Fresenius Hemodialysis Study Guide Exam
2025 – Complete Verified Questions and
100% Correct Answers with Detailed
Explanations
Prepared for Clinical Hemodialysis Technician Certification
Updated for 2025/2026 Certification Cycle
July 23, 2025
,Contents
1 Introduction 4
2 Questions and Answers 4
2.1 What are the main functions of a healthy kidney? . . . . . . . . . . . . . 4
2.2 What is the anatomical order of urine flow in the urinary system? . . . . 4
2.3 What is hemodialysis, and how does it work? . . . . . . . . . . . . . . . 4
2.4 What is the dialysis technician’s role in patient education? . . . . . . . . 4
2.5 What PPE is mandatory in the dialysis patient care area? . . . . . . . . 4
2.6 What is the function of erythropoietin in the body? . . . . . . . . . . . . 5
2.7 What is the synthetic erythropoietin used in dialysis? . . . . . . . . . . . 5
2.8 What is the synthetic vitamin D used for dialysis patients? . . . . . . . . 5
2.9 What is the leading cause of chronic renal failure? . . . . . . . . . . . . . 5
2.10 Why is a pre-dialysis evaluation performed? . . . . . . . . . . . . . . . . 5
2.11 What is the recommended bleach solution for large blood spills? . . . . . 5
2.12 What is the maximum allowable chlorine level in dialysis water? . . . . . 5
2.13 What does Kt/V measure in dialysis? . . . . . . . . . . . . . . . . . . . . 6
2.14 What are signs of dialyzer clotting during treatment? . . . . . . . . . . . 6
2.15 What is the purpose of heparin in dialysis? . . . . . . . . . . . . . . . . . 6
2.16 What is the normal blood flow rate in hemodialysis? . . . . . . . . . . . 6
2.17 What is the dialysate flow rate typically set at? . . . . . . . . . . . . . . 6
2.18 What is ultrafiltration in dialysis? . . . . . . . . . . . . . . . . . . . . . . 6
2.19 What is the target dry weight in dialysis? . . . . . . . . . . . . . . . . . 6
2.20 What are the signs of hypotension during dialysis? . . . . . . . . . . . . 7
2.21 What is the role of bicarbonate in dialysate? . . . . . . . . . . . . . . . . 7
2.22 What is the purpose of a reverse osmosis system in dialysis? . . . . . . . 7
2.23 What is the acceptable pH range for dialysate? . . . . . . . . . . . . . . 7
2.24 What is the conductivity range for dialysate? . . . . . . . . . . . . . . . 7
2.25 What is the purpose of a vascular access in dialysis? . . . . . . . . . . . 7
2.26 What is the “rule of 6s” for fistula maturation? . . . . . . . . . . . . . . 7
2.27 What is the most common complication of a catheter access? . . . . . . . 8
2.28 What is the needle gauge typically used for dialysis? . . . . . . . . . . . 8
2.29 What is the “buttonhole” technique in dialysis? . . . . . . . . . . . . . . 8
2.30 What is the purpose of priming the dialyzer? . . . . . . . . . . . . . . . . 8
2.31 What is the most common dialyzer membrane type? . . . . . . . . . . . 8
2.32 What is the difference between high-flux and low-flux dialyzers? . . . . . 8
2.33 What is the purpose of the venous pressure alarm? . . . . . . . . . . . . 8
2.34 What is an air embolism, and how is it prevented? . . . . . . . . . . . . 8
2.35 What is the normal range for potassium in dialysis patients? . . . . . . . 9
2.36 What is the significance of albumin levels in dialysis patients? . . . . . . 9
2.37 What is the target hemoglobin level for dialysis patients? . . . . . . . . . 9
2.38 What is the purpose of a dialysate culture test? . . . . . . . . . . . . . . 9
2.39 What is a pyrogenic reaction in dialysis? . . . . . . . . . . . . . . . . . . 9
2.40 What is the maximum allowable endotoxin level in dialysate? . . . . . . 9
2.41 What is the purpose of the AAMI standards in dialysis? . . . . . . . . . 9
2.42 What is the role of a carbon tank in water treatment? . . . . . . . . . . 9
2.43 What is the minimum time for disinfecting a dialysis machine? . . . . . . 10
1
