CCHT PREP EXAM QUESTIONS WITH
CORRECT ANSWERS 2026
Counter current flow allows for the most efficient removal of wastes from the patient. -
CORRECT ANSWER -Blood and dialysate move in opposite directions
A semipermeable membrane is a porous barrier that - CORRECT ANSWER -
Allows only a certain size particle to cross
Diffusion is movement of particles - CORRECT ANSWER -
From an area of higher concentration to an area of lower concentration
Negative pressure is pressure created when - CORRECT ANSWER -Fluid is pulled through a restriction
During dialysis ultra filtration occurs when - CORRECT ANSWER -
Water is removed from the blood because there is a pressure gradient between blood and dialysis
At which point in the extracorporeal circuit is the blood usually under negative pressure -
CORRECT ANSWER -The arterial line section before the blood pump
Which of the following will increase the amount of solutes that will diffuse across the semipermeable
membrane - CORRECT ANSWER -High concentration gradients
Heparin is prescribed for most dialysis treatments because - CORRECT ANSWER -
Heparin minimizes clotting in the circuit
The components of the dialysis treatment that affect the clearance include - CORRECT ANSWER -
Dialysate flow, time of treatment, dialyzer size, and blood flow rate
Which of these functions of healthy kidneys can be replaced by dialysis - CORRECT ANSWER -
1. fluid removal
2. waste removal
, 3. electrolyte balance
How does hemodialysis work? Explain how the blood and dialysate interact with the semipermeable m
embrane. - CORRECT ANSWER -
Blood and dialysate are pumped through the dialyzer, on opposite sides of a semipermeable membrane
. Solutes and excess fluid pass from the blood, through the membrane, and into the dialysate for remov
al
The dialyzer removes most wastes and excess fluids from the body through a number of processes inclu
ding diffusion, convection, and ultrafiltration. Dialyzers vary in their ability to remove wastes from the b
ody. The ability to remove wastes from the body is called. - CORRECT ANSWER -Clearance
Two things that affect the dialyzers ability to remove wastes from the body include -
CORRECT ANSWER -Surface area and molecular weight cutoff
Name two compartments of the dialyzer - CORRECT ANSWER -Blood and dialysate
Dialysate is the fluid that helps remove waste products from the body. It contains a number of substanc
es. Choose the group that might be prescribed for a dialysate solution - CORRECT ANSWER -
Bicarbonate, sodium, potassium
What is the most important safety monitor during a dialysis treatment - CORRECT ANSWER -
The dialysis technician
Dialysate conductivity measures - CORRECT ANSWER -The total electrical charge of a solution
Dialysate that has too much sodium may cause patient injury. Too much sodium or hypernatremia can c
ause - CORRECT ANSWER -Headaches, high blood pressure, cramping, and shriveling of red blood cells
Dialysate that has too much calcium can cause - CORRECT ANSWER -Vomiting, confusion and irritability
Dialysate that has too much potassium can cause - CORRECT ANSWER -
Irregular heartbeat, severe muscle weakness
CORRECT ANSWERS 2026
Counter current flow allows for the most efficient removal of wastes from the patient. -
CORRECT ANSWER -Blood and dialysate move in opposite directions
A semipermeable membrane is a porous barrier that - CORRECT ANSWER -
Allows only a certain size particle to cross
Diffusion is movement of particles - CORRECT ANSWER -
From an area of higher concentration to an area of lower concentration
Negative pressure is pressure created when - CORRECT ANSWER -Fluid is pulled through a restriction
During dialysis ultra filtration occurs when - CORRECT ANSWER -
Water is removed from the blood because there is a pressure gradient between blood and dialysis
At which point in the extracorporeal circuit is the blood usually under negative pressure -
CORRECT ANSWER -The arterial line section before the blood pump
Which of the following will increase the amount of solutes that will diffuse across the semipermeable
membrane - CORRECT ANSWER -High concentration gradients
Heparin is prescribed for most dialysis treatments because - CORRECT ANSWER -
Heparin minimizes clotting in the circuit
The components of the dialysis treatment that affect the clearance include - CORRECT ANSWER -
Dialysate flow, time of treatment, dialyzer size, and blood flow rate
Which of these functions of healthy kidneys can be replaced by dialysis - CORRECT ANSWER -
1. fluid removal
2. waste removal
, 3. electrolyte balance
How does hemodialysis work? Explain how the blood and dialysate interact with the semipermeable m
embrane. - CORRECT ANSWER -
Blood and dialysate are pumped through the dialyzer, on opposite sides of a semipermeable membrane
. Solutes and excess fluid pass from the blood, through the membrane, and into the dialysate for remov
al
The dialyzer removes most wastes and excess fluids from the body through a number of processes inclu
ding diffusion, convection, and ultrafiltration. Dialyzers vary in their ability to remove wastes from the b
ody. The ability to remove wastes from the body is called. - CORRECT ANSWER -Clearance
Two things that affect the dialyzers ability to remove wastes from the body include -
CORRECT ANSWER -Surface area and molecular weight cutoff
Name two compartments of the dialyzer - CORRECT ANSWER -Blood and dialysate
Dialysate is the fluid that helps remove waste products from the body. It contains a number of substanc
es. Choose the group that might be prescribed for a dialysate solution - CORRECT ANSWER -
Bicarbonate, sodium, potassium
What is the most important safety monitor during a dialysis treatment - CORRECT ANSWER -
The dialysis technician
Dialysate conductivity measures - CORRECT ANSWER -The total electrical charge of a solution
Dialysate that has too much sodium may cause patient injury. Too much sodium or hypernatremia can c
ause - CORRECT ANSWER -Headaches, high blood pressure, cramping, and shriveling of red blood cells
Dialysate that has too much calcium can cause - CORRECT ANSWER -Vomiting, confusion and irritability
Dialysate that has too much potassium can cause - CORRECT ANSWER -
Irregular heartbeat, severe muscle weakness
