Electroanatomical Mapping of the Urinary Bladder
Fawzy Farag1,2, Martin Koens1, Marij Tijssen3
1Department of Urology, Radboud University Medical Center, Nijmegen, The Netherlands.
International Neurourology Journal
|July 6, 2016
Summary
This study explored electrovesicography (EVG) for bladder mapping during pressure flow studies. Results showed a correlation between EVG signals and bladder pressure, suggesting potential for non-contact bladder monitoring.
Area of Science:
- Urology
- Medical Engineering
- Physiology
Background:
- Lower urinary tract symptoms (LUTS) affect many individuals.
- Accurate bladder pressure measurement is crucial for diagnosing LUTS.
- Current methods for bladder assessment can be invasive.
Purpose of the Study:
- To evaluate the feasibility of noncontact electroanatomical bladder mapping using the EnSite system.
- To assess the correlation between electrovesicography (EVG) and detrusor pressure (Pdet) during simultaneous pressure flow studies.
Main Methods:
- Utilized the EnSite noncontact mapping system for electroanatomical mapping of the bladder.
- Performed simultaneous pressure flow studies in three women with LUTS.
- Selected periods of significant detrusor activity for data acquisition.
- Processed EVG data to remove baseline drift and created an envelope.
- Calculated correlation coefficients between the EVG envelope, detrusor pressure (Pdet), and abdominal pressure (Pabd).
Main Results:
- Successful bladder geometry creation in all three patients.
- Simultaneous EVG and pressure flow recording achieved in one patient.
- Positive correlation observed between Pdet and the EVG envelope.
- Negative correlation noted between abdominal pressure (Pabd) and the EVG envelope.
- Weak to moderate significant correlation coefficients found between Pdet/Pabd and EVG.
Conclusions:
- Noncontact electroanatomical mapping of the bladder is feasible.
- EVG shows potential as a noninvasive method for monitoring bladder activity.
- Further research is needed to refine EVG techniques for clinical application in LUTS diagnosis.
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