TY  - JOUR
U1  - Zeitschriftenartikel, wissenschaftlich - nicht begutachtet (unreviewed)
A1  - Ehret, Karl
A1  - Heinke, Matthias
A1  - Hörth, Johannes
T1  - Electrode Model and Simulation of Catheter Ablation of Supraventricular Tachycardia
T2  - Acta Scientific Medical Sciences
N2  - The high frequency (HF) catheter ablation is the gold standard for the therapy of many cardiac tachyarrhythmias, such as atrioventricular node re-entry tachycardia (AVNRT), atrioventricular re-entry tachycardia (AVRT) or atrial flutter (AFL). The aim of the study was to simulate the HF ablation of AVNRT, AVRT, AFL and its heat propagation in reference to the supplied power with different electrode material and electrode size. The modeling and simulation were performed with the thermal and electromagnetic simulation software CST® (Computer Simulation Technology, Darmstadt).  The modeling and simulation were carried out using ablation catheters with 4 mm tip electrode and 8 mm tip electrode with different electrode materials. Both electrode types were made of platinum and gold respectively. For the measurement of the heat propagation in the heart tissue, the catheters were integrated in the Offenburg heart rhythm model. The HF ablation procedures were performed with the 4 mm platinum tip electrode, with an application duration of 45 seconds and a power output of 40 watts. The HF ablation of the atrioventricular node slow pathway produced a maximum temperature of 66.33 °C. The Kent bundle HF ablation in the left atrium achieved a maximum temperature of 67.14 °C. The HF ablation of the right atrial isthmus resulted 65.96 °C. The 8 mm distal platinum tip electrode and a power output of 60 watts reached 72.85 °C. The 8 mm distal gold tip electrode and a power output of 60 watt reached 64.66 °C, due to the improved thermal conductivity of gold. Virtual heart and ablation electrode models allow the static and dynamic simulation of HF ablation with different electrode material and electrode size. The 3D simulation of the temperature profile may be used to optimize the AVNRT, AVRT and AFL HF ablation.
KW  - Catheter Ablation
KW  - HF Ablation
KW  - Supraventricular Tachycardia
KW  - Electrode Model
KW  - 3d Heart Simulation
KW  - Catheter Ablation
KW  - HF Ablation
KW  - Supraventricular Tachycardia
KW  - Electrode Model
KW  - 3d Heart Simulation
Y1  - 2018
UR  - https://actascientific.com/ASMS/pdf/ASMS-02-0143.pdf
VL  - 2
IS  - 9
SP  - 19
EP  - 22
PB  - Acta Scientific
ER  - 
TY  - JOUR
U1  - Zeitschriftenartikel, wissenschaftlich - nicht begutachtet (unreviewed)
A1  - Ismer, Bruno
A1  - Härtig, Johannes
A1  - Heinke, Matthias
A1  - Hörth, Johannes
A1  - Melichercik, Juraj
T1  - Detection of Adverse Timing in Cardiac Resynchronization
T2  - Journal of Atrial Fibrillation
KW  - Herzschrittmacher
Y1  - 2013
UR  - http://www.jafib.com/published/published.php?cont=va_issue&abstract=127
IS  - Special Issue Venice Arrhythmias
SP  - 136
ER  - 
TY  - JOUR
U1  - Zeitschriftenartikel, wissenschaftlich - nicht begutachtet (unreviewed)
A1  - Rotter, Kirsten-Maria
A1  - Ismer, Bruno
A1  - Heinke, Matthias
ED  - Lévy, Samuel
T1  - Esophageal left ventricular electrogram to measure interventricular and intra-left-ventricular conduction delay in CRT patients
T2  - Journal of Interventional Cardiac Electrophysiology
Y1  - 2010
UR  - http://link.springer.com/journal/10840/27/3#page-2
SN  - 1383-875X
DO  - https://dx.doi.org/10.1007/s10840-010-9483-7
VL  - 72
IS  - 3
SP  - 197
EP  - 198
ER  - 
TY  - JOUR
U1  - Zeitschriftenartikel, wissenschaftlich - nicht begutachtet (unreviewed)
A1  - Heinke, Matthias
A1  - Ismer, Bruno
A1  - Kühnert, Helmut
T1  - Optimal biventricular pacing delay and electrical interventricular conduction delay in cardiac resynchronization therapy
T2  - Europace : the European journal of pacing, arrhythmias and cardiac electrophysiology
N2  - It is not clear whether cardiac resynchronization therapy (CRT) should only be optimized at rest or whether it is necessary to perform CRT optimization during exercise. Our study aims to answer this question by using an inert gas rebreathing method (Innocor®).
Y1  - 2012
UR  - http://europace.oxfordjournals.org/content/14/2/249.full?sid=30a8e66e-cb22-45af-9e5c-530f3b71c227
SN  - 1099-5129
DO  - https://dx.doi.org/10.1093/europace/eur296
VL  - 14
IS  - 2
SP  - 249
EP  - 253
ER  - 
TY  - JOUR
U1  - Zeitschriftenartikel, wissenschaftlich - nicht begutachtet (unreviewed)
A1  - Heinke, Matthias
A1  - Ismer, Bruno
A1  - Kühnert, Helmut
T1  - Transesophageal left ventricular electrogram-recording and temporary pacing to improve patient selection for cardiac resynchronization.
T2  - Medical & biological engineering & computing : MBEC ; the journal of the International Federation for Medical and Biological Engineering
N2  - Cardiac resynchronization therapy (CRT) with biventricular pacing (BV) is an established therapy for heart failure (HF) patients with inter- and intraventricular conduction delay. The aim of this pilot study was to test the feasibility of both transesophageal measurement of left ventricular (LV) electrical delay and transesophageal LV pacing prior to implantation, to better select patients for CRT.
Y1  - 2011
SN  - 0140-0118 (Print)
SN  - 1741-0444 (Elektronisch)
DO  - https://dx.doi.org/10.1007/s11517-011-0767-6
VL  - 49
IS  - 8
SP  - 851
EP  - 858
ER  -