British Journal of Anaesthesia, 1992, Vol. 69, No. 2 159-161
© 1992 The Board of Management and Trustees of the British Journal of Anaesthesia
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THROMBELASTOGRAPHY AFTER ASPIRIN INGESTION IN PREGNANT AND NON-PREGNANT SUBJECTS

1Department of Anaesthetics, Faculty of Medicine, University of Natal Durban, South Africa
2Department of Obstetrics and Gynaecology, Faculty of Medicine, University of Natal Durban, South Africa
Address for correspondence: University of Natal, Faculty of Medicine, Department of Anaesthetics, PO Box 17039, Congella 4013, Durban, South Africa.
The thrombelastograph (TEG) and bleeding time were performed before and 6 h after a single oral dose of aspirin 600 mg in a group of eight healthy volunteers and 12 pregnant patients. Measured TEG variables (r, k, r + k times and maximum amplitude) were unaltered after aspirin although there was a significant prolongation of the bleeding time in both groups. Although the TEG appeared not to detect aspirin-induced changes in platelet function, the TEG measures all phases of coagulation and the unaltered TEG after aspirin suggested a functioning coagulation system.
*Present address: Department of Anaesthetics, Royal Sussex County Hospital, Brighton BN25 BE.
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