Mobile sonouroflowmetry using voiding sound and volume

Helou, Elie El; Naba, J; Youssef, Karim; Mjaess, Georges; Sleilaty, Ghassan; Helou, Samar

doi:10.1038/s41598-021-90659-9

Cited by 11 publications

(23 citation statements)

References 28 publications

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“…Uroflowmetry entails the measurement of parameters such as voided volume, maximum and minimum flow rate, which collectively provides insights into the normal and abnormal conditions of the urinary tract. [ 52 ] Alternatively, acoustic uroflowmetry, [ 53 ] and mobile sonouroflowmetry [ 54 ] have been demonstrated and validated for the same purpose. Figure summarizes the schematic of the simulated urination process using disposable TENG (Di‐TENG) as a sensor tool and its detailed signal processing steps coupled with an AI algorithm for evaluating the urination condition.…”

Section: Resultsmentioning

confidence: 99%

Nitrogen and Sulfur Rich Covalent Organic Framework‐Chitosan Triboelectric Nanogenerator for Disposable Urination Evaluation Tool

Sathiyanathan,

Saatchi,

Boo

et al. 2023

Adv Materials Technologies

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Regular health checkups are crucial for the identification of problems in connection with acute and chronic diseases. Early detection helps patients prevent disease progression, receive more effective treatment, and improve their overall prognosis and quality of life. In this context, the introduction of cost‐effective, advanced sensor technology for the monitoring of healthcare is an essential and unavoidable approach. The present study proposes a disposable triboelectric nanogenerator (TENG) based sensor for a novel urination condition evaluation methodology that is integrated with an artificial intelligence (AI) algorithm. The disposable TENG sensor is fabricated using chitosan‐covalent organic framework (CS‐NSCoF). The optimized CS‐NSCoF (4%) composite, in contact with fluorinated ethylene propylene (FEP), yields remarkable output performance metrics: a peak‐to‐peak voltage of 132 V, a short‐circuit current of ≈2.38 µA, and an average power density of 10.89 mW m−2 at a load resistance of 200 MΩ. Notably, biocompatibility assessments confirm the non‐toxic nature of the CS‐NSCoF sample in this investigation.

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Section: Resultsmentioning

confidence: 99%

Nitrogen and Sulfur Rich Covalent Organic Framework‐Chitosan Triboelectric Nanogenerator for Disposable Urination Evaluation Tool

Sathiyanathan,

Saatchi,

Boo

et al. 2023

Adv Materials Technologies

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“…13 Among our studies, only Lee et al that included pathologic subjects and the rest tested only with control populations. 5,14,15 As only one study included female participants, 16 the accuracy and reliability of sonouroflowmetry in this group remain unknown when compared to conventional uroflowmetry. This might be attributed to the difference in the needs of toiletries (e.g., toilet shapes, size, and amount of water needed) between male and female, especially as female needs more facilities as compared to male.…”

Section: Discussionmentioning

confidence: 99%

“…[13][14][15][16] Three studies reported highly significant correlation in the average flow rate between Sono and conventional uroflowmetry. [13][14][15] Figure 1C shows the pooled correlation of the a5erage flow rate between tests, ranging from 0.7 to 0.85. Based on the analysis, a high heterogeneity was found (I 2 = 96.62% [95% CI: 93.84%-98.14%]).…”

Section: • Average Flow Ratementioning

confidence: 99%

Comparative study of mobile acoustic uroflowmetry and conventional uroflowmetry: A systematic review and meta analysis

