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KMID : 1240020160200020164
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International Neurourology Journal
2016 Volume.20 No. 2 p.164 ~ p.167
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Electroanatomical Mapping of the Urinary Bladder
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Fawzy Farag
Martin Koens
Marij Tijssen
Sytse de Jong
Timon Fabius
Johnny Tromp
Hendrikje van Breda
Joep Smeets
Wout Feitz
John Heesakkers
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Abstract
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A noncontact mapping system (EnSite) was used for electroanatomical mapping of the bladder simultaneously with pressure flow study in three women with lower urinary tract symptoms. We selected the periods of obvious detrusor activity. Data were processed to remove baseline drift, and an envelope of electrovesicography (EVG) data was created. The correlation coefficient for the correlation between between the EVG envelope and the detrusor pressure (Pdet) was calculated. Bladder geometry was successfully created in all 3 patients. Simultaneous recording of EVG and pressure flow data was successful in 1 patient. Scatter plots were made of the highest correlation coefficient, showing a positive correlation between the Pdet and the envelope, and negative correlation between abdominal pressure (Pabd) and the envelope. Minimal electrical activity could be observed. Significant weak to moderate correlation coefficients were found for the correlations between Pdet and EVG and between Pabd and EVG.
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KEYWORD
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Electrovesicography, Urodynamics, Urinary Bladder
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