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).

Answer and Explanation

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.

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Correct Answer is D

Explanation

Choice A reason: This is incorrect because consuming a high protein diet is not a recommended strategy to reduce risk factors for BPH. In fact, some studies have suggested that a high protein intake may increase the risk of BPH by stimulating the production of insulin-like growth factor-1 (IGF-1), which may promote prostate growth.

Choice B reason: This is incorrect because obtaining a prostate-specific antigen blood level test is not a preventive measure for BPH, but rather a diagnostic tool to detect prostate cancer or monitor its treatment. Prostate-specific antigen (PSA) is a protein produced by the prostate gland that can be elevated in both BPH and prostate cancer. However, PSA levels alone cannot distinguish between these two conditions and need to be interpreted along with other factors, such as age, race, family history, and digital rectal examination.

Choice C reason: This is incorrect because taking vitamin supplements is not a proven method to reduce risk factors for BPH. While some vitamins, such as vitamin D and vitamin E, may have some beneficial effects on prostate health, there is not enough evidence to support their use as preventive agents for BPH. Moreover, some vitamins, such as vitamin A and vitamin B6, may have adverse effects on prostate health and increase the risk of BPH or prostate cancer.

Choice D reason: This is correct because increasing physical activity is a helpful way to reduce risk factors for BPH. Physical activity can help maintain a healthy weight, lower blood pressure, improve blood circulation, reduce inflammation, and regulate hormone levels. All of these factors can contribute to preventing or delaying the development of BPH.

A. The humoral immune response lacks B cells that form antibodies and opportunistic infections result. B. Inadequate numbers of T lymphocytes are available to initiate cellular immunity and macrophages. C. Bone marrow suppression of white blood cells causes insufficient cells to phagocytize organisms. D. Exposure to multiple environmental infectious agents overburdens the immune system until it fails.

Correct Answer is B

Explanation

Choice A reason: This is incorrect because the humoral immune response involves B cells that produce antibodies against specific antigens. However, AIDS affects the cellular immune response, which involves T cells that activate other immune cells and directly kill infected cells.

Choice B reason: This is correct because AIDS is caused by human immunodeficiency virus (HIV), which infects and destroys CD4+ T cells, also known as helper T cells. These cells are essential for initiating and regulating both humoral and cellular immunity. Without enough CD4+ T cells, the body cannot mount an effective response against pathogens, especially opportunistic infections that take advantage of a weakened immune system.

Choice C reason: This is incorrect because bone marrow suppression of white blood cells is not a direct consequence of AIDS. However, some drugs used to treat AIDS, such as zidovudine, may cause bone marrow suppression as a side effect.

Choice D reason: This is incorrect because exposure to multiple environmental infectious agents does not cause AIDS. However, people with AIDS are more susceptible to infections from various sources due to their impaired immune system.

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Naxlex Comprehensive Predictor Exams

A client asks the nurse for information about how to reduce risk factors for benign prostatic hyperplasia (BPH). Which information should the nurse provide?

Correct Answer is D

Explanation

Correct Answer is B

Explanation

A client who had a biliopancreatic diversion procedure (BPD) 3 months ago is admitted with severe dehydration. Which assessment finding warrants immediate intervention by the nurse?

Patient Data Exhibits Drag from the choices area to specify which condition the client is most likely experiencing, two actions the nurse should take to address that condition, and two parameters the nurse should monitor to assess the client’s progress.

The nurse is caring for a client who had an appendectomy 4 hours ago. Which finding requires immediate action by the nurse?

A client with acute renal injury (AKI) weighs 110.3 pounds (50 kg) and has a potassium level of 6.7 mEq/L (6.7 mmol/L) is admitted to the hospital. Which prescribed medication should the nurse administer first? Reference Range: Potassium [3.5 to 5 mEq/L (3.5 to 5 mmol/L)]

After teaching a client newly diagnosed with cholecystitis about recommended diet changes, the nurse evaluates the client's learning. Which food choices eliminated by the client indicate to the nurse that teaching has been successful?

A client with obstructive sleep apnea (OSA) calls the clinic to report difficulty wearing the continuous positive air pressure (CPAP) mask because it is uncomfortable. The client asks the nurse for an alternative way to manage sleep apnea. Which recommendation should the nurse provide?

A client with benign prostatic hyperplasia (BPH) is preparing for discharge following a transurethral needle ablation (TUNA), which information should the nurse include in the discharge instructions?

A client has an absolute neutrophil count (ANC) of 500/mm³ (0.5 x 10⁹/L) after completing chemotherapy. Which intervention is most important for the nurse to implement? Reference Range: Neutrophils (ANC) [2500 to 5800/mm³ (2.5 to 5.8 x 10⁹/L)]