Temperature-controlled ablation of the mitral isthmus line using the novel DiamondTemp ablation system

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@article{b384b63e02774fb2abd1ae1167a3459a,
title = "Temperature-controlled ablation of the mitral isthmus line using the novel DiamondTemp ablation system",
abstract = "BACKGROUND: The novel DiamondTemp{\texttrademark} (DT)-catheter (Medtronic{\textregistered}) was designed for high-power, short-duration ablation in a temperature-controlled mode.AIM: To evaluate the performance of the DT-catheter for ablation of the mitral isthmus line (MIL) using two different energy dosing strategies.MATERIALS AND METHODS: Twenty patients with recurrence of atrial fibrillation (AF) and/or atrial tachycardia (AT) following pulmonary vein (PV) isolation were included. All patients underwent reisolation of PVs in case of electrical reconnection and ablation of a MIL using the DT-catheter. Application durations of 10 (group A, n = 10) or 20 s (group B, n = 10) were applied. If bidirectional block was not reached with endocardial ablation, additional ablation from within the coronary sinus (CS) was conducted.RESULTS: In 19/20 (95%) patients, DT ablation of the MIL resulted in bidirectional block. Mean procedure and fluoroscopy time, and dose area product did not differ significantly between the two groups. In group B, fewer radiofrequency applications were needed to achieve bidirectional block of the MIL when compared to group A (26 ± 12 vs. 42 ± 17, p = 0.04). Ablation from within the CS was performed in 8/10 patients (80%) of group A and in 5/10 (50%) patients of group B (p = 0.34). No major complication occurred.CONCLUSION: Mitral isthmus line ablation with use of the DT-catheter is highly effective and safe. Longer radiofrequency-applications appear to be favorable without compromising safety.",
author = "Laura Rottner and Ilaria My and Ruben Schleberger and Fabian Moser and Julia Moser and Paulus Kirchhof and Feifan Ouyang and Andreas Rillig and Andreas Metzner and Bruno Reissmann",
note = "Copyright {\textcopyright} 2022 Rottner, My, Schleberger, Moser, Moser, Kirchhof, Ouyang, Rillig, Metzner and Reissmann.",
year = "2022",
doi = "10.3389/fcvm.2022.1046956",
language = "English",
volume = "9",
journal = "FRONT CARDIOVASC MED",
issn = "2297-055X",
publisher = "Frontiers Media S. A.",

}

RIS

TY - JOUR

T1 - Temperature-controlled ablation of the mitral isthmus line using the novel DiamondTemp ablation system

AU - Rottner, Laura

AU - My, Ilaria

AU - Schleberger, Ruben

AU - Moser, Fabian

AU - Moser, Julia

AU - Kirchhof, Paulus

AU - Ouyang, Feifan

AU - Rillig, Andreas

AU - Metzner, Andreas

AU - Reissmann, Bruno

N1 - Copyright © 2022 Rottner, My, Schleberger, Moser, Moser, Kirchhof, Ouyang, Rillig, Metzner and Reissmann.

PY - 2022

Y1 - 2022

N2 - BACKGROUND: The novel DiamondTemp™ (DT)-catheter (Medtronic®) was designed for high-power, short-duration ablation in a temperature-controlled mode.AIM: To evaluate the performance of the DT-catheter for ablation of the mitral isthmus line (MIL) using two different energy dosing strategies.MATERIALS AND METHODS: Twenty patients with recurrence of atrial fibrillation (AF) and/or atrial tachycardia (AT) following pulmonary vein (PV) isolation were included. All patients underwent reisolation of PVs in case of electrical reconnection and ablation of a MIL using the DT-catheter. Application durations of 10 (group A, n = 10) or 20 s (group B, n = 10) were applied. If bidirectional block was not reached with endocardial ablation, additional ablation from within the coronary sinus (CS) was conducted.RESULTS: In 19/20 (95%) patients, DT ablation of the MIL resulted in bidirectional block. Mean procedure and fluoroscopy time, and dose area product did not differ significantly between the two groups. In group B, fewer radiofrequency applications were needed to achieve bidirectional block of the MIL when compared to group A (26 ± 12 vs. 42 ± 17, p = 0.04). Ablation from within the CS was performed in 8/10 patients (80%) of group A and in 5/10 (50%) patients of group B (p = 0.34). No major complication occurred.CONCLUSION: Mitral isthmus line ablation with use of the DT-catheter is highly effective and safe. Longer radiofrequency-applications appear to be favorable without compromising safety.

AB - BACKGROUND: The novel DiamondTemp™ (DT)-catheter (Medtronic®) was designed for high-power, short-duration ablation in a temperature-controlled mode.AIM: To evaluate the performance of the DT-catheter for ablation of the mitral isthmus line (MIL) using two different energy dosing strategies.MATERIALS AND METHODS: Twenty patients with recurrence of atrial fibrillation (AF) and/or atrial tachycardia (AT) following pulmonary vein (PV) isolation were included. All patients underwent reisolation of PVs in case of electrical reconnection and ablation of a MIL using the DT-catheter. Application durations of 10 (group A, n = 10) or 20 s (group B, n = 10) were applied. If bidirectional block was not reached with endocardial ablation, additional ablation from within the coronary sinus (CS) was conducted.RESULTS: In 19/20 (95%) patients, DT ablation of the MIL resulted in bidirectional block. Mean procedure and fluoroscopy time, and dose area product did not differ significantly between the two groups. In group B, fewer radiofrequency applications were needed to achieve bidirectional block of the MIL when compared to group A (26 ± 12 vs. 42 ± 17, p = 0.04). Ablation from within the CS was performed in 8/10 patients (80%) of group A and in 5/10 (50%) patients of group B (p = 0.34). No major complication occurred.CONCLUSION: Mitral isthmus line ablation with use of the DT-catheter is highly effective and safe. Longer radiofrequency-applications appear to be favorable without compromising safety.

U2 - 10.3389/fcvm.2022.1046956

DO - 10.3389/fcvm.2022.1046956

M3 - SCORING: Journal article

C2 - 36505349

VL - 9

JO - FRONT CARDIOVASC MED

JF - FRONT CARDIOVASC MED

SN - 2297-055X

M1 - 1046956

ER -