Fresenius Hemodialysis Study Guide
Exam 2025 Complete Verified Questions
and 100% Correct Answers with Detailed
Explanations Comprehensive Review for Certified Clinical
Hemodialysis Technician (CCHT) Exam Preparation Prepared for Aspiring
Dialysis Technicians
July 2025
,Contents
1 Introduction 4
2 Clinical Procedures 4
2.1 Question 1: Pre-Dialysis Assessment Purpose . . . . . . . . . . . . . . . . . . 4
2.2 Question 2: Vital Signs Monitoring . . . . . . . . . . . . . . . . . . . . . . . . 4
2.3 Question 3: Fistula Cannulation . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.4 Question 4: Dialysis Disequilibrium Syndrome . . . . . . . . . . . . . . . . . 4
2.5 Question 5: Managing Hypotension . . . . . . . . . . . . . . . . . . . . . . . 5
2.6 Question 6: Vascular Access Patency . . . . . . . . . . . . . . . . . . . . . . . 5
2.7 Question 7: Post-Dialysis Weight . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.8 Question 8: Catheter Exit Site Care . . . . . . . . . . . . . . . . . . . . . . . . 5
2.9 Question 9: Air Embolism Management . . . . . . . . . . . . . . . . . . . . . 5
2.10 Question 10: Fluid Restriction Education . . . . . . . . . . . . . . . . . . . . . 5
2.11 Question 11: Cramp Management . . . . . . . . . . . . . . . . . . . . . . . . 6
2.12 Question 12: Anemia Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.13 Question 13: Access Infiltration . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.14 Question 14: Post-Dialysis Documentation . . . . . . . . . . . . . . . . . . . . 6
2.15 Question 15: Kt/V Measurement . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.16 Question 16: Emergency Hand Crank . . . . . . . . . . . . . . . . . . . . . . 6
2.17 Question 17: Hyperkalemia Symptoms . . . . . . . . . . . . . . . . . . . . . . 7
2.18 Question 18: Patient Positioning . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.19 Question 19: Dialysate Flow Rate . . . . . . . . . . . . . . . . . . . . . . . . 7
2.20 Question 20: Blood Flow Rate . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.21 Question 21: Pain at Access Site . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.22 Question 22: Urea Reduction Ratio . . . . . . . . . . . . . . . . . . . . . . . . 7
2.23 Question 23: Hemolysis Signs . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.24 Question 24: Dry Weight Assessment . . . . . . . . . . . . . . . . . . . . . . 8
2.25 Question 25: Dialysis Duration . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3 Technical Operations 8
3.1 Question 26: Dialyzer Clotting . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.2 Question 27: Countercurrent Flow . . . . . . . . . . . . . . . . . . . . . . . . 8
3.3 Question 28: Dialysate Temperature . . . . . . . . . . . . . . . . . . . . . . . 8
3.4 Question 29: Blood Leak Alarm . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.5 Question 30: Conductivity Range . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.6 Question 31: Heparin Pump Calibration . . . . . . . . . . . . . . . . . . . . . 9
3.7 Question 32: Ultrafiltration Rate . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.8 Question 33: Air Detector Function . . . . . . . . . . . . . . . . . . . . . . . 9
3.9 Question 34: Dialysate Composition . . . . . . . . . . . . . . . . . . . . . . . 9
3.10 Question 35: Machine Disinfection . . . . . . . . . . . . . . . . . . . . . . . . 10
3.11 Question 36: Venous Pressure Monitoring . . . . . . . . . . . . . . . . . . . . 10
3.12 Question 37: Dialyzer Reuse . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.13 Question 38: Blood Pump Speed . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.14 Question 39: TMP Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.15 Question 40: Dialysate Flow Rate . . . . . . . . . . . . . . . . . . . . . . . . 10
3.16 Question 41: Machine Alarm Tests . . . . . . . . . . . . . . . . . . . . . . . . 10
