Design and learnability of vortex whistles for managing chronic lung function via smartphones

Kaiser, Spencer A.; Parks, Ashley N.; Leopard, Patrick; Albright, Charlie A.; Carlson, Jake; Goel, Mayank; Nassehi, Damoun; Larson, Eric C.

doi:10.1145/2971648.2971726

Cited by 13 publications

(8 citation statements)

References 22 publications

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“…As previous published, this electronic device has shown promising results as a PEF meter. 8 According to guidelines from Global initiative for asthma, an excessive variability in twice-daily PEF >13% during 2 weeks may be helpful in confirming the asthma diagnosis. 1 In addition, short-term PEF monitoring may be used to assess response to treatment, evaluate asthma triggers, and establish a baseline for action plans.…”

Section: Discussionmentioning

confidence: 99%

“…Sound capture is performed by the smartphone microphone, and several software algorithms are applied to first estimate the frequency and harmonic following, then linear multivariate ridge regression is applied to find the flow rate, and eventually PEF. 8 The application collects and uploads the data automatically to a secure cloud server managed by digiDoc Technologies (Egersund, Norway). The devices' digital connectivity is advantageous compared to a regular PEF meter, as it enables data aggregation, analysis, and improved treatment support.…”

Section: Methodsmentioning

confidence: 99%

“…A novel three-dimensional printed vortex whistle using a smartphone's built-in microphone as a spirometer has been designed and evaluated as a useful portable alternative to clinical spirometry for managing moderate airway obstruction. 8 The aim of this observational study was to assess the feasibility for children with asthma to use the vortex whistle and smart phone application to measure PEF twice daily during a 4-week period.…”

Section: Introductionmentioning

confidence: 99%

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Vortex Whistle and Smart Phone Application for Peak Flow Recordings in Asthmatic Children: A Feasibility Study

Mikalsen

Nassehi

Øymar

2019

Telemedicine and e-Health

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Introduction: Variable airflow obstruction that can be confirmed by diurnal variability of peak expiratory flow (PEF) >13% is an important characteristic of asthma. Home monitoring of PEF may be helpful to diagnose and monitor asthma. In this feasibility study, we aimed to study if asthmatic children can measure PEF at home twice daily during a 4-week period using a device designed as a “whistle” and a smart phone software application.Materials and Methods: Twice daily during 4 weeks, children aged 5–12 years with current asthma rated their asthma condition electronically on the smart phone application Blowfish before inhaling deeply then exhaling into the device to produce a high-pitched sound recorded by the application. Through mathematical algorithms, the sound was transferred to PEF, which was uploaded to a server. At inclusion, the Pediatric Asthma Quality of Life Questionnaire and the Childhood Asthma Control Test were answered. At the end, the parents graded the device and application.Results: One child did not manage to upload PEF. For the remaining 21 children, the median (quartiles) days with at least one measurement during the period were 27 (21–29.5), and on median 18 (9–24) days PEF was recorded twice daily. The median parental score (potential score 0–20) of the application was 18 (15–20).Discussion/Conclusion: The study shows promising results for home monitoring of PEF by an electronic device with automatic teletransmission. The high rate of successful recordings and parental satisfaction suggests that the clinical utility of the solution should be further studied.

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Vortex Whistle and Smart Phone Application for Peak Flow Recordings in Asthmatic Children: A Feasibility Study

Mikalsen

Nassehi

Øymar

2019

Telemedicine and e-Health

Self Cite

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“…In comparison, medical devices are designed with physical interfaces that match the specific sensing needs: (Fig 3 To address these issues, passive attachments have often been pointed to as solutions to transduce and augment the sensors of smartphones to better interface with the human body. Examples include a funnel for sound channeling [2], vortex whistle to create pitch for wind velocity [5], finger holder to provide mechanical support [13], eye piece to block external light [9], and a color reference card for lighting correction [3,7,8,10]. However, these attachments can hinder the ubiquity of the measurement because they are often not widespread nor universal across phone models.…”

