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Related Concept Videos

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Mitral Regurgitation III: Medical Management

Mitral regurgitation (MR) is characterized by retrograde blood circulation from the left ventricle into the left atrium due to inadequate mitral valve closure. The severity of the condition, symptoms, and underlying cause determine treatment strategies.Monitoring and Pharmacological TreatmentPatients with mild to moderate MR typically do not need immediate intervention but regular monitoring to assess progression and guide treatment. Patients with mild MR should have an echocardiogram every 3-5...
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Related Experiment Video

Updated: May 9, 2026

Benefits of Cardiac Resynchronization Therapy in an Asynchronous Heart Failure Model Induced by Left Bundle Branch Ablation and Rapid Pacing
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Impella 5.5 for Preoperative Optimization in the Setting of Ruptured Papillary Muscle.

David Rekhtman1, Amit Iyengar1, Jason Han1

  • 1Division of Cardiovascular Surgery, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania, United States.

The Thoracic and Cardiovascular Surgeon Reports
|September 2, 2025
PubMed
Summary

Managing cardiogenic shock from a ruptured papillary muscle is difficult. A temporary left ventricular assist device, the Impella 5.5, successfully stabilized hemodynamics in two patients before mitral valve replacement.

Keywords:
circulatory-assist devicesheart failuremitral valve surgerymyocardial infarction

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Area of Science:

  • Cardiovascular Medicine
  • Mechanical Circulatory Support

Background:

  • Ruptured papillary muscle leading to cardiogenic shock presents a critical management challenge.
  • Optimal hemodynamic support is crucial for patient survival and surgical outcomes.

Observation:

  • Two cases of severe cardiogenic shock due to papillary muscle rupture were analyzed.
  • Patients presented with hemodynamic instability requiring urgent intervention.

Findings:

  • Successful and safe hemodynamic optimization was achieved using the Impella 5.5 temporary left ventricular assist device.
  • The axial-flow device provided effective circulatory support prior to definitive surgical repair.

Implications:

  • The Impella 5.5 offers a viable strategy for stabilizing patients with cardiogenic shock from papillary muscle rupture.
  • This approach may improve outcomes for patients undergoing mitral valve replacement in this high-risk setting.