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Abstract
This prospective study of 36 adult patients undergoing cardiopulmonary bypass (CPB)
was conducted to determine the utility of thromboelastography (TEG) versus platelet
studies (bleeding time, platelet count, mean platelet volume) and standard coagulation
tests (prothrombin time, activated partial thromboplastin time, fibrinogen) to more
effectively discriminate patients likely to benefit from platelet or fresh frozen
plasma (FFP) transfusion. Although the sensitivities of the bleeding time (71.4%)
and platelet count (100%) were similar to the TEG (71.4%), the specificity (89.3%)
of the TEG was greater than that of the bleeding time (78.5%) and platelet count (53.6%).
Seven patients experienced clinically significant hemorrhage; 5 (71.4%) had an abnormal
TEG. Three of 8 (38%) other patients with an abnormal TEG had no abnormal bleeding.
Only 2 of 27 (7.4%) patients with a normal TEG had abnormal bleeding requiring platelet
or FFP transfusion. Therefore, it is suggested that post-CPB patients with a normal
TEG should not receive platelet or FFP transfusions empirically. If excessive bleeding
is noted in a patient with a normal TEG, this suggests a surgically correctable etiology.
Data from this series suggest that patients displaying an abnormal TEG appear to be
at increased risk for hemorrhage; therefore, appropriate blood product support should
be initiated at the first sign of accelerated bleeding.
Keywords
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Footnotes
☆This is a US government work. There are no restrictions on its use
☆☆This is a US government work. There are no restrictions on its use. The views expressed in this article are those of the authors and do not reflect the official policy of the Department of Defense or other Departments of the US Government.
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© 1993 Published by Elsevier Inc.