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Medical-Surgical Nursing
运动压力测试
运动压力测试
JoVE Core
Medical-Surgical Nursing
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JoVE Core Medical-Surgical Nursing
Exercise Stress Test

14.7: 运动压力测试

1,127 Views
01:26 min
January 17, 2025
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Please note that some of the translations on this page are AI generated. Click here for the English version.

Overview

介绍

运动压力测试,通常称为跑步机测试,是一种用于评估心血管功能和诊断心脏疾病的无创程序。

定义

运动压力测试通过跑步机或固定自行车测量心脏对运动的反应。胸部电极通过心电图记录心脏的电活动,同时定期监测血压。

目的

  1. 运动压力测试的主要目的是发现冠状动脉疾病(CAD)的症状并评估现有心脏病的严重程度。
  2. 它还有助于确定患者的安全运动水平,并评估心脏治疗效果。

适应症

  1. 运动压力测试适用于患有胸痛、心绞痛恶化、既往心脏病发作或接受过血管成形术或搭桥手术的患者。
  2. 它还用于评估心脏瓣膜功能,并监测具有心脏病风险因素的患者。

术前护理

患者被告知测试程序及其目的,包括监测设备的使用以及症状的报告。护士指导患者:

  1. 穿着舒适的衣服和鞋子。
  2. 测试前至少禁食三小时。
  3. 24小时内避免咖啡因、酒精和烟草。

某些药物(如β受体阻滞剂、钙通道阻滞剂和洋地黄)可能需要在测试前48小时暂停。患者必须咨询医疗保健提供者以调整用药。

护士通过清洁皮肤并可能剃除小块区域以确保电极更好接触。获取静息仰卧位标准12导联心电图,以与之前的心电图进行比较。

测试期间的护理

将电极放置在患者胸部以记录心脏活动。在开始运动前,获取基线心率、血压和心电图读数。患者在跑步机或固定自行车上进行逐渐增加强度的身体活动。在整个运动阶段,监测以下参数:

  1. 心电图 (ECG):检测缺血性变化、心律失常和其他异常。
  2. 心率:监测心率是否达到目标水平(最大心率的85%,即220减去年龄),并观察运动引起的变化。
  3. 血压:监测心血管对运动的反应。
  4. 症状:观察是否出现胸痛、头晕、气短或腿抽筋。
  5. 身体外观:监测肤色、出汗情况和整体状况。
  6. 自觉用力:患者主观报告的用力感和疲劳感。

锻炼持续进行,直到患者达到目标心率或出现如严重呼吸困难、胸痛或头晕等需要停止测试的症状。

术后护理

  1. 运动后监测患者10至15分钟,直到心率恢复正常。当患者稳定并无相关症状时停止监测。
  2. 如果观察到心肌缺血迹象(如胸痛)或心电图变化(如ST段压低、ST段抬高或T波倒置),可能需要额外监测和干预。
  3. 患者会被告知潜在的检测后症状以及异常结果的具体说明。

安全与风险管理

压力测试通常是安全的,但风险较小,包括胸痛、晕厥,极少情况下可能发生心肌梗死。测试期间有医疗人员和急救设备可应对不良事件。

Transcript

运动负荷试验通过使用跑步机或固定自行车测量心脏对劳累的反应来评估心血管功能并诊断心脏状况。

测试前,护士会告知患者有关手术的信息,指导他们穿着舒适的衣服和运动鞋,并确保患者禁食三个小时,同时提前 24 小时避免咖啡因、酒精和烟草。

护士连接 10 根心电图导联,将心前区导联置于标准位置。然后将左右臂电极放置在锁骨下方 2 厘米处,将左右腿电极放置在下躯干的胸腔下方。

在测试期间,运动从低强度热身阶段开始,逐渐增加,并持续监测心电图、心率和血压。

当心电图发生显著变化或出现胸痛或呼吸困难等症状时,测试会停止在目标心率处。

阴性结果显示心电图没有变化。阳性解释可能包括 ST 段压低、T 波倒置或其他提示缺血或心律失常的心电图改变,这可能需要进一步治疗。

Key Terms and Definitions

  • Exercise Stress Test (Main keyword) – Evaluation tool for cardiovascular function using physical exertion.
  • Treadmill Test – Another term for exercise stress test often performed on a treadmill.
  • Coronary Artery Disease (CAD) – Commonly identified through exercise stress tests, a disease of heart arteries.
  • Baseline Heart Rate – Initial heart rate recorded before the start of the stress test.
  • Myocardial Ischemia - Insufficient blood flow to the heart muscle due to narrowing of heart arteries.

Learning Objectives

  • Define Exercise Stress Test – Understand its purpose and procedures (e.g., Exercise Stress Test).
  • Contrast Resting and Exertion States – Identify changes in cardiovascular response during these states (e.g., Baseline Heart Rate).
  • Explore Potential Indications – Discuss the reasons for recommending a stress test (e.g., Coronary Artery Disease symptoms).
  • Explain Test Monitoring Process – Understand how physiological parameters are monitored during the test.
  • Apply in Clinical Contexts – Discuss its usefulness in cardiovascular disease diagnosis and management.

Questions that this video will help you answer

  • What is an Exercise Stress Test and how does it evaluate cardiovascular function?
  • How is the Baseline Heart Rate used in an Exercise Stress Test?
  • When might a physician recommend a patient for an Exercise Stress Test?

This video is also useful for

  • Students – Grasp how Exercise Stress Test contributes to cardiovascular health evaluation
  • Educators – Offer detailed insights into the Exercise Stress Test assisting in teaching the topic
  • Researchers – Understand how Exercise stress test can contribute to medical research.
  • Medical Practitioners – Enhance their knowledge and skills in conducting and interpreting an Exercise Stress Test.

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