A nurse is reviewing the laboratory results of a client who has been taking warfarin for 3 months. Which of the following laboratory results Indicates that the medication has been effective?
Hgb 14 g/dL
WBC count 10,000/mm3
INR 2.0
Platelets 150,000/mm3
The Correct Answer is C
A. Hemoglobin level: The hemoglobin level measures the amount of hemoglobin, the oxygen-carrying protein in red blood cells, in the blood. Warfarin is not directly responsible for increasing or decreasing the hemoglobin level. While warfarin can lead to bleeding complications in some cases, it does not specifically target the hemoglobin level, so it is not a direct indicator of the medication's effectiveness.
B. Platelet count: The platelet count measures the number of platelets in the blood, which are essential for blood clotting. Warfarin does not directly affect platelet production or count. It works by inhibiting the production of certain clotting factors, not by affecting platelets. Monitoring the platelet count is important, but it is not an indicator of warfarin's effectiveness in preventing excessive clotting.
C. Prothrombin time (PT) or activated partial thromboplastin time (aPTT): Prothrombin time (PT) and activated partial thromboplastin time (aPTT) are coagulation tests used to assess different types of anticoagulant medications, such as heparin. Warfarin's effect is measured using the International Normalized Ratio (INR). PT and aPTT are not specific to warfarin therapy and are not used to monitor its effectiveness. The INR is the appropriate laboratory test for assessing the efficacy of warfarin therapy.
D. International Normalized Ratio (INR): This is the correct answer. The International Normalized Ratio (INR) is the laboratory test used to monitor the effectiveness of warfarin therapy. The INR measures the time it takes for the blood to clot and reflects the anticoagulant effect of warfarin. A therapeutic INR within the target range (e.g., INR = 2.0 to 3.0 for most indications) indicates that warfarin has been effective in preventing excessive clotting and reducing the risk of complications associated with blood clots.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Flumazenil is the antidote for diazepam, which is a benzodiazepine. Flumazenil is a selective antagonist that can reverse the sedative effects of benzodiazepines and is commonly used in cases of benzodiazepine overdose or to reverse sedation after procedures.
Naloxone (A) is the antidote for opioid overdose and would not be appropriate for reversing the effects of diazepam.
Atropine (B) is an anticholinergic medication used to increase heart rate and is not specific to the reversal of diazepam sedation.
Neostigmine (D) is a cholinesterase inhibitor used to reverse the effects of non-depolarizing neuromuscular blocking agents and is not indicated for reversing the effects of diazepam.
Correct Answer is C
Explanation
The nurse should include in the teaching that hydrochlorothiazide therapy can elevate blood glucose levels in clients who have diabetes. Hydrochlorothiazide is a diuretic commonly used to treat hypertension (high blood pressure). While it is effective in reducing blood pressure, it can sometimes cause adverse effects on blood glucose levels, particularly in individuals with diabetes mellitus.
Hydrochlorothiazide can cause an increase in blood glucose levels by reducing insulin sensitivity, leading to potential hyperglycemia (high blood sugar) in some individuals. Clients with diabetes should closely monitor their blood glucose levels while taking hydrochlorothiazide and inform their healthcare provider if they notice significant changes.
Let's go through the other options:
A. "Blood glucose monitoring is likely to be inaccurate while taking hydrochlorothiazide": This statement is not accurate. Hydrochlorothiazide does not directly affect the accuracy of blood glucose monitoring. However, it is essential for clients with diabetes to be aware of the potential impact of hydrochlorothiazide on their blood glucose levels.
B. "You might need to decrease your insulin dosage while taking hydrochlorothiazide": Hydrochlorothiazide can potentially elevate blood glucose levels, which may require adjustments in diabetes management, including insulin dosage. However, it is not accurate to state that all clients will need to decrease their insulin dosage while taking hydrochlorothiazide. Each client's response to the medication may vary, and adjustments to diabetes medications should be made under the guidance of their healthcare provider based on individual blood glucose monitoring.
D. "Reducing sodium in your diet can help control your blood glucose while taking hydrochlorothiazide": While reducing sodium in the diet is generally a beneficial recommendation for individuals with hypertension, it is not directly related to controlling blood glucose levels in clients with diabetes. The primary focus for individuals with diabetes taking hydrochlorothiazide should be on monitoring blood glucose levels and working with their healthcare provider to manage any changes related to the medication.
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