Method and apparatus for monitoring anti-platelet agents
First Claim
1. An apparatus for measuring the efficacy of an anti-platelet therapy comprising:
- a blood coagulation analyzer operable to measure a first blood sample in the absence of the anti-platelet therapy and a second blood sample in the presence of the anti-platelet therapy to respectively generate a first blood coagulation parameter and a second blood coagulation parameter, wherein the first blood coagulation parameter and the second blood coagulation parameter are related to blood clot strength; and
a processor operatively coupled to the blood coagulation analyzer, the processor having an associated control program for directing the operation of the processor for determining an efficacy of the anti-platelet therapy based upon the first blood coagulation parameter and the second blood coagulation parameter, wherein at least one of the first blood coagulation parameter and the second blood coagulation parameter is based upon a characteristic of an as sampled portion of the respective blood sample and a characteristic of a portion of the respective blood sample treated in vitro to inhibit thrombin activation and to preserve fibrinogen and platelet activation.
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Accused Products
Abstract
A blood coagulation analyzer, such as the Thrombelastograph® (TEG®) blood coagulation analyzer is utilized to measure continuously in real time, the clotting process from the initial fibrin formation, through platelet-fibrin interaction and lysis to generate blood coagulation parameters. The measured blood coagulation parameters permit confirmation of the attainment of therapeutic level of GPIIb/IIIa receptor blockade; individualized dosing assessment to evaluate attainment of adequate GPIIb/IIIa receptor blockade; individualized dosing assessment required to reach adequate GPIIb/IIIa receptor blockade; illustration of the rate of diminishment of platelet inhibition or inhibition recovery after treatment with platelet-inhibition drugs; evaluation of the interaction effect of a combination of thrombolytic or any other agents or conditions effecting hemostasis and platelet-inhibiting agents on patient hemostasis.
84 Citations
20 Claims
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1. An apparatus for measuring the efficacy of an anti-platelet therapy comprising:
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a blood coagulation analyzer operable to measure a first blood sample in the absence of the anti-platelet therapy and a second blood sample in the presence of the anti-platelet therapy to respectively generate a first blood coagulation parameter and a second blood coagulation parameter, wherein the first blood coagulation parameter and the second blood coagulation parameter are related to blood clot strength; and
a processor operatively coupled to the blood coagulation analyzer, the processor having an associated control program for directing the operation of the processor for determining an efficacy of the anti-platelet therapy based upon the first blood coagulation parameter and the second blood coagulation parameter, wherein at least one of the first blood coagulation parameter and the second blood coagulation parameter is based upon a characteristic of an as sampled portion of the respective blood sample and a characteristic of a portion of the respective blood sample treated in vitro to inhibit thrombin activation and to preserve fibrinogen and platelet activation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of measuring the efficacy of an anti-platelet therapy comprising the steps of:
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providing a blood coagulation analyzer, the blood coagulation analyzer capable of measuring a clot strength;
determining a first blood coagulation parameter of a first blood sample obtained in the absence of the anti-platelet therapy using the blood coagulation analyzer;
determining a second blood coagulation parameter of a second blood sample obtained in the presence of the anti-platelet therapy using the blood coagulation analyzer;
wherein at least one of the first blood coagulation parameter and the second blood coagulation parameter is based upon a characteristic of an as sampled portion of the respective blood sample and a characteristic of a portion of the respective blood sample treated in vitro to inhibit thrombin activation and to preserve fibrinogen and platelet activation; and
determining an efficacy of the anti-platelet therapy based on the first and second blood coagulation parameters. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification