Body Surface Map and Location of Origin of Ventricular Tachycardia. Comparison with Epicardial Map

Klersy, Catherine; Viganò, M; Martinelli, L.; Chimienti, M; Salerno, J. A.

doi:10.1007/978-94-009-4303-2_14

Cited by 2 publications

(2 citation statements)

References 5 publications

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“…Early studies by Ushijima et al (1985), Hayashi et al (1988), Kamakura et al (1986), Klersy et al (1986) and Savard et al (1987) were limited, because they focused only on specific features (such as a location of minimum with an amplitude more negative than −0.15 mV) of BSPMs at a single instant of time. SippensGroenewegen et al (1990) subdivided the left ventricular (LV) and right ventricular (RV) endocardium into 38 segments (with a mean area resolution of 3.3 ± 1.4 cm 2 in the LV, and 6.7 ± 2.9 cm 2 in the RV), and developed a classification based on QRS-integral maps that would discriminate between the activation sequences initiated at those segments.…”

Section: Introductionmentioning

confidence: 99%

Value of simulated body surface potential maps as templates in localizing sites of ectopic activation for radiofrequency ablation

Hren

Horáček

1997

Physiol. Meas.

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Body surface potential maps recorded during catheter pace mapping can facilitate the localization of the site of origin of ventricular tachycardia. In this study, we investigated the value of a realistic computer model of the human ventricular myocardium in generating body surface potential maps as templates for identifying sites of ectopic activation. Our model features an anatomically accurate geometry and an anisotropy due to transmural fibre rotation, that were reconstructed with a spatial resolution of 0.5 mm. It simulates the electrotonic interactions of cardiac cells by solving a nonlinear parabolic partial differential equation, but it behaves as a cellular automaton when the transmembrane potential exceeds the threshold value. We successfully validated our model by comparing the simulated activation sequences--described by isochronal maps, epicardial potential maps and body surface potential maps--with the measured sequences of epicardial and body surface maps reported in the literature. By systematically pacing the left ventricular and right ventricular endocardial surfaces in our ventricular model, we generated a database of 155 QRS-integral maps, which provides a high-resolution reference frame for localizing distinct endocardial pacing sites. This database promises to be a useful tool in improving the performance of catheter pace mapping used in combination with body surface potential mapping. Overall, the results demonstrate that our computer model of the human ventricular myocardium is well suited for complementing a database of QRS-integral maps obtained during clinical pace mapping and can help enhance the efficacy of the ablative treatment of ventricular arrhythmias.

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Section: Introductionmentioning

confidence: 99%

Value of simulated body surface potential maps as templates in localizing sites of ectopic activation for radiofrequency ablation

Hren

Horáček

1997

Physiol. Meas.

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 99%

Scientific foundations of powerful photodissociation lasers (history of research in the 1960s at the Division of Quantum Radiophysics of the P N Lebedev Physics Institute)

Zuev

Katulin

1997

Quantum Electron.

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Body surface potential maps recorded during catheter pace mapping can facilitate the localization of the site of origin of ventricular tachycardia. In this study, we investigated the value of a realistic computer model of the human ventricular myocardium in generating body surface potential maps as templates for identifying sites of ectopic activation. Our model features an anatomically accurate geometry and an anisotropy due to transmural fibre rotation, that were reconstructed with a spatial resolution of 0.5 mm. It simulates the electrotonic interactions of cardiac cells by solving a nonlinear parabolic partial differential equation, but it behaves as a cellular automaton when the transmembrane potential exceeds the threshold value. We successfully validated our model by comparing the simulated activation sequences-described by isochronal maps, epicardial potential maps and body surface potential maps-with the measured sequences of epicardial and body surface maps reported in the literature. By systematically pacing the left ventricular and right ventricular endocardial surfaces in our ventricular model, we generated a database of 155 QRS-integral maps, which provides a high-resolution reference frame for localizing distinct endocardial pacing sites. This database promises to be a useful tool in improving the performance of catheter pace mapping used in combination with body surface potential mapping. Overall, the results demonstrate that our computer model of the human ventricular myocardium is well suited for complementing a database of QRS-integral maps obtained during clinical pace mapping and can help enhance the efficacy of the ablative treatment of ventricular arrhythmias.

show abstract

Body Surface Map and Location of Origin of Ventricular Tachycardia. Comparison with Epicardial Map

Cited by 2 publications

References 5 publications

Value of simulated body surface potential maps as templates in localizing sites of ectopic activation for radiofrequency ablation

Value of simulated body surface potential maps as templates in localizing sites of ectopic activation for radiofrequency ablation

Scientific foundations of powerful photodissociation lasers (history of research in the 1960s at the Division of Quantum Radiophysics of the P N Lebedev Physics Institute)

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