IN RESPONSE:
To address the questions raised by Dr. Adelman and others, the dose-adjustment algorithms used in our study are presented in the (Figure 1). Patients received 5 mg or 10 mg of warfarin on day 1 and day 2; the day 2 dose was reduced only if an excess anticoagulant effect was seen on the INR determination performed 12 to 16 hours after the first warfarin dose was given. The third and subsequent warfarin doses were based on the INR response and were adjusted according to the appropriate algorithm. The mean warfarin doses administered in the 5-mg group were ...
References
- 1. Landefeld CS, Beyth RJ. Anticoagulant-related bleeding; clinical epidemiology, prediction, and prevention. Am J Med. 1993; 95:315-28. Google Scholar
- 2. Pengo V, Banzato A, Garelli E, Zasso A, Biasiolo A. Reversal of excessive effect of regular anticoagulation: low oral dose of phytonadione (vitamin Kl) compared with warfarin discontinuation. Blood Coag Fibrinol. 1993; 4:739-41. Google Scholar
Author, Article, and Disclosure Information
Hamilton Civic Hospitals Research Centre; Hamilton, Ontario L8V lC3, Canada

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