Topic Breakdown of DOH Dialysis Therapist Exam

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DOH Dialysis Therapist Sample Test

1 of 5

In the classification system of Chronic Kidney Disease (CKD), there are
five stages. In what stage would a GFR between 30 and 59 ml/min/1.73m²
regardless of the presence of kidney damage be?

Correct Answer:

stage 3

the correct answer is stage 3.

to understand why, let's review the classification system for chronic kidney disease (ckd), which is based primarily on the estimated glomerular filtration rate (egfr). the egfr is a measure of how well the kidneys are cleaning the blood and is calculated from a blood test for creatinine. it’s expressed in milliliters per minute adjusted for body surface area (ml/min/1.73m^2).

stage 1 of ckd is characterized by a normal egfr, which is typically 90 ml/min/1.73m^2 or higher, and usually involves other signs of kidney damage such as structural abnormalities or the presence of blood or protein in the urine.

stage 2 is noted as a mild decrease in kidney function, with an egfr ranging from 60 to 89 ml/min/1.73m^2, along with evidence of kidney damage.

stage 3, which is the focus of the question, is indicated by a moderate decrease in kidney function. this stage is further subdivided into two: - stage 3a: egfr between 45 and 59 ml/min/1.73m^2 - stage 3b: egfr between 30 and 44 ml/min/1.73m^2 so, a gfr of 30 to 59 ml/min/1.73m^2 places a person within stage 3 ckd, regardless of whether there is other evidence of kidney damage.

stage 4 represents severe kidney damage and is characterized by an egfr between 15 and 29 ml/min/1.73m^2.

finally, stage 5 is known as kidney failure or end-stage renal disease (esrd), with an egfr of less than 15 ml/min/1.73m^2. at this stage, dialysis or a kidney transplant is usually necessary to sustain life.

in conclusion, a person with a gfr between 30 and 59 ml/min/1.73m^2 would be classified under stage 3 ckd. this stage indicates a moderate decrease in kidney function and can occur with or without other signs of kidney damage.