Welcome aspiring nurses! As you gear up to conquer the NCLEX, understanding how to answer NCLEX questions on Anticoagulant Therapy, aPTT is critical to your success. Let’s dive in.
Question: A nurse is caring for a patient with a history of deep vein thrombosis. The healthcare provider orders a laboratory test to assess the patient’s coagulation status. Which laboratory test is most appropriate for evaluating intrinsic pathway coagulation?
A) Prothrombin Time (PT)
B) International Normalized Ratio (INR)
C) Activated Partial Thromboplastin Time (aPTT)
D) Bleeding Time
E) Platelet Count
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Rationale: The activated partial thromboplastin time (aPTT) primarily assesses the intrinsic pathway of coagulation. This pathway involves factors within the blood, and the aPTT measures the time it takes for blood to clot after activating this pathway. This test is particularly relevant for monitoring heparin therapy, which affects the intrinsic pathway. Prothrombin Time (PT) and International Normalized Ratio (INR) mainly evaluate the extrinsic pathway, while Bleeding Time and Platelet Count assess platelet function and quantity, respectively.
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A patient diagnosed with hemophilia A is admitted to the hospital. The nurse is preparing to administer clotting factor VIII replacement therapy. Which laboratory test is essential for monitoring the effectiveness of this treatment?
A) Prothrombin Time (PT)
B) International Normalized Ratio (INR)
C) Activated Partial Thromboplastin Time (aPTT)
D) Fibrinogen Level
E) Complete Blood Count (CBC)
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Rationale: Clotting factor VIII is involved in the intrinsic pathway of coagulation, and its replacement is crucial for patients with hemophilia A. The activated partial thromboplastin time (aPTT) reflects the functioning of the intrinsic pathway, making it the appropriate test for monitoring the effectiveness of clotting factor VIII replacement therapy. Prothrombin Time (PT) and International Normalized Ratio (INR) primarily assess the extrinsic pathway. Fibrinogen Level and Complete Blood Count (CBC) focus on different aspects of blood composition.
4000 Free NCLEX Questions
NCLEX Questions Critical Thinking: Anticoagulant Therapy, aPTT Symptoms
1000 Medical-Surgical Questions
A nurse is caring for a patient receiving unfractionated heparin therapy for deep vein thrombosis prophylaxis. The healthcare provider orders regular monitoring of the patient’s anticoagulant therapy. Which laboratory test is specifically used to monitor unfractionated heparin therapy?
A) Prothrombin Time (PT)
B) International Normalized Ratio (INR)
C) Activated Partial Thromboplastin Time (aPTT)
D) Platelet Count
E) D-dimer Level
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Rationale: Unfractionated heparin primarily affects the intrinsic pathway of coagulation. The activated partial thromboplastin time (aPTT) is the standard laboratory test for monitoring the therapeutic range of unfractionated heparin. Prothrombin Time (PT) and International Normalized Ratio (INR) are more relevant for monitoring warfarin therapy (a vitamin K antagonist). Platelet Count assesses platelet quantity, and D-dimer Level is indicative of fibrinolysis, not specific to heparin therapy.
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NCLEX Review: Anticoagulant Therapy, aPTT Disease Treatments
A nurse is caring for a patient admitted with a suspected bleeding disorder. The healthcare provider orders a laboratory test to assess the intrinsic pathway of coagulation. Which test would the nurse anticipate to be ordered for this purpose?
A) Prothrombin Time (PT)
B) International Normalized Ratio (INR)
C) Activated Partial Thromboplastin Time (aPTT)
D) Platelet Count
E) Bleeding Time
Rationale: The activated partial thromboplastin time (aPTT) is used to assess the intrinsic pathway of coagulation, making it a valuable test for evaluating bleeding disorders. It measures the time it takes for blood to clot after activating this pathway. Prothrombin Time (PT) and International Normalized Ratio (INR) primarily assess the extrinsic pathway, while Platelet Count evaluates platelet quantity, and Bleeding Time assesses platelet function.
1000 HESI Exit Questions
NCLEX Focus Exploring Anticoagulant Therapy, aPTT: Causes and Diagnosis
A patient with a history of deep vein thrombosis is receiving heparin therapy. The nurse is responsible for monitoring the patient’s response to heparin. Which laboratory test is specifically used to monitor the therapeutic range of unfractionated heparin?
A) Prothrombin Time (PT)
B) International Normalized Ratio (INR)
C) Activated Partial Thromboplastin Time (aPTT)
D) Platelet Count
E) D-dimer Level
Rationale: Unfractionated heparin primarily affects the intrinsic pathway of coagulation. The activated partial thromboplastin time (aPTT) is the standard laboratory test for monitoring the therapeutic range of unfractionated heparin. Prothrombin Time (PT) and International Normalized Ratio (INR) are more relevant for monitoring warfarin therapy (a vitamin K antagonist). Platelet Count assesses platelet quantity, and D-dimer Level is indicative of fibrinolysis, not specific to heparin therapy.
