CERTIFIED HEMODIALYSIS TECHNICIAN | LATEST QUESTIONS
WITH VERIFIED ANSWERS - UPDATED 2026/2027
Q1. What is the primary purpose of a pre-dialysis assessment? | ANSWER
To establish a baseline, identify complications, and ensure the patient is
safe to initiate treatment.
Q2. What specific vascular access assessment must be performed before
every treatment? | ANSWER Check for a bruit (vibration) and thrill
(pulsation), and inspect for signs of infection.
Q3. What are the classic signs and symptoms of fluid overload
(hypervolemia) in a dialysis patient? | ANSWER Elevated blood pressure,
shortness of breath, edema (periorbital, peripheral, or sacral), jugular
venous distention (JVD), and crackles in the lungs.
Q4. What is the normal range for an adult resting respiratory rate? |
ANSWER 12 to 20 breaths per minute.
Q5. Why is the predialysis weight so critical? | ANSWER It is used to
calculate the exact amount of fluid to be removed during the treatment
(estimated dry weight minus predialysis weight).
Q6. What does "dry weight" (EDW) mean? | ANSWER The target post-
dialysis weight at which the patient has no excess fluid, but is not
dehydrated (usually no signs of edema or hypotension).
Q7. What orthostatic vital signs indicate a positive (abnormal) result? |
ANSWER A drop in systolic blood pressure of ≥20 mmHg, a drop in
diastolic blood pressure of ≥10 mmHg, or an increase in heart rate of ≥20
bpm when moving from lying to standing.
Q8. What condition is indicated by a "bounding" or "water-hammer"
pulse? | ANSWER Aortic regurgitation, hyperthyroidism, or significantly
increased cardiac output (often seen in severe anemia or AV fistulas).
Q9. What is the normal adult temperature range? | ANSWER 97.8°F to
99.1°F (36.5°C to 37.3°C).
,Q10. Why might a dialysis patient have a low baseline temperature? |
ANSWER Uremia and poor peripheral circulation often lower a dialysis
patient's baseline body temperature.
Q11. What is the primary concern if a patient's predialysis blood pressure
is significantly elevated (e.g., 200/110 mmHg)? | ANSWER Risk of stroke,
but treatment should usually still be initiated cautiously to avoid rapid
fluid shifts.
Q12. What does a S3 gallop (third heart sound) indicate in a dialysis
patient? | ANSWER Heart failure or fluid overload.
Q13. What assessment finding suggests a localized infection in an AV
fistula? | ANSWER Redness, warmth, swelling, tenderness, or purulent
drainage at the access site.
Q14. What is "steal syndrome" in relation to vascular access? | ANSWER
A condition where blood is diverted away from the hand into the fistula,
causing hand pain, numbness, or coldness during dialysis.
Q15. What is the normal capillary refill time? | ANSWER Less than 2 to 3
seconds.
Q16. What does a prolonged capillary refill time indicate? | ANSWER
Poor peripheral perfusion, potential hypovolemia, or vascular disease.
Q17. Why is it important to ask a patient about their last bowel
movement before dialysis? | ANSWER Constipation can inhibit fluid
removal and contribute to high potassium levels.
Q18. What is the significance of checking for asterixis (flapping tremor)? |
ANSWER It is a clinical sign of hepatic encephalopathy or severe
uremia/toxin buildup.
Q19. What should the technician immediately report regarding a patient's
mental status? | ANSWER Sudden confusion, lethargy, or altered level of
consciousness (could indicate severe dysequilibrium, stroke, or air
embolism).
Q20. How often must vital signs typically be monitored during a standard
dialysis treatment? | ANSWER Every 30 minutes, or more frequently if
the patient is unstable.
, Q21. What does a post-dialysis assessment focus on? | ANSWER Ensuring
hemostasis at the access site, verifying the patient's post-weight, checking
vital signs for hypotension, and ensuring the patient is safe to leave.
Q22. What is a "hard sign" of vascular access steal syndrome? | ANSWER
Ischemic ulceration or gangrene of the fingertips.
Q23. What does Kussmaul breathing indicate in a renal patient? |
ANSWER Metabolic acidosis (the body trying to blow off CO2 to
compensate).
Q24. Why is it important to assess the patient's diet and appetite? |
ANSWER Poor appetite can lead to protein-energy wasting (PEW) and
malnutrition, which increases mortality in ESRD.
Q25. What does a "frothy" or "pink" sputum suggest? | ANSWER
Pulmonary edema (fluid in the lungs).
Q26. What is the significance of a patient complaining of a "metallic taste"
in their mouth? | ANSWER It is a classic sign of uremia and toxin buildup.
Q27. What is the normal resting heart rate for an adult? | ANSWER 60 to
100 beats per minute.
Q28. Why should the technician look at the patient's skin turgor? |
ANSWER To assess hydration status; poor skin turgor (tenting) indicates
dehydration.
Q29. What is a "bruit"? | ANSWER The swishing sound heard through a
stethoscope over a functioning AV fistula or graft, indicating turbulent
blood flow.
Q30. What is a "thrill"? | ANSWER The vibrating sensation felt with the
fingertips over a functioning AV fistula or graft.
Category 2: Machine Setup, Operation & Alarms (31-60)
Q31. What is the primary function of the blood pump in a dialysis
machine? | ANSWER To pull blood from the patient, push it through the
dialyzer, and return it at a prescribed rate (usually 200-500 mL/min).
Q32. What is the standard gauge of needles used for hemodialysis? |
ANSWER 15-gauge (most common for adults) or 16-gauge.
