A nurse on a telemetry unit is reviewing the laboratory results for a client who has atrial fibrillation and is taking warfarin. Which of the following laboratory values should the nurse report to the provider?
Hemoglobin (Hgb) : 16 g/dL
Prothrombin Time (PT) : 45 seconds
Activated Partial Thromboplastin Time (aPTT) : 36 seconds
Platelets : 190,000/mm
The Correct Answer is B
Choice A reason : A hemoglobin (Hgb) level of 16 g/dL is within the normal range for adults, which typically falls between 13.8 to 17.2 g/dL for men and 12.1 to 15.1 g/dL for women. Therefore, this value does not warrant reporting to the provider as it does not indicate an immediate concern.
Choice B reason : A prothrombin time (PT) of 45 seconds is significantly higher than the normal range of 11 to 13.5 seconds for individuals not on anticoagulation therapy. For patients on warfarin, the target PT is usually 1.5 to 2 times the normal value, depending on the indication for therapy. However, a PT of 45 seconds suggests a high risk of bleeding and requires immediate medical attention.
Choice C reason : The activated partial thromboplastin time (aPTT) of 36 seconds is within the normal range of approximately 21 to 35 seconds⁸. This result indicates that the blood's intrinsic clotting pathway is functioning within expected parameters and does not need to be reported.
Choice D reason : A platelet count of 190,000/mm is within the normal range, which is typically 150,000 to 450,000 platelets/mm. This value is not concerning and does not need to be reported to the provider.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A reason : Hepatomegaly, or the enlargement of the liver, is a common finding in right-sided heart failure. This condition occurs because the heart does not pump blood effectively, leading to congestion and increased pressure in the venous system, including the hepatic veins. As a result, the liver becomes engorged with blood, causing it to enlarge. The normal liver span in adults is about 10-12 cm in the midclavicular line, and any measurement above this can indicate hepatomegaly.
Choice B reason : Orthopnea, which is shortness of breath while lying flat, is more commonly associated with left-sided heart failure. In right-sided heart failure, symptoms are more related to systemic congestion, such as swelling in the legs and abdomen, rather than pulmonary symptoms like orthopnea.
Choice C reason : Dyspnea, or difficulty breathing, can be a symptom of both left and right-sided heart failure. However, in the context of right-sided heart failure, dyspnea is usually due to the accumulation of fluid in the abdominal cavity (ascites) and the increased pressure in the abdominal veins, which can compress the diaphragm and make breathing difficult.
Choice D reason : Frothy sputum is typically not a symptom of right-sided heart failure. It is more indicative of pulmonary edema, which is associated with left-sided heart failure. In right-sided heart failure, the primary issues are related to the systemic circulation and venous congestion.
Correct Answer is D
Explanation
Choice A reason : Applying ice to the extremity is not a standard intervention for DVT. Ice is typically used to reduce inflammation and pain, but in the case of DVT, the priority is to prevent the clot from growing and embolizing. The use of warmth, not cold, may be recommended to help reduce discomfort and swelling.
Choice B reason : Administering vasodilating medications is not a typical intervention for DVT. Vasodilators are used to widen blood vessels and improve blood flow, but they do not address the risk of clot formation or embolization associated with DVT. The mainstay of medical treatment for DVT is anticoagulant therapy, which helps to prevent further clotting.
Choice C reason : Restricting oral fluids is not an intervention for DVT. Adequate hydration is important in the management of DVT as it can help to prevent blood from thickening and reduce the risk of further clot formation. There is no indication to restrict fluids unless there is another underlying condition that requires it.
Choice D reason : Monitoring platelet levels is an important intervention in the care of a client with DVT, especially if they are receiving anticoagulant therapy. Anticoagulants can affect platelet function and count, and monitoring is necessary to ensure safe levels and prevent complications such as bleeding or thrombocytopenia.
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