Related Experiment Video
Updated: Apr 28, 2026
09:23
Confirmation of Myocardial Ischemia and Reperfusion Injury in Mice Using Surface Pad Electrocardiography
Published on: November 24, 2016
13.0K
Imaging QRS complex and ST segment in myocardial infarction.
Ljuba Bacharova1, Lia E Bang2, Vavrinec Szathmary3
1International Laser Center, 841 04 Bratislava, Slovak Republic; Institute of Pathological Physiology, Medical Faculty, Comenius University, Bratislava, Slovak Republic.
Journal of Electrocardiology
|June 4, 2014
Summary
This study introduces a graphical method using Dipolar ElectroCARdioTOpography (DECARTO) to visualize electrical changes in myocardial infarction. It effectively images altered depolarization sequences and ST segment deviations, aiding in understanding heart attack impacts.
Area of Science:
- Cardiology
- Medical Imaging
- Electrophysiology
Background:
- Acute myocardial infarction (MI) alters cardiac electrical properties, leading to characteristic ECG changes like pathological Q waves and ST deviations.
- These electrical changes reflect the location and extent of myocardial damage.
Purpose of the Study:
- To present a graphical imaging method for visualizing changes in myocardial depolarization sequence and ST segment deviations in MI.
- To utilize the Dipolar ElectroCARdioTOpography (DECARTO) method for this purpose.
Main Methods:
- Simulated ECG data from models with electrically inactive and slowed conduction areas were used.
- ECG data were transformed into projected images to visualize ventricular depolarization and estimate "myocardium at risk" from ST segment deviation.
Main Results:
- The DECARTO method generated Mercator projections showing anatomical segments and coronary artery distribution.
- Altered depolarization sequences appeared as dislocations around affected areas.
- "Myocardium at risk" was accurately identified by ST segment deviation.
Conclusions:
- The developed ECG imaging method visually represents depolarization sequence changes and ST segment deviations in MI.
- This technique allows for visual comparison with other non-ECG imaging modalities.
Related Concept Videos
01:30Acute Coronary Syndrome III: Diagnostic Studies
493
Diagnosing acute coronary syndrome or ACS begins with a thorough patient history. Notable symptoms include central, crushing chest pain radiating to the left arm, neck, jaw, or back, along with shortness of breath, sweating (diaphoresis), nausea, vomiting, dizziness, and palpitations.It is crucial to note any history of cardiac illnesses and assess risk factors, including age, gender, smoking, hypertension, diabetes, hyperlipidemia, and a sedentary lifestyle.During physical examination, vital...
493
01:19Acute Coronary Syndrome II: Pathophysiology and Clinical Manifestations
923
The pathophysiology of Acute Coronary Syndrome [ACD] involves several key processes:The main underlying cause of ACD is atherosclerosis, a chronic inflammatory disease characterized by the buildup of lipid-laden plaques within the coronary arteries.As the atherosclerotic plaque grows in the coronary artery, it may become unstable due to the formation of a lipid-rich core and a thin fibrous cap. Inflammatory cells within the plaque, such as macrophages, secrete enzymes that degrade the...
923
01:30Acute Coronary Syndrome I: Introduction
2.0K
Acute Coronary Syndrome (ACS) encompasses a spectrum of heart conditions caused by sudden obstruction of coronary arteries, typically resulting from the rupture of an atherosclerotic plaque and subsequent thrombus (blood clot) formation. This obstruction can lead to partial or complete blockage of blood flow, causing varying degrees of myocardial ischemia or infarction.ACS includes the following clinical entities:Unstable Angina (UA)Non-ST-Elevation Myocardial Infarction (NSTEMI)ST-Elevation...
2.0K
01:29Electrocardiogram
9.5K
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...
Three major waveforms are present in a typical ECG recording: the P wave, the QRS complex, and...
9.5K
01:28Electrocardiogram Fundamentals
2.1K
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...
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...
2.1K
01:27Myocarditis II: Clinical Features and Diagnostic Tests
493
Myocarditis is an inflammation of the heart muscle. The symptoms vary widely, encompassing asymptomatic presentations to severe, acute manifestations.Clinical PresentationAsymptomatic cases: In some instances, myocarditis may be asymptomatic, with the infection resolving without intervention. These cases often go undetected unless discovered incidentally through diagnostic imaging or tests conducted for other reasons.General Early Symptoms: Early symptoms of myocarditis are non-specific and can...
493