4.3 Article

Comparison between uroflowmetry and sonouroflowmetry in recording of urinary flow in healthy men

期刊

INTERNATIONAL JOURNAL OF UROLOGY
卷 22, 期 8, 页码 761-765

出版社

WILEY
DOI: 10.1111/iju.12796

关键词

sound recording; urinary flow; voided volume; wireless data transfer

资金

  1. European Regional Development Fund
  2. Project of IT4Innovations Centre of Excellence [CZ.1.05/1.1.00/02.0070, VP6]

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Objectives To evaluate the accuracy of sonouroflowmetry in recording urinary flow parameters and voided volume. Methods A total of 25 healthy male volunteers (age 18-63 years) were included in the study. All participants were asked to carry out uroflowmetry synchronous with recording of the sound generated by the urine stream hitting the water level in the urine collection receptacle, using a dedicated cell phone. From 188 recordings, 34 were excluded, because of voided volume < 150 mL or technical problems during recording. Sonouroflowmetry recording was visualized in a form of a trace, representing sound intensity over time. Subsequently, the matching datasets of uroflowmetry and sonouroflowmetry were compared with respect to flow time, voided volume, maximum flow rate and average flow rate. Pearson's correlation coefficient was used to compare parameters recorded by uroflowmetry with those calculated based on sonouroflowmetry recordings. Results The flow pattern recorded by sonouroflowmetry showed a good correlation with the uroflowmetry trace. A strong correlation (Pearson's correlation coefficient 0.87) was documented between uroflowmetry-recorded flow time and duration of the sound signal recorded with sonouroflowmetry. A moderate correlation was observed in voided volume (Pearson's correlation coefficient 0.68) and average flow rate (Pearson's correlation coefficient 0.57). A weak correlation (Pearson's correlation coefficient 0.38) between maximum flow rate recorded using uroflowmetry and sonouroflowmetry-recorded peak sound intensity was documented. Conclusions The present study shows that the basic concept utilizing sound analysis for estimation of urinary flow parameters and voided volume is valid. However, further development of this technology and standardization of recording algorithm are required.

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