough from only healthy subjects. The Hull Automatic Cough Counter (HACC) [18], uses an event detection logic based on adaptable thresholding. The spectral coefficients are calculated for detected event candidates, which are then classified into cough and non-cough sounds by the use of PNNs.…”

Section: Physiology and Related Workmentioning

confidence: 99%

Voluntary cough detection by internal sound analysis

Lucio

Teixeira

Henriques

et al. 2014

2014 7th International Conference on Biomedical Engineering and Informatics

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Abstract-Cough can be defined as a forced expulsive onrush, normally against a closed glottis, producing a characteristic sound. It can be an indicator of many respiratory diseases, and its counting and classification is an important aspect. We propose a method on internal sound signal to automatically identify, count and (partly) qualify cough sounds. Our approach relies on explosive phase detection, because of its acoustic and spectral distinctive characteristics, and its potential for accurate onset detection of cough sounds. The features analyzed, related with tonality, pitch, timbre and frequency, prove to be very relevant in our explosive phase detection approach. Our results show a recall value of 86.6% and a precision value of 84.3%, for a wide testing population with and without respiratory perturbations. The internal sound analysis reveals advantageous in external noise reduction, therefore internal sounds are highlighted and better characterized.

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The automatic recognition and counting of cough

Cited by 156 publications

References 20 publications

Validated Methods of Cough Assessment: A Systematic Review of the Literature

Validated Methods of Cough Assessment: A Systematic Review of the Literature

Targeting TRP channels for chronic cough: from bench to bedside

Voluntary cough detection by internal sound analysis

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