Acute Renal Failures

1403 WordsJan 29, 20186 Pages
Acute Renal Failure The kidneys are vitals organs that are responsible for various function in the human body such as reabsorption, secretion and excretion. They are the filters that enable us to get waste materials that are produced by metabolism or ingested. The most important element that they filter is blood plasma. The kidneys simultaneously eliminate unwanted substances by excreting them into the urine and return substances that are needed back in to the blood. While filtration is the primary function the kidneys are responsible for regulation of arterial pressure, acid-base balance and excretion of hormones. Any injury to the kidney may result in an interruption of these functions. The kidneys are highly vascular organs that receive on average about 1100ml of blood per min. which is 20-25% of total cardiac output. This large volume is necessary to provide enough plasma for the high glomerular filtration rate needed to effectively regulate fluid volumes and solute concentrations. Therefore when the blood supply to the kidneys is compromised the kidneys start to show signs of failure. The causes of renal failure can divided into three categories prerenal, intrarenal, and postrenal. Prerenal cute renal failure is a result of decreased blood flow to the kidneys. It can be a result cardiac failure and of intravascular volume depletion such as hemorrhage and burns. Without adequate blood flow the glomerular filtration rate is reduced as well as the amount of

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