DAVITA CERTIFICATION EXAMS: FINAL VERSION
COMPLETE QUESTIONS AND ANSWERS | STAR
LEARNING | PCT FINAL | CCHT PREP
LATEST 2025/2026 UPDATE | 100% VERIFIED | GRADED
A+
TABLE OF CONTENTS
1. DOCUMENT INFORMATION................................... PAGE 1
2. SECTION 1: DAVITA STAR LEARNING EXAM.................. PAGE 2
3. SECTION 2: PCT FINAL EXAM............................. PAGE 6
4. SECTION 3: CCHT PRACTICE EXAM......................... PAGE 11
5. QUICK REFERENCE ANSWER KEY............................ PAGE 17
DOCUMENT INFORMATION
Institution: DaVita Inc. (DaVita Kidney Care)
Course: STAR Learning, PCT Final Exam, CCHT Certification
Document Type: Complete Test Bank – Questions & Answers with Rationales
Latest Update: 2025/2026
Total Pages: 20
Grade: A+ Verified
This document contains the "Final Version" of DaVita test questions and answers, compiled
from multiple verified sources. It is designed as a complete study guide for dialysis technicians
preparing for DaVita certification exams, annual competencies, and the CCHT certification .
SECTION 1: DAVITA STAR LEARNING EXAM
Question 1.1
The primary electrolyte in both our blood and the dialysate is:
Answer: Sodium
,Rationale: Sodium is the primary electrolyte in blood and dialysate, playing a crucial role in fluid
balance, nerve transmission, and muscle function. Dialysate sodium concentration is carefully
controlled to match patient needs .
Question 1.2
Policy states the conductivity meter should be calibrated when an inaccurate reading is
suspected. It should also be calibrated:
Answer: Prior to daily use
Rationale: Conductivity meters must be calibrated before daily use to ensure accurate
monitoring of dialysate composition. This is a critical safety step to prevent patient exposure to
improperly mixed dialysate .
Question 1.3
When the dialysate sodium level is higher than the level in the blood:
Answer: Diffusion will cause sodium to move into the blood
Rationale: Diffusion is the movement of solutes from an area of higher concentration to lower
concentration. When dialysate sodium exceeds blood sodium, sodium diffuses into the blood to
achieve equilibrium .
Question 1.4
The calibration of the conductivity meter should be completed at least:
Answer: Daily
Rationale: Conductivity meter calibration must be performed at least daily to ensure ongoing
accuracy and patient safety throughout the treatment day .
Question 1.5
Hypernatremia can lead to:
Answer: Excessive thirst and decreased weight gains between treatments
Rationale: High sodium levels (hypernatremia) stimulate thirst as the body attempts to dilute the
blood. Patients may drink more, but this can paradoxically lead to decreased interdialytic weight
gains if they restrict fluid due to education .
, Question 1.6
Comparing the displayed machine conductivity and your manual conductivity reading with the
Fresenius machine's TCD reading helps to:
Answer: Assure the machine reading is accurate, identify malfunctions of the machine's
proportioning system, and identify malfunctions of the machine's alarm/bypass system
Rationale: Manual verification of machine readings is a triple-check safety measure: it confirms
accuracy, detects proportioning problems, and validates alarm systems .
Question 1.7
When comparing a manual conductivity reading to the applicable machine conductivity reading,
the difference in readings should be no greater than:
Answer: 0.4 mS/cm
Rationale: A variance greater than 0.4 mS/cm indicates a potential malfunction that requires
investigation before the machine can be used for patient treatment .
Question 1.8
If, after recalibrating the conductivity meter and retesting the machine, the difference between
the manual and applicable machine conductivity remains greater than 0.4 mS/cm, one should:
Answer: Remove the machine, tag the machine, and notify biomed
Rationale: Machines failing calibration verification must be removed from service immediately to
prevent patient harm. Biomed must evaluate and repair before the machine can be used again .
Question 1.9
True/false: A manual conductivity reading should not be completed when the machine is in
bypass mode.
Answer: True
Rationale: Bypass mode diverts dialysate away from the dialyzer. Conductivity readings during
bypass may not reflect the actual dialysate composition that would reach the patient during
treatment .