, 2.44 What is the purpose of a blood leak detector in dialysis? . . . . . . . . . 10
2.45 What is the normal dialysate temperature? . . . . . . . . . . . . . . . . . 10
2.46 What is the purpose of a conductivity alarm? . . . . . . . . . . . . . . . 10
2.47 What is the first action if a blood leak alarm sounds? . . . . . . . . . . . 10
2.48 What is the purpose of hand cranking during a power outage? . . . . . . 10
2.49 What is the most common cause of anemia in dialysis patients? . . . . . 10
2.50 What is the target phosphorus level in dialysis patients? . . . . . . . . . 10
2.51 What is a phosphate binder, and when is it taken? . . . . . . . . . . . . 11
2.52 What is the purpose of a fistula thrill? . . . . . . . . . . . . . . . . . . . 11
2.53 What is the most common dialysate electrolyte? . . . . . . . . . . . . . . 11
2.54 What is the purpose of a saline flush during dialysis? . . . . . . . . . . . 11
2.55 What is the normal range for calcium in dialysis patients? . . . . . . . . 11
2.56 What is the purpose of a dialyzer reuse program? . . . . . . . . . . . . . 11
2.57 What is the minimum dialyzer clearance rate for urea? . . . . . . . . . . 11
2.58 What is the purpose of a water softener in dialysis? . . . . . . . . . . . . 11
2.59 What is the most common complication of rapid ultrafiltration? . . . . . 12
2.60 What is the purpose of a pre-treatment weight? . . . . . . . . . . . . . . 12
2.61 What is the normal pulse rate for dialysis patients? . . . . . . . . . . . . 12
2.62 What is the purpose of a venous needle in dialysis? . . . . . . . . . . . . 12
2.63 What is the most common cause of high venous pressure? . . . . . . . . 12
2.64 What is the purpose of a dialysate flow meter? . . . . . . . . . . . . . . . 12
2.65 What is the role of a dialysis nurse? . . . . . . . . . . . . . . . . . . . . . 12
2.66 What is the purpose of a post-dialysis weight? . . . . . . . . . . . . . . . 12
2.67 What is the most common dialysate complication? . . . . . . . . . . . . 13
2.68 What is the purpose of a blood pump in dialysis? . . . . . . . . . . . . . 13
2.69 What is the normal range for blood pressure in dialysis patients? . . . . 13
2.70 What is the purpose of a dialyzer flux test? . . . . . . . . . . . . . . . . 13
2.71 What is the most common cause of fever during dialysis? . . . . . . . . . 13
2.72 What is the purpose of a heparin pump? . . . . . . . . . . . . . . . . . . 13
2.73 What is the normal dialysate sodium concentration? . . . . . . . . . . . 13
2.74 What is the purpose of a dialysis treatment log? . . . . . . . . . . . . . . 13
2.75 What is the most common access-related infection? . . . . . . . . . . . . 14
2.76 What is the purpose of a dialysate temperature alarm? . . . . . . . . . . 14
2.77 What is the normal range for hematocrit in dialysis patients? . . . . . . 14
2.78 What is the purpose of a fistula bruit? . . . . . . . . . . . . . . . . . . . 14
2.79 What is the most common cause of low arterial pressure? . . . . . . . . . 14
2.80 What is the purpose of a dialysate pH test? . . . . . . . . . . . . . . . . 14
2.81 What is the most common cause of air detector alarms? . . . . . . . . . 14
2.82 What is the purpose of a dialysate flow alarm? . . . . . . . . . . . . . . . 14
2.83 What is the normal range for urea reduction ratio (URR)? . . . . . . . . 15
2.84 What is the purpose of a dialysis chair scale? . . . . . . . . . . . . . . . 15
2.85 What is the most common cause of muscle cramps during dialysis? . . . 15
2.86 What is the purpose of a dialyzer pressure test? . . . . . . . . . . . . . . 15
2.87 What is the normal range for blood urea nitrogen (BUN) in dialysis patients? 15
2.88 What is the purpose of a dialysis treatment plan? . . . . . . . . . . . . . 15
2.89 What is the most common cause of high TMP? . . . . . . . . . . . . . . 15
2.90 What is the purpose of a water treatment log? . . . . . . . . . . . . . . . 15
2
