A nurse is caring for a client who reports to the clinic for laboratory tests. The client has an acute kidney injury caused by acute tubular necrosis and asks why their glomerular filtration rate (GFR) keeps decreasing. Which of the following pathophysiological changes occurring in the kidney should the nurse explain as the cause of the decrease?
The glomerular filtration rate decreases because there is injury to the renal tubular cells.
The glomerular filtration rate decreases because there is obstruction leading to the filtration system backing up and eventually shutting the kidneys down.
The glomerular filtration rate decreases because in?ammatory cells invade the already damaged kidneys.
The glomerular filtration rate decreases because there is a reduction of blood flow to the kidneys.
The Correct Answer is A
Choice A reason: Acute tubular necrosis (ATN) is a condition where there is damage to the renal tubular cells, which can lead to a decrease in GFR. This is because the tubular cells are responsible for reabsorbing substances from the filtrate back into the blood. When these cells are injured, they cannot function properly, leading to a buildup of waste products and a decrease in GFR.
Choice B reason: While obstruction can lead to a decrease in GFR, it is not the primary cause in the context of acute tubular necrosis. Obstruction typically occurs in postrenal causes of acute kidney injury.
Choice C reason: In?ammatory cells do invade damaged kidneys, but this is more characteristic of conditions such as acute interstitial nephritis rather than ATN. In ATN, the primary issue is the injury to the tubular cells themselves.
Choice D reason: A reduction of blood flow to the kidneys, or prerenal azotemia, can indeed lead to a decrease in GFR. However, in the context of ATN, the primary issue is not the blood flow but the damage to the renal tubules.
Nursing Test Bank
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Related Questions
Correct Answer is ["0.5"]
Explanation
Step 1: The total amount of digoxin required per dose is 125 mcg. We need to convert this to mg because the available tablets are in mg. We know that 1 mg = 1000 mcg, so 125 mcg = 125 ÷ 1000 mg = 0.125 mg.
Step 2: Each tablet contains 0.25 mg of digoxin.
Step 3: To find out how many tablets are needed, we divide the total amount required by the amount in each tablet. So, (0.125 mg ÷ 0.25 mg/tablet).
Step 4: The result is 0.5 tablets.
So, the nurse should administer 0.5 tablets per dose. This is already rounded to the nearest tenth.
Correct Answer is C
Explanation
Choice A reason: Maintaining the client in a left lateral position is not specifically required for peritoneal dialysis. Positioning may vary based on the individual's comfort and specific medical needs.
Choice B reason: While monitoring vital signs is important during any medical procedure, it is not an intervention that directly ensures proper dialysate exchange in peritoneal dialysis.
Choice C reason: Warming the dialysate solution prior to instillation is a standard practice in peritoneal dialysis. It helps to promote patient comfort and more efficient exchange of wastes and fluids.
Choice D reason: Placing the drainage bag above the level of the client's abdomen would impede gravity drainage, which is necessary for proper dialysate exchange. The drainage bag should be placed below the level of the client's abdomen.
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