Which of the following is an example of an anticoagulant used in the treatment of unstable angina or NSTEMI?

Dalteparin is a low molecular weight heparin that is commonly used as an anticoagulant in various clinical settings, including the treatment of unstable angina and non-ST-elevation myocardial infarction (NSTEMI). Its mechanism involves the inhibition of factor Xa and, to a lesser extent, factor IIa (thrombin), which helps to prevent the formation of blood clots and thus reduces the risk of myocardial infarction in these patients.

In the context of unstable angina and NSTEMI, anticoagulants like dalteparin play a vital role in managing the condition by preventing thrombus formation in the coronary arteries, which minimizes the risk of ischemic events. This is particularly important as these conditions are often characterized by the presence of unstable plaques and potential clot formation.

Other agents listed, such as clopidogrel and abciximab, are antiplatelet medications rather than anticoagulants. Clopidogrel functions by inhibiting platelet aggregation, while abciximab is a glycoprotein IIb/IIIa inhibitor that prevents platelet activation and aggregation, also addressing ischemic events but through a different mechanism. Aspirin, too, is primarily an antiplatelet agent that inhibits