A nurse is caring for a client who has deep vein thrombosis and is receiving enoxaparin therapy subcutaneously once daily at home. The nurse should instruct the client to report which of the following findings immediately?
Bruising at injection site
Redness at injection site
Swelling in one leg
Mild pain at injection site.
The Correct Answer is C
This is because swelling in one leg could indicate a new or worsening deep vein thrombosis (DVT), which is a serious condition that can lead to pulmonary embolism or other complications. The client should report this finding to the provider immediately and seek medical attention.
Choice A) Bruising at injection site is wrong because bruising is a common and expected side effect of enoxaparin therapy, especially if the client is using the same injection site repeatedly.
The client should be instructed to rotate the injection sites and apply gentle pressure after each injection to minimize bruising.
Choice B) Redness at injection site is wrong because redness is also a common and expected side effect of enoxaparin therapy, as it indicates a local inflammatory response to the medication.
The client should be advised to avoid rubbing or scratching the injection site and to apply a cold compress if needed.
Choice D) Mild pain at injection site is wrong because mild pain is also a common and expected side effect of enoxaparin therapy, as it reflects the needle insertion and the medication delivery.
The client should be reassured that the pain will subside shortly and to use a different injection site for the next dose.
Normal ranges for enoxaparin therapy are based on the client’s weight, indication, and renal function.
The usual dose for DVT prophylaxis is 40 mg subcutaneously once daily, and the usual dose for DVT treatment is 1 mg/kg subcutaneously every 12 hours.
The client should have regular blood tests to monitor the anti-factor Xa level, which should be between 0.5 and 1.0 IU/mL for DVT prophylaxis and between 0.6 and 1.0 IU/mL for DVT treatment.
The client should also have regular platelet counts to check for heparin-induced thrombocytopenia (HIT), which is a rare but serious complication of enoxaparin therapy that causes a drop in platelets and an increased risk of thrombosis.
The normal platelet count range is 150,000 to 450,000/mm3.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
The correct answer is choice A) Activated partial thromboplastin time (aPTT).This is because aPTT is the most commonly used laboratory test to monitor the therapeutic effect of heparin therapy.
Heparin is an anticoagulant that inhibits the formation of thrombin and fibrin, which are essential for blood clotting.Heparin therapy is indicated for the treatment of deep vein thrombosis (DVT), which is a condition where blood clots form in the deep veins of the legs or pelvis.
Choice B) Prothrombin time (PT) is wrong because PT is used to monitor the therapeutic effect of warfarin therapy, not heparin therapy.
Warfarin is another anticoagulant that inhibits the synthesis of vitamin K-dependent clotting factors.Warfarin therapy is also indicated for the treatment of DVT, but it has a different mechanism of action and monitoring than heparin therapy.
Choice C) International normalized ratio (INR) is wrong because INR is a standardized way of reporting PT results that accounts for the variability of different laboratory methods.INR is also used to monitor the therapeutic effect of warfarin therapy, not heparin therapy.
Choice D) Platelet count is wrong because platelet count is not directly affected by heparin therapy.However, platelet count should be monitored periodically in patients receiving heparin therapy to detect heparin-induced thrombocytopenia (HIT), which is a rare but serious complication of heparin therapy that causes a drop in platelet count and an increased risk of thrombosis.
Choice E) Hemoglobin is wrong because hemoglobin is not directly affected by heparin therapy.However, hemoglobin should be monitored periodically in patients receiving heparin therapy to detect bleeding complications, which are the most common adverse effects of heparin therapy.
The normal range for aPTT is 25 to 35 seconds, but the therapeutic range for heparin therapy is usually 1.5 to 2.5 times the normal range, depending on the indication and protocol.
The normal range for PT is 11 to 13 seconds, and the therapeutic range for warfarin therapy is usually an INR of 2 to 3, depending on the indication and protocol
Correct Answer is C
Explanation
Warfarin is an anticoagulant that inhibits the synthesis of vitamin K-dependent clotting factors. The INR is a standardized measure of the prothrombin time (PT), which reflects the degree of anticoagulation.The therapeutic range for INR is 2 to 3 for most conditions, and higher for some mechanical heart valves.
Choice A) Activated partial thromboplastin time (aPTT) is wrong because it is used to monitor heparin therapy, not warfarin therapy.
Heparin is another anticoagulant that works by activating antithrombin III, which inhibits thrombin and factor Xa.The therapeutic range for aPTT is 1.5 to 2.5 times the normal value, which is 30 to 40 seconds.
Choice B) Prothrombin time (PT) is wrong because it is not a standardized measure of the warfarin effect.
The PT can vary depending on the reagents and methods used by different laboratories.The INR was developed to eliminate this variability and provide a consistent measure of the warfarin effect.
Choice D) Platelet count is wrong because it is not affected by warfarin therapy.
Warfarin does not affect the number or function of platelets, only the clotting factors.Platelet count can be used to monitor other conditions that affect hemostasis, such as thrombocytopenia or thrombocytosis.
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