CCHT Environment Practice Test 2025 Questions Answers

Last Updated on June 14, 2025

CCHT Environment Practice Test 2025 Questions Answers Quiz: Try our free Nephrology Nursing Certification Commission (NNCC) Certified Clinical Hemodialysis Technician (CCHT) Technical Practice Tests. In the actual test, this part consists of 19 to 25 multiple-choice questions, which is approximately 13–17% of the total.

Questions in this area deal with infection control and other safety issues in the dialysis setting. These issues include chemical spills, transferring patients from a wheelchair to a treatment chair, and using correct body mechanics to prevent injury. The Environment section accounts for 15% of the test content. Examples of the kinds of technician activities tested in the Environment area include:

1. Using dialysis/standard precautions.
2. Using chemicals to disinfect environmental surfaces.
3. Following infection control precautions, including isolation, vaccinations, and the use of supplies.
4. Using proper body mechanics.
5. Maintaining an unobstructed emergency exit pathway

CCHT Environment Practice Test

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CCHT Environment Practice Test

1 / 50

1) Before wiping a dialysis station with disinfectant, the technician should first

A) open dialysate lines to air

B) spray disinfectant on the patient

C) remove clean supplies from the area

D) mix bleach and ammonia for extra strength

2 / 50

2) Which practice prevents back injury during patient repositioning?

A) Lifting alone regardless of weight

B) Reaching over bed rails with arms extended

C) Keeping patient close to body and using slide sheet

D) Stopping midway to adjust grip

3 / 50

3) A splash to the eyes with dialysate requires

A) closing eyes tightly and waiting

B) applying antibiotic ointment

C) immediate flush at eyewash station for ≥15 minutes

D) notifying biomedical only

4 / 50

4) When double-bagging infectious waste, the second bag should be held by

A) bare hands for better grip

B) a clean-gloved coworker outside the room

C) the same person holding first bag

D) environmental services only

5 / 50

5) A cart blocking the fire extinguisher violates which safety principle?

A) Standard precautions

B) Unobstructed access to emergency equipment

C) Proper body mechanics

D) Chemical hygiene

6 / 50

6) For wheelchair-to-chair transfer, footrests should be

A) used as leverage points

B) removed or swung aside first

C) taped to floor

D) left in place for speed

7 / 50

7) Before cleaning a blood spill, staff must don

A) no PPE if spill is small

B) shoe covers only

C) surgical cap only

D) gloves and eye/face protection

8 / 50

8) The correct order for removing PPE is typically

A) gown → mask → gloves

B) face shield → mask → gloves → gown

C) gloves → goggles/face shield → gown → mask

D) mask → gown → gloves

9 / 50

9) Gloves should be changed

A) only when torn

B) after lunch break

C) between every patient contact

D) once per hour

10 / 50

10) The minimum contact time for a 1:100 bleach solution on external surfaces is typically

A) 1 minute

B) 5 minutes

C) 30 seconds

D) 15 minutes

11 / 50

11) Which vaccine is STRONGLY encouraged annually for dialysis patients and staff?

A) Cholera

B) Influenza

C) Typhoid

D) Varicella

12 / 50

12) During a fire drill, the FIRST technician action is to

A) finish current saline return

B) silence all machine alarms

C) search for the fire source

D) remove patients from immediate danger

13 / 50

13) Proper disposal for used PPE contaminated with blood is

A) sharps container

B) recycle bin

C) red biohazard bag

D) regular trash

14 / 50

14) The primary reason gowns are changed between patients is to

A) prevent cross-contamination via splashes

B) keep staff warm

C) comply with dress code

D) reduce noise in unit

15 / 50

15) After mopping a bleach spill, the mop head should be

A) stored wet in closet

B) reused without rinsing

C) thrown in regular trash dry

D) rinsed, then placed in designated disinfectant bin

16 / 50

16) Emergency eyewash stations must be checked

A) only after an incident

B) weekly per facility policy

C) monthly if time permits

D) once per year

17 / 50

17) Dialysis stations must have at least how many inches of clear space on each side for safe evacuation?

A) 24 in (61 cm)

B) 12 in (30 cm)

C) 36 in (91 cm)

D) 30 in (76 cm)

18 / 50

18) Vaccination considered MANDATORY for dialysis staff is

A) Yellow fever

B) Hepatitis B series

C) Rabies

D) Smallpox

19 / 50

19) In case of chemical inhalation, the victim should first

A) lie flat in same area

B) take deep breaths of the chemical

C) be moved to fresh air

D) drink water

20 / 50

20) After exposure to blood, the FIRST action is to

A) apply bandage without washing

B) wash area with soap and water

C) remove gloves next shift

D) complete incident report only

21 / 50

21) Routine surface disinfection between patients helps primarily to

A) increase room humidity

B) polish equipment

C) break the chain of infection transmission

D) save on deep-cleaning costs

22 / 50

22) Proper footwear to reduce slip risk in dialysis units is

A) closed-toe, non-skid shoes

B) cloth slippers

C) high-heeled boots

D) open-toe sandals

23 / 50

23) When adjusting an over-bed table height, to avoid strain the technician should

