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Implantable cardiac device for reduced phrenic nerve stimulation
专利权人:
Alok S. Sathaye
发明人:
Alok S. Sathaye
申请号:
US12154410
公开号:
US08185202B2
申请日:
2008.05.22
申请国别(地区):
US
年份:
2012
代理人:
摘要:
Methods and devices for reducing phrenic nerve stimulation of cardiac pacing systems involve delivering a pacing pulse to a ventricle of a heart. A transthoracic impedance signal is sensed, and a deviation in the signal resulting from the pacing pulse may be used to determine phrenic nerve stimulation. Methods may further involve detecting the phrenic nerve stimulation from the pacing pulse by delivering two or more pacing pulse to the ventricle of the heart, and determining a temporal relationship. A pacing vector may be selected from the two or more vectors that effects cardiac capture and reduces the phrenic nerve stimulation. A pacing voltage and/or pulse width may be selected that provides cardiac capture and reduces the phrenic nerve stimulation. In other embodiments, a pacing pulse width and a pacing voltage may be selected from a patient's strength-duration curve that effects cardiac capture and reduces the phrenic nerve stimulation.
来源网站:
中国工程科技知识中心
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