The nurse is preparing an older client for a magnetic resonance imaging (MRI) with contrast. Which laboratory value should the nurse report to the healthcare provider before the scan is performed?
Reference Range:
Glycosylated hemoglobin (A1C) [4% to 5.9%]
Creatinine [0.5 to 1.1 mg/dL (44 to 97 umol/L)]
Glucose [74 to 106 mg/dL (4.1 to 5.9 mmol/L)]
Blood Urea Nitrogen (BUN) [10 to 20 mg/dL (3.6 to 7.1 mmol/L)]
Fasting blood sugar of 200 mg/dL (11.1 mmol/L).
Glycosylated hemoglobin A1c of 8%.
Blood urea nitrogen of 22 mg/dL (7.9 mmol/L).
Serum creatinine of 1.9 mg/dL (169 umol/L).
The Correct Answer is D
Choice A reason: Fasting blood sugar of 200 mg/dL (11.1 mmol/L) indicates hyperglycemia, which is a high level of glucose in the blood. It can be caused by diabetes mellitus, stress, infection, or medication. Hyperglycemia can cause symptoms such as thirst, hunger, frequent urination, fatigue, and blurred vision. However, it does not affect the safety or accuracy of MRI with contrast.
Choice B reason: Glycosylated hemoglobin A1c of 8% indicates poor glycemic control over the past three months. It can be caused by diabetes mellitus, chronic kidney disease, or hemoglobinopathy. Glycosylated hemoglobin A1c reflects the average blood glucose level over the lifespan of red blood cells, which is about 120 days. However, it does not affect the safety or accuracy of MRI with contrast.
Choice C reason: Blood urea nitrogen of 22 mg/dL (7.9 mmol/L) indicates mild azotemia, which is a high level of nitrogenous waste products in the blood. It can be caused by dehydration, high protein intake, gastrointestinal bleeding, or kidney impairment. Azotemia can cause symptoms such as nausea, vomiting, confusion, and lethargy. However, it does not affect the safety or accuracy of MRI with contrast.
Choice D reason: Serum creatinine of 1.9 mg/dL (169 umol/L) indicates moderate renal insufficiency, which is a reduced ability of the kidneys to filter and excrete waste products and fluids from the body. It can be caused by diabetes mellitus, hypertension, glomerulonephritis, or nephrotoxic drugs. Renal insufficiency can cause symptoms such as edema, anemia, electrolyte imbalance, and acidosis. It can also increase the risk of contrast-induced nephropathy, which is a sudden deterioration of kidney function after exposure to contrast media used for imaging studies such as MRI. Contrast-induced nephropathy can lead to acute kidney injury, dialysis requirement, or even death. Therefore, serum creatinine should be reported to the healthcare provider before MRI with contrast to assess the risk and benefit of the procedure and to take preventive measures such as hydration, medication adjustment, or alternative imaging modalities.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A reason: Pupillary changes to ipsilateral dilation indicate increased intracranial pressure, which is a life-threatening complication of stroke. The nurse should notify the physician and prepare for emergency measures.
Choice B reason: Left-sided facial drooping and dysphagia are common signs of right hemisphere stroke, but they do not require immediate intervention by the nurse. The nurse should monitor the patient's swallowing ability and provide oral care.
Choice C reason: Orientation to person and place only is a sign of impaired cognition, which is also common in right hemisphere stroke. The nurse should assess the patient's memory, judgment, and attention span.
Choice D reason: Unequal bilateral hand grip strengths are a sign of hemiparesis, which is a weakness on one side of the body. The nurse should assist the patient with mobility and prevent contractures.
Correct Answer is B
Explanation
Choice A reason: Using incentive spirometer is not an information that the nurse should include in the discharge instructions for a client with BPH following a TUNA, because it is not related to the procedure or the condition. The incentive spirometer is a device that helps improve lung function and prevent respiratory complications by encouraging deep breathing and coughing. Therefore, this choice is incorrect.
Choice B reason: Monitoring urinary stream for decrease in output is an information that the nurse should include in the discharge instructions for a client with BPH following a TUNA, because it can indicate urinary retention or obstruction, which are potential complications of the procedure. The client should report any difficulty or inability to urinate, severe pain, or fever to the health care provider. Therefore, this choice is correct.
Choice C reason: Reporting when hematuria becomes pink tinged is not an information that the nurse should include in the discharge instructions for a client with BPH following a TUNA, because it is not a sign of a problem. Hematuria, or blood in the urine, is a common and expected finding after the procedure, and it usually resolves within a few days. The client should drink plenty of fluids to flush out the blood clots and debris. Therefore, this choice is incorrect.
Choice D reason: Restricting physical activities is an information that the nurse should include in the discharge instructions for a client with BPH following a TUNA, but it is not the best answer. The client should avoid strenuous activities, such as lifting heavy objects, driving, or sexual intercourse, for at least two weeks after the procedure to prevent bleeding and infection. However, this information is less important than monitoring urinary stream for decrease in output. Therefore, this choice is not the best answer.
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