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The Batista procedure. Theoretical analysis and clinical implications.

C R Bridges1, D Bogen

  • 1Department of Surgery, University of Pennsylvania, Philadelphia 19104, USA. cbridges@mail.med.upenn.edu

The Journal of Cardiovascular Surgery
|April 9, 2001
PubMed
Summary

The Batista procedure may improve heart function by reducing myocardial stress and increasing stroke volume in dilated ventricles. Preoperative end-systolic stress predicts patient benefit, guiding selection for this cardiac surgery.

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Area of Science:

  • Cardiovascular Surgery
  • Biomedical Engineering
  • Cardiac Mechanics

Background:

  • The Batista procedure's effect on left ventricular function is debated.
  • Patient outcomes vary, necessitating a clearer understanding of the procedure's impact.

Purpose of the Study:

  • To mathematically model the Batista procedure's effects on stroke volume and myocardial wall stress.
  • To investigate preoperative end-systolic stress as a predictor of postoperative function.

Main Methods:

  • A spherical membrane model of the ventricle was used to analyze the Batista procedure.
  • The model assessed how ventricular dilatation influences pressure-volume relationships.

Main Results:

  • Ventricle performance improves with initial dilatation but declines sharply beyond a critical point.
  • The Batista procedure can reduce myocardial stress and improve stroke volume in severely dilated ventricles.
  • End-systolic stress indicates proximity to critical dilatation.

Conclusions:

  • The Batista procedure has a theoretical basis for improving cardiac function in specific patients.
  • Myocardial resection decreases wall stress and may enhance stroke volume in dilated, depressed ventricles.
  • Patients with high end-systolic stress are likely to benefit most from the Batista procedure.