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Electrocardiogram01:29

Electrocardiogram

3.2K
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...
3.2K
Dysrhythmias V: Evaluating Dysrhythmias01:30

Dysrhythmias V: Evaluating Dysrhythmias

121
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...
121
Electrocardiogram Fundamentals01:28

Electrocardiogram Fundamentals

880
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...
880
Imaging Studies for Cardiovascular System I:Echocardiography01:17

Imaging Studies for Cardiovascular System I:Echocardiography

492
Cardiac imaging studies encompass a wide range of noninvasive and minimally invasive techniques designed to visualize the heart's structure and function in detail. One such technique is echocardiography, which uses high-frequency ultrasound waves to produce detailed images of the heart, known as echocardiograms.
Indications: Echocardiography is utilized to diagnose heart failure, valve disorders, and myocardial infarction. It also assesses cardiac structures' size, shape, and motion,...
492
Pulse rhythm01:30

Pulse rhythm

933
Pulse rhythm refers to the pattern of pulsations within specific intervals, offering valuable insights into the regularity or irregularity of the heart's beats as observed through the pattern of pulsation within specific intervals. A regular pulse exhibits a consistent heart rate with uniform waveforms and pulsation force, variations of which can be classified as normal, weak, or bounding.
Conversely, an irregular pulse pattern is termed dysrhythmia, stemming from disruptions in cardiac...
933
Rheumatic Heart Disease II: Clinical Manifestations and Diagnostic Studies01:22

Rheumatic Heart Disease II: Clinical Manifestations and Diagnostic Studies

66
The key clinical manifestations of Rheumatic heart disease (RHD) include several distinct cardiac symptoms.Carditis, a hallmark of acute rheumatic fever, involves inflammation of the heart's endocardium, myocardium, and pericardium. Chronic RHD often results from recurrent episodes of carditis. Its symptoms include the following:Murmurs are caused by valvular damage, especially to the mitral and aortic valves. Mitral stenosis or regurgitation is common, with characteristic heart murmurs...
66

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関連する実験動画

Updated: Sep 15, 2025

Patient Directed Recording of a Bipolar Three-Lead Electrocardiogram using a Smartwatch with ECG Function
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Patient Directed Recording of a Bipolar Three-Lead Electrocardiogram using a Smartwatch with ECG Function

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AIを用いた心電図による構造性心疾患の検出

Timothy J Poterucha1, Linyuan Jing2, Ramon Pimentel Ricart1

  • 1Seymour, Paul, and Gloria Milstein Division of Cardiology, Department of Medicine, Columbia University Irving Medical Center, New York, NY, USA.

Nature
|July 16, 2025
PubMed
まとめ
この要約は機械生成です。

新しいAIモデルであるEchoNextは 心拍データを用いて 構造的な心疾患の多くの形態を検出できます このディープラーニング・ツールは 高い精度で 広く利用可能な心臓病のスクリーニングの 可能性を示しています

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Analyzing Long-Term Electrocardiography Recordings to Detect Arrhythmias in Mice
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Analyzing Long-Term Electrocardiography Recordings to Detect Arrhythmias in Mice

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Ultrasonic Assessment of Myocardial Microstructure
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Ultrasonic Assessment of Myocardial Microstructure

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関連する実験動画

Last Updated: Sep 15, 2025

Patient Directed Recording of a Bipolar Three-Lead Electrocardiogram using a Smartwatch with ECG Function
05:03

Patient Directed Recording of a Bipolar Three-Lead Electrocardiogram using a Smartwatch with ECG Function

Published on: December 11, 2019

8.8K
Analyzing Long-Term Electrocardiography Recordings to Detect Arrhythmias in Mice
06:07

Analyzing Long-Term Electrocardiography Recordings to Detect Arrhythmias in Mice

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Ultrasonic Assessment of Myocardial Microstructure
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Ultrasonic Assessment of Myocardial Microstructure

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科学分野:

  • 心臓病科
  • 人工知能
  • 医療用イメージング

背景:

  • 構造的な心臓病の早期発見は 患者の改善に不可欠です
  • エコーカーディオグラフィのような現在のスクリーニング方法は,コストとアクセシビリティによって制限されています.
  • 以前の心臓病の検出のためのAIモデルは 限られた集団や特定の状態で訓練されていました

研究 の 目的:

  • 広範囲にわたる 構造的な心臓病の検出を目的とした ディープラーニングモデルである エコーネクストを紹介します
  • EchoNextの診断の正確性と一般化性を評価する.
  • 大規模な心臓病検診の拡大における AI の可能性を評価する.

主な方法:

  • エコーネクストを開発しました ディープラーニングモデルで 100万以上の心拍数と 画像記録を訓練しました
  • 内部と外部でモデルのパフォーマンスを検証した.
  • 心臓画像検査なしで 臨床試験を行いました
  • 制御された環境でEchoNextのパフォーマンスを心臓科医と比較した.

主要な成果:

  • エコネクストは,さまざまな集団と介護環境で高い診断精度を示しました.
  • このモデルは 制御された評価で心臓科医を上回りました
  • 前向きな試験は,以前に診断されていない心臓病の成功確認を示しました.
  • 異なる人種や民族の間で一貫した結果が見られた.

結論:

  • エコネクストのような ディープラーニングモデルは 構造的な心臓病のスクリーニングの アクセスを改善する大きな可能性を 示しています
  • AIは 広範なスクリーニングにおける 伝統的なイメージングツールの限界を 克服するのに役立ちます
  • モデルの重量とデータの公開は,心臓血管の健康のためのAIのさらなる研究と透明性をサポートします.