ccht practice test 5.0
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| 1.Which of the following best describes the reason for wearing gloves when handling machine prior to blood? a) patient comfort b) asepsis c) universal precautions d) HIV | c) universal precautions
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| 2 You test for sterilant levels in a hemodialysis machine prior to patient use. The test is positive for sterilant. This means the machine: a) is sterile & bacteria free b) needs further rinsing c) needs more sterilant d) is in conductivity | b) needs further rinsing
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| 4.Hemodialysis requires a means to channel the patient's blood to the hemodialyzer & then back to the body. It's called: a) vascular access b) hemodialyzer c) dialyzing fluid delivery system d) infusion pump | a) vascular access
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| 5.Which of the following is correct regarding a fistula? a) usually created in the leg, near the ankle b) usually created in the forearm, near the wrist c) are made of salastic tubing d) none of the above | b) usually created in the forearm, near the wrist
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| 6.Blood leak detectors are extremely sensitive & can determine: a) blood type b) amount of blood loss c) blood leakage immediately d) volume changes e) serum potassium levels | c) blood leakage immediately
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| 7.Which of the following foods are high in potassium? a) milk, ice cream, yogurt b) legumes, cheese, pizza c) chips, colas, canned meat d) bananas, tomatoes, oranges | d) bananas, tomatoes, oranges
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| 8.What lab values are monitored for assessing bone disease? a) calcium, phosphorus & PTH b) calcium, phosphorus & albumin c) calcium, phosphorus & potassium d) calcium, phosphorus & magnesium | a) calcium, phosphorus & PTH
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| 9.Which is the most common cause of chronic kidney failure in the US? a) diabetes b) hypertension c) polycystic kidney smaller molecular disease d) glomerulonephritis | a) diabetes
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| 10.The reason potassium dialyzes and RBC's do not is: a) potassium has a larger molecular weight b) potassium has a smaller molecular weight c) RBC's are not water soluble d) RBC's have a negative charge | b) potassium has a smaller molecular weight
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| 11.Acceptable limits for total chlorines in water for hemodialysis are? a) less than 0 .1mg/L (ppm) b) 0.5 mg/L to 1 mg/L(ppm) c) 3.5 mg/L to 5.5 mg/L to 5.5 mg/L(ppm) d) greater than 6.0 mg/L(ppm) | a) less than 0 .1mg/L (ppm)
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| 12.If a new patient starts with a very high BUN, dialysis is purposely made less efficient to prevent: a) rapid decrease in hct b) dialysis disequilibrium syndrome c) cardiac arrhythmia's d) excessive coagulation | b) dialysis disequilibrium syndrome
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| 13.The following are factors in poor clearance during dialysis except: a) poor dialyzer reuse b) access recirculation c) low hematocrit d) low blood flow rate | c) low hematocrit
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| 14.The movement of water from an area of low solute concentration to an area of high solute concentration is called: a) diffusion b) osmosis c) ultrafiltration d) dialysis | b) osmosis
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| 15.Potting compound, casing, fibers and headers are part of a: a) dialysis machine b) water treatment system c) R. O. system d) dialyzer | d) dialyzer
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| 17.A hematocrit test indicates which of the following? a) concentration of platelets b) concentration of creatinine in the blood c) concentration of red blood cells in the blood d) concentration of white blood cells in the blood | c) concentration of red blood cells in the blood
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| 18.What factors should be considered when establishing a patient's dry weight? a) blood pressure b) patient well being c) evidence of dehydration or fluid overload d) all of the above | d) all of the above
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| 19.In a dialysis machine, the proportioning system does what? a) prepare the dialysate to the proper pH b) warm the dialysate to the proper temperature c) appropriately mix the dialysate concentrates with water d) to monitor the dialysate flow rate | c) appropriately mix the dialysate concentrates with water
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| 20.The complication in which blood has a "cherry pop"appearance is: a) blood leak b) air embolism c) hemolysis d) none of the above | c) hemolysis
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| 21.The use of high a sodium dialysate may predispose a patient to: a) fluid overload b) hypertension c) thirst d) all of the above | d) all of the above
