National Dental Examining Board of Canada (NDEB) Practice Exam

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The therapeutic INR for a-fib is:

  1. 1-2

  2. 2-3

  3. 3-4

  4. 4-5

The correct answer is: 2-3

The therapeutic INR (International Normalized Ratio) for a-fib (atrial fibrillation) is usually set between 2 and 3. This range allows for effective blood thinning without increasing the risk of bleeding. Option A (1-2) may be too low and may not adequately prevent blood clots, while options C (3-4) and D (4-5) may be too high and may increase the risk of bleeding. It is important to consult with a healthcare provider to determine the exact therapeutic INR for each individual patient, as it may vary based on their specific medical history and condition.

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