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 C
Explanation
Choice A reason: Redness and edema noted at the incision site are signs of inflammation, which are normal in the early stages of wound healing. The nurse should monitor the site for signs of infection, such as purulent drainage, increased pain, or fever.
Choice B reason: Apical heart rate of 100 to 110 beats/minute is a sign of tachycardia, which may be caused by pain, anxiety, dehydration, or blood loss. The nurse should assess the client's vital signs, fluid status, and hemoglobin level, and administer pain medication as prescribed.
Choice C reason: High-pitched sound heard upon inspiration is a sign of stridor, which is a life-threatening emergency that indicates airway obstruction. The nurse should call for help, administer oxygen, and prepare for intubation or tracheostomy.
Choice D reason: Pain rating of 8 on a scale of 0 to 10 is a sign of severe pain, which may impair the client's recovery and increase the risk of complications. The nurse should administer pain medication as prescribed and use non-pharmacological methods to relieve pain, such as positioning, distraction, or relaxation techniques.
Correct Answer is []
Explanation
For Potential Conditions:
The correct answer is c) Abdominal compartment syndrome.
Choice A reason: Pneumothorax is a condition where air leaks into the pleural space, causing lung collapse and impaired gas exchange. It can cause respiratory distress, hypoxia, chest pain, and decreased breath sounds on the affected side. However, it does not cause abdominal distension, acidosis, or hyperglycemia.
Choice B reason: Pulmonary embolism is a condition where a blood clot blocks one or more pulmonary arteries, causing impaired gas exchange and reduced blood flow to the lungs. It can cause respiratory distress, hypoxia, chest pain, and tachycardia. However, it does not cause abdominal distension, acidosis, or hyperglycemia.
Choice C reason: Abdominal compartment syndrome is a condition where increased intra-abdominal pressure causes reduced blood flow to the abdominal organs and impaired diaphragm movement. It can cause respiratory distress, hypoxia, abdominal distension, acidosis, decreased urine output, and organ failure. It is a common complication of cirrhosis with ascites.
Choice D reason: Sepsis is a condition where a systemic inflammatory response to an infection causes organ dysfunction and hypoperfusion. It can cause respiratory distress, hypoxia, fever or hypothermia, tachycardia, acidosis, and hyperglycemia. However, it does not cause abdominal distension unless there is an intra-abdominal infection.
The two actions the nurse should take to address abdominal compartment syndrome are:
- Prepare the client for a paracentesis: Paracentesis is a procedure where a needle or catheter is inserted into the peritoneal cavity to drain excess fluid and reduce intra-abdominal pressure.
- Place an intravenous line to start fluid boluses: Fluid boluses are given to maintain adequate blood pressure and perfusion to the vital organs.
The two parameters the nurse should monitor to assess the client’s progress are:
- Oxygen saturation: Oxygen saturation reflects the amount of oxygen bound to hemoglobin in the blood. It should be maintained above 90% to ensure adequate oxygen delivery to the tissues.
- Urine output: Urine output reflects the function of the kidneys and the perfusion of the renal arteries. It should be maintained above 0.5 mL/kg/hour to prevent acute kidney injury and electrolyte imbalances.
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