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相关概念视频

Electrocardiogram01:29

Electrocardiogram

An electrocardiogram (ECG or EKG) is a critical diagnostic tool that records the electrical signals produced by the heart during each heartbeat. This recording is achieved through electrodes placed strategically on the arms, legs, and chest. The electrocardiograph amplifies these signals and produces 12 distinct tracings, offering a comprehensive understanding of the heart's electrical activity.
Three major waveforms are present in a typical ECG recording: the P wave, the QRS complex, and the T...
Electrocardiogram Fundamentals01:28

Electrocardiogram Fundamentals

Introduction
An electrocardiogram (ECG) is a diagnostic tool for identifying cardiac conditions such as arrhythmias, conduction abnormalities, and myocardial ischemia.
Definition
An electrocardiogram (ECG) visualizes the heart's electrical activity by tracing the electrical movement associated with each heartbeat on a graph or monitor. As the heart beats, an electrical wave passes through it, correlating with the cardiac cycle events.
Parts of an ECG
An ECG utilizes electrodes on the skin to...
Holter Monitor: 24-Hour Monitoring01:23

Holter Monitor: 24-Hour Monitoring

Holter monitoring is a continuous electrocardiography (ECG) recording that tracks the heart's electrical activity over an extended period, generally 24 to 48 hours. This noninvasive diagnostic tool detects irregular heart rhythms that may not be captured during a standard ECG performed in a clinical setting.DeviceThe Holter monitor is a portable, small device connected to several electrodes on the patient's chest. These electrodes detect the heart's electrical signals and transmit them to the...
Dysrhythmias V: Evaluating Dysrhythmias01:30

Dysrhythmias V: Evaluating Dysrhythmias

Dysrhythmias, also known as arrhythmias, are disturbances in the heart's rhythm that range from benign to life-threatening. A thorough evaluation is crucial for appropriate management and involves a comprehensive medical history, physical examination, and various diagnostic tests.Medical HistorySymptoms: Collect detailed information on palpitations, dizziness, syncope, chest pain, and fatigue. Note their onset, frequency, and triggers.Previous Cardiac Issues: Document any history of heart...

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哈佛-埃莫里心电图数据库

Zuzana Koscova1, Qiao Li1, Chad Robichaux1

  • 1Department of Biomedical Informatics, School of Medicine, Emory University, Atlanta, 30322, US.

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概括
此摘要是机器生成的。

哈佛-埃莫里心电图数据库 (HEEDB) 是最大的12导电心电图 (ECG) 记录的开放访问集合. 这种多样化的数据集支持机器学习模型的开发,以改善心血管诊断和偏差评估.

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科学领域:

  • 心脏病学 心脏病学
  • 医疗信息学 医疗信息学
  • 机器学习 机器学习

背景情况:

  • 哈佛-埃莫里心电图数据库 (HEEDB) 是最大的12导电心电图 (ECG) 记录的开放访问存储库.
  • 它包括来自两个主要学术医疗中心近200万名患者的1000多万个心电图.

研究的目的:

  • 引入哈佛-埃莫里心电图数据库 (HEEDB) 作为心血管研究的全面资源.
  • 促进用于ECG分析的机器学习算法的培训和验证.

主要方法:

  • 该数据库整合了来自马萨诸塞州总医院的10,608,417个心电图记录和来自埃默里大学医院的998,844个.
  • 电脑心电图是10秒,12次记录 (250/500Hz,WFDB格式),与人口和临床数据联系在一起.
  • 包括Marquette 12SL软件注释,医生重读和ICD代码进行全面分析.

主要成果:

  • HEEDB提供了一个大型的多中心数据集,包含大量的元数据和诊断注释.
  • 该数据集能够对机器学习模型性能和潜在偏差进行可靠的评估.

结论:

  • HEEDB是一个有价值的,开放的资源,用于推进心脏病学中的AI.
  • 它支持使用心电图的更准确和公平的诊断工具的开发.