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NNCC Certified Nephrology Nurse-Nurse Practitioner (CNN-NP) Practice Tests & Test Prep by Exam Edge

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NNCC Certified Nephrology Nurse-Nurse Practitioner Sample Test

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All but which of the following might be considered causes for AKI (acute kidney injury)?

Correct Answer:

hypocalcemia
acute kidney injury (aki), also known as acute renal failure, is a sudden episode of kidney failure or kidney damage that happens within a few hours or a few days. aki causes a build-up of waste products in your blood and makes it hard for your kidneys to keep the right balance of fluid in your body. aki can also affect other organs such as the brain, heart, and lungs. acute kidney injury is common in patients who are in the hospital, in intensive care units, and especially in older adults.

the causes of aki can be broadly categorized into three groups: pre-renal (factors that reduce blood flow to the kidneys), intrinsic (direct damage to the kidneys themselves), and post-renal (obstruction of urine flow from the kidneys).

severe allergic reactions, also known as anaphylaxis, can lead to aki by causing severe hypotension (low blood pressure) and shock, which in turn can drastically reduce the blood flow to the kidneys. this falls into the pre-renal category of aki causes.

shock, whether it's from sepsis, blood loss, or other causes, can severely diminish blood flow to the kidneys. this reduced perfusion can lead to pre-renal aki if not quickly corrected.

liver failure, while primarily affecting the liver, can also lead to aki through multiple mechanisms. these include low blood pressure, alterations in fluid balance, and the effects of toxins that are normally cleared by the liver but accumulate in liver failure, affecting kidney function.

on the other hand, hypocalcemia, which is an electrolyte imbalance in the body where there is a lower level of calcium in the blood, is not typically a direct cause of aki. while severe electrolyte imbalances can impact overall health and can be associated with conditions that might contribute indirectly to kidney stress, hypocalcemia itself does not typically cause aki. instead, hypocalcemia may be a consequence or associated condition of aki due to the kidneys' role in electrolyte balance.

in conclusion, while severe allergic reactions, shock, and liver failure are conditions that can lead to aki, hypocalcemia does not generally cause aki directly. understanding these distinctions is crucial for the prevention and management of acute kidney injury, particularly in clinical settings where rapid diagnosis and treatment are necessary.