The nurse is caring for a client who is being evaluated for possible deep vein thrombosis of the right extremity. Which laboratory result is of most concern to the nurse?
Activated Partial Thromboplastin Time (aPTT) of 25.
D-dimer of 500 ng/mL.
Prothrombin Time (PT) of 14 seconds.
Platelet count of 148,000 uL.
The Correct Answer is B
Choice A rationale
Activated Partial Thromboplastin Time (aPTT) of 25 is within the normal range (25-35 seconds) and is not directly related to deep vein thrombosis (DVT)89.
Choice B rationale
A D-dimer level of 500 ng/mL is elevated (normal range is typically less than 250 ng/mL), which can indicate the presence of a clot, such as in DVT8910.
Choice C rationale
Prothrombin Time (PT) of 14 seconds is within the normal range (11-13.5 seconds) and is not directly related to DVT89.
Choice D rationale
A platelet count of 148,000 uL is within the normal range (150,000-450,000 uL) and is not directly related to DVT89.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A rationale
While it’s important for clients to understand their medications, not having received proper education on this medication is not a reason to withhold cefazolin.
Choice B rationale
Completing a full course of an aminoglycoside antibiotic does not contraindicate the use of cefazolin.
Choice C rationale
Being afebrile does not contraindicate the use of cefazolin. Antibiotics are used to treat bacterial infections, not just to reduce fever.
Choice D rationale
A prior anaphylactic reaction to penicillin is a contraindication for administering cefazolin. Cefazolin is a cephalosporin, and there is a risk of cross-reactivity and potential allergic reaction in clients who have a history of severe penicillin allergy.
Correct Answer is D
Explanation
Choice A rationale
55-year-old woman with coronary artery disease. While patients with coronary artery disease often have multiple comorbidities and may be on medications that could interact with Penicillin G, there is no specific increased risk of adverse reactions to Penicillin G in this population.
Choice B rationale
21-year-old college senior who is being treated for Streptococcus. Penicillin G is often used to treat Streptococcus infections. There is no specific increased risk of adverse reactions in this population unless the patient has a known allergy to penicillins.
Choice C rationale
23-year-old woman who recently delivered and has mastitis. Penicillin G can be used to treat mastitis, an infection of the breast tissue that results in breast pain, swelling, warmth, and redness. There is no specific increased risk of adverse reactions in this population unless the patient has a known allergy to penicillins.
Choice D rationale
65-year-old man with dehydration. Dehydration can affect kidney function, and Penicillin G is excreted by the kidneys. Therefore, patients with dehydration or any other condition that reduces kidney function are at a higher risk of adverse reactions to Penicillin G3.
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