k7cm阈值管理.ppt

700 Series 阈值管理 Medtronic Internal Use Only 阈值管理?临床问题: 通过定期安全的阈值测试但不影响起搏器寿命,减少病人随访次数;? Kappa 解决方法: 一种自动的阈值管理功能,同时对心内膜导线无任何限制?优势: 当起搏阈值升高时保证安全,当起搏阈值降低时延长电池寿命 Medtronic Internal Use Only 阈值管理-程控选择? Monitor Only, Adaptive, Off (Shipped Adaptive) ?目标输出/脉宽安全范围(1,, ,2,, ,2,,3,4,5) ?最小的可调整的输出/脉宽( ) ?阈值测试的周期?急性期 112 天–最多可调整为最初的 120 天*色体字为出厂默认值 Medtronic Internal Use Only PTS 时暂停的功能?感知保障?频率骤降反应检测? AV 调节 (AV 搜索, RAAV) ? NCAP operation ?导线监察?自动-PVARP/ 感知器-变化的 PVARP ?心室安全起搏 Medtronic Internal Use Only PTS 起搏周期支持事件的输出为程控的电压和脉宽测试脉冲的输出为测试值 S upport events at operating voltage & pulse width Test Paces at current test amplitude and pulse width Every Test Pace followed by a Backup pace 110 ms later Backup paces at programmed voltage and ms PW Support Events Test Pace Backup Pace Medtronic Internal Use Only PTS –基强度和时值 Amplitude (Volts) Pulse Width (ms) Strength-Duration Curve ??????? The result of a Pacing Threshold Search is an approximation of the patient ’ s current Chronaxie and Rheobase , from which the Strength-Duration Curve can be estimated. Chronaxie Approximation Rheobase Approximation ?? ? Medtronic Internal Use Only 阈值管理在最初 16 周?植入时: 临床可选择初始输出 (or, nominal = V, ms) ?急性期: 在“X”天(nominal = 112 days), 输出不允许调整低于出厂设置但如果需要输出可以提高 Medtronic Internal Use Only Capture Management: In-Clinic Test Medtronic Internal Use Only CM 电压趋势 Medtronic Internal Use Only CM 详情