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Related Experiment Videos

Misplaced caval filter and subsequent pericardial tamponade.

S J Lahey1, L P Meyer, A W Karchmer

  • 1Division of Cardiothoracic Surgery, New England Deaconess Hospital, Boston, Massachusetts.

The Annals of Thoracic Surgery
|February 1, 1991
PubMed
Summary

The Greenfield filter is a reliable method for preventing pulmonary emboli, but misplacement can cause severe complications. One case involved acute pericardial tamponade requiring complex surgical intervention for filter retrieval.

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Area of Science:

  • Cardiovascular Surgery
  • Medical Device Safety
  • Pulmonary Embolism Prevention

Background:

  • The Greenfield filter is a standard device for partial caval interruption, aiming to prevent pulmonary emboli.
  • While generally safe, various complications associated with Greenfield filter placement have been documented.

Observation:

  • A rare but near-fatal complication involving acute pericardial tamponade occurred due to Greenfield filter misplacement.
  • The filter was lodged in an unusual anatomical location, necessitating an extensive retrieval procedure.

Findings:

  • Retrieval of the misplaced Greenfield filter demanded cardiopulmonary bypass.
  • The complex retrieval also required profound hyperthermia and circulatory arrest to manage the critical situation.

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Implications:

  • This case highlights the potential for severe complications even with established medical devices.
  • It underscores the importance of precise device placement and the need for advanced surgical techniques in managing misplacement events.
  • Enhanced vigilance and potential modifications in implantation techniques may be warranted to improve patient safety.