Rangganata,

Rahardjo,

Rasyid

et al. 2024

Neurourology and Urodynamics

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IntroductionUroflowmetry is a noninvasive measurement of the volume of urine excreted over time. Conventional uroflowmetry has become the main modality of urine flow measurement within time. However, this method requires the patient to be present in the hospital or healthcare setting, thus sometimes making the patients feel uncomfortable to undergo the examination. This led to multiple measurements which are inconvenient for the patients. Mobile acoustic uroflowmetry (sono‐uroflowmetry) has been proposed as an alternative method of urine flow measurement due to its portability. This study aimed to evaluate the accuracy and reliability of sono‐uroflowmetry as compared to conventional uroflowmetry.MethodsElectronic databases searching were done using prespecified search strategy to retrieve articles related with uroflowmetry. In addition, hand‐search strategy was used to identify additional articles. Studies with participants who had undergone sono‐uroflowmetry were included. Voided volume, voiding duration, maximum flow rate, and average flow rate were identified and used to determine the outcomes of measurement. The quality of included articles was conducted using checklist for Diagnostic Test Accuracy Studies by JBI.ResultsInitial search yielded 335 articles with four additional papers identified through hand‐searching process. Six papers were retrieved and further used in the narrative synthesis. Five studies enrolled male participants, while only one of the papers enrolled female participants as additional subgroup analysis. Therefore, the meta‐analysis was performed by using only male participants. Based on the meta‐analysis results, there were strong to very strong positive correlation in voided volume, voiding time, average flow, average flow rate, and maximum flow rate between sono and conventional uroflowmetry.ConclusionSonouroflowmetry showed significant positive correlations to conventional uroflowmetry, signifying its use as an alternative of conventional uroflowmetry.

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“…Echoing the technology used in the Swan‐Ganz catheter to estimate cardiac output, 18 Viarani et al 19 described a temperature sensor that measures uroflow as the urine cools down by its passage through the apparatus' two membranes. Kato et al 20 used a turbine sensor allied with Bluetooth technology, and Helou et al 21 were able to produce a voiding curve with the sound of the voiding stream.…”

Section: Discussionmentioning

confidence: 99%

Development and construction of an open‐platform, open‐source low‐cost portable uroflowmeter: The OpenFlow device

Gallo,

Cabral Dias Filho,

Cruz

et al. 2023

Neurourology and Urodynamics

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BackgroundUroflowmetry is useful to screen for and manage many voiding disorders. Home‐based uroflowmetry might better represent the patient's true voiding pattern and be more widely adopted if an accurate low‐cost portable device was available.ObjectiveDevelopment and initial evaluation of an open‐platform, open‐source low‐cost portable uroflowmeter.Materials and MethodsWe designed and built an uroflowmeter comprising of a load cell and digital memory card unit connected to a programmable microcontroller board mounted upon a 3D printed frame. It generated date‐stamped tables which were processed and plotted. Twenty urologists were recruited to assess the device. Each participant received the equipment that was returned, along with a bladder diary, after at least 24 consecutive hours of homemade uroflowmetry recording. Additionally, were assessed with the International Prostatic Symptom Score (I‐PSS) and Peeling diagram, whereas the device's ease of use, robustness, and portability were evaluated with a Likert‐type questionnaire. Two experienced urodynamicists independently evaluated the tracings' quality rated with a 3° ordinal scale: (1) Interpretable without artifacts; (2) Interpretable with artifacts; (3) Uninterpretable.ResultsParticipants' median age was 36.6 years old, none having an I‐PSS > 5 or Peeling > 2. Overall 138 voidings were recorded (77 daytime, 61 nightly episodes). The device's ease of use, robustness, and portability obtained maximum score in 80% of evaluations. Most (98%) of the tracings were considered interpretable. Limitations included its small study population and short monitoring times.ConclusionThe construction of a cheap (<50 USD), accurate user‐friendly portable uroflowmeter proved feasible, which could facilitate access to portable uroflowmetry.

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Mobile sonouroflowmetry using voiding sound and volume

Cited by 11 publications

References 28 publications

Nitrogen and Sulfur Rich Covalent Organic Framework‐Chitosan Triboelectric Nanogenerator for Disposable Urination Evaluation Tool

Nitrogen and Sulfur Rich Covalent Organic Framework‐Chitosan Triboelectric Nanogenerator for Disposable Urination Evaluation Tool

Comparative study of mobile acoustic uroflowmetry and conventional uroflowmetry: A systematic review and meta analysis

Development and construction of an open‐platform, open‐source low‐cost portable uroflowmeter: The OpenFlow device

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