A nurse is preparing to administer warfarin to a client who has chronic atrial fibrillation. Which of the following laboratory values should the nurse monitor prior to administering the medication?
LDL
INR
BUN
Hct
The Correct Answer is B
Choice A Reason:
LDL (Low-Density Lipoprotein) is incorrect. This is a type of cholesterol and is not specifically monitored in relation to warfarin therapy.
Choice B Reason:
INR (International Normalized Ratio) is correct. Warfarin is an anticoagulant medication, and its dosage needs to be adjusted based on the INR levels. INR monitoring helps assess the clotting tendency of the blood and ensures that the dosage of warfarin is within the therapeutic range to prevent blood clots without causing excessive bleeding.
Choice C Reason:
BUN (Blood Urea Nitrogen) is incorrect. This value is primarily used to assess kidney function and is not directly related to monitoring warfarin therapy.
Choice D Reason:
Hct (Hematocrit) is incorrect. This measures the percentage of red blood cells in the blood and is not directly related to monitoring warfarin therapy for atrial fibrillation.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A Reason:
Temperature 37.3°C (99.1°F) is incorrect . While a slightly elevated temperature can sometimes accompany an infection, it's not specific to a bladder infection and might not be present in all cases.
Choice B Reason:
Changed mental status is incorrect. Bladder infections or urinary tract infections (UTIs) in older adults can often present with atypical symptoms, and changes in mental status or acute confusion are common indicators in this population. UTIs can cause subtle but significant alterations in mental function, particularly in the elderly, leading to confusion, agitation, or cognitive impairment.
Choice C Reason:
WBC count 9,000/mm3 (5000 to 10,000/mm3) is incorrect .A WBC count within the normal range doesn't necessarily rule out or confirm a bladder infection. In some cases, UTIs might not significantly elevate the white blood cell count, especially in localized infections.
Choice D Reason:
Diminished reflexes is incorrect . Diminished reflexes are not typically associated with a bladder infection. They might indicate other neurological or muscular issues but are not a common sign of a UTI.
Correct Answer is A
Explanation
Choice A Reason:
Passing of flatus is correct. Passing flatus (gas) is an encouraging sign that the digestive system is functioning and that gas is moving through the colostomy. This is a positive indicator of colostomy function.
Choice B Reason:
Stoma is pinkish-red. A pinkish-red stoma indicates good blood circulation to the area, which is vital for the health of the stoma tissue. A healthy-colored stoma is a positive sign.
Choice C Reason:
Tolerating a clear liquid diet. Tolerating a clear liquid diet might be an indicator of gastrointestinal function, but it might not specifically confirm the functionality of the colostomy itself.
D. Absent bowel sounds
Absent bowel sounds might be present immediately postoperatively due to the effects of anesthesia and abdominal surgery. However, bowel sounds aren't a direct indicator of colostomy function.
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