3.17 Question 42: Dialyzer Priming . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1
, 3.18 Question 43: Sodium Profiling . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.19 Question 44: Dialysate pH . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.20 Question 45: Bloodline Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.21 Question 46: Emergency Power Failure . . . . . . . . . . . . . . . . . . . . . 11
3.22 Question 47: Dialyzer Membrane Types . . . . . . . . . . . . . . . . . . . . . 11
3.23 Question 48: Conductivity Alarm . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.24 Question 49: Heparin Administration . . . . . . . . . . . . . . . . . . . . . . . 12
3.25 Question 50: Machine Calibration . . . . . . . . . . . . . . . . . . . . . . . . 12
4 Infection Control 12
4.1 Question 51: Hand Hygiene Duration . . . . . . . . . . . . . . . . . . . . . . 12
4.2 Question 52: Blood Spill Disinfection . . . . . . . . . . . . . . . . . . . . . . 12
4.3 Question 53: PPE Requirements . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.4 Question 54: Hepatitis B Isolation . . . . . . . . . . . . . . . . . . . . . . . . 13
4.5 Question 55: Aseptic Technique for Catheters . . . . . . . . . . . . . . . . . . 13
4.6 Question 56: Biohazard Waste Disposal . . . . . . . . . . . . . . . . . . . . . 13
4.7 Question 57: Surface Disinfection . . . . . . . . . . . . . . . . . . . . . . . . 13
4.8 Question 58: MRSA Precautions . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.9 Question 59: Catheter Infection Signs . . . . . . . . . . . . . . . . . . . . . . 13
4.10 Question 60: Hand Washing Technique . . . . . . . . . . . . . . . . . . . . . . 13
4.11 Question 61: Glove Changing Frequency . . . . . . . . . . . . . . . . . . . . . 14
4.12 Question 62: Dialyzer Sterilization . . . . . . . . . . . . . . . . . . . . . . . . 14
4.13 Question 63: Hepatitis C Precautions . . . . . . . . . . . . . . . . . . . . . . . 14
4.14 Question 64: PPE Removal Order . . . . . . . . . . . . . . . . . . . . . . . . 14
4.15 Question 65: Infection Reporting . . . . . . . . . . . . . . . . . . . . . . . . . 14
5 Water Treatment 14
5.1 Question 66: Reverse Osmosis Purpose . . . . . . . . . . . . . . . . . . . . . 14
5.2 Question 67: Chlorine Testing Frequency . . . . . . . . . . . . . . . . . . . . 15
5.3 Question 68: Ultrapure Dialysate . . . . . . . . . . . . . . . . . . . . . . . . . 15
5.4 Question 69: Water Softener Function . . . . . . . . . . . . . . . . . . . . . . 15
5.5 Question 70: Endotoxin Testing . . . . . . . . . . . . . . . . . . . . . . . . . 15
5.6 Question 71: Deionizer Role . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
5.7 Question 72: Carbon Filter Function . . . . . . . . . . . . . . . . . . . . . . . 15
5.8 Question 73: Water System Disinfection . . . . . . . . . . . . . . . . . . . . . 16
5.9 Question 74: Conductivity Testing . . . . . . . . . . . . . . . . . . . . . . . . 16
5.10 Question 75: RO Membrane Maintenance . . . . . . . . . . . . . . . . . . . . 16
5.11 Question 76: Total Dissolved Solids . . . . . . . . . . . . . . . . . . . . . . . 16
5.12 Question 77: Chloramine Effects . . . . . . . . . . . . . . . . . . . . . . . . . 16
5.13 Question 78: Water Hardness Testing . . . . . . . . . . . . . . . . . . . . . . . 16
5.14 Question 79: Endotoxin Filter Replacement . . . . . . . . . . . . . . . . . . . 16
5.15 Question 80: Water System Alarms . . . . . . . . . . . . . . . . . . . . . . . . 17
5.16 Question 81: RO Rejection Rate . . . . . . . . . . . . . . . . . . . . . . . . . 17
5.17 Question 82: Bacterial Testing . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5.18 Question 83: Source Water Definition . . . . . . . . . . . . . . . . . . . . . . 17
5.19 Question 84: UV Light in Water Treatment . . . . . . . . . . . . . . . . . . . . 17
5.20 Question 85: Water System Logs . . . . . . . . . . . . . . . . . . . . . . . . . 17
5.21 Question 86: RO System Pressure . . . . . . . . . . . . . . . . . . . . . . . . 17
