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 D
Explanation
A. Ethnicity alone is not a known risk factor for ALS. ALS has a relatively uniform incidence across different ethnic groups. Studies have not demonstrated a significant correlation between ALS and being of Asian descent specifically.
B. There is limited evidence suggesting that consuming well water could be associated with an increased risk of ALS, particularly if the well water is contaminated with certain toxins or heavy metals. However, this is not a widely established risk factor and is less directly linked to ALS compared to other known risk factors.
C. Working in agriculture has been identified as a potential risk factor for ALS. Agricultural workers are often exposed to various environmental toxins, pesticides, and herbicides, which have been associated with an increased risk of developing ALS. This occupational exposure is considered a significant risk factor for the disease.
D. Military veterans are known to have an increased risk of developing ALS. Several studies have shown that veterans, particularly those who served in combat or were exposed to specific environmental hazards during their service, have a higher incidence of ALS compared to the general population.
Correct Answer is A
Explanation
A. Pursed-lip breathing is an effective technique for managing COPD symptoms, particularly tachypnea and dyspnea. It helps to keep the airways open by creating back pressure that prevents the collapse of bronchioles and reduces air-trapping. This technique improves ventilation and helps with the expiration of trapped air, making it a valuable intervention for COPD patients.
B. The Trendelenburg position involves lying flat on the back with the legs elevated higher than the head. This position is not suitable for managing COPD symptoms and can actually worsen breathing difficulties by increasing abdominal pressure on the diaphragm.
C. High-frequency chest wall oscillation (HFCWO) vests are used to help with airway clearance in conditions like cystic fibrosis or chronic bronchitis by loosening mucus. While beneficial for mucus management, they do not specifically address bronchiolar collapse or air-trapping associated with COPD.
D. Measuring the FEV1/FVC ratio is a diagnostic tool used to assess the severity of airflow obstruction in COPD. While this information is important for diagnosis and treatment planning, it is not an immediate intervention to manage symptoms such as tachypnea and dyspnea.
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