发明名称 |
Ventricular rate stabilization with cardiac resynchronization |
摘要 |
An implantable medical device (IMD) selectively switches to a more hemodynamically beneficial pacing mode upon detection of ventricular dysynchrony and/or reduced hemodynamic function during delivery of pacing pulses according to a ventricular rate stabilization algorithm. For example, in some embodiments of the invention, an IMD switches from right ventricular pacing according to a ventricular rate stabilization algorithm, to biventricular pacing according to the algorithm. The biventricular pacing can be provided according to a cardiac resynchronization therapy mode, and can involve use of an intraventricular delay between delivery of pacing pulses to the respective ventricles to improve hemodynamic functioning of a heart. The IMD monitors an electrogram signal to detect ventricular dysynchrony and/or decreased hemodynamic performance of the ventricles. The IMD can detect ventricular dysynchrony based on elongated QRS complex widths. The IMD can detect decreased hemodynamic performance based on shortened Q-T intervals and/or decreased ventricular evoked response amplitudes.
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申请公布号 |
US2004215257(A1) |
申请公布日期 |
2004.10.28 |
申请号 |
US20030424583 |
申请日期 |
2003.04.25 |
申请人 |
VAN OORT GEESKE;VAN HOVE J. W. |
发明人 |
VAN OORT GEESKE;VAN HOVE J. W. |
分类号 |
A61N1/368;(IPC1-7):A61N1/362 |
主分类号 |
A61N1/368 |
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