CERTIFIED CLINICAL HEMODIALYSIS TECHNICIAN (CCHT) EXAM
–QUESTIONS AND ANSWERS | VERIFIED AND WELL DETAILED
ANSWERS PLUS RATIONALES | GUARANTEED PASS | LATEST
EXAM UPDATE | EXAM PREP | STUDY GUIDE | PRACTICE
TEST| DOWNLOAD INSTANT PDF
1. A patient arrives at the outpatient hemodialysis clinic exhibiting a pre-treatment blood
pressure of 184/98 mmHg, mild peripheral edema, and a weight gain of 4.2 kg over their
dry weight since their last treatment. What is the primary operational and clinical
implication for the CCHT during setup?
A. Notify the nurse immediately so the target ultrafiltration rate and treatment parameters can be safely
adjusted for fluid removal
B. Proceed with the standard pre-programmed machine settings since blood pressure fluctuations are
common in end-stage renal disease
C. Decrease the dialysate temperature to maximum to prevent cramping without checking with the
licensed nurse first
D. Cancel the hemodialysis treatment entirely and send the patient home immediately without medical
consultation
Correct Answer: A. Notify the nurse immediately so the target ultrafiltration rate and
treatment parameters can be safely adjusted for fluid removal
Rationale: A weight gain of 4.2 kg combined with severe hypertension indicates acute fluid
overload, requiring clinical evaluation and adjustment of the ultrafiltration prescription by
licensed nursing staff.
2. During the pre-treatment evaluation of an established arteriovenous fistula (AVF) in a
patient's left forearm, the CCHT palpates a continuous vibration and auscultates a low-
pitched humming sound. How should the technician document these physical assessment
findings?
A. Normal thrill and bruit present, indicating a patent and functioning vascular access
B. Absent vascular access signs requiring immediate surgical ligation
C. Critical access failure characterized by complete thrombosis of the vessel
D. Severe aneurysmal dilation requiring immediate needle cannulation avoidance
Correct Answer: A. Normal thrill and bruit present, indicating a patent and functioning
vascular access
,Rationale: A palpable thrill (vibration) and an auscultated bruit (humming sound) are the
standard, healthy indicators of adequate blood flow and turbulence in a native fistula.
3. Before initiating a morning hemodialysis shift, the CCHT performs the daily total
chlorine test on the water treatment system downstream from the primary granular
activated carbon (GAC) tank. The test result reads 0.15 mg/L. What is the mandatory next
step?
A. Immediately halt all clinic machine preparation, notify the biomedical technician and charge nurse,
and prevent treatment initiation until levels are safe
B. Document the result in the logbook and proceed with priming the extracorporeal circuits since the
value is negligible
C. Flush the water loop with warm saline for ten minutes and retest using a different colorimetric vial
D. Increase the water flow rate through the reverse osmosis unit to dilute the residual chlorine
concentration
Correct Answer: A. Immediately halt all clinic machine preparation, notify the biomedical
technician and charge nurse, and prevent treatment initiation until levels are safe
Rationale: According to AAMI standards, total chlorine must not exceed 0.1 mg/L. A reading
of 0.15 mg/L indicates carbon tank breakthrough, which causes fatal acute hemolysis if
exposed to patient blood.
4. A CCHT is preparing to cannulate a patient's synthetic arteriovenous graft (AVG).
Which aseptic technique principle is most critical prior to needle insertion?
A. Apply an approved antiseptic solution and allow it to dry completely according to manufacturer
contact-time recommendations before touching the skin
B. Scrub the skin vigorously with soap and warm tap water for exactly 60 seconds immediately before
piercing
C. Palpate the cannulation site repeatedly after skin sanitization to ensure the needle path is memorized
D. Wipe the skin with sterile alcohol pads and insert the needles while the surface is still wet to
maximize cooling
Correct Answer: A. Apply an approved antiseptic solution and allow it to dry completely
according to manufacturer contact-time recommendations before touching the skin
Rationale: Antiseptics require adequate drying time (e.g., chlorhexidine/alcohol) to achieve
maximum antimicrobial efficacy. Touching the skin after prep or inserting through wet skin
compromises sterility.
