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Related Concept Videos

Electrocardiogram01:29

Electrocardiogram

2.3K
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...
2.3K
Electrocardiogram Fundamentals01:28

Electrocardiogram Fundamentals

563
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...
563
ECG Interpretation of Rhythms01:24

ECG Interpretation of Rhythms

725
An electrocardiogram (ECG)graphically represents the heart's electrical activity on ECG paper or a monitor.
Components of the Electrocardiogram
The primary components of a normal ECG waveform in Normal sinus rhythm(NSR) include the P wave, PR interval, QRS complex, ST segment, T wave, and occasionally a U wave.
ECG waveforms are divided by vertical and horizontal lines at standard intervals.
The horizontal axis measures time and rate, and the vertical axis measures amplitude or voltage....
725
Imaging Studies for Cardiovascular System I:Echocardiography01:17

Imaging Studies for Cardiovascular System I:Echocardiography

314
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,...
314
ECG Interpretation of Arrhythmias I: Sinus Arrhythmias01:16

ECG Interpretation of Arrhythmias I: Sinus Arrhythmias

210
Arrhythmias are disturbances in the heart's rhythm that lead to abnormal heartbeats. These irregularities can originate from different parts of the heart and are classified based on their origin and nature.
Types of Arrhythmias
Sinus Node Arrhythmias
Sinus Bradycardia: Originating from the sinoatrial (SA) node, sinus bradycardia involves slower impulses, resulting in a heart rate of less than 60 beats per minute (bpm). Causes include sleep, vagal stimulation, beta-blockers, hypothyroidism,...
210
Exercise Stress Test01:26

Exercise Stress Test

196
Introduction
Exercise stress testing, commonly known as a treadmill test, is a noninvasive procedure used to evaluate cardiovascular function and diagnose heart conditions.
Definition
An exercise stress test measures the heart's response to exertion using a treadmill or stationary bicycle. Chest electrodes record the heart's electrical activity through an ECG, and blood pressure is monitored regularly.
Purposes
196

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Recognizing 12-Lead Electrocardiographic Patterns in Patients at Risk for Lethal Arrhythmias.

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Acute Symptom Onset During Exercise Stress Testing.

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Heart-Brain Connection: Role of the Central Nervous System.

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Related Experiment Video

Updated: Jun 24, 2025

A Research Method For Detecting Transient Myocardial Ischemia In Patients With Suspected Acute Coronary Syndrome Using Continuous ST-segment Analysis
18:11

A Research Method For Detecting Transient Myocardial Ischemia In Patients With Suspected Acute Coronary Syndrome Using Continuous ST-segment Analysis

Published on: December 28, 2012

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De Winter's ECG: Not your usual STEMI.

Vishwajit J Tuchscherer1, Teri M Kozik1, Muhammad Waqas Choudhry2

  • 1St. Joseph's Medical Center, Stockton, CA, USA.

Journal of Electrocardiology
|June 8, 2024
PubMed
Summary

De Winter

Area of Science:

  • Cardiology
  • Emergency Medicine
  • Electrocardiography

Background:

  • ST-segment elevation myocardial infarction (STEMI) requires prompt revascularization.
  • Typical STEMI ECG findings often guide immediate treatment.
  • De Winter's Pattern (dWP) is an underrecognized ECG finding associated with acute coronary occlusion.

Observation:

  • A 39-year-old male presented with chest pain and diaphoresis, experiencing pulseless polymorphic ventricular tachycardia.
  • Initial electrocardiogram revealed De Winter's Pattern (dWP).
  • Coronary angiography showed a 100% thrombotic occlusion of the left anterior descending artery.

Findings:

  • De Winter's Pattern (dWP) on ECG can indicate a critical coronary artery occlusion.
  • dWP is an ST-segment elevation myocardial infarction (STEMI) equivalent.
Keywords:
Anterior myocardial infarctionDe Winter's patternLeft anterior descending coronary arteryST-segment elevation myocardial infarction

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  • This pattern may not present with classic STEMI ECG changes, potentially delaying diagnosis.

    • Implications:

    • Increased awareness of dWP in young males with chest pain is crucial for timely diagnosis.
    • Recognizing dWP as a STEMI equivalent can prevent delays in life-saving revascularization.
    • Prompt identification and treatment of dWP can improve patient outcomes in acute myocardial infarction.