Which primary function of the kidneys is most directly replaced by hemodialysis?

Removal of metabolic waste products

Standard precautions are applied in dialysis settings for which purpose?

For all patients regardless of diagnosis

Only when a patient is known to be infectious

Only during invasive procedures

Only during machine disinfection

Topic Name: Role of the Dialysis Team Members Which task is within the scope of practice of a dialysis technician?

Performing dialysis treatments as directed

Prescribing dialysis medications

Diagnosing access complications

Adjusting dialysis prescriptions

Standard precautions in dialysis care are designed to prevent transmission of which type of pathogens?

All potentially infectious agents

Gastrointestinal pathogens only

CCHT Exam

Free CCHT Practice Questions

10 sample questions for the CCHT Exam, with the correct answer and an explanation for each. No account needed. Try each one before you open the answer.

Sections covered on the exam: The Clinical Section, The Technical Section, The Environment Section, The Role Responsibilities Section.

Question 1 · The Clinical Section
Which primary function of the kidneys is most directly replaced by hemodialysis?
- A.Hormone secretion
- B.Regulation of blood glucose
- C.Removal of metabolic waste products
- D.Production of red blood cells
Show answer and explanation
Answer: C. Removal of metabolic waste products
Hemodialysis primarily replaces the kidney function of removing metabolic waste products such as urea and creatinine from the blood. Hormone production and red blood cell stimulation are not replaced by dialysis. Topic Name: Anatomy and Physiology
Question 2 · The Clinical Section
What is the primary purpose of the air detector in the extracorporeal circuit?
- A.Measure blood temperature
- B.Detect clot formation
- C.Control blood flow rate
- D.Prevent air embolism
Show answer and explanation
Answer: D. Prevent air embolism
The air detector identifies air in the bloodline and stops the blood pump to prevent air embolism, a life-threatening complication. Topic Name: Extracorporeal Circuits
Question 3 · The Technical Section
Topic Name: Scientific Principles of Dialysis
Which principle describes the movement of water across a semipermeable membrane due to pressure?
- A.Diffusion
- B.Osmosis
- C.Conduction
- D.Ultrafiltration
Show answer and explanation
Answer: D. Ultrafiltration
Ultrafiltration is the movement of water across a semipermeable membrane caused by a pressure gradient. This process removes excess fluid during dialysis. Topic Name: Scientific Principles of Dialysis
Question 4 · The Environment Section
Standard precautions are applied in dialysis settings for which purpose?
- A.Only when a patient is known to be infectious
- B.For all patients regardless of diagnosis
- C.Only during invasive procedures
- D.Only during machine disinfection
Show answer and explanation
Answer: B. For all patients regardless of diagnosis
Standard precautions are used for all patients to reduce the risk of transmission of bloodborne pathogens and other infections. Topic Name: Standard Precautions
Question 5 · The Role Responsibilities Section
Topic Name: Role of the Dialysis Team Members
Which task is within the scope of practice of a dialysis technician?
- A.Performing dialysis treatments as directed
- B.Prescribing dialysis medications
- C.Diagnosing access complications
- D.Adjusting dialysis prescriptions
Show answer and explanation
Answer: A. Performing dialysis treatments as directed
Dialysis technicians perform treatments according to prescribed orders and facility protocols but do not diagnose or prescribe. Topic Name: Role of the Dialysis Team Members
Question 6 · The Clinical Section
Difficulty mix maintained across easy, moderate, and hard levels
Which kidney function helps regulate blood pressure and is only partially supported by dialysis?
- A.Filtration of urea
- B.Fluid removal
- C.Renin secretion
- D.Electrolyte diffusion
Show answer and explanation
Answer: C. Renin secretion
The kidneys help regulate blood pressure through renin secretion. Dialysis does not replace this hormonal function. Topic Name: Anatomy and Physiology
Question 7 · The Clinical Section
Which alarm is triggered when air is detected in the venous line?
- A.Arterial pressure alarm
- B.Air detector alarm
- C.Blood leak alarm
- D.Conductivity alarm
Show answer and explanation
Answer: B. Air detector alarm
The air detector alarm stops blood flow to prevent air embolism. Topic Name: Extracorporeal Circuits
Question 8 · The Technical Section
Topic Name: Scientific Principles of Dialysis
Which factor most directly increases diffusion during dialysis?
- A.Lower dialysate flow rate
- B.Higher concentration gradient
- C.Reduced membrane surface area
- D.Shorter treatment time
Show answer and explanation
Answer: B. Higher concentration gradient
Diffusion increases when the concentration difference between blood and dialysate is greater, allowing solutes to move more efficiently across the membrane. Topic Name: Scientific Principles of Dialysis
Question 9 · The Environment Section
Standard precautions in dialysis care are designed to prevent transmission of which type of pathogens?
- A.Airborne pathogens only
- B.All potentially infectious agents
- C.Bloodborne pathogens only
- D.Gastrointestinal pathogens only
Show answer and explanation
Answer: B. All potentially infectious agents
Standard precautions assume that all blood and certain body fluids may be infectious and are applied to all patients to reduce transmission risk. Topic Name: Standard Precautions
Question 10 · The Role Responsibilities Section
Topic Name: Role of the Dialysis Team Members
Which team member is responsible for developing the dialysis treatment prescription?
- A.Nephrologist
- B.Registered nurse
- C.Dialysis technician
- D.Biomedical technician
Show answer and explanation
Answer: A. Nephrologist
The nephrologist prescribes the dialysis treatment plan based on patient needs. Topic Name: Role of the Dialysis Team Members

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