Temperature-controlled ablation of the mitral isthmus line using the novel DiamondTemp ablation system
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Temperature-controlled ablation of the mitral isthmus line using the novel DiamondTemp ablation system. / Rottner, Laura; My, Ilaria; Schleberger, Ruben; Moser, Fabian; Moser, Julia; Kirchhof, Paulus; Ouyang, Feifan; Rillig, Andreas; Metzner, Andreas; Reissmann, Bruno.
In: FRONT CARDIOVASC MED, Vol. 9, 1046956, 2022.Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review
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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 -