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Related Concept Videos

Imbalances in Cardiac Output01:26

Imbalances in Cardiac Output

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The heart's primary function is to pump blood throughout the body, maintaining a balance between blood sent out (cardiac output) and blood returning (venous return). If this balance is disrupted, it can result in congestive heart failure (CHF), a severe condition where the heart becomes an inefficient pump, leading to inadequate blood circulation.
CHF can occur due to the failure of either side of the heart. Left-side failure leads to pulmonary congestion—the right side continues to send...
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Pathophysiology of Heart Failure01:17

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Heart failure (HF) is a progressive syndrome involving ventricles that leads to inadequate cardiac output. It can be classified based on location and output or ejection fraction. Ejection fraction (EF) is an essential measurement in the diagnosis and surveillance of HF. Reduced EF corresponds to systolic heart failure (HFrEF). However, HF with preserved ejection fraction (HFpEF) is becoming increasingly prevalent. Also known as diastolic HF, this form of HF is related to aging. The...
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Related Experiment Video

Updated: Jun 27, 2025

Induction of Right Ventricular Failure by Pulmonary Artery Constriction and Evaluation of Right Ventricular Function in Mice
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Giant Left Ventricular Aneurysm With Dynamic Right Ventricular Compression and Subsequent End-Stage Heart Failure.

Colin A Martz1, Jonathan D Moreno1, Justin M Vader1

  • 1Division of Cardiology, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri, USA.

JACC. Case Reports
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A missed anterior myocardial infarction led to ischemic cardiomyopathy and a large left ventricular aneurysm. This caused right ventricular compression and cardiogenic shock, necessitating heart transplantation.

Keywords:
heart transplantationleft ventricular aneurysmventricular interdependence

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Area of Science:

  • Cardiology
  • Cardiovascular Surgery
  • Medical Case Reports

Background:

  • Myocardial infarction (MI) can lead to significant cardiac remodeling and dysfunction.
  • Ischemic cardiomyopathy is a common consequence of untreated or poorly managed MI.
  • Left ventricular aneurysms are rare but serious complications of MI.

Purpose of the Study:

  • To present a unique case of massive left ventricular aneurysm formation after a missed anterior myocardial infarction.
  • To highlight the potential for dynamic right ventricular compression and cardiogenic shock caused by such aneurysms.
  • To discuss the management of this complex clinical scenario, including heart transplantation.

Main Methods:

  • Case report detailing clinical presentation, diagnostic workup, and management.
  • Review of relevant literature on left ventricular aneurysms and myocardial infarction complications.

Main Results:

  • The patient presented with symptoms of heart failure secondary to ischemic cardiomyopathy.
  • Imaging revealed a massive true left ventricular aneurysm.
  • The aneurysm caused dynamic compression of the right ventricle, leading to cardiogenic shock.

Conclusions:

  • Missed myocardial infarctions can result in severe cardiac complications, including large left ventricular aneurysms.
  • Left ventricular aneurysms can cause mechanical complications such as right ventricular compression and hemodynamic compromise.
  • Heart transplantation may be a viable option for end-stage heart failure due to such complications.