, 5. While priming an extracorporeal blood circuit and hollow-fiber dialyzer, the CCHT
notices visible air bubbles trapped in the upper header of the dialyzer. What is the correct
procedure to eliminate these bubbles?
A. Place the dialyzer in a vertical position with the venous end pointing upward and tap gently while
maintaining blood pump prime flow
B. Increase the dialysate temperature to 40 degrees Celsius to expand and drive out the trapped gas
molecules
C. Clamp the venous line completely and run the blood pump at maximum speed in reverse
D. Discard the entire blood tubing set and dialyzer immediately as defective equipment
Correct Answer: A. Place the dialyzer in a vertical position with the venous end pointing
upward and tap gently while maintaining blood pump prime flow
Rationale: Positioning the dialyzer vertically with the venous end up allows trapped air in the
fibers and headers to be swept upward and out of the circuit during priming.
6. A patient undergoing routine maintenance hemodialysis suddenly complains of
lightheadedness, yawning, and nausea 90 minutes into the run. The blood pressure drops
from 130/80 mmHg to 90/50 mmHg. What is the most likely cause of this acute event?
A. Intradialytic hypotension resulting from rapid ultrafiltration exceeding the plasma refill rate
B. Dialysis disequilibrium syndrome caused by excessively slow urea removal
C. An acute allergic reaction to the ethylene oxide sterilant in a brand-new dialyzer
D. Severe hyperkalemia leading to sudden ventricular fibrillation and cardiac arrest
Correct Answer: A. Intradialytic hypotension resulting from rapid ultrafiltration exceeding
the plasma refill rate
Rationale: Yawning, nausea, and dizziness are classic early symptoms of intradialytic
hypotension triggered by pulling fluid off faster than interstitial fluid can refill the vascular
space.
7. When performing quality control checks on the hemodialysis machine's conductivity and
pH monitors prior to treatment, the CCHT finds that the machine-displayed conductivity
differs significantly from an independent meter reading of the collected dialysate sample.
What action should be taken?
A. Remove the machine from service, label it out of order, and notify the biomedical department for
calibration
–QUESTIONS AND ANSWERS | VERIFIED AND WELL DETAILED
ANSWERS PLUS RATIONALES | GUARANTEED PASS | LATEST
EXAM UPDATE | EXAM PREP | STUDY GUIDE | PRACTICE
TEST| DOWNLOAD INSTANT PDF
1. A patient arrives at the outpatient hemodialysis clinic exhibiting a pre-treatment blood
pressure of 184/98 mmHg, mild peripheral edema, and a weight gain of 4.2 kg over their
dry weight since their last treatment. What is the primary operational and clinical
implication for the CCHT during setup?
A. Notify the nurse immediately so the target ultrafiltration rate and treatment parameters can be safely
adjusted for fluid removal
B. Proceed with the standard pre-programmed machine settings since blood pressure fluctuations are
common in end-stage renal disease
C. Decrease the dialysate temperature to maximum to prevent cramping without checking with the
licensed nurse first
D. Cancel the hemodialysis treatment entirely and send the patient home immediately without medical
consultation
Correct Answer: A. Notify the nurse immediately so the target ultrafiltration rate and
treatment parameters can be safely adjusted for fluid removal
Rationale: A weight gain of 4.2 kg combined with severe hypertension indicates acute fluid
overload, requiring clinical evaluation and adjustment of the ultrafiltration prescription by
licensed nursing staff.
2. During the pre-treatment evaluation of an established arteriovenous fistula (AVF) in a
patient's left forearm, the CCHT palpates a continuous vibration and auscultates a low-
pitched humming sound. How should the technician document these physical assessment
findings?
A. Normal thrill and bruit present, indicating a patent and functioning vascular access
B. Absent vascular access signs requiring immediate surgical ligation
C. Critical access failure characterized by complete thrombosis of the vessel
D. Severe aneurysmal dilation requiring immediate needle cannulation avoidance
Correct Answer: A. Normal thrill and bruit present, indicating a patent and functioning
vascular access
,Rationale: A palpable thrill (vibration) and an auscultated bruit (humming sound) are the
standard, healthy indicators of adequate blood flow and turbulence in a native fistula.