WITH VERIFIED ANSWERS - UPDATED 2026/2027
Q1. What is the primary purpose of a pre-dialysis assessment? | ANSWER
To establish a baseline, identify complications, and ensure the patient is
safe to initiate treatment.
Q2. What specific vascular access assessment must be performed before
every treatment? | ANSWER Check for a bruit (vibration) and thrill
(pulsation), and inspect for signs of infection.
Q3. What are the classic signs and symptoms of fluid overload
(hypervolemia) in a dialysis patient? | ANSWER Elevated blood pressure,
shortness of breath, edema (periorbital, peripheral, or sacral), jugular
venous distention (JVD), and crackles in the lungs.
Q4. What is the normal range for an adult resting respiratory rate? |
ANSWER 12 to 20 breaths per minute.
Q5. Why is the predialysis weight so critical? | ANSWER It is used to
calculate the exact amount of fluid to be removed during the treatment
(estimated dry weight minus predialysis weight).
Q6. What does "dry weight" (EDW) mean? | ANSWER The target post-
dialysis weight at which the patient has no excess fluid, but is not
dehydrated (usually no signs of edema or hypotension).
Q7. What orthostatic vital signs indicate a positive (abnormal) result? |
ANSWER A drop in systolic blood pressure of ≥20 mmHg, a drop in
diastolic blood pressure of ≥10 mmHg, or an increase in heart rate of ≥20
bpm when moving from lying to standing.
Q8. What condition is indicated by a "bounding" or "water-hammer"
pulse? | ANSWER Aortic regurgitation, hyperthyroidism, or significantly
increased cardiac output (often seen in severe anemia or AV fistulas).
Q9. What is the normal adult temperature range? | ANSWER 97.8°F to
99.1°F (36.5°C to 37.3°C).
,Q10. Why might a dialysis patient have a low baseline temperature? |
ANSWER Uremia and poor peripheral circulation often lower a dialysis
patient's baseline body temperature.
Q11. What is the primary concern if a patient's predialysis blood pressure
is significantly elevated (e.g., 200/110 mmHg)? | ANSWER Risk of stroke,
but treatment should usually still be initiated cautiously to avoid rapid
fluid shifts.
Q12. What does a S3 gallop (third heart sound) indicate in a dialysis
patient? | ANSWER Heart failure or fluid overload.
Q13. What assessment finding suggests a localized infection in an AV
fistula? | ANSWER Redness, warmth, swelling, tenderness, or purulent
drainage at the access site.
Q14. What is "steal syndrome" in relation to vascular access? | ANSWER
A condition where blood is diverted away from the hand into the fistula,
causing hand pain, numbness, or coldness during dialysis.
Q15. What is the normal capillary refill time? | ANSWER Less than 2 to 3
seconds.
Q16. What does a prolonged capillary refill time indicate? | ANSWER
Poor peripheral perfusion, potential hypovolemia, or vascular disease.
Q17. Why is it important to ask a patient about their last bowel
movement before dialysis? | ANSWER Constipation can inhibit fluid
removal and contribute to high potassium levels.
Q18. What is the significance of checking for asterixis (flapping tremor)? |
ANSWER It is a clinical sign of hepatic encephalopathy or severe
uremia/toxin buildup.
Q19. What should the technician immediately report regarding a patient's
mental status? | ANSWER Sudden confusion, lethargy, or altered level of
consciousness (could indicate severe dysequilibrium, stroke, or air
embolism).
Q20. How often must vital signs typically be monitored during a standard
dialysis treatment? | ANSWER Every 30 minutes, or more frequently if
the patient is unstable.
, Q21. What does a post-dialysis assessment focus on? | ANSWER Ensuring
hemostasis at the access site, verifying the patient's post-weight, checking
vital signs for hypotension, and ensuring the patient is safe to leave.
Q22. What is a "hard sign" of vascular access steal syndrome? | ANSWER
Ischemic ulceration or gangrene of the fingertips.
Q23. What does Kussmaul breathing indicate in a renal patient? |
ANSWER Metabolic acidosis (the body trying to blow off CO2 to
compensate).
Q24. Why is it important to assess the patient's diet and appetite? |
ANSWER Poor appetite can lead to protein-energy wasting (PEW) and
malnutrition, which increases mortality in ESRD.
Q25. What does a "frothy" or "pink" sputum suggest? | ANSWER
Pulmonary edema (fluid in the lungs).
Q26. What is the significance of a patient complaining of a "metallic taste"
in their mouth? | ANSWER It is a classic sign of uremia and toxin buildup.
Q27. What is the normal resting heart rate for an adult? | ANSWER 60 to
100 beats per minute.
Q28. Why should the technician look at the patient's skin turgor? |
ANSWER To assess hydration status; poor skin turgor (tenting) indicates
dehydration.
Q29. What is a "bruit"? | ANSWER The swishing sound heard through a
stethoscope over a functioning AV fistula or graft, indicating turbulent
blood flow.
Q30. What is a "thrill"? | ANSWER The vibrating sensation felt with the
fingertips over a functioning AV fistula or graft.
Category 2: Machine Setup, Operation & Alarms (31-60)
Q31. What is the primary function of the blood pump in a dialysis
machine? | ANSWER To pull blood from the patient, push it through the
dialyzer, and return it at a prescribed rate (usually 200-500 mL/min).
Q32. What is the standard gauge of needles used for hemodialysis? |
ANSWER 15-gauge (most common for adults) or 16-gauge.
