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Updated: Aug 23, 2026

Utilizing Percutaneous Ventricular Assist Devices in Acute Myocardial Infarction Complicated by Cardiogenic Shock
06:10

Utilizing Percutaneous Ventricular Assist Devices in Acute Myocardial Infarction Complicated by Cardiogenic Shock

Published on: June 12, 2021

Mechanical circulatory assist devices

G J Magovern1, S B Park, G J Magovern

  • 1Department of Surgical Research, Allegheny-Singer Research Institute, Pittsburgh, Pennsylvania 15212, USA.

Texas Heart Institute Journal
|September 1, 1987
PubMed

Insights

Ventricular assist devices aid heart recovery by reducing workload and improving blood flow. Studies show metabolic, functional, and structural improvements in stunned myocardium during biventricular support.

Area of Science:

  • Cardiology
  • Biomedical Engineering

Background:

  • Cardiogenic shock affects millions annually post-myocardial infarction or open-heart surgery.
  • Ventricular assist devices (VADs) reduce cardiac workload and enhance coronary perfusion.
  • Mechanisms of myocardial recovery following mechanical circulatory support remain unclear.

Purpose of the Study:

  • To investigate the metabolic, functional, and ultrastructural changes in stunned myocardium during biventricular support.
  • To elucidate the mechanisms contributing to myocardial recovery after mechanical circulatory assistance.

Main Methods:

  • Development of a canine model with stunned myocardium.
  • Assessment of metabolic, functional, and ultrastructural parameters before, during, and after biventricular support.

Main Results:

  • A close correlation was observed between metabolic, functional, and structural recovery.
  • In post-cardiac surgery patients, 57% could be weaned from circulatory support using a centrifugal pump (BioMedicus).
  • VADs stabilize patients with cardiogenic shock and serve as a bridge to cardiac transplantation.

Conclusions:

  • Mechanical circulatory support promotes recovery of stunned myocardium.
  • VADs are effective in managing cardiogenic shock and supporting patients awaiting transplantation.

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