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Related Experiment Videos

A method to avoid annular downsizing during knot tying.

Francesco Maisano1, Andrea Blasio, Alessandro Caldarola

  • 1Department of Cardiac Surgery, San Raffaele Hospital, Milan, Italy. francesco.maisano@hsr.it

The Annals of Thoracic Surgery
|October 7, 2004
PubMed
Summary

Pericardial annuloplasty offers an alternative to prosthetic annuloplasty, but risks tissue cinching. A modified knot-tying technique prevents complications like mitral stenosis and systolic anterior motion.

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Area of Science:

  • Cardiac Surgery
  • Surgical Techniques
  • Cardiovascular Research

Background:

  • Pericardial annuloplasty is an alternative to prosthetic annuloplasty.
  • A known drawback is tissue cinching during knot tying.
  • This can lead to uncontrolled downsizing and complications.

Purpose of the Study:

  • To describe a modification in knot-tying sequence.
  • To prevent tissue cinching during pericardial annuloplasty.
  • To avoid complications such as mitral stenosis and systolic anterior motion.

Main Methods:

  • A simple modification to the standard knot-tying sequence was developed.
  • This technique was applied during pericardial annuloplasty procedures.
  • The modification focuses on the order of knot placement.

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Main Results:

  • The modified technique effectively prevents tissue cinching.
  • Uncontrolled downsizing of the annulus was avoided.
  • Complications like mitral stenosis and systolic anterior motion were prevented.

Conclusions:

  • A simple modification in knot-tying sequence is effective.
  • This technique mitigates risks associated with pericardial annuloplasty.
  • It enhances the safety and efficacy of pericardial annuloplasty.