The most common cause of prerenal acute kidney injury (AKI) is:
Hyperperfusion
Caused by ischemia
Nephrotoxic drugs
Urinary tract obstruction
The Correct Answer is B
Choice A reason: Hyperperfusion, or excessive renal blood flow, is not a common cause of prerenal AKI. Prerenal AKI results from reduced renal perfusion, like hypovolemia or hypotension, not increased flow, making this an incorrect cause for the condition.
Choice B reason: Ischemia, due to reduced renal perfusion from hypovolemia, hypotension, or shock, is the most common cause of prerenal AKI. It impairs glomerular filtration, leading to acute renal dysfunction, reversible with restored perfusion, making this the correct cause.
Choice C reason: Nephrotoxic drugs cause intrinsic AKI by directly damaging renal tubules, not prerenal AKI, which stems from reduced blood flow. While significant, nephrotoxicity is less common than ischemic causes in prerenal AKI, making this incorrect.
Choice D reason: Urinary tract obstruction causes postrenal AKI by blocking urine outflow, not prerenal AKI, which involves pre-renal hypoperfusion. Obstruction is a distinct mechanism, less frequent than ischemia in prerenal cases, making this an incorrect cause.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A reason: Nerve damage from the prosthetic may cause local discomfort, but pain in the entire absent arm suggests phantom limb pain. This is less likely than neural misfiring, so it’s incorrect.
Choice B reason: Heart attack referred pain typically affects the left arm but is unlikely in a prosthetic limb. Phantom limb pain explains pain in the absent arm, so this is incorrect.
Choice C reason: Muscle strain affects existing muscles, not a prosthetic arm. Phantom limb pain, from neural signals in the brain, explains pain in the missing limb, so this is incorrect.
Choice D reason: Phantom limb pain occurs when the brain perceives pain in an amputated limb, common in prosthetic users. This matches Mr. Jones’s pain in his prosthetic arm, making it correct.
Correct Answer is C
Explanation
Choice A reason: Aspirin inhibits TXA2 synthesis, reducing platelet adhesion and clotting. This is a true mechanism of aspirin’s antiplatelet effect, so it’s incorrect as the exception.
Choice B reason: Aspirin reduces prostaglandin production, which decreases platelet aggregation. This is a valid antiplatelet mechanism, so it’s incorrect for the action aspirin does not perform.
Choice C reason: Aspirin does not inhibit fibrinogen-to-fibrin conversion; this is part of the coagulation cascade, not platelet function. Aspirin targets platelets, making this the correct action it doesn’t perform.
Choice D reason: Aspirin inhibits ADP-induced platelet aggregation, minimizing plug formation. This is a true antiplatelet effect, so it’s incorrect as the action aspirin does not do.
Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.
Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today
Report Wrong Answer on the Current Question
Do you disagree with the answer? If yes, what is your expected answer? Explain.
Kindly be descriptive with the issue you are facing.