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A patient with heparin should have a PTT of 1.5-2 times the normal range, which is 25-35 seconds.

a. 30-40 seconds
b. 20-25 seconds
c. 40-50 seconds
d. 50-60 seconds

Answer :

Final answer:

The therapeutic PTT range for a patient on heparin is 1.5-2 times the normal range (25-35 seconds), which gives us a range of about 52.5 to 70 seconds. The closest answer choice to this range is 50-60 seconds (option d).

Explanation:

The student is asking about the target partial thromboplastin time (PTT) for a patient who is being treated with heparin. The normal PTT range is 25-35 seconds, and the therapeutic range for someone on heparin is typically 1.5-2 times the normal range. To calculate this, we multiply the high end of the normal range (35 seconds) by 1.5 and 2 to get the therapeutic range: 52.5 seconds (1.5 times) and 70 seconds (2 times).

Therefore, the correct therapeutic range for PTT in a patient on heparin would be between 52.5 and 70 seconds, which is not offered in the options. However, the closest correct answer that falls within the therapeutic range is 50-60 seconds (option d).

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