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The use of the Hemochron in assessment of heparin reversal after cardiopulmonary bypass

TL Hooper

Freeman Hospital, Newcastle-upon-Tyne

J. Conroy

Freeman Hospital, Newcastle-upon-Tyne

B. McArdle

Freeman Hospital, Newcastle-upon-Tyne

A. Dell

Freeman Hospital, Newcastle-upon-Tyne

B. Watson

Freeman Hospital, Newcastle-upon-Tyne

DT Pearson

Freeman Hospital, Newcastle-upon-Tyne

PJ Kesteven

Freeman Hospital, Newcastle-upon-Tyne

The use of the Hemochron activated clotting time (ACT) for determining adequacy of reversal of heparin following cardiopulmonary bypass was evaluated in 20 patients and compared with standard laboratory tests of coagulation. The commonly used Celite ACT method proved too insensitive to have any useful predictive value in detecting or quantifying residual heparin and removal of the Celite activation rendered the test even less sensitive. In contrast, the partial thromboplastin time with kaolin (PTTK) proved to correlate well with residual heparin (r = 0.79). It is, therefore, recommended that the use of the Hemochron following protamine administration be abandoned in favour of the PTTK.

Perfusion, Vol. 3, No. 4, 295-300 (1988)
DOI: 10.1177/026765918800300407
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Perfusion, January 1, 1990; 5(1_suppl): 53 - 56.
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