Which of the following statements is true about anticoagulants such as Heparin?

Anticoagulants like Heparin are medications that help prevent the formation of blood clots. Their primary function is to interfere with the clotting process, making them essential in treating conditions where there is a risk of excessive clotting, such as venous thromboembolism or certain cardiovascular conditions. Therefore, using anticoagulants to treat hypercoagulable states, where the blood has an increased tendency to clot, showcases their therapeutic purpose.

The other statements do not accurately reflect the role of anticoagulants. Promoting clotting runs counter to the fundamental action of anticoagulants. Increasing blood pressure is generally not a function associated with Heparin; instead, anticoagulants can influence hemodynamics in different ways. Lastly, while Heparin and other anticoagulants might indirectly affect oxygen transport due to their role in preventing clots in relevant blood vessels, they do not directly reduce oxygen transport as a primary action.