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Updated: Jul 28, 2026

The WATCHMAN Left Atrial Appendage Closure Device for Atrial Fibrillation
Published on: February 28, 2012
Predicting patients' warfarin requirements
In 34 patients undergoing anticoagulant therapy with warfarin a close relationship has been observed between the logarithm of the 'Thrombotest' response to a loading dose (10 mg/day for three days) and the maintenance dose required to achieve an anticoagulant response of 8-12% (thrombo-test). This relationship appears to be close enough to enable maintenance dosages to be predicted.
In 34 patients undergoing anticoagulant therapy with warfarin a close relationship has been observed between the logarithm of the 'Thrombotest' response to a loading dose (10 mg/day for three days) and the maintenance dose required to achieve an anticoagulant response of 8-12% (thrombo-test). This relationship appears to be close enough to enable maintenance dosages to be predicted.
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