2025 – Complete Verified Questions and
100% Correct Answers with Detailed
Explanations
Prepared for Clinical Hemodialysis Technician Certification
Updated for 2025/2026 Certification Cycle
July 23, 2025
,Contents
1 Introduction 4
2 Questions and Answers 4
2.1 What are the main functions of a healthy kidney? . . . . . . . . . . . . . 4
2.2 What is the anatomical order of urine flow in the urinary system? . . . . 4
2.3 What is hemodialysis, and how does it work? . . . . . . . . . . . . . . . 4
2.4 What is the dialysis technician’s role in patient education? . . . . . . . . 4
2.5 What PPE is mandatory in the dialysis patient care area? . . . . . . . . 4
2.6 What is the function of erythropoietin in the body? . . . . . . . . . . . . 5
2.7 What is the synthetic erythropoietin used in dialysis? . . . . . . . . . . . 5
2.8 What is the synthetic vitamin D used for dialysis patients? . . . . . . . . 5
2.9 What is the leading cause of chronic renal failure? . . . . . . . . . . . . . 5
2.10 Why is a pre-dialysis evaluation performed? . . . . . . . . . . . . . . . . 5
2.11 What is the recommended bleach solution for large blood spills? . . . . . 5
2.12 What is the maximum allowable chlorine level in dialysis water? . . . . . 5
2.13 What does Kt/V measure in dialysis? . . . . . . . . . . . . . . . . . . . . 6
2.14 What are signs of dialyzer clotting during treatment? . . . . . . . . . . . 6
2.15 What is the purpose of heparin in dialysis? . . . . . . . . . . . . . . . . . 6
2.16 What is the normal blood flow rate in hemodialysis? . . . . . . . . . . . 6
2.17 What is the dialysate flow rate typically set at? . . . . . . . . . . . . . . 6
2.18 What is ultrafiltration in dialysis? . . . . . . . . . . . . . . . . . . . . . . 6
2.19 What is the target dry weight in dialysis? . . . . . . . . . . . . . . . . . 6
2.20 What are the signs of hypotension during dialysis? . . . . . . . . . . . . 7
2.21 What is the role of bicarbonate in dialysate? . . . . . . . . . . . . . . . . 7
2.22 What is the purpose of a reverse osmosis system in dialysis? . . . . . . . 7
2.23 What is the acceptable pH range for dialysate? . . . . . . . . . . . . . . 7
2.24 What is the conductivity range for dialysate? . . . . . . . . . . . . . . . 7
2.25 What is the purpose of a vascular access in dialysis? . . . . . . . . . . . 7
2.26 What is the “rule of 6s” for fistula maturation? . . . . . . . . . . . . . . 7
2.27 What is the most common complication of a catheter access? . . . . . . . 8
2.28 What is the needle gauge typically used for dialysis? . . . . . . . . . . . 8
2.29 What is the “buttonhole” technique in dialysis? . . . . . . . . . . . . . . 8
2.30 What is the purpose of priming the dialyzer? . . . . . . . . . . . . . . . . 8
2.31 What is the most common dialyzer membrane type? . . . . . . . . . . . 8
2.32 What is the difference between high-flux and low-flux dialyzers? . . . . . 8
2.33 What is the purpose of the venous pressure alarm? . . . . . . . . . . . . 8
2.34 What is an air embolism, and how is it prevented? . . . . . . . . . . . . 8
2.35 What is the normal range for potassium in dialysis patients? . . . . . . . 9
2.36 What is the significance of albumin levels in dialysis patients? . . . . . . 9
2.37 What is the target hemoglobin level for dialysis patients? . . . . . . . . . 9
2.38 What is the purpose of a dialysate culture test? . . . . . . . . . . . . . . 9
2.39 What is a pyrogenic reaction in dialysis? . . . . . . . . . . . . . . . . . . 9
2.40 What is the maximum allowable endotoxin level in dialysate? . . . . . . 9
2.41 What is the purpose of the AAMI standards in dialysis? . . . . . . . . . 9
2.42 What is the role of a carbon tank in water treatment? . . . . . . . . . . 9
2.43 What is the minimum time for disinfecting a dialysis machine? . . . . . . 10
1
, 2.44 What is the purpose of a blood leak detector in dialysis? . . . . . . . . . 10
