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Related Concept Videos

Electrocardiogram01:29

Electrocardiogram

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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.
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Acute Coronary Syndrome II: Pathophysiology and Clinical Manifestations01:19

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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...
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Electrocardiogram Fundamentals01:28

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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
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Acute Coronary Syndrome III: Diagnostic Studies01:30

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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...
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Acute Coronary Syndrome I: Introduction01:30

Acute Coronary Syndrome I: Introduction

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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...
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Cardiac Action Potential01:30

Cardiac Action Potential

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Cardiac action potentials are essential for proper heart function, enabling the rhythmic contractions needed for adequate blood circulation. Nodal cells and Purkinje fibers, specialized for electrical conduction, generate these action potentials.
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Ionic Basis of Cardiac Action Potentials
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Confirmation of Myocardial Ischemia and Reperfusion Injury in Mice Using Surface Pad Electrocardiography
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Left main occlusion - a classic electrocardiogram.

Johannes Peter Schwaiger1, Johannes Mair2

  • 1Department of Internal Medicine, Landeskrankenhaus Hall, Hall, Austria. johannesschwaiger1@gmail.com.

Wiener Klinische Wochenschrift
|June 10, 2016
PubMed
Summary
This summary is machine-generated.

Left main coronary artery occlusion has a poor prognosis, supplying most of the left ventricle. This case highlights classic electrocardiogram findings alongside echocardiogram and coronary angiography.

Keywords:
Cardiac catheterizationCoronary angiographyEchocardiographyMyocardial infarctionVentricle

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Area of Science:

  • Cardiology
  • Medical Imaging
  • Clinical Case Study

Background:

  • Left main coronary artery (LMCA) occlusion is a critical condition with a high mortality rate.
  • The LMCA supplies a significant portion of the left ventricle (>75%), making its occlusion life-threatening.

Observation:

  • This case report details a patient presenting with symptoms indicative of acute coronary syndrome.
  • Classic electrocardiogram (ECG) abnormalities were observed, suggesting significant myocardial ischemia.
  • Echocardiogram videos and images provided crucial information on left ventricular function and wall motion abnormalities.
  • Coronary angiography confirmed the presence and extent of the left main occlusion.

Findings:

  • The diagnostic workup, including ECG, echocardiography, and coronary angiography, successfully identified a critical left main coronary artery occlusion.
  • The findings underscore the importance of a comprehensive diagnostic approach in patients with suspected LMCA disease.

Implications:

  • Early recognition and intervention in left main occlusion are crucial for improving patient outcomes.
  • This case emphasizes the utility of integrating various diagnostic modalities for accurate diagnosis and management planning.
  • Such cases contribute valuable insights into the clinical presentation and diagnostic pathways for severe coronary artery disease.