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Recommended: Pathophysiology of acute renal failure

Renal System

ADOLFO VINICIO GIRON

Med 2049 Fluid and Electrolytes balance and Renal System, FTZ
Instructor MICHELLE EARIXSON- LAMOTHE
NOVEMBER 28, 2013
Explain the pathophysiology of acute renal failure. Include prerenal, intrarenal, and postrenal causes:
Acute renal failure (ARF), is a sudden loss of the ability of the kidneys. You lose your ability to excrete wastes, kidneys cannot concentrate urine, cannot regulate acid-base of blood fluids, lose the ability to regulate RBC due to lack of oxygen, loose ability to conserve electrolytes, and cannot maintain fluid balance. There are three causes to acute renal failure; Prerenal, Intrarenal, and Postrenal. First, prerenal affects the flow of blood before it reaches the kidneys for example: it causes dehydration which leads to vomiting, diarrhea, and blood loss. It gives you a drastic drop in blood pressure from infection in the bloodstream which causes blood vessels to not relax, blockage/narrowing of a blood vessel carrying blood to the kidneys, and liver failure causes affect blood flow and pressure to the kidney if there is a change in hormones. Second, intrarenal also known as Intrinsic causes inflammatory, impaired function to the kidney. Last is the postrenal which causes obstruction in the urinary flow. Common causes are tumors, benign prostatic hypertrophy, kidney stones, cancer of the prostate and neurogenic bladder. If you have any of these problems, you cannot excrete urine out normally.
What diagnostic exams would be used to diagnose acute renal failure? How do these tests change as renal failure progresses through its 3 stages? Discuss, compare, and contrast the 3 stages.
There are several diagnostic exams that would be run to see if you have renal failure and these exams may include serum creatinine which increase in the amount of creatinine in the blood is usually the first sign

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