The formula to calculate the Adjusted Dosage (AD) of Coumadin is:
\[ \text{AD} = \frac{\text{ID} \cdot \text{INRt}}{\text{INRc}} \]
Where:
A Coumadin adjustment refers to the process of altering the dosage of the medication Coumadin (also known as warfarin), which is an anticoagulant used to prevent blood clots. This adjustment is typically made based on the results of a patient's blood test, specifically the International Normalized Ratio (INR), which measures the time it takes for blood to clot. If the INR is too high, the patient is at risk of bleeding, and if it's too low, they are at risk of developing blood clots. Therefore, the dosage of Coumadin may need to be increased or decreased to maintain a safe and effective INR range.
Let's consider an example:
Using the formula to calculate the Adjusted Dosage:
\[ \text{AD} = \frac{5 \cdot 2.5}{2.0} = 6.25 \, \text{mg} \]
This demonstrates that with an initial dosage of 5 mg, a target INR of 2.5, and a current INR of 2.0, the adjusted dosage would be 6.25 mg.
