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Related Experiment Video

Updated: Jan 30, 2026

Echocardiographic Characterization of Left Ventricular Structure, Function, and Coronary Flow in Neonate Mice
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Malaligned bioprosthetic valve causing left ventricular outflow tract obstruction.

Panagiota Christia1, Samantha Lee1, Olha Lyuba1

  • 1Icahn School of Medicine at Mount Sinai, New York City, New York.

Echocardiography (Mount Kisco, N.Y.)
|January 25, 2019
PubMed
Summary

Left ventricular outflow tract obstruction is a rare complication after mitral valve replacement. Careful patient and prosthesis selection, along with surgical technique, can minimize this risk.

Keywords:
aorto-mitral anglebioprosthetic valveleft ventricular outflow tract obstructionmitral valve replacement

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Area of Science:

  • Cardiology
  • Cardiac Surgery
  • Biomedical Engineering

Background:

  • Bioprosthetic mitral valve insertion is a common procedure for treating mitral valve disease.
  • A rare complication involves obstruction of the left ventricular outflow tract (LVOT).
  • This obstruction arises from the prosthetic valve's struts impinging on the interventricular septum.

Observation:

  • LVOT obstruction is more probable when using small, high-profile prosthetic valves.
  • Patient anatomy, specifically a small outflow tract, increases the risk.
  • The physical interaction between the prosthesis and cardiac structures is key.

Findings:

  • Strut impingement on the interventricular septum directly causes LVOT obstruction.
  • Valve size and profile are critical factors in the development of this complication.
  • Patient-specific outflow tract dimensions influence the likelihood of obstruction.

Implications:

  • Awareness of this complication is crucial for cardiac surgeons.
  • Modifications in surgical technique may prevent or reduce LVOT obstruction.
  • Optimizing prosthetic valve selection based on patient anatomy is recommended.