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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["A","C","D"]
Explanation
Choice A reason : Dyspnea, or difficulty breathing, is a common symptom of left-sided heart failure. It occurs because the heart is unable to pump efficiently, leading to a backup of fluid in the lungs, which can cause shortness of breath.
Choice B reason : Jugular vein distention is typically associated with right-sided heart failure, not left-sided. It occurs when there is an increased pressure in the right atrium, leading to visible bulging of the neck veins.
Choice C reason : Orthopnea, or difficulty breathing while lying flat, is another symptom of left-sided heart failure. Fluid accumulation in the lungs makes it difficult for the patient to breathe without elevation, hence they may need to sleep with extra pillows.
Choice D reason : Crackles, which are heard during lung auscultation, are indicative of fluid accumulation in the alveoli due to the inefficiency of the left side of the heart to pump blood, leading to pulmonary congestion.
Choice E reason : Tachycardia, or rapid heartbeat, can be a response to left-sided heart failure as the body attempts to compensate for the decreased cardiac output by increasing the heart rate to maintain adequate blood flow.
Choice F reason : Gastrointestinal bloating is more commonly associated with right-sided heart failure due to systemic venous congestion leading to fluid accumulation in the abdominal organs and tissues.
Correct Answer is D
Explanation
Choice A reason : The triglyceride level of 130 mg/dL is within the normal range, which is less than 150 mg/dL for adults. Therefore, this result does not place the client at risk for peripheral arterial disease.
Choice B reason : An HDL level of 84 mg/dL is considered good as it is higher than the minimum recommended level of 40 mg/dL for males and 50 mg/dL for females. Higher levels of HDL are protective against heart disease.
Choice C reason : A blood glucose level of 92 mg/dL is within the normal fasting range of 70 to 99 mg/dL. This indicates that the client does not have diabetes, which is a risk factor for peripheral arterial disease.
Choice D reason : An LDL level of 172 mg/dL is considered high since the optimal level for LDL is less than 100 mg/dL. High levels of LDL cholesterol can lead to atherosclerosis, increasing the risk for peripheral arterial disease.
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