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
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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. AMD affects the macula, which is responsible for central vision and fine detail. As the condition progresses, patients often experience a gradual loss of central vision, which can make it difficult to read, recognize faces, and perform tasks that require sharp vision. Distortion of straight lines (metamorphopsia) is also common, where straight lines may appear wavy or bent.
B. Floaters and flashes of light are more commonly associated with conditions affecting the vitreous body of the eye or retinal detachment, rather than AMD. These symptoms can occur due to changes in the vitreous gel or as a result of other retinal issues, but they are not the primary symptoms of AMD.
C. Cloudy vision and glare are typically associated with cataracts, not AMD. Cataracts cause the lens of the eye to become cloudy, leading to blurred vision and increased sensitivity to glare. AMD does not cause the lens to cloud, so these symptoms are not characteristic of AMD.
D. Loss of peripheral vision is more characteristic of glaucoma rather than AMD. AMD primarily affects central vision, leaving peripheral vision relatively intact until the disease progresses to an advanced stage. Glaucoma, on the other hand, often leads to a gradual loss of peripheral vision.
Correct Answer is ["50"]
Explanation
Flow rate in gtt/min = (Volume in mL * Drop factor) / Time in minutes.
The prescribed volume is 150 mL/hr. Since there are 60 minutes in an hour, the time for one hour would be 60 minutes. The drop factor is 20 gtt/mL.
(150 mL/hr * 20 gtt/mL) / 60 min/hr = 3000 gtt/hr / 60 min/hr = 50 gtt/min.
Therefore, the nurse should set the manual IV infusion to deliver 50 gtt/min.
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