Related Experiment Video

Updated: Aug 14, 2026

Transthoracic Echocardiography in Mice
08:09

Transthoracic Echocardiography in Mice

Published on: May 28, 2010

[Dyskinetic lesions of the left ventricle wall. Electrocardiographic data]

B Cham, W A Morales

    La Nouvelle Presse Medicale
    |September 20, 1975
    PubMed

    Insights

    The number of ST elevations on an electrocardiogram correlates more closely with the size of left ventricular dyskinetic lesions than ST elevation height. This finding aids in understanding post-infarction dyskinesia and ventricular aneurysms.

    Area of Science:

    • Cardiology
    • Medical Imaging
    • Electrophysiology

    Context:

    • Dyskinetic lesions of the left ventricle, including ventricular aneurysms and post-infarction dyskinesia, often require surgical intervention.
    • Electrocardiogram (ECG) is a crucial diagnostic tool in assessing cardiac conditions.

    Purpose:

    • To investigate the correlation between the size of left ventricular dyskinetic lesions and specific electrocardiogram findings.
    • To compare the correlation of lesion size with the number versus the height of ST elevations.

    Summary:

    • A study of 87 surgically treated patients with left ventricular dyskinetic lesions revealed a significant correlation between lesion size and the number of ST elevations on ECG.
    • This correlation was found to be stronger than the correlation between lesion size and the height of ST elevations.

    Impact:

    • Provides a more refined understanding of ECG markers for assessing the extent of left ventricular dyskinetic lesions.
    • May improve pre-operative evaluation and post-operative monitoring of patients with ventricular aneurysms and post-infarction dyskinesia.

    More Related Videos

    Ablation of Ischemic Ventricular Tachycardia Using a Multipolar Catheter and 3-dimensional Mapping System for High-density Electro-anatomical Reconstruction06:57

    Ablation of Ischemic Ventricular Tachycardia Using a Multipolar Catheter and 3-dimensional Mapping System for High-density Electro-anatomical Reconstruction

    Published on: January 31, 2019

    Transthoracic Echocardiography to Assess Post-Resuscitation Left Ventricular Dysfunction After Acute Myocardial Infarction and Cardiac Arrest in Pigs08:19

    Transthoracic Echocardiography to Assess Post-Resuscitation Left Ventricular Dysfunction After Acute Myocardial Infarction and Cardiac Arrest in Pigs

    Published on: July 12, 2022

    Related Concept Videos

    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...
    Dysrhythmias III: Characteristics of Dysrhythmias01:29

    Dysrhythmias III: Characteristics of Dysrhythmias

    Dysrhythmias, also known as arrhythmias, are irregular heart rhythms that result from abnormal electrical activity in the heart, affecting its ability to circulate blood efficiently. Tachyarrhythmias, a subset of dysrhythmias, are characterized by abnormally fast heart rates exceeding 100 beats per minute. Here are some types of tachyarrhythmias with their distinct ECG features:Sinus Tachycardia:Sinus tachycardia presents a regular heart rhythm with an increased rate of 101-180 beats per minute.
    Dysrhythmias IV: Characteristics of Bradyarrhythmias01:18

    Dysrhythmias IV: Characteristics of Bradyarrhythmias

    Bradyarrhythmias are cardiac rhythm disorders characterized by a slower-than-normal heart rate, typically defined as fewer than 60 beats per minute. Some of which are discussed here:Sinus BradycardiaSinus bradycardia presents a heart rate lower than 60 beats per minute, with a regular rhythm originating from the SA node. The ECG typically shows normal P waves preceding each QRS complex, a normal PR interval (0.12 to 0.20 seconds), and a normal QRS duration (0.06 to 0.10 seconds).First-Degree AV...
    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...
    ECG Interpretation of Arrhythmias II: Atrial, Junctional and Ventricular Arrhythmias01:25

    ECG Interpretation of Arrhythmias II: Atrial, Junctional and Ventricular Arrhythmias

    Arrhythmia is a condition characterized by an irregular heart rhythm, with ECG changes that differ based on its origin and nature. The types of arrhythmias discussed below include atrial, junctional, and ventricular arrhythmias.Atrial ArrhythmiasPremature Atrial Complexes (PACs): PACs are early atrial beats caused by stress, caffeine, alcohol, electrolyte imbalances, hypoxia, hyperthyroidism, or certain medications (e.g., bronchodilators and decongestants). The ECG shows early P waves with an...