2
Exam 2025 Complete Verified Questions
and 100% Correct Answers with Detailed
Explanations Comprehensive Review for Certified Clinical
Hemodialysis Technician (CCHT) Exam Preparation Prepared for Aspiring
Dialysis Technicians
July 2025
,Contents
1 Introduction 4
2 Clinical Procedures 4
2.1 Question 1: Pre-Dialysis Assessment Purpose . . . . . . . . . . . . . . . . . . 4
2.2 Question 2: Vital Signs Monitoring . . . . . . . . . . . . . . . . . . . . . . . . 4
2.3 Question 3: Fistula Cannulation . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.4 Question 4: Dialysis Disequilibrium Syndrome . . . . . . . . . . . . . . . . . 4
2.5 Question 5: Managing Hypotension . . . . . . . . . . . . . . . . . . . . . . . 5
2.6 Question 6: Vascular Access Patency . . . . . . . . . . . . . . . . . . . . . . . 5
2.7 Question 7: Post-Dialysis Weight . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.8 Question 8: Catheter Exit Site Care . . . . . . . . . . . . . . . . . . . . . . . . 5
2.9 Question 9: Air Embolism Management . . . . . . . . . . . . . . . . . . . . . 5
2.10 Question 10: Fluid Restriction Education . . . . . . . . . . . . . . . . . . . . . 5
2.11 Question 11: Cramp Management . . . . . . . . . . . . . . . . . . . . . . . . 6
2.12 Question 12: Anemia Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.13 Question 13: Access Infiltration . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.14 Question 14: Post-Dialysis Documentation . . . . . . . . . . . . . . . . . . . . 6
2.15 Question 15: Kt/V Measurement . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.16 Question 16: Emergency Hand Crank . . . . . . . . . . . . . . . . . . . . . . 6
2.17 Question 17: Hyperkalemia Symptoms . . . . . . . . . . . . . . . . . . . . . . 7
2.18 Question 18: Patient Positioning . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.19 Question 19: Dialysate Flow Rate . . . . . . . . . . . . . . . . . . . . . . . . 7
2.20 Question 20: Blood Flow Rate . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.21 Question 21: Pain at Access Site . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.22 Question 22: Urea Reduction Ratio . . . . . . . . . . . . . . . . . . . . . . . . 7
2.23 Question 23: Hemolysis Signs . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.24 Question 24: Dry Weight Assessment . . . . . . . . . . . . . . . . . . . . . . 8
2.25 Question 25: Dialysis Duration . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3 Technical Operations 8
3.1 Question 26: Dialyzer Clotting . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.2 Question 27: Countercurrent Flow . . . . . . . . . . . . . . . . . . . . . . . . 8
3.3 Question 28: Dialysate Temperature . . . . . . . . . . . . . . . . . . . . . . . 8
3.4 Question 29: Blood Leak Alarm . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.5 Question 30: Conductivity Range . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.6 Question 31: Heparin Pump Calibration . . . . . . . . . . . . . . . . . . . . . 9
3.7 Question 32: Ultrafiltration Rate . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.8 Question 33: Air Detector Function . . . . . . . . . . . . . . . . . . . . . . . 9
3.9 Question 34: Dialysate Composition . . . . . . . . . . . . . . . . . . . . . . . 9
3.10 Question 35: Machine Disinfection . . . . . . . . . . . . . . . . . . . . . . . . 10
3.11 Question 36: Venous Pressure Monitoring . . . . . . . . . . . . . . . . . . . . 10
3.12 Question 37: Dialyzer Reuse . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.13 Question 38: Blood Pump Speed . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.14 Question 39: TMP Definition . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.15 Question 40: Dialysate Flow Rate . . . . . . . . . . . . . . . . . . . . . . . . 10
3.16 Question 41: Machine Alarm Tests . . . . . . . . . . . . . . . . . . . . . . . . 10
3.17 Question 42: Dialyzer Priming . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1
, 3.18 Question 43: Sodium Profiling . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.19 Question 44: Dialysate pH . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.20 Question 45: Bloodline Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.21 Question 46: Emergency Power Failure . . . . . . . . . . . . . . . . . . . . . 11
3.22 Question 47: Dialyzer Membrane Types . . . . . . . . . . . . . . . . . . . . . 11
3.23 Question 48: Conductivity Alarm . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.24 Question 49: Heparin Administration . . . . . . . . . . . . . . . . . . . . . . . 12
3.25 Question 50: Machine Calibration . . . . . . . . . . . . . . . . . . . . . . . . 12
4 Infection Control 12
4.1 Question 51: Hand Hygiene Duration . . . . . . . . . . . . . . . . . . . . . . 12
4.2 Question 52: Blood Spill Disinfection . . . . . . . . . . . . . . . . . . . . . . 12
4.3 Question 53: PPE Requirements . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.4 Question 54: Hepatitis B Isolation . . . . . . . . . . . . . . . . . . . . . . . . 13
4.5 Question 55: Aseptic Technique for Catheters . . . . . . . . . . . . . . . . . . 13
4.6 Question 56: Biohazard Waste Disposal . . . . . . . . . . . . . . . . . . . . . 13
4.7 Question 57: Surface Disinfection . . . . . . . . . . . . . . . . . . . . . . . . 13
4.8 Question 58: MRSA Precautions . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.9 Question 59: Catheter Infection Signs . . . . . . . . . . . . . . . . . . . . . . 13
4.10 Question 60: Hand Washing Technique . . . . . . . . . . . . . . . . . . . . . . 13
4.11 Question 61: Glove Changing Frequency . . . . . . . . . . . . . . . . . . . . . 14
4.12 Question 62: Dialyzer Sterilization . . . . . . . . . . . . . . . . . . . . . . . . 14
4.13 Question 63: Hepatitis C Precautions . . . . . . . . . . . . . . . . . . . . . . . 14
4.14 Question 64: PPE Removal Order . . . . . . . . . . . . . . . . . . . . . . . . 14
4.15 Question 65: Infection Reporting . . . . . . . . . . . . . . . . . . . . . . . . . 14
5 Water Treatment 14
5.1 Question 66: Reverse Osmosis Purpose . . . . . . . . . . . . . . . . . . . . . 14
5.2 Question 67: Chlorine Testing Frequency . . . . . . . . . . . . . . . . . . . . 15
5.3 Question 68: Ultrapure Dialysate . . . . . . . . . . . . . . . . . . . . . . . . . 15
5.4 Question 69: Water Softener Function . . . . . . . . . . . . . . . . . . . . . . 15
5.5 Question 70: Endotoxin Testing . . . . . . . . . . . . . . . . . . . . . . . . . 15
5.6 Question 71: Deionizer Role . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
5.7 Question 72: Carbon Filter Function . . . . . . . . . . . . . . . . . . . . . . . 15
5.8 Question 73: Water System Disinfection . . . . . . . . . . . . . . . . . . . . . 16
5.9 Question 74: Conductivity Testing . . . . . . . . . . . . . . . . . . . . . . . . 16
5.10 Question 75: RO Membrane Maintenance . . . . . . . . . . . . . . . . . . . . 16
5.11 Question 76: Total Dissolved Solids . . . . . . . . . . . . . . . . . . . . . . . 16
5.12 Question 77: Chloramine Effects . . . . . . . . . . . . . . . . . . . . . . . . . 16
5.13 Question 78: Water Hardness Testing . . . . . . . . . . . . . . . . . . . . . . . 16
5.14 Question 79: Endotoxin Filter Replacement . . . . . . . . . . . . . . . . . . . 16
5.15 Question 80: Water System Alarms . . . . . . . . . . . . . . . . . . . . . . . . 17
5.16 Question 81: RO Rejection Rate . . . . . . . . . . . . . . . . . . . . . . . . . 17
5.17 Question 82: Bacterial Testing . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5.18 Question 83: Source Water Definition . . . . . . . . . . . . . . . . . . . . . . 17
5.19 Question 84: UV Light in Water Treatment . . . . . . . . . . . . . . . . . . . . 17
5.20 Question 85: Water System Logs . . . . . . . . . . . . . . . . . . . . . . . . . 17
5.21 Question 86: RO System Pressure . . . . . . . . . . . . . . . . . . . . . . . . 17
2
