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J Obstet Gynaecol Res. 2011 Aug;37(8):1071-5. doi: 10.1111/j.1447-0756.2010.01487.x. Epub 2011 Apr 19.

Noninvasive electrical impedance analysis to measure human urinary bladder volume.

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1
Institute of Biomedical Engineering, National Taiwan University, Taipei, Taiwan. dr.liaowc@msa.hinet.net

Abstract

AIM:

To assess urinary bladder volume in a noninvasive manner using a portable and modified device that measures electrical impedance.

METHODS:

A novel method was attempted to measure electrical impedance and indirect bladder volume, and these data were used to calculate the actual bladder volume.

RESULTS:

An increase of 0.01 V in the abdominal voltage was observed with every 50 mL increase in the amount of physiological saline infused into the bladder.

CONCLUSIONS:

It is a simple procedure and can be used by technical staff or the patients themselves to obtain continuous, real-time urinary bladder volume data.

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