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Essay On Renal Failure

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Mr. Armstrong has a history of renal insufficiency and uncontrolled hypertension, along with symptoms of fatigue, pedal edema, and occasional shortness of breath. He does not have a history of trauma or obstruction to his kidneys, but his creatinine and BUN levels are currently at 3.5 mg/dl and 40 mg/dl. Normal creatinine concentration values are 0.7 to 1.2 mg/dl and normal BUN values are 10 to 20 mg/dl; this reveals that Mr. Armstrong’s kidneys are not removing wastes properly (McCance, Huether, Brashers, & Rote, 2014). Mr. Armstrong’s history of renal insufficiency and uncontrolled hypertension is commonly found in patients diagnosed with intrarenal (intrinsic) acute renal failure. Intrarenal acute renal failure can be categorized as …show more content…

Nephrotoxins, acute interstitial nephritis, glomerular damage, and vascular damage also correlate with intrarenal acute renal failure (Singh, Levy, & Pusey, 2013). Postrenal acute renal failure is usually a result of a urinary tract obstruction that affects the kidneys bilaterally, which causes the intraluminal pressure upstream from the site of the obstruction to increase with a progressive decrease in the glomerular filtration rate (McCance, Huether, Brashers, & Rote, 2014). A pattern consisting of several hours of anuria with flank pain followed by polyuria is typically found in individuals with postrenal acute renal failure (McCance, Huether, Brashers, & Rote, 2014).
What health issues has Mr. Armstrong had that can factor into the development of renal failure? Mr. Armstrong being 76-years-old likely plays a factor in his diagnosis, considering that acute renal failure is most common amongst the elderly (Singh, Levy, & Pusey 2013). Mr. Armstrong’s history of uncontrolled hypertension is likely due to primary hypertension, which is sustained increases in blood pressure due to genetics combined with environmental factors that increase vascular tone and blood volume (McCance, Huether, Brashers, & Rote, 2014). “Increased vascular volume is related to a decrease in renal excretion of salt, often referred to as a shift in the pressure-natriuresis

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