Cardiac Vascular Nursing Certification Practice Exam 2025 - Free Cardiac Vascular Nursing Practice Questions and Study Guide

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What is the normal activated Partial Thromboplastin Time (aPTT) level range?

15-25 seconds

25-39 seconds

The normal activated Partial Thromboplastin Time (aPTT) range is indeed 25-39 seconds. The aPTT is a blood test that measures the time it takes for blood to clot and is commonly used to evaluate the intrinsic and common pathways of the coagulation cascade. In clinical settings, this test is particularly important for monitoring patients on anticoagulant therapy, such as heparin, as it helps ensure that anticoagulation is effective while minimizing the risk of bleeding.

Values within the 25-39 seconds range are considered normal, indicating that the coagulation factors are functioning properly without any underlying issues that would prolong clotting time. Values outside this range may suggest various conditions, including clotting disorders or the effects of anticoagulant medications. Understanding the significance of the aPTT value helps healthcare professionals make informed decisions regarding patient management in a variety of clinical scenarios.

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40-60 seconds

60-80 seconds

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