FREE CCHT Technical and Environment Test 1

Question 1

One-half teaspoon of salt is equal to about how many milligrams of sodium?

Accepted Answer

1,150 mg

Answer

One teaspoon of salt (sodium chloride) is approximately 2300 mg of sodium. Therefore, one-half teaspoon of salt would be half of that amount. This calculation yields 2300 mg / 2 = 1150 mg of sodium, which is important information for dietary education in hemodialysis patients who often need to restrict sodium intake.

Question 2

A dialysis machine is set up to use 36.1X parts dialysate. If the concentrate proportioning ratio calls for 1.00 part acid and 1.10 parts bicarbonate, how many parts of water are needed?

Accepted Answer

34.0

Answer

The total dialysate proportioning ratio is given as 36.1 parts. The concentrate proportioning calls for 1.00 part acid and 1.10 parts bicarbonate. To determine the parts of water needed, subtract the concentrate parts from the total parts: 36.1 (total) - 1.00 (acid) - 1.10 (bicarbonate) = 34.0 parts of water. This calculation ensures the correct dilution for the dialysate mixture.

Question 3

About what percentage of body water is in the intravascular space (inside blood vessels)?

Accepted Answer

10%

Answer

Body water is distributed into several compartments within the body. The intravascular space, which refers to the fluid component of blood (plasma) contained within blood vessels, accounts for approximately 10% of the total body water. The majority of body water is found within cells (intracellular fluid) and in the spaces between cells (interstitial fluid).

Question 4

The mass transfer coefficient of a dialyzer refers to ____________.

Accepted Answer

how well solutes pass through the dialyzer membrane

Answer

The mass transfer coefficient (KoA) of a dialyzer is a critical measure of its efficiency in removing solutes from the blood. It quantifies how readily solutes, or waste products, can cross the semipermeable membrane from the patient's blood into the dialysate fluid. A higher KoA value indicates a more efficient dialyzer for clearing waste products.

Question 5

When using an alcohol-based hand rub, the hand rub should be applied to one palm and the hands rubbed together _____________.

Accepted Answer

until dry

Answer

When using alcohol-based hand rubs, it is crucial to rub the hands together thoroughly until they are completely dry. This ensures that the alcohol has sufficient contact time to effectively kill microorganisms on the skin surface. Allowing the hands to air dry completely also prevents the transfer of wet product to surfaces or patients, maintaining hygiene standards.

CCHT - Certified Clinical Hemodialysis Technician Practice Test

CCHT - Certified Clinical Hemodialysis Technician Practice Test

FREE CCHT Technical and Environment Test 1