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| 22.The capability of a dialyzer to remove fluid, expressed as ml/mmHg/hr is: a) UF Coefficient b) clearance c) surface area d) priming volume | a) UF Coefficient
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| 23.A pre-pump arterial pressure reading is measuring: a) the pressure required to pump the blood through the dialyzer b) resistance to blood flow out of the access c) pressure within the dialyzer d) none of the above | b) resistance to blood flow out of the access
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| 24.What determines the surface area of a hollow fiber dialyzer? a) number of fibers b) internal diameter of fibers c) length of fibers | d) all of the above
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| 25.The purpose of using counter-current flow is to: a) increase the rate of fluid removal b) increase the rate of waste removal c) decrease the amount of dialysate used d) decrease the surface area of the membrane | b) increase the rate of waste removal
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| 26.Chloramine exposure in dialysis can result in: a) hypernatremia b) hemolysis c) pericarditis d) bleeding | b) hemolysis
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| 27.Part of the reuse process involves the reuse machine testing the dialyzer to verify: a) the dialyzer is free of sterilant b) the dialyzer is free of bacteria c) the dialyzer is free of endotoxins d) the dialyzer fibers are free of leaks | d) the dialyzer fibers are free of leaks
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| 28.According to AAMI RD52, what is the maximum allowable level of bacteria in dialysate? a) 1,000 CFU's b) 50 CFU's c) 200 CFU's d) 500 CFU's | c) 200 CFU's
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| 29.According to AAMI RD52, how often should bacterial cultures be sampled? a) weekly b) monthly c) quarterly d) annually | b) monthly
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| 30.According to AAMI RD52, what is the action level for bacteria in dialysate? a) 50 CFU's b) 75 CFU's c) 100 CFU's d) 200 CFU's | a) 50 CFU's
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| 31.Bacterial exposure from water may cause which of the following symptoms? a) hemolysis b) fever/chills c) bone disease d) hypotension | b) fever/chills
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| 32.Who developed the first permanent blood access, the "Shunt"? a) Scribner and Quinton b) Kolff c) Brescia and Cimino d) Turner | a) Scribner and Quinton
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| 33.Venous pressure meters are calibrated in: a) PSI b) mm/Hg c) mL/hour d) mg% | b) mm/Hg
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| 34.TPM is measured as: a) mL/hr b) mm/Hg c) mL/min d) none of the above | b) mm/Hg
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| 35.The hemodialysis machine continuously monitors many parameters. Which of these parameters must be verified by an external measuring device? a) blood flow b) dialysate flow c) pH and conductivity d) temperature and transmembrane pressure | c) pH and conductivity
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| 36.Prior to each patient shift, it would be essential to perform a water quality check for which of these substances? a) calcium and magnesium b) chlorine and chloramine c) organic contaminants d) inorganic contaminants | b) chlorine and chloramine
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| 37.The term pH is a measurement of the concentration of: a) all ions in solution b) hydrogen ions c) bicarbonate ions d) acetate ions | b) hydrogen ions
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| 39.What can dialysis staff do to reduce the risk of being infected with a blood borne pathogen? a) proper hand washing b) universal precautions c) proper sharps disposal d) all of the above | d) all of the above
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| 40.Which of the following are ways to handle chemicals safely? a) wash hands before eating or drinking b) wear protective clothing c) don't eat or drink in the work area d) all of the above | d) all of the above
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| 41.What is the correct angle in which to cannulate a fistula? a) 10-15 degrees b) 25-35 degrees c) 35-45 degrees d) it dosen't matter | b) 25-35 degrees
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| 42.Which of the following affects access recirculation? a) distance between the tips of the needles b) presence of stenosis c) direction of needles d) all of the above | d) all of the above
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| 43.The technician observes that the hardness reading after the water softener isabove the acceptable limit. The technician should check the softener tank's level of: a) salt b) chlorine c) carbon d) sand | a) salt
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| 50. During hemodialysis a patient goes into cardiac arrest. Which of these actions shouldbe taken first? a) apply a precordial thump to the patient b) call for help c) return the patient's blood d) stop ultrafiltration | b) call for help
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