A nurse is discussing laboratory values associated with the renal system with a newly licensed nurse. Which of the following statements by the newly licensed nurse indicates an understanding of the values?
Creatinine levels are increased in clients who have acute kidney injury.
BUN is decreased in clients who have dehydration
Specific gravity is decreased in clients who have hypovolemia.
Potassium levels are increased in clients who have polyuria.
The Correct Answer is A
A. Creatinine levels rise in acute kidney injury due to impaired kidney function, as the kidneys are unable to effectively filter creatinine from the blood.
B. BUN (blood urea nitrogen) levels typically increase in dehydration due to reduced kidney perfusion, leading to decreased urine output and increased concentration of waste products in the blood.
C. Specific gravity increases in hypovolemia because urine becomes more concentrated as the body tries to conserve water.
D. Potassium levels may vary depending on the cause of polyuria, but polyuria itself does not necessarily cause hyperkalemia. It can be caused by various factors including diabetes insipidus or diabetes mellitus.
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Related Questions
Correct Answer is B
Explanation
A. Hypernatremia is usually due to an excess of sodium or a deficit of water, not directly related to prerenal causes.
B. Prerenal AKI is characterized by a decrease in renal blood flow, which leads to a reduction in glomerular filtration rate and a subsequent accumulation of waste products, including potassium. Hyperkalemia occurs because the kidneys are unable to excrete potassium effectively.
C. Hypercalcemia is not typically associated with AKI.
D. Hypophosphatemia is generally associated with malnutrition or malabsorption syndromes and is not a direct result of prerenal AKI.
Correct Answer is B
Explanation
A. Aspirin administration is not typically indicated for hyperthermia associated with hyperthyroidism as it may displace thyroid hormone from binding proteins.
B. A calm environment can help prevent exacerbation of symptoms and reduce the risk of a thyroid crisis in hyperthyroid clients.
C. There is no indication to keep the client NPO solely based on hyperthyroidism.
D. Hypocalcemia is not a primary concern in hyperthyroidism. Monitoring for signs of hyperthyroid crisis is more pertinent.
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