Section: Physical "Impedance" Mismatchmentioning

confidence: 99%

Tenets towards smartphone-based medical tricorders

Barry

Rahman

Wang

2021

Proceedings of the 2021 Workshop on Future of Digital Biomarkers

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There is a vision for smartphone-based medical tricorders, in which a software application can be downloaded to smartphones around the world in people's pockets to use for medical sensing at the point of care. The power of this vision lies in quick software updates that could allow any phone to count coughs, track anemia, detect sleep apnea, and much more. It has the potential to enable remote healthcare effectively and equalize the reach of care. However, there is a need for further discussion around the implicit difficulties to developing and deploying medical sensing applications. The reality is that every smartphone is different, and that an application developed for one phone has no guarantee of working for the next phone or even the next OS update. In this paper, our goal is to draw out motifs around the challenges that are inherent to realizing this vision of smartphone-based medical sensing solutions. We further expound on this by juxtaposing the challenges with potential futures that we organize as tenets for how we could achieve more sustainable and universal development towards smartphone-based medical tricorders. CCS CONCEPTS• Human-centered computing → Smartphones; Ubiquitous and mobile computing; Ubiquitous and mobile devices; Mobile phones; Mobile devices.

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“…activity [38] device use [83] car speed [35] emotions [177] energy use [5] coughing [124] device position [79] device position [166] whereabouts [56] lung function [123] emotions [46] stress [134] location [163] dangerous driving [246] appliance usage [250] no. people [243] firefighters [63] walking [25] heart rate [213] transport mode [192] skin disease [77] sleep [80] car position [135] tooth brushing [114] running [88] academic performance [231] boredom [172] nursing activity [99] depression [33] alertness [1] generic [242] lung function [106] blood [229] emotions [149] mental health [230] alcohol [11] skin disease [137] blood [81] brain injury [137] emotions [143] engagement [171] heart rate [148] schizophrenia [232] whereabouts [223] app use …”

Section: Ubiquitous Computing and Mobile Sensingmentioning

confidence: 99%

Computer-Cognition Interfaces: Sensing and influencing mental processes with computer interaction

Mottelson¹

2019

Preprint

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The variety of information about users hidden in the details of interaction data is increasingly being utilized for recognizing complex mental processes. Digital systems can correspondingly influence mental processes of users, paving the way for new interactive systems that interface with the human mind. This thesis presents advances to such interfaces: through four papers I show how human affect and cognition can be sensed and influenced computationally.Paper 1 presents two studies that together show that affect influences mobile interaction, which allows for binary discrimination between neutral and positive affect using sensor led machine learning classification. Paper 2 builds upon the methods presented in Paper 1 and extends the classification domain to dishonesty, also using mobile interaction data. The paper shows across three studies how dishonesty and honesty vary in interactional details, and how this difference can be utilized for estimating the veracity of user behavior based on features that are engineered by mobile interaction data.Paper 3 presents a feasibility study of conducting virtual reality studies outside a laboratory, to increase heterogeneity and power. The paper shows through two studies how a range of VR tasks can be conducted without the use of an immediate experimenter, with participants carrying out experiments themselves. In Paper 4 I apply this methodology, and conduct a VR study with more than 200 participants to study how manipulations to avatars can influence affect responses. The paper presents evidence supporting the link between affect and avatars, and additionally discusses the interplay between positive affect and body ownership.

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Design and learnability of vortex whistles for managing chronic lung function via smartphones

Cited by 13 publications

References 22 publications

Vortex Whistle and Smart Phone Application for Peak Flow Recordings in Asthmatic Children: A Feasibility Study

Vortex Whistle and Smart Phone Application for Peak Flow Recordings in Asthmatic Children: A Feasibility Study

Tenets towards smartphone-based medical tricorders

Computer-Cognition Interfaces: Sensing and influencing mental processes with computer interaction

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