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) Proper disposal for used PPE contaminated with blood is

A) red biohazard bag

B) regular trash

C) sharps container

D) recycle bin

2 / 50

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

A) 1 minute

B) 30 seconds

C) 5 minutes

D) 15 minutes

3 / 50

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

A) Soap and water for ≥20 seconds

B) Alcohol-based rub

C) Antiseptic wipes

D) Gloved hands only

4 / 50

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

A) vinegar solution

B) tap water

C) plain alcohol

D) EPA-registered disinfectant

5 / 50

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

A) coffee filters

B) absorbent towels soaked in bleach

C) dry paper towels for 30 minutes, then removed

D) alcohol swabs only

6 / 50

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

A) wash area with soap and water

B) remove gloves next shift

C) complete incident report only

D) apply bandage without washing

7 / 50

7) Each chemical container must include

A) handwritten abbreviations only

B) patient ID

C) a legible manufacturer label with hazard pictograms

D) price stickers

8 / 50

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

A) notify supervisor and investigate for leaks

B) shut down all dialysis machines immediately without assessing

C) ignore; odor is normal

D) open all acid jugs

9 / 50

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

A) a dedicated, leak-proof, labeled container

B) an open wire basket

C) regular trash bags

D) a linen hamper

10 / 50

10) Before cleaning a blood spill, staff must don

A) shoe covers only

B) no PPE if spill is small

C) surgical cap only

D) gloves and eye/face protection

11 / 50

11) An HBsAg-positive patient must be dialyzed

A) next to another hepatitis B-positive patient only

B) on any available machine after wipe-down

C) first shift each morning

D) on a dedicated machine in an isolation area

12 / 50

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

A) Isopropyl alcohol

B) Quaternary ammonium wipes

C) Ammonia-based cleaner

D) Hydrogen peroxide

13 / 50

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

A) Typhoid

B) Varicella

C) Cholera

D) Influenza

14 / 50

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

A) left in place for speed

B) taped to floor

C) removed or swung aside first

D) used as leverage points

15 / 50

15) Vaccination considered MANDATORY for dialysis staff is

A) Rabies

B) Yellow fever

C) Hepatitