CCHT Dialysis Technician Certification
Practice Exam Study Guide 2026 |
Updated Questions & Answers with
Verified Rationales | Hemodialysis Exam
Prep
• This practice exam contains 200 carefully crafted questions mirroring the actual
CCHT certification exam format, covering all core hemodialysis domains including
patient care, equipment, water treatment, infection control, complications, and
nutrition.
• Use this guide by attempting each question independently before checking the
highlighted correct answer and EXPERT RATIONALE — repeat missed questions
until you consistently score above 80%.
CCHT DIALYSIS TECHNICIAN CERTIFICATION PRACTICE EXAM Study Guide 2026
| 200 Questions with Verified EXPERT RATIONALE
SECTION 1: HEMODIALYSIS PRINCIPLES & EQUIPMENT
1. What is the primary purpose of hemodialysis?
A. To replace lost blood volume
B. To administer intravenous medications
C. To filter waste products and excess fluid from the blood
D. To oxygenate the blood
E. To regulate hormone production
CORRECT ANSWER: C. To filter waste products and excess fluid from the
blood
,EXPERT RATIONALE: Hemodialysis mimics kidney function by removing uremic toxins
such as urea and creatinine, as well as excess fluid and electrolytes from the blood
through a semipermeable membrane in the dialyzer.
2. Which principle describes the movement of solutes from an area of high
concentration to low concentration across a semipermeable membrane?
A. Osmosis
B. Ultrafiltration
C. Convection
D. Diffusion
E. Adsorption
CORRECT ANSWER: D. Diffusion
EXPERT RATIONALE: Diffusion is the primary solute removal mechanism in
hemodialysis. Waste products move from the blood (high concentration) across the
dialyzer membrane into the dialysate (low concentration).
3. What does ultrafiltration refer to in hemodialysis?
A. Removal of bacteria from dialysate
B. Movement of solutes by diffusion
C. Removal of excess fluid from the patient by hydrostatic pressure
D. Sterilization of the dialyzer
E. Cleaning of the blood lines
CORRECT ANSWER: C. Removal of excess fluid from the patient by
hydrostatic pressure
,EXPERT RATIONALE: Ultrafiltration is the process of removing excess fluid (plasma
water) from the patient's blood using transmembrane pressure (TMP) across the dialyzer
membrane.
4. What is the function of the dialyzer?
A. Pump blood through the circuit
B. Monitor blood pressure
C. Act as an artificial kidney by filtering blood
D. Deliver heparin to the patient
E. Regulate the patient's heart rate
CORRECT ANSWER: C. Act as an artificial kidney by filtering blood
EXPERT RATIONALE: The dialyzer contains thousands of hollow fibers with
semipermeable membranes through which blood flows. Waste products and excess fluid
pass through the membrane into the surrounding dialysate.
5. Which type of vascular access is considered the gold standard for
hemodialysis?
A. Central venous catheter
B. Tunneled dialysis catheter
C. Arteriovenous graft
D. Arteriovenous fistula
E. Peripheral IV line
CORRECT ANSWER: D. Arteriovenous fistula
EXPERT RATIONALE: The AV fistula is created by surgically connecting an artery to a
vein, typically in the forearm. It provides the highest blood flow rates, has the lowest
infection risk, and offers the longest patency compared to other access types.
, 6. What is the typical blood flow rate used in hemodialysis?
A. 50–100 mL/min
B. 200–400 mL/min
C. 500–700 mL/min
D. 800–1000 mL/min
E. 1000–1200 mL/min
CORRECT ANSWER: B. 200–400 mL/min
EXPERT RATIONALE: Standard hemodialysis blood flow rates range from 200 to 400
mL/min. Higher flow rates improve solute clearance (Kt/V) but must be achievable
through the patient's vascular access.
7. What does the term "Kt/V" measure in dialysis?
A. Blood pressure adequacy
B. Dialyzer membrane thickness
C. Adequacy of dialysis based on urea removal
D. Ultrafiltration volume
E. Heparin dosage
CORRECT ANSWER: C. Adequacy of dialysis based on urea removal
EXPERT RATIONALE: Kt/V is a dimensionless index measuring dialysis adequacy. K =
dialyzer clearance of urea, t = treatment time, V = volume of distribution of urea. A
minimum delivered Kt/V of 1.2 per session is recommended.
8. What is the minimum recommended Kt/V for an adequately dialyzed
patient per KDOQI guidelines?
