In a patient with chronic renal failure, the expected finding would be elevated blood urea nitrogen (BUN) levels due to the reduced ability of the kidneys to filter waste, leading to an accumulation of substances like urea in the blood.
The expected finding in a patient with chronic renal failure is elevated blood urea nitrogen (BUN) levels. Chronic renal failure, otherwise known as chronic kidney disease, is characterized by a gradual loss of kidney function over time. As the kidneys' ability to filter waste from the blood diminishes, substances like urea accumulate, leading to higher BUN levels. This condition is often diagnosed through blood tests that reveal increased creatinine or BUN, especially when accompanied by a reduced urine output.
In cases of chronic renal failure, you would not expect to see increased urine output, decreased blood pressure directly due to kidney function, or improved kidney function as these are not typical features of the condition. Moreover, conditions such as benign prostatic hypertrophy or prostate cancer, kidney stones, and obstructed urinary catheters can complicate and exacerbate the symptoms of chronic renal failure.