A) yank upward quickly

B) twist torso while pulling

C) reach across patient

D) unlock mechanism before lifting

24 / 50

24) The correct ratio for preparing 1:100 bleach from 5.25 % stock is

A) 50 mL bleach in 50 mL water

B) 1 mL bleach in 10 mL water

C) 10 mL bleach in 990 mL water

D) 5 mL bleach in 500 mL water

25 / 50

25) The safest way to move a full dialysate jug is

A) drag along the floor

B) use a rolling cart rather than carrying by hand

C) hug with one arm

D) carry at shoulder height

26 / 50

26) To reduce repetitive-strain injury while charting, the technician should

A) type with one finger

B) rest forearms on hard desk edges

C) stand hunched over the keyboard

D) keep wrists straight and elbows at 90°

27 / 50

27) Ergonomic stool height should allow the technician’s feet to

A) dangle freely

B) rest flat on floor

C) cross at ankles

D) press on chair ring only

28 / 50

28) The best way to ensure emergency exits remain clear is to

A) keep carts and chairs at least 36 in (91 cm) away

B) store wheelchairs in front of the doors

C) place empty dialysate boxes in the hall temporarily

D) mark exits with yellow tape only

29 / 50

29) After removing torn gloves during a procedure, the technician should

A) continue barehanded

B) perform hand hygiene and don new gloves

C) tape the tear and keep working

D) ask another technician to finish

30 / 50

30) Used dialyzers awaiting reprocessing or disposal must be stored in

A) a linen hamper

B) an open wire basket

C) a dedicated, leak-proof, labeled container

D) regular trash bags

31 / 50

31) Spilled acid concentrate on the floor should be neutralized using

A) extra bleach solution

B) plain water only

C) alcohol spray

D) baking soda solution if facility protocol allows

32 / 50

32) The eyewash station water flow must allow both eyes to be flushed simultaneously for

A) 15 minutes

B) 1 minute

C) 3 minutes

D) 30 seconds

33 / 50

33) Chemical Safety Data Sheets (SDS) must be

A) locked in manager’s office

B) readily accessible to all staff at all times

C) discarded after 30 days

D) sent home with patients

34 / 50

34) A technician strains to reach supplies overhead. To prevent injury, supplies should be stored

A) above head level

B) on the floor

C) between knee and shoulder height

D) behind heavy boxes

35 / 50

35) Which hand-hygiene method must be used when hands are visibly soiled?

A) Antiseptic wipes

B) Soap and water for ≥20 seconds

C) Gloved hands only

D) Alcohol-based rub

36 / 50

36) To prevent trip hazards, electrical cords should be

A) coiled loosely on floor

B) run across aisles

C) hidden under rugs

D) secured and kept out of walkways

37 / 50

37) A patient with known MRSA should be seated

A) beside immune patients

B) at least 6 ft (2 m) from other patients or per facility isolation policy

C) in staff lounge

D) anywhere in the row

38 / 50

38) Food and drink in the treatment area are

A) allowed for staff only

B) prohibited to avoid contamination

C) stored under dialysis machines

D) mandatory for diabetic patients

39 / 50

39) The primary reason to cap and clamp bloodlines during patient transfer is to

A) prevent blood exposure to environment

B) save tubing for reuse

C) lower noise level

D) shorten treatment

40 / 50

40) Which PPE item is REQUIRED during dialyzer reprocessing?

A) Hairnet only

B) Lead apron

C) Shoe covers only

D) Gloves, gown, face shield or mask with goggles

41 / 50

41) The CDC recommends alcohol hand rub contain at least

A) 30 % alcohol

B) 20 % alcohol

C) 60 % alcohol

D) 40 % alcohol

42 / 50

42) An HBsAg-positive patient must be dialyzed

A) on any available machine after wipe-down

B) on a dedicated machine in an isolation area

C) next to another hepatitis B-positive patient only

D) first shift each morning

43 / 50

43) During an earthquake, the technician should instruct patients to

A) stay seated and protect head/neck

B) disconnect themselves

C) pull fire alarm

D) run for the exit

44 / 50

44) A patient spills blood on the floor. The spill is covered with

A) absorbent towels soaked in bleach

B) alcohol swabs only

C) dry paper towels for 30 minutes, then removed

D) coffee filters

45 / 50

45) Post-treatment chair-cleaning must include wiping armrests with

A) vinegar solution

B) EPA-registered disinfectant

C) plain alcohol

D) tap water

46 / 50

46) When lifting a 25 kg dialysate box from the floor, the technician should

A) twist while lifting for leverage

B) keep back straight and lift with legs

C) hold box away from the body

D) bend at the waist

47 / 50

47) Each chemical container must include

A) price stickers

B) handwritten abbreviations only

C) a legible manufacturer label with hazard pictograms

D) patient ID

48 / 50

48) Which disinfectant CANNOT be mixed with bleach due to toxic fumes?

A) Ammonia-based cleaner

B) Isopropyl alcohol

C) Hydrogen peroxide

D) Quaternary ammonium wipes

49 / 50

49) A technician smells chlorine near the water room. First response is to

A) shut down all dialysis machines immediately without assessing

B) notify supervisor and investigate for leaks

C) open all acid jugs

D) ignore; odor is normal

50 / 50

50) Sharps containers should be replaced when they are

A) completely full to the top

B) ¾ full

C) half full

D) emptied each week regardless of level

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