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)]

Choice A reason: Place the client in a room near the elevator: This does **not** promote client safety, because it exposes the client to more noise and disturbance, which can increase stress and blood pressure. A quiet and calm environment is preferable for stroke clients.

Choice B reason: Complete a swallow study before giving anything by mouth: This **promotes** client safety, because it assesses the client's ability to swallow and prevent aspiration. Stroke clients may have impaired swallowing due to facial weakness or sensory loss.

Choice C reason: Provide a call button kept within reach: This **promotes** client safety, because it allows the client to communicate their needs and request assistance when needed. Stroke clients may have limited mobility or vision, which can increase their risk of falls or injuries.

Choice D reason: Initiate use of the bed alarm: This **promotes** client safety, because it alerts the staff if the client tries to get out of bed without assistance. Stroke clients may have impaired judgment or balance, which can lead to falls or accidents.

Choice E reason: Place client belongings out of reach: This does **not** promote client safety, because it makes the client feel frustrated and helpless. Stroke clients may have difficulty reaching for their belongings due to hemiparesis or hemiplegia, which can affect their self-care and independence. The nurse should place the client's belongings within reach on their unaffected side and encourage them to use them as much as possible.

Choice F reason: Instruct the client to call before getting up: This **promotes** client safety, because it ensures that the client has adequate support and supervision when getting up. Stroke clients may have orthostatic hypotension, which can cause dizziness or fainting when changing positions. The nurse should assist the client to get up slowly and monitor their vital signs.

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.