NAPLEX (North American Pharmacist Licensure Examination) Practice Exam

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What is the correction factor for 1 unit of regular insulin using the 1500 rule?

1500/TDD
1800/TDD
TDD/1500
TDD/1800

The correct answer is: 1500/TDD

The 1500 rule is a commonly used method to calculate the insulin dose for a patient with type 2 diabetes. It takes into account the patient's total daily dose (TDD) of insulin and divides it by 1500 to determine the correction factor. This factor then helps determine the amount of insulin needed to correct high blood sugar levels. Option B, 1800/TDD, is incorrect because it is the inverse of the correct calculation. Similarly, option C, TDD/1500, is incorrect because it uses the incorrect order of division. Option D, TDD/1800, is also incorrect for the same reasons as option C. It is important to use the correct calculation to ensure accurate insulin dosing for patients.