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Ann Thorac Surg 1976;21:55-58
© 1976 The Society of Thoracic Surgeons

Articles

The Extracorporeal Pump Filter—Saint or Sinner?

R. Heimbecker, M.D.*, A. Robert, C.P., F.N. McKenzie, M.D.

University Hospital, London, Ont, Canada

Accepted for publication August 8, 1975.

* Address reprint requests to Dr. Heimbecker, University Hospital, London, Ont, Canada

An arterial line filter can become a grave source of platelet and fibrin destruction, with widespread deposition on the filter to form a membrane across the mesh, as proved by careful scanning electron microscopy.

The same filter, when subjected to the low flows of the cardiotomy line, was well tolerated and served a very useful function. There was a 260% improvement in platelet counts and a 170% reduction in chest drainage when the arterial line filter was not used, perhaps through elimination of a degree of consumptive coagulopathy. Neurological changes did not occur in the absence of the arterial line filter, and operative mortality was 4.8% (5 of 103 patients).




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