Related Experiment Video
Updated: Dec 26, 2025

Analyzing Long-Term Electrocardiography Recordings to Detect Arrhythmias in Mice
Published on: May 23, 2021
de Winter's Pattern: An Unusual but Very Important Electrocardiographic Sign to Recognize
Giovanni Barbati1, Francesco Caprioglio1
1Department of Cardiology, San Bortolo Hospital, Vicenza, Italy.
Abstract:
ST-segment elevation myocardial infarction (STEMI) equivalent patterns make the diagnosis of STEMI very challenging. We present a case of de Winter's pattern (dWp) in a man admitted to the emergency department for chest pain who developed cardiogenic shock despite successful percutaneous coronary intervention. Electrocardiograms performed at arrival, after 10 minutes, and the day after the revascularization demonstrated a dynamic and rapid evolution of dWp. Our case underlines the importance to promptly recognize dWp as a STEMI equivalent pattern to advance the patient to a rapid reperfusion strategy and confirms the high-risk and probably evolutive feature of this sign.
Related Concept Videos
Electrocardiogram
Three major waveforms are present in a typical ECG recording: the P wave, the QRS complex, and...
Correlation between ECG and Cardiac Cycle
A cardiac action potential originates in the SA node and spreads throughout the atria and the AV node in approximately 0.03 seconds. This results in the P wave in an ECG and triggers atrial contraction. The action potential is then briefly slowed at the AV node, allowing the atria to contract and fill the ventricles with blood before...
Electrocardiogram Fundamentals
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...
ECG Interpretation of Rhythms
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....
ECG Interpretation of Arrhythmias II: Atrial, Junctional and Ventricular Arrhythmias
ECG Interpretation of Arrhythmias I: Sinus Arrhythmias
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,...

