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CCHT Exam Questions and Correct Solutions Graded A+
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CCHT Exam Questions and Correct Solutions Graded A+
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CCHT Exam Questionsand Complete Solutions
Graded A+
The technician has calculated the target weight loss for a patient's hemodialysis session, but the patient
insists that the technician has made an error and that the target is 1 kg too high. The technician should -
Answer: recalculate the target weight loss.
Peritoneal dialysis (PD) differs from hemodialysis in which of the following ways? - Answer: PD access is
by an intra-abdominal catheter
The main difference between an arteriovenous shunt (AVS) and an arteriovenous fistula (AVF) is an: -
Answer: AVF is entirely within the arm.
Which of the following dialyzers is used currently? - Answer: Hollow tube
Which of the following kidney structures connects with and delivers urine directly to the ureter? -
Answer: Pelvis
The glomerular filtration rate is an important index of renal function and in the normal adult is
approximately: - Answer: 125 mL/min/1.73 m2.
All of the following substances are produced by the kidney EXCEPT: - Answer: aldosterone.
The most likely cause of post-renal failure is: - Answer: benign prostatic hypertrophy.
The most common cause of chronic kidney disease in the United States is: - Answer: diabetes.
,Which of the following conditions is LEAST likely to be caused uremia? - Answer: Urinary tract infection
All of following conditions are associated with chronic kidney failure EXCEPT: - Answer:
hypoparathyroidism.
What percentage of transplanted kidneys are functional 1 year after transplantation? - Answer: 90%
Which hemodialysis schedule is likely to be most efficient? - Answer: Short daily home hemodialysis, 2-3
hours a session, 5-7 days a week
The fluid restriction for most patients undergoing in-center hemodialysis is equal to urine volume/day
plus: - Answer: 1 L.
Failure to excrete beta2-microglobulin in patients with kidney failure predisposes the patient to: -
Answer: amyloidosis.
Blood tests for ferritin are performed in hemodialysis patients: - Answer: to check for iron stores.
Which of the following phosphate binders would best control hyperphosphatemia with the fewest side
effects in patients with end stage kidney disease? - Answer: Lanthanum carbonate
Hemodialysis patients should be taught to: - Answer: put in their own needles, weigh themselves and
record it, check their dialyzer settings and dialysate
All of the following statements about vitamins in dialysis patients are true EXCEPT: - Answer: dialysis
does not remove water-soluble vitamins
Osmosis is best defined as - Answer: diffusion of solvent through a semipermeable membrane from low-
to high-solute concentration
In hemodialysis, blood and dialysate have which of the following properties? - Answer: They flow in
opposite directions
,In the dialyzer, water may be removed from: - Answer: intravascular compartment
Which site in the hemodialysis pathway has the highest positive pressure? - Answer: Blood entering the
dialyzer fibers
The term "sieving coefficient of a membrane" refers to the: - Answer: fraction of solute that passes
through the membrane by convection.
Water moves from one body compartment to another by: - Answer: osmotic forces.
Biocompatibility is best illustrated by - Answer: reprocessed dialyzers that have a better biocompatibility
than new ones
The amount of fluid to be taken from the patient during hemodialysis: - Answer: may be calculated by
adding the patient's pre-dialysis weight and the amount of fluid the patient receives during treatment.
The ultrafiltration coefficient of a dialyzer refers to the: - Answer: fluid that passes through the
membrane in 1 hour.
The molecular weight cutoff of a dialyzer is 12,000 daltons. Which of the following molecules would not
pass through the membrane into the dialysate? - Answer: Albumin
Clearance of low-molecular-weight molecules by dialysis is accomplished mostly by: - Answer: diffusion.
A hollow fiber dialyzer has which of the following properties? - Answer: Very fine fiber tubes held in
place by polyurethane material
Synthetic membranes have which of the following properties? - Answer: They have thick fiber walls
If a dialyzer has a urea clearance rate (K) of 200 mL/min and a blood flow rate (Qb) of 300 mL/min, what
volume of the blood will be cleared of urea in 1 minute? - Answer: 200 mL
, To determine the most accurate clearance rate of a particular solute, one should: - Answer: measure the
solute concentrations of blood going into and out of the dialyzer.
All of the following substances are added to the dialysate EXCEPT: - Answer: phosphate.
Sodium modeling refers to: - Answer: changing the concentration of the dialysate sodium during the
course of dialysis
Conductivity is best defined as: - Answer: a method of checking electrolyte levels in the dialysate
Which of the following statements about the proportioning system is correct? - Answer: It relies on a
continuous supply of fresh concentrate and treated water
An advantage of high-flux dialysis is: - Answer: fast removal of fluid
A disadvantage of high-flux dialysis is: - Answer: pyrogen reactions are common
All of the following statements regarding home dialysis are true EXCEPT: - Answer: it cannot be done
during sleep.
In most dialysate systems, the temperature: - Answer: is maintained by a thermistor-controlled heater
Dialysate flow rate has which of the following properties? - Answer: Low water pressure may set off an
alarm
Which of the following statements about blood leaks in the dialysis system is correct? - Answer: They
are detected by use of a light source and photocell
Dialysate pH is kept in which of the following ranges? - Answer: 7.0-7.4
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