Question 1.10
COMPLETE QUESTIONS AND ANSWERS | STAR
LEARNING | PCT FINAL | CCHT PREP
LATEST 2025/2026 UPDATE | 100% VERIFIED | GRADED
A+
TABLE OF CONTENTS
1. DOCUMENT INFORMATION................................... PAGE 1
2. SECTION 1: DAVITA STAR LEARNING EXAM.................. PAGE 2
3. SECTION 2: PCT FINAL EXAM............................. PAGE 6
4. SECTION 3: CCHT PRACTICE EXAM......................... PAGE 11
5. QUICK REFERENCE ANSWER KEY............................ PAGE 17
DOCUMENT INFORMATION
Institution: DaVita Inc. (DaVita Kidney Care)
Course: STAR Learning, PCT Final Exam, CCHT Certification
Document Type: Complete Test Bank – Questions & Answers with Rationales
Latest Update: 2025/2026
Total Pages: 20
Grade: A+ Verified
This document contains the "Final Version" of DaVita test questions and answers, compiled
from multiple verified sources. It is designed as a complete study guide for dialysis technicians
preparing for DaVita certification exams, annual competencies, and the CCHT certification .
SECTION 1: DAVITA STAR LEARNING EXAM
Question 1.1
The primary electrolyte in both our blood and the dialysate is:
Answer: Sodium
,Rationale: Sodium is the primary electrolyte in blood and dialysate, playing a crucial role in fluid
balance, nerve transmission, and muscle function. Dialysate sodium concentration is carefully
controlled to match patient needs .
Question 1.2
Policy states the conductivity meter should be calibrated when an inaccurate reading is
suspected. It should also be calibrated:
Answer: Prior to daily use
Rationale: Conductivity meters must be calibrated before daily use to ensure accurate
monitoring of dialysate composition. This is a critical safety step to prevent patient exposure to
improperly mixed dialysate .
Question 1.3
When the dialysate sodium level is higher than the level in the blood:
Answer: Diffusion will cause sodium to move into the blood
Rationale: Diffusion is the movement of solutes from an area of higher concentration to lower
concentration. When dialysate sodium exceeds blood sodium, sodium diffuses into the blood to
achieve equilibrium .
Question 1.4
The calibration of the conductivity meter should be completed at least:
Answer: Daily
Rationale: Conductivity meter calibration must be performed at least daily to ensure ongoing
accuracy and patient safety throughout the treatment day .
Question 1.5
Hypernatremia can lead to:
Answer: Excessive thirst and decreased weight gains between treatments
Rationale: High sodium levels (hypernatremia) stimulate thirst as the body attempts to dilute the
blood. Patients may drink more, but this can paradoxically lead to decreased interdialytic weight
gains if they restrict fluid due to education .
, Question 1.6
Comparing the displayed machine conductivity and your manual conductivity reading with the
Fresenius machine's TCD reading helps to:
Answer: Assure the machine reading is accurate, identify malfunctions of the machine's
proportioning system, and identify malfunctions of the machine's alarm/bypass system
Rationale: Manual verification of machine readings is a triple-check safety measure: it confirms
accuracy, detects proportioning problems, and validates alarm systems .
Question 1.7
When comparing a manual conductivity reading to the applicable machine conductivity reading,
the difference in readings should be no greater than:
Answer: 0.4 mS/cm
Rationale: A variance greater than 0.4 mS/cm indicates a potential malfunction that requires
investigation before the machine can be used for patient treatment .
Question 1.8
If, after recalibrating the conductivity meter and retesting the machine, the difference between
the manual and applicable machine conductivity remains greater than 0.4 mS/cm, one should:
Answer: Remove the machine, tag the machine, and notify biomed
Rationale: Machines failing calibration verification must be removed from service immediately to
prevent patient harm. Biomed must evaluate and repair before the machine can be used again .
Question 1.9
True/false: A manual conductivity reading should not be completed when the machine is in
bypass mode.
Answer: True
Rationale: Bypass mode diverts dialysate away from the dialyzer. Conductivity readings during
bypass may not reflect the actual dialysate composition that would reach the patient during
treatment .
Question 1.10