3. Before initiating a morning hemodialysis shift, the CCHT performs the daily total
chlorine test on the water treatment system downstream from the primary granular
activated carbon (GAC) tank. The test result reads 0.15 mg/L. What is the mandatory next
step?
A. Immediately halt all clinic machine preparation, notify the biomedical technician and charge nurse,
and prevent treatment initiation until levels are safe
B. Document the result in the logbook and proceed with priming the extracorporeal circuits since the
value is negligible
C. Flush the water loop with warm saline for ten minutes and retest using a different colorimetric vial
D. Increase the water flow rate through the reverse osmosis unit to dilute the residual chlorine
concentration
Correct Answer: A. Immediately halt all clinic machine preparation, notify the biomedical
technician and charge nurse, and prevent treatment initiation until levels are safe
Rationale: According to AAMI standards, total chlorine must not exceed 0.1 mg/L. A reading
of 0.15 mg/L indicates carbon tank breakthrough, which causes fatal acute hemolysis if
exposed to patient blood.
4. A CCHT is preparing to cannulate a patient's synthetic arteriovenous graft (AVG).
Which aseptic technique principle is most critical prior to needle insertion?
A. Apply an approved antiseptic solution and allow it to dry completely according to manufacturer
contact-time recommendations before touching the skin
B. Scrub the skin vigorously with soap and warm tap water for exactly 60 seconds immediately before
piercing
C. Palpate the cannulation site repeatedly after skin sanitization to ensure the needle path is memorized
D. Wipe the skin with sterile alcohol pads and insert the needles while the surface is still wet to
maximize cooling
Correct Answer: A. Apply an approved antiseptic solution and allow it to dry completely
according to manufacturer contact-time recommendations before touching the skin
Rationale: Antiseptics require adequate drying time (e.g., chlorhexidine/alcohol) to achieve
maximum antimicrobial efficacy. Touching the skin after prep or inserting through wet skin
compromises sterility.
, 5. While priming an extracorporeal blood circuit and hollow-fiber dialyzer, the CCHT
notices visible air bubbles trapped in the upper header of the dialyzer. What is the correct
procedure to eliminate these bubbles?
A. Place the dialyzer in a vertical position with the venous end pointing upward and tap gently while
maintaining blood pump prime flow
B. Increase the dialysate temperature to 40 degrees Celsius to expand and drive out the trapped gas
molecules
C. Clamp the venous line completely and run the blood pump at maximum speed in reverse
D. Discard the entire blood tubing set and dialyzer immediately as defective equipment
Correct Answer: A. Place the dialyzer in a vertical position with the venous end pointing
upward and tap gently while maintaining blood pump prime flow
Rationale: Positioning the dialyzer vertically with the venous end up allows trapped air in the
fibers and headers to be swept upward and out of the circuit during priming.
6. A patient undergoing routine maintenance hemodialysis suddenly complains of
lightheadedness, yawning, and nausea 90 minutes into the run. The blood pressure drops
from 130/80 mmHg to 90/50 mmHg. What is the most likely cause of this acute event?
A. Intradialytic hypotension resulting from rapid ultrafiltration exceeding the plasma refill rate
B. Dialysis disequilibrium syndrome caused by excessively slow urea removal
C. An acute allergic reaction to the ethylene oxide sterilant in a brand-new dialyzer
D. Severe hyperkalemia leading to sudden ventricular fibrillation and cardiac arrest
Correct Answer: A. Intradialytic hypotension resulting from rapid ultrafiltration exceeding
the plasma refill rate
Rationale: Yawning, nausea, and dizziness are classic early symptoms of intradialytic
hypotension triggered by pulling fluid off faster than interstitial fluid can refill the vascular
space.
7. When performing quality control checks on the hemodialysis machine's conductivity and
pH monitors prior to treatment, the CCHT finds that the machine-displayed conductivity
differs significantly from an independent meter reading of the collected dialysate sample.
What action should be taken?
A. Remove the machine from service, label it out of order, and notify the biomedical department for
calibration
