Echocardiography versus intracardiac electrocardiography-based optimization for cardiac resynchronization therapy
| Autor: | A. Liadski, Oliver Bruder, Christoph Naber, Christoph J Jensen, Heinrich Wieneke, M. Bell, Georg V. Sabin, B. Küpper |
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| Rok vydání: | 2011 |
| Předmět: |
Male
medicine.medical_specialty Heart Ventricles medicine.medical_treatment Bundle-Branch Block Cardiac resynchronization therapy Hemodynamics Nyha class Intracardiac injection Cardiac Resynchronization Therapy Electrocardiography Internal medicine medicine Humans Cardiac Resynchronization Therapy Devices Heart Atria cardiovascular diseases Aged Heart Failure Ejection fraction medicine.diagnostic_test business.industry Signal Processing Computer-Assisted Equipment Design Gold standard (test) Middle Aged medicine.disease Electrodes Implanted Survival Rate Treatment Outcome Echocardiography Heart failure Exercise Test cardiovascular system Cardiology Female Cardiology and Cardiovascular Medicine business Algorithms Software Follow-Up Studies |
| Zdroj: | Herz. 36:592-599 |
| ISSN: | 1615-6692 0340-9937 |
| DOI: | 10.1007/s00059-011-3507-7 |
| Popis: | Optimization of AV and VV delay programming has been shown to be essential for the success of cardiac resynchronization therapy (CRT). Acute hemodynamic improvement can be obtained by intracardiac electrocardiogram (IEGM)-based optimization. The aim of the present study was to evaluate whether this IEGM-based algorithm is comparable to the current gold standard of echocardiography. After device implantation patients with standard criteria for CRT, AV and VV delay programming was either optimized by an IEGM-based algorithm (IEGM group, n = 24) or by echocardiography (echo group, n = 24). Cardiopulmonary exercise capacity was assessed after 3 and 12 months on the basis of NYHA class and the 6-min-walk test. Left ventricular ejection fraction was evaluated by echocardiography. In both groups there was a significant decrease in NYHA class and a significant increase in 6-min-walk distance and ejection fraction after 3 and 12 months. After 12 months there was no significant difference in the proportion of responders, NYHA class and 6-min-walk distance between the IEGM the echo group. The present data show that a sustained improvement of cardiopulmonary exercise capacity can be obtained by optimizing CRT patients on the basis of an IEGM algorithm. The comparable results for cardiopulmonary exercise parameters suggest that this new method might become an important tool for adjusting CRT programming in daily practice. |
| Databáze: | OpenAIRE |
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