TY  - CHAP
U1  - Konferenzveröffentlichung
A1  - Ismer, Bruno
A1  - Rösch, Lena
A1  - Kroll, Katharina
A1  - Heinke, Matthias
A1  - Körber, Thomas
A1  - Weber, Frank
A1  - Peters, Ralf
A1  - Nienaber, Christoph A.
T1  - Left ventricular tip versus superior vena cava coil electrogram – a new approach for automatic AV delay optmization in cardiac resynchronization
T2  - Biomedical Engineering / Biomedizinische Technik
N2  - AV delay (AVD) optimization can improve hemodynamics and avoid nonresponding to cardiac resynchronization therapy (CRT). AVD can be approximated by the sum of the individual implant-related interatrial conduction interval and a mean electromechanical interval of about 50ms. We searched for methods to facilitate automatic, implant-based AV delay optimization. In 25 patients (19m, 6f, age: 65±8yrs.) with Medtronic Insync III Marquis CRT-D series systems and left ventricular electrode at lateral or posterolateral wall, we determined interatrial conduction intervals by telemetric left ventricular tip versus superior vena cava coil electrogram (LVCE). Compared with esophageal measurements, the duration of optimal AV delay by LVCE showed good correlation (k=0.98, p=0.01) with a difference of 1.5±4.9ms, only. Therefore, LVCE is feasible to determine interatrial conduction intervals in order to automate AV delay optimization in CRT-D pacing promising increased accuracy compared to other algorithms.
Y1  - 2010
SN  - 0013-5585 (Print)
SS  - 0013-5585 (Print)
SN  - 1862-278X (Online)
SS  - 1862-278X (Online)
U6  - https://doi.org/10.1515/bmt.2010.709
DO  - https://doi.org/10.1515/bmt.2010.709
VL  - 55
IS  - S1
SP  - 9
EP  - 10
PB  - Walter de Gruyter
CY  - Berlin, Boston
ER  -