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Effect of Trillium^TM Biopassive Surface coating of the oxygenator on platelet count drop during cardiopulmonary bypass

Lehigh Valley Hospital, Allentown, Pennsylvania, David.Palanzo{at}LVH.com

Debra L Zarro

Lehigh Valley Hospital, Allentown, Pennsylvania

Ralph M Montesano

Lehigh Valley Hospital, Allentown, Pennsylvania

Norman J Manley

Lehigh Valley Hospital, Allentown, Pennsylvania

Michael Quinn

Lehigh Valley Hospital, Allentown, Pennsylvania

Barbara-Anne Elmore

Lehigh Valley Hospital, Allentown, Pennsylvania

Patricia A Gustafson

Lehigh Valley Hospital, Allentown, Pennsylvania

Joseph M Castagna

Lehigh Valley Hospital, Allentown, Pennsylvania

The new Trillium^TM Biopassive Surface is a coating designed to minimize the adsorption of protein and the attachment of cells. In previous studies, we were able to demonstrate that, by coating the bypass circuit with small amounts of albumin, the drop in circulating platelet count seen with the newer low-prime hollow-fiber membrane oxygenators is eliminated.

A study was undertaken to compare the Avecor Affinity^TM oxygenator with albumin in the prime with the Trillium-coated Affinity. Fifty-six patients undergoing nonemergency open-heart surgery were randomly divided into two groups. One group (Albumin) received the Affinity oxygenator with 10 ml of 25% albumin added to the pump prime. The other group (Trillium) received the Trillium-coated Affinity oxygenator. To normalize the data for the effects of hemodilution, the mean net platelet count drop on bypass was calculated for each group. The Albumin group had a net platelet count drop of 0.81 ± 9.78%, while the Trillium group had a drop of 1.58 ± 13.0%. There was no significant statistical difference between the two groups.

From our investigation, we concluded that Trillium Biopassive Surface coating affords the Affinity oxygenator the same protective effects on circulating platelet counts as adding albumin to the prime.

Perfusion, Vol. 14, No. 6, 473-479 (1999)
DOI: 10.1177/026765919901400610


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