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Related Concept Videos

Acute Coronary Syndrome II: Pathophysiology and Clinical Manifestations01:19

Acute Coronary Syndrome II: Pathophysiology and Clinical Manifestations

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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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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Electrocardiogram

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Aortic Regurgitation II: Clinical Features and Diagnostic Tests01:22

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An electrocardiogram (ECG) is a diagnostic tool for identifying cardiac conditions such as arrhythmias, conduction abnormalities, and myocardial ischemia.
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A Research Method For Detecting Transient Myocardial Ischemia In Patients With Suspected Acute Coronary Syndrome Using Continuous ST-segment Analysis
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Sub aortic tendon induced ST segment elevation--a new echo electrocardiographic phenomenon?

James Ker1

  • 1Department of Physiology, University of Pretoria, Gesina, Pretoria, South Africa. jker@wol.co.za

Cardiovascular Ultrasound
|March 26, 2009
PubMed
Summary

Left ventricular false tendons can cause ST-segment elevation mimicking heart attacks. This newly identified subaortic tendon-induced ST-segment elevation is a benign finding, distinct from serious conditions like Brugada syndrome.

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Published on: October 20, 2016

Area of Science:

  • Cardiology
  • Cardiac Electrophysiology
  • Medical Case Reports

Background:

  • ST-segment elevation on electrocardiograms (ECGs) typically suggests myocardial infarction.
  • Numerous other conditions can cause ST-segment elevation, necessitating differential diagnosis.
  • Left ventricular false tendons are known congenital anomalies, often associated with benign findings.

Observation:

  • A case report details a patient with a left ventricular false tendon attached to the interventricular septum.
  • This false tendon was observed to cause significant ST-segment elevation in the anterior precordial ECG leads.
  • This specific presentation has not been previously documented in medical literature.

Findings:

  • The study proposes a new entity: subaortic tendon-induced ST-segment elevation.
  • This phenomenon is attributed to the mechanical effect of the false tendon on myocardial depolarization.
  • The observed ST-segment elevation is characterized as a distinct ECG pattern.

Implications:

  • Subaortic tendon-induced ST-segment elevation is a newly recognized, entirely benign condition.
  • Accurate identification is crucial to prevent misdiagnosis and unnecessary anxiety or invasive procedures.
  • This finding should be differentiated from pathological ST-segment elevation, such as that seen in Brugada syndrome or acute myocardial infarction.