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除颤仪使用要点全解析-PPT模板-分享

  • 2026-04-22 15:46:15
除颤仪使用要点全解析-PPT模板-分享

一、适应证:哪些情况需要除颤

除颤仪适用于可除颤心律,主要包括心室颤动和无脉性室性心动过速。这两种心律失常发生时,心脏虽然有电活动但无法形成有效收缩,必须通过电击除颤才能恢复正常节律。需要特别强调的是,心脏停搏和无脉电活动属于非可除颤心律,严禁进行除颤操作,这一点在2025年指南中被再次明确强调。

二、设备分类:手动除颤仪与AED

除颤仪主要分为两大类。手动除颤仪需要操作者具备专业判断能力,可选择同步除颤或非同步除颤模式,适用于医疗机构的专业人员使用。自动体外除颤器简称AED,设计为傻瓜式操作,通过内置算法自动分析心律并提示放电,适用于院外急救及非专业人员使用。两种设备的工作原理相同,但适用场景和操作要求有所差异。

三、操作前准备:三个关键确认

使用除颤仪前必须完成三项关键确认。首先是设备状态检查,确认除颤仪电量充足、备用心律、导电糊或电极片完好无损。其次是环境安全确认,确保现场无易燃易爆物质、操作者与患者均未接触金属导体。最后是患者状态评估,确认患者为无意识、无自主呼吸或呼吸异常,心电图显示可除颤心律。

四、电极放置:位置选择有讲究

电极放置位置直接影响除颤效果。标准的前侧位是临床最常用的方式,将一个电极置于右锁骨下方、胸骨右缘,另一个置于左腋前线第五肋间。对于特定情况如室性心动过速或体内金属植入物患者,可采用前后位放置,一个电极置于左肩胛下角区,另一个置于胸骨左缘。

五、能量选择:按波形和人群确定

能量选择需要根据除颤仪波形和患者年龄进行调整。双相波除颤仪成人首次能量建议120至200焦耳,单相波除颤仪则需360焦耳。儿童患者首次除颤建议2至4焦耳每公斤体重,低于成人标准。无论采用何种能量,首次除颤后如需继续除颤,后续能量通常与首次相同或略高。

六、标准操作流程:七步完成除颤

标准操作流程分为七个步骤。第一步开机,红色开机键或旋转开关启动设备。第二步模式选择,根据心律选择同步或非同步模式。第三步电极放置,按照规范位置贴放电极或放置电极板。第四步能量设置,根据患者情况调整到合适能量值。第五步充电,按下充电键等待设备就绪。第六步清场,大声呼喊确认所有人员离开患者身体及床沿。第七步放电,双手同时按下放电键完成除颤。

七、放电后处理:衔接CPR至关重要

放电完成后应立即恢复胸外按压,不应有任何停顿。按照30比2的比例进行心肺复苏,即30次胸外按压后进行2次人工呼吸。完成5个循环的CPR后,重新评估患者心律和循环情况。这个环节是除颤效果得以延续的关键,必须严格执行。

八、特殊情况处理:特殊人群有讲究

对于植入心脏起搏器或ICD的患者,电极片应避开植入部位至少8厘米,避免影响起搏器功能或造成起搏器损坏。儿童患者应优先使用儿科电极片或调整能量设置,2025年指南特别强调了儿童除颤的规范操作。妊娠女性患者除颤没有绝对禁忌,除颤时注意保护腹部。

九、使用禁忌:这些情况不能除颤

必须严格掌握除颤的禁忌症。心脏停搏、心室静止、无脉电活动等非可除颤心律严禁除颤,否则可能造成心肌损伤甚至死亡。此外,患者胸壁有导电糊或电极片未正确连接时禁止放电,以免影响除颤效果或造成皮肤灼伤。

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  1. CONNECT:[ UseTime:0.000498s ] mysql:host=127.0.0.1;port=3306;dbname=h_67808;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001030s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000326s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000276s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000745s ]
  6. SELECT * FROM `set` [ RunTime:0.000231s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000729s ]
  8. SELECT * FROM `article` WHERE `id` = 465106 LIMIT 1 [ RunTime:0.000577s ]
  9. UPDATE `article` SET `lasttime` = 1776847791 WHERE `id` = 465106 [ RunTime:0.000929s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.000269s ]
  11. SELECT * FROM `article` WHERE `id` < 465106 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000475s ]
  12. SELECT * FROM `article` WHERE `id` > 465106 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000393s ]
  13. SELECT * FROM `article` WHERE `id` < 465106 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000618s ]
  14. SELECT * FROM `article` WHERE `id` < 465106 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000624s ]
  15. SELECT * FROM `article` WHERE `id` < 465106 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000762s ]
0.085327s