Which condition is often treated by adjusting warfarin based on INR levels?

Atrial fibrillation is a common condition often treated by adjusting warfarin based on International Normalized Ratio (INR) levels because it increases the risk of thromboembolic events, such as strokes. Warfarin is an anticoagulant medication that helps prevent blood clots, but its efficacy and safety are heavily influenced by the INR, which measures how quickly blood clots. Maintaining the INR within a therapeutic range is critical to balancing the risk of clotting versus bleeding complications.

In patients with atrial fibrillation, healthcare providers routinely monitor INR levels to adjust the dosage of warfarin accordingly. This monitoring helps ensure that the patient receives adequate anticoagulation without reaching dangerous levels that could lead to excessive bleeding. In contrast, the other conditions listed—hypertension, hyperlipidemia, and diabetes—are generally managed through different types of medications, lifestyle changes, or other interventions that do not involve INR monitoring or warfarin therapy.