A nurse is assessing a preoperative client. The client has a history of atrial fibrillation and is taking warfarin daily. Which test order will the nurse request from the provider?
A serum sodium (Na)
A radiological examination of the chest
A blood urea nitrogen (BUN)
An international normalized ratio (INR)
The Correct Answer is D
A. Serum sodium levels are typically assessed to evaluate electrolyte balance and hydration status. While important for overall health assessment, it is not specifically related to monitoring the effects of warfarin therapy.
B. This could be ordered for various reasons such as assessing lung status or identifying any abnormalities in the chest. It is not directly related to monitoring warfarin therapy.
C. BUN levels are measured to assess kidney function and hydration status. While important for overall health assessment, it is not specifically related to monitoring the effects of warfarin therapy.
D. The INR is a standardized measurement of the blood's ability to clot. Warfarin works by inhibiting vitamin K-dependent clotting factors, thereby prolonging the time it takes for blood to clot. The INR is used to monitor and adjust warfarin dosage to maintain therapeutic anticoagulation levels, especially in patients with conditions like atrial fibrillation who are at risk of blood clots.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. Respiratory alkalosis is characterized by a high pH (alkaline) and a low PaCO2 (<35 mm Hg). The ABG results provided show a pH of 7.3 (which is acidic) and a PaCO2 of 50 mm Hg (which is elevated). Therefore, these results do not indicate respiratory alkalosis.
B. Metabolic acidosis is characterized by a low pH (<7.35) and a decreased bicarbonate (HCO3-). The ABG results show a pH of 7.3 (acidic), which aligns with metabolic acidosis. However, the PaCO2 of 50 mm Hg is elevated, which typically indicates respiratory compensation for the metabolic acidosis.
C. Metabolic alkalosis is characterized by a high pH and an elevated bicarbonate (HCO3-). The ABG results show a pH of 7.3 (acidic), which does not suggest metabolic alkalosis.
D. Respiratory acidosis is characterized by a low pH and an elevated PaCO2 (>45 mm Hg). The ABG results provided show a pH of 7.3 (acidic) and a PaCO2 of 50 mm Hg (elevated). These findings are consistent with respiratory acidosis, where the elevated PaCO2 indicates retention of carbon dioxide, leading to acidosis.
Correct Answer is D
Explanation
A. Applying a warm compress can help dilate the blood vessels, potentially improving circulation around the IV site. This can sometimes alleviate discomfort caused by irritation or infiltration. However, if there is significant pain or swelling, warm compresses may not be sufficient.
B. Applying firm pressure on the syringe plunger during the flush is not recommended. Excessive force could potentially cause damage to the vein or exacerbate pain and discomfort. It's important to flush gently to maintain patency and avoid causing further irritation or complications.
C. If the client reports pain above the IV saline lock and there are signs of infiltration (such as swelling, coolness, or blanching of the skin around the site), removing the IV saline lock may be necessary. Infiltration occurs when IV fluid leaks into the surrounding tissue instead of flowing into the vein, which can lead to discomfort and complications.
D. Injecting the solution more slowly during the flush can help minimize discomfort and reduce the risk of causing further damage. Slower infusion allows for better tolerance by the vein and surrounding tissues, decreasing the likelihood of pain or infiltration.
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