2.45 What is the normal dialysate temperature? . . . . . . . . . . . . . . . . . 10
2.46 What is the purpose of a conductivity alarm? . . . . . . . . . . . . . . . 10
2.47 What is the first action if a blood leak alarm sounds? . . . . . . . . . . . 10
2.48 What is the purpose of hand cranking during a power outage? . . . . . . 10
2.49 What is the most common cause of anemia in dialysis patients? . . . . . 10
2.50 What is the target phosphorus level in dialysis patients? . . . . . . . . . 10
2.51 What is a phosphate binder, and when is it taken? . . . . . . . . . . . . 11
2.52 What is the purpose of a fistula thrill? . . . . . . . . . . . . . . . . . . . 11
2.53 What is the most common dialysate electrolyte? . . . . . . . . . . . . . . 11
2.54 What is the purpose of a saline flush during dialysis? . . . . . . . . . . . 11
2.55 What is the normal range for calcium in dialysis patients? . . . . . . . . 11
2.56 What is the purpose of a dialyzer reuse program? . . . . . . . . . . . . . 11
2.57 What is the minimum dialyzer clearance rate for urea? . . . . . . . . . . 11
2.58 What is the purpose of a water softener in dialysis? . . . . . . . . . . . . 11
2.59 What is the most common complication of rapid ultrafiltration? . . . . . 12
2.60 What is the purpose of a pre-treatment weight? . . . . . . . . . . . . . . 12
2.61 What is the normal pulse rate for dialysis patients? . . . . . . . . . . . . 12
2.62 What is the purpose of a venous needle in dialysis? . . . . . . . . . . . . 12
2.63 What is the most common cause of high venous pressure? . . . . . . . . 12
2.64 What is the purpose of a dialysate flow meter? . . . . . . . . . . . . . . . 12
2.65 What is the role of a dialysis nurse? . . . . . . . . . . . . . . . . . . . . . 12
2.66 What is the purpose of a post-dialysis weight? . . . . . . . . . . . . . . . 12
2.67 What is the most common dialysate complication? . . . . . . . . . . . . 13
2.68 What is the purpose of a blood pump in dialysis? . . . . . . . . . . . . . 13
2.69 What is the normal range for blood pressure in dialysis patients? . . . . 13
2.70 What is the purpose of a dialyzer flux test? . . . . . . . . . . . . . . . . 13
2.71 What is the most common cause of fever during dialysis? . . . . . . . . . 13
2.72 What is the purpose of a heparin pump? . . . . . . . . . . . . . . . . . . 13
2.73 What is the normal dialysate sodium concentration? . . . . . . . . . . . 13
2.74 What is the purpose of a dialysis treatment log? . . . . . . . . . . . . . . 13
2.75 What is the most common access-related infection? . . . . . . . . . . . . 14
2.76 What is the purpose of a dialysate temperature alarm? . . . . . . . . . . 14
2.77 What is the normal range for hematocrit in dialysis patients? . . . . . . 14
2.78 What is the purpose of a fistula bruit? . . . . . . . . . . . . . . . . . . . 14
2.79 What is the most common cause of low arterial pressure? . . . . . . . . . 14
2.80 What is the purpose of a dialysate pH test? . . . . . . . . . . . . . . . . 14
2.81 What is the most common cause of air detector alarms? . . . . . . . . . 14
2.82 What is the purpose of a dialysate flow alarm? . . . . . . . . . . . . . . . 14
2.83 What is the normal range for urea reduction ratio (URR)? . . . . . . . . 15
2.84 What is the purpose of a dialysis chair scale? . . . . . . . . . . . . . . . 15
2.85 What is the most common cause of muscle cramps during dialysis? . . . 15
2.86 What is the purpose of a dialyzer pressure test? . . . . . . . . . . . . . . 15
2.87 What is the normal range for blood urea nitrogen (BUN) in dialysis patients? 15
2.88 What is the purpose of a dialysis treatment plan? . . . . . . . . . . . . . 15
2.89 What is the most common cause of high TMP? . . . . . . . . . . . . . . 15
2.90 What is the purpose of a water treatment log? . . . . . . . . . . . . . . . 15
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