The Fractional Excretion of Sodium (FENa) determines if renal failure is due to pre-renal, intrinsic, or post-renal pathology.

FE Na can be useful in the evaluation of acute kidney failure in the context of low urine output. Low fractional excretion indicates sodium retention by the kidney, suggesting pathophysiology extrinsic to the urinary system such as volume depletion or decrease in effective circulating volume (e.g. low output heart failure).

2024年10月30日 · The fractional excretion of sodium (FENa) measures the percent of filtered sodium that is excreted in the urine. This calculation is used to help differentiate prerenal disease (decreased kidney perfusion) from acute tubular necrosis (ATN) as the cause of …

FENa, calculated by measuring creatinine and sodium levels in the blood and urine simultaneously [ (urinary sodium × serum creatinine)/ (urinary creatinine × serum sodium)×100), has been described as an uncomplicated method to determine tubular handling of sodium because it can be calculated at any moment without the measurement of urine volume.

钠排泄分数(fractional excretion of sodium, FENa)测量尿中排泄的钠滤过百分比。 FENa的测定结果广泛应用于鉴别急性肾损伤(acute kidney injury, AKI；以前称为急性肾衰竭)的原因是肾前性疾病(肾脏灌注下降)还是急性肾小管坏死(acute tubular necrosis, ATN)。

As stated earlier, FENa refers to the percentage of sodium the kidney filters which eventually gets excreted through the urine. The information derived from FENa is commonly used in differentiating pre-renal disease from ATN or acute tubular …

Offers quick and accurate FENa calculation for kidney assessment. Reduces diagnostic uncertainty in patients with renal dysfunction. Improves diagnostic efficiency for healthcare professionals.

Es la cantidad de sal (sodio) que sale del cuerpo a través de la orina comparada con la cantidad filtrada y reabsorbida por el riñón. La excreción fraccionada de sodio (FENa, por sus siglas en inglés) no es un análisis. Se trata de un cálculo basado en las concentraciones de sodio y creatinina en la sangre y en la orina.

2023年12月31日 · Fractional excretion of sodium is the amount of salt (sodium) that leaves the body through urine compared to the amount filtered and reabsorbed by the kidney. Fractional excretion of sodium (FENa) is not a test. Instead it is a calculation based on the concentrations of sodium and creatinine in the blood and urine.

Junto con el Na urinario, la Excreción Fraccional de Na, es uno de los factores utilizados para evaluar el origen de una insuficiencia renal. Una I.R. de origen prerenal -en general es causada por reducción de la perfusión.