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Shark fin sign

Manne Janaki Rami Reddy1, Jalaj Garg1

  • 1Division of Cardiology Cardiac Arrhythmia Service Medical College of Wisconsin Milwaukee WI USA.

Journal of Arrhythmia
|October 8, 2021
PubMed

Insights

This case study highlights the rare "shark fin sign" on electrocardiograms (ECGs). This sign, characterized by diffuse ST-segment elevations, indicated multivessel coronary vasospasm secondary to hemopericardium.

Area of Science:

  • Cardiology
  • Medical Diagnostics

Background:

  • The electrocardiogram (ECG) is a critical tool for diagnosing cardiac conditions.
  • Specific ECG findings can indicate rare or complex pathologies.

Purpose of the Study:

  • To report a case demonstrating the
  • shark fin sign
  • an unusual ECG pattern.
  • To correlate this sign with multivessel coronary vasospasm secondary to hemopericardium.

Main Methods:

  • Case report analysis.
  • Electrocardiogram (ECG) interpretation.
  • Review of clinical presentation and etiology.

Main Results:

  • The patient presented with diffuse tombstone-like QRS-ST segment elevations in inferior and anterolateral leads, consistent with the "shark fin sign."
  • These transient ECG changes were attributed to multivessel coronary vasospasm.
  • The vasospasm was likely secondary to hemopericardium.

Conclusions:

  • The "shark fin sign" on ECG can be a marker for significant underlying cardiac events.
  • This specific ECG finding in the case was indicative of multivessel coronary vasospasm.
  • Hemopericardium should be considered as a potential cause for such vasospasm and associated ECG changes.

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