（优质课件）起搏器植入及术后护理.ppt

心脏传导系统复习 1 起搏器的定义 2 起搏器植入后的护理 4 植入的适应症及方法 3 总 结 * 思考题： 请为病例中病人王女士制定一份详尽的术后护理计划。 * Thank you for your attention! * * Student Notes学员注释 The conduction system in a normal heart is comprised of and operates in the following way: 正常心脏的传导系统的组成和运作模式： The sinus node, located in the upper right atrium (known as the heart’s ‘Natural Pacemaker’), has ‘automaticity’, which will be discussed later. The sinus node’s rate of automaticity is normally faster than all other parts of the heart, and therefore, dictates the rate at which the entire heart beats. This is known as “Sinus Rate.” Its resting rate is usually between 60-80 bpm in an adult, but it responds to metabolic demands, changing its rate as the need for oxygenated blood changes, for example,` in response to exercise, stress, hormones, etc. 窦房结，位于右心房上部（被称之为心脏的“天然起搏器”），具有自律性。关于这一点，我们以后会讨论到。窦房结的自律心率通常比心脏其它所有部位的自律性都要快，因此，控制决定了整个心脏跳动的心率快慢。被称之为“窦性心率”，成年人休息时心率大约在每分钟60~80次，可以根据代谢需求而改变。如果氧和血液需求发生变化，心率就发生改变，例如，运动、应激、激素分泌等等情况。 Instructor Notes教员注释 Auto-animated slide自动演示幻灯 * Impulses in a patient with diseased heart tissue may be: Intermittent Irregular Not generated at all At an inappropriate rate for the patient抯 metabolic demand. Block can occur at any point Within the SA node, AV node, His bundle or distal conduction system. 心脏起搏器植入及术后护理 pacemaker implantation and postoperative care * 心脏传导系统复习 1 起搏器的定义 2 起搏器植入后的护理 4 植入的适应症及方法 3 目 录 * 窦房结 (SA Node) 心脏的“天然起搏器” 房室结 (AV Node) 接受来自窦房结的脉冲 将脉冲传递到希氏束-浦肯野系统 希氏束 将脉冲传导至心室 浦肯野纤维网 束支分支和浦肯野纤维 使脉冲在心室内扩散，引起收缩 1-心脏传导系统复习 * 1-心脏传导系统复习 * * 心脏传导系统复习 1 起搏器的定义 2 起搏器植入的护理 4 植入的适应症及方法 3 目 录 * 是一种植入于人体内的医用电子仪器，通过发放一定形式的电脉冲,刺激心脏跳动，从而恢复心脏的泵血功能. 由脉冲发生器和起搏电极导线组成。 永久起搏器的特征： 大小：如男式手表 重量：20-