Practice Exam Study Guide 2026 |
Updated Questions & Answers with
Verified Rationales | Hemodialysis Exam
Prep
• This practice exam contains 200 carefully crafted questions mirroring the actual
CCHT certification exam format, covering all core hemodialysis domains including
patient care, equipment, water treatment, infection control, complications, and
nutrition.
• Use this guide by attempting each question independently before checking the
highlighted correct answer and EXPERT RATIONALE — repeat missed questions
until you consistently score above 80%.
CCHT DIALYSIS TECHNICIAN CERTIFICATION PRACTICE EXAM Study Guide 2026
| 200 Questions with Verified EXPERT RATIONALE
SECTION 1: HEMODIALYSIS PRINCIPLES & EQUIPMENT
1. What is the primary purpose of hemodialysis?
A. To replace lost blood volume
B. To administer intravenous medications
C. To filter waste products and excess fluid from the blood
D. To oxygenate the blood
E. To regulate hormone production
CORRECT ANSWER: C. To filter waste products and excess fluid from the
blood
,EXPERT RATIONALE: Hemodialysis mimics kidney function by removing uremic toxins
such as urea and creatinine, as well as excess fluid and electrolytes from the blood
through a semipermeable membrane in the dialyzer.
2. Which principle describes the movement of solutes from an area of high
concentration to low concentration across a semipermeable membrane?
A. Osmosis
B. Ultrafiltration
C. Convection
D. Diffusion
E. Adsorption
CORRECT ANSWER: D. Diffusion
EXPERT RATIONALE: Diffusion is the primary solute removal mechanism in
hemodialysis. Waste products move from the blood (high concentration) across the
dialyzer membrane into the dialysate (low concentration).
3. What does ultrafiltration refer to in hemodialysis?
A. Removal of bacteria from dialysate
B. Movement of solutes by diffusion
C. Removal of excess fluid from the patient by hydrostatic pressure
D. Sterilization of the dialyzer
E. Cleaning of the blood lines
CORRECT ANSWER: C. Removal of excess fluid from the patient by
hydrostatic pressure
,EXPERT RATIONALE: Ultrafiltration is the process of removing excess fluid (plasma
water) from the patient's blood using transmembrane pressure (TMP) across the dialyzer
membrane.
4. What is the function of the dialyzer?
A. Pump blood through the circuit
B. Monitor blood pressure
C. Act as an artificial kidney by filtering blood
D. Deliver heparin to the patient
E. Regulate the patient's heart rate
CORRECT ANSWER: C. Act as an artificial kidney by filtering blood
EXPERT RATIONALE: The dialyzer contains thousands of hollow fibers with
semipermeable membranes through which blood flows. Waste products and excess fluid
pass through the membrane into the surrounding dialysate.
5. Which type of vascular access is considered the gold standard for
hemodialysis?
A. Central venous catheter
B. Tunneled dialysis catheter
C. Arteriovenous graft
D. Arteriovenous fistula
E. Peripheral IV line
CORRECT ANSWER: D. Arteriovenous fistula
EXPERT RATIONALE: The AV fistula is created by surgically connecting an artery to a
vein, typically in the forearm. It provides the highest blood flow rates, has the lowest
infection risk, and offers the longest patency compared to other access types.
, 6. What is the typical blood flow rate used in hemodialysis?
A. 50–100 mL/min
B. 200–400 mL/min
C. 500–700 mL/min
D. 800–1000 mL/min
E. 1000–1200 mL/min
CORRECT ANSWER: B. 200–400 mL/min
EXPERT RATIONALE: Standard hemodialysis blood flow rates range from 200 to 400
mL/min. Higher flow rates improve solute clearance (Kt/V) but must be achievable
through the patient's vascular access.
7. What does the term "Kt/V" measure in dialysis?
A. Blood pressure adequacy
B. Dialyzer membrane thickness
C. Adequacy of dialysis based on urea removal
D. Ultrafiltration volume
E. Heparin dosage
CORRECT ANSWER: C. Adequacy of dialysis based on urea removal
EXPERT RATIONALE: Kt/V is a dimensionless index measuring dialysis adequacy. K =
dialyzer clearance of urea, t = treatment time, V = volume of distribution of urea. A
minimum delivered Kt/V of 1.2 per session is recommended.
8. What is the minimum recommended Kt/V for an adequately dialyzed
patient per KDOQI guidelines?
