Non-invasive parameter for assessing urine flow rate in frequency domain to differentiate detrusor underactivity with bladder outlet obstruction in male

Lli, Rui; Gammie, Andrew; Zhu, Quanmin; Nibouche, Mokhtar

Abstract

To differentiate Detrusor underactivity (DU) with bladder outlet obstruction (BOO), we have assessed free urine flow in frequency domain, and proposed median power frequency (MPF) as a potential urodynamic indicator for diagnosing DU.
As a continuation research from the previous result1, we have quantitively analysed the difference of high frequency component between DU and BOO flow curve using Fourier transform, to calculate median power frequency. By applying an Elliptic filter with bandpass frequency of 0.3Hz-1Hz on the UFR curve, little drops, some of artefacts and flow mainly voided by detrusor contraction have been filtered off. Then MPF was calculated in whole filtered curve and first/second half of filtered curve.
When comparing DU group with BOO group by using MPF in second half curve, a significant different was found with P value

• Presentation Conference Type: Presentation / Talk
• Conference Name: Incontinence XI: The Engineering Challenge
• Start Date: Nov 28, 2017
• End Date: Nov 29, 2017
• Acceptance Date: Sep 1, 2017
• Publication Date: Nov 27, 2017
• Deposit Date: Dec 11, 2017
• Publicly Available Date: Dec 11, 2017
• Peer Reviewed: Not Peer Reviewed
• Keywords: detrusor underactivity, non-invasive, frequency domain
• Public URL: https://uwe-repository.worktribe.com/output/878113
• Additional Information: Title of Conference or Conference Proceedings : Incontinence XI: The Engineering Challenge
• Contract Date: Dec 11, 2017