Surgery – Truss – Pad
Patent
1992-08-28
1994-05-17
Kamm, William E.
Surgery
Truss
Pad
128898, A61N 100
Patent
active
053118731
ABSTRACT:
Body surface potential map (BSPM) pace-mapping is a system and method that can be used in medicine to localize with precision the site of origin of abnormal cardiac electrical activity and to guide the positioning of a catheter over this site of origin, such as the site of ventricular preexcitation in patients with the Wolff-Parkinson-White syndrome or the focus of ectopic activity in patients with tachycardia. Body surface potential distributions are measured with a large number of electrodes, e.g. 24 to 128, distributed over the entire torso surface. The electrical signals are first amplified, converted into digital data and treated to remove electrical or muscle artifacts. Data recorded during abnormal activation (reference beat) are aligned with data recorded during cardiac pacing (paced beat) so as to maximize the average value of the correlation coefficient between the reference and the paced potential distributions during a preset time interval following the beginning of the QRS complex. Reference and paced maps showing color-coded isopotential contour lines are displayed side by side for the same time instant. Visual analysis of these maps according to previously published criteria determines the relative position of the pacing catheter with respect to the focus of abnormal activation, and gives information so as to guide the catheter toward the focus.
REFERENCES:
patent: 4641649 (1987-02-01), Walinsky et al.
patent: 4742831 (1988-10-01), Silvian
patent: 4751931 (1988-06-01), Briller et al.
patent: 4890630 (1990-01-01), Kroll et al.
patent: 4940058 (1990-07-01), Taff et al.
patent: 4974598 (1990-12-01), John
patent: 5069215 (1991-12-01), Jadvar et al.
patent: 5083565 (1992-01-01), Parins
W. M. Jackman et al, "Catheter Ablation of Accessory Atrioventricular Pathways, Wolff-Parkinson-White Syndrome, by Radiofrequency Current", New England Journal of Medicine, 324:1605, 1991.
L. S. Klein et al, "Radiofrequency Catheter Ablation of Ventricular Tachycardia in Patients Without Structural Heart Disease", 85:1666, 1992.
Benson et al, "Localization of the Site of Ventricular Preexcitation with Body Surface Potential Maps in Patients with the Wolff-Parkinson-White Syndrome", Circulation, 65:1259, 1982.
Nadeau et al, "Localization of Preexcitation Sites in the Wolff-Parkinson-White Syndrome by Body Surface Potential Mapping and a Single Moving Dipole Representation", In Electrocardiographic Body Surface Potential Mapping Eds R. T. van Dam, A. van Costerom, Martinus Nijhoff, pp. 95-98, 1986).
Sippens-Groenewegen et al, "Body Surface Mapping of Ectopic Left and Right Ventricular Activation, ORS Spectrum in Patients without Structural Heart Disease", Circulation, 82:879, 1990.
Josephson et al, "Ventricular Activation During Ventricular Endocardial Pacing. II. Role of Pace Mapping to Localize Origin of Ventricular Tachycardia", Am J Cardiol 50:11, 1982.
Dubuc Marc
Nadeau Reginald
Savard Pierre
Ecole Polytechnique
Getzow Scott M.
Kamm William E.
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