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Related Concept Videos

Myocarditis I: Introduction01:21

Myocarditis I: Introduction

Myocarditis is inflammation of the myocardium, which is the muscular layer of the heart.EtiologyMyocarditis has a diverse etiology, including a wide range of infectious and non-infectious causes:Infectious CausesViral: Common viruses include Coxsackie A and B, adenovirus, parvovirus B19, enteroviruses, and influenza A.Bacterial: Examples include infections caused by Streptococcus, Staphylococcus, and Mycoplasma species.Rickettsial: Infections like Rocky Mountain spotted fever can result in...
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Myocardial Infarction and Functional Outcome Assessment in Pigs
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[Postinfarction intramyocardial dissection].

Jesús Vargas Barrón1

  • 1Instituto Nacional de Cardiología "Ignacio Chávez", INCICH, Juan Badiano Núm. 1, Col. Sección XVI, Tlalpan 14080, México, DF. ccd_vargas@terra.com.mx

Archivos De Cardiologia De Mexico
|October 22, 2008
PubMed
Summary

Intramyocardial ventricular dissection complicates acute myocardial infarction, leading to high mortality, especially with septal hematoma. Echocardiography effectively visualizes dissection evolution, guiding diagnosis and management.

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Last Updated: Jun 28, 2026

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Coronary Artery Ligation and Intramyocardial Injection in a Murine Model of Infarction
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Coronary Artery Ligation and Intramyocardial Injection in a Murine Model of Infarction

Published on: June 7, 2011

Area of Science:

  • Cardiology
  • Medical Imaging
  • Pathology

Context:

  • Acute myocardial infarction (AMI) can present with complex intramyocardial complications.
  • Intramyocardial ventricular dissection (IVD) is a rare but severe complication of AMI.
  • Echocardiography and necropsy are key diagnostic modalities.

Purpose:

  • To describe the clinical evolution and echocardiographic findings of 16 patients with acute myocardial infarction and intramyocardial ventricular dissection.
  • To correlate dissection location and characteristics with patient outcomes and mortality.
  • To evaluate the utility of transesophageal echocardiography (TEE) in diagnosing cardiac rupture secondary to AMI.

Summary:

  • This study details the progression of 16 patients diagnosed with acute myocardial infarction complicated by intramyocardial ventricular dissection.
  • Dissections involved the septum (10 patients) or left ventricular free wall (6 patients), with anterior wall infarction being most common (14 patients).
  • Mortality was 50% overall, rising to 80% in patients with septal hematoma. Echocardiography revealed diverse acoustic patterns reflecting dissection evolution and chamber communication.

Impact:

  • Intramyocardial ventricular dissection significantly increases mortality in acute myocardial infarction patients.
  • Echocardiographic findings correlate with dissection type and prognosis.
  • Transesophageal echocardiography is identified as a crucial non-invasive tool for evaluating suspected cardiac rupture in AMI.