A nurse is assessing a client who has chronic kidney disease and notes that the client has small crystals on his forehead. The nurse understands that this manifestation is a result of an excess of which substance in the body?

Potassium

Sodium

Urea

Creatinine

Answer and Explanation

The Correct Answer is C

A.   Elevated potassium levels (hyperkalemia) can occur in chronic kidney disease, as the kidneys struggle to excrete potassium. However, hyperkalemia does not typically cause visible crystals on the skin. It is more associated with cardiac arrhythmias and muscle weakness rather than skin manifestations.
B.   Sodium imbalance is common in chronic kidney disease, often leading to fluid retention and hypertension. However, excess sodium does not result in crystal formation on the skin. Sodium issues are more related to fluid balance and blood pressure, not external crystalline deposits.
C.   Urea is a waste product formed from the breakdown of proteins and is normally excreted by the kidneys. In chronic kidney disease, urea accumulates in the blood (uremia) because the kidneys cannot effectively filter it out. Urea can be deposited on the skin and form crystals, leading to a condition known as "uremic frost." This is often observed on the forehead or other areas of the skin and is a direct result of excess urea in the body.

D.   Creatinine is another waste product filtered by the kidneys. Elevated levels indicate impaired kidney function, but creatinine itself does not form visible crystals on the skin. Elevated creatinine levels are primarily used as an indicator of kidney function rather than a cause of external skin manifestations.

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Correct Answer is C

Explanation

A. Edrophonium is used to diagnose myasthenia gravis, a neuromuscular disorder that causes muscle weakness. It is not used to treat the symptoms described in the question.
B. Prednisone is a corticosteroid used to treat various conditions, including autoimmune diseases and allergies. It is not used to treat Parkinson's disease, which is the most likely diagnosis based on the symptoms described.
C. This medication is the gold standard for treating Parkinson's disease, a neurodegenerative disorder that causes tremors, rigidity, bradykinesia (slowed movements), and postural instability. Carbidopa- levodopa helps to increase dopamine levels in the brain, which can improve motor function and reduce symptoms.
D. Riluzole is used to treat amyotrophic lateral sclerosis (ALS), a neurodegenerative disease that affects motor neurons. It is not used to treat Parkinson's disease.

A. Bradycardia B. Hypotension C. Hyperthermia D. Constipation

Correct Answer is C

Explanation

A. Bradycardia, or a slow heart rate, is not typically associated with thyrotoxic crisis. In fact, thyrotoxic crisis usually causes tachycardia (rapid heart rate) due to the body's heightened metabolism and sympathetic nervous system stimulation.
B. Hypotension, or low blood pressure, is not characteristic of a thyrotoxic crisis. The condition typically causes hypertension (elevated blood pressure) as part of the body's stress response and increased metabolic rate.
C. Hyperthermia, or elevated body temperature, is a key sign of thyrotoxic crisis. The condition leads to a hypermetabolic state that can significantly increase body temperature. This high fever is a result of the body's excessive heat production due to the overstimulation of metabolic processes.
D. Constipation is not typically associated with thyrotoxic crisis. In hyperthyroidism, and consequently in thyrotoxic crisis, patients usually experience diarrhea or increased bowel movements due to the increased metabolic rate and gastrointestinal motility.

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A nurse is assessing a client who has chronic kidney disease and notes that the client has small crystals on his forehead. The nurse understands that this manifestation is a result of an excess of which substance in the body?

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Naxlex Comprehensive Predictor Exams

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Correct Answer is C

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