NCLEX Questions: Focus on Medications for Anticoagulant Therapy, aPTT
1000 Medical-Surgical Questions
A postoperative patient is at risk for disseminated intravascular coagulation (DIC). The healthcare provider orders a laboratory test to assess the patient’s coagulation status comprehensively. Which test is most appropriate for evaluating both intrinsic and extrinsic pathways of coagulation?
A) Prothrombin Time (PT)
B) International Normalized Ratio (INR)
C) Activated Partial Thromboplastin Time (aPTT)
D) Fibrinogen Level
E) Thrombin Time
Rationale: Thrombin Time assesses the conversion of fibrinogen to fibrin, providing a comprehensive evaluation of both intrinsic and extrinsic pathways of coagulation. While aPTT and PT/INR focus on individual pathways, Thrombin Time encompasses the final common pathway. Fibrinogen Level directly measures fibrinogen, a crucial component in clot formation. This makes Thrombin Time a valuable test for assessing coagulation status in patients at risk for DIC, where multiple pathways may be activated simultaneously.
NCLEX Practice Questions: Understanding Anticoagulant Therapy, aPTT Causes and Symptoms
60-Day NCLEX Challenge
A patient with a history of atrial fibrillation is prescribed warfarin for anticoagulation therapy. The nurse is responsible for monitoring the patient’s response to warfarin. Which laboratory test is specifically used to monitor warfarin therapy and assess the extrinsic pathway of coagulation?
A) Prothrombin Time (PT)
B) International Normalized Ratio (INR)
C) Activated Partial Thromboplastin Time (aPTT)
D) Platelet Count
E) Fibrinogen Level
Rationale: Warfarin primarily affects the extrinsic pathway of coagulation. The International Normalized Ratio (INR) is a standardized measure of PT, providing a consistent assessment of warfarin’s anticoagulant effect. aPTT is more relevant for monitoring heparin therapy, while Platelet Count and Fibrinogen Level assess different aspects of blood composition.
Understanding the Anticoagulant Therapy, aPTT: NCLEX Delegation Questions
1000 HESI Exit Questions
A patient admitted with deep vein thrombosis is started on unfractionated heparin therapy. The nurse is responsible for monitoring the therapeutic range of heparin. Which laboratory test is specifically used to monitor unfractionated heparin therapy and assess the intrinsic pathway of coagulation?
A) Prothrombin Time (PT)
B) International Normalized Ratio (INR)
C) Activated Partial Thromboplastin Time (aPTT)
D) Platelet Count
E) D-dimer Level
Rationale: Unfractionated heparin primarily affects the intrinsic pathway of coagulation. The activated partial thromboplastin time (aPTT) is the standard laboratory test for monitoring the therapeutic range of unfractionated heparin. PT/INR is more relevant for warfarin therapy, Platelet Count assesses platelet quantity, and D-dimer Level is indicative of fibrinolysis, not specific to heparin therapy.
Understanding Anticoagulant Therapy, aPTT: NCLEX Priority Questions
A patient is diagnosed with hemophilia B and requires factor IX replacement therapy. The nurse is preparing to administer the replacement factor. Which laboratory test is essential for monitoring the effectiveness of factor IX replacement therapy and assessing the intrinsic pathway of coagulation?
A) Prothrombin Time (PT)
B) International Normalized Ratio (INR)
C) Activated Partial Thromboplastin Time (aPTT)
D) Platelet Count
E) Thrombin Time
Rationale: Factor IX is involved in the intrinsic pathway of coagulation. The activated partial thromboplastin time (aPTT) is the appropriate test for monitoring the effectiveness of factor IX replacement therapy, as it assesses the intrinsic pathway. PT/INR primarily assess the extrinsic pathway, Platelet Count evaluates platelet quantity, and Thrombin Time focuses on the final common pathway.
A patient undergoing cardiac surgery is at risk for both bleeding and clotting complications. The healthcare provider orders a comprehensive coagulation assessment. Which laboratory test is most appropriate for evaluating both intrinsic and extrinsic pathways of coagulation?
A) Prothrombin Time (PT)
B) International Normalized Ratio (INR)
C) Activated Partial Thromboplastin Time (aPTT)
D) Fibrinogen Level
E) Thrombin Time
Rationale: Prothrombin Time (PT) assesses the extrinsic pathway of coagulation, providing a comprehensive evaluation of both intrinsic and extrinsic pathways. While aPTT focuses on the intrinsic pathway, PT evaluates factors involved in the extrinsic pathway leading to the common final pathway of clot formation. Fibrinogen Level is not as comprehensive, and Thrombin Time is more specific to the final common pathway. Therefore, PT is the most appropriate test for a comprehensive coagulation assessment in this scenario.
