title: Electroanatomical Mapping of the Urinary Bladder.
abstract: 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.
authors.affiliation: Department of Urology, Radboud University Medical Center, Nijmegen, The Netherlands.|Department of Urology, Sohag University Hospital, Sohag, Egypt.
authors.forename: Fawzy
authors.identifier: 0000-0003-2894-3898
authors.initials: F
authors.lastname: Farag
authors.affiliation: Department of Urology, Radboud University Medical Center, Nijmegen, The Netherlands.
authors.forename: Martin
authors.initials: M
authors.lastname: Koens
authors.affiliation: Technical Medicine, University of Twente, Enschede, The Netherlands.
authors.forename: Marij
authors.initials: M
authors.lastname: Tijssen
authors.affiliation: Technical Medicine, University of Twente, Enschede, The Netherlands.
authors.forename: Sytse de
authors.initials: Sd
authors.lastname: Jong
authors.affiliation: Technical Medicine, University of Twente, Enschede, The Netherlands.
authors.forename: Timon
authors.initials: T
authors.lastname: Fabius
authors.affiliation: Department of Urology, Radboud University Medical Center, Nijmegen, The Netherlands.
authors.forename: Johnny
authors.initials: J
authors.lastname: Tromp
authors.affiliation: Department of Urology, Radboud University Medical Center, Nijmegen, The Netherlands.
authors.forename: Hendrikje van
authors.initials: Hv
authors.lastname: Breda
authors.affiliation: Department of Cardiology, Radboud University Medical Center, Nijmegen, The Netherlands.
authors.forename: Joep
authors.initials: J
authors.lastname: Smeets
authors.affiliation: Department of Urology, Radboud University Medical Center, Nijmegen, The Netherlands.
authors.forename: Wout
authors.initials: W
authors.lastname: Feitz
authors.affiliation: Department of Urology, Radboud University Medical Center, Nijmegen, The Netherlands.
authors.forename: John
authors.initials: J
authors.lastname: Heesakkers
keywords: Electrovesicography; Urinary Bladder; Urodynamics