Practice question from Insulin Dosing & Titration

Fill-in: The insulin sensitivity factor using the standard rule for rapid-acting insulin is calculated as ____ divided by TDD.

Answer

1800

Explanation

The 1800 rule is used to estimate the insulin sensitivity factor (ISF) for rapid-acting insulins (lispro, aspart, glulisine): 1800 ÷ TDD = mg/dL glucose drop per 1 unit of insulin. The 1500 rule is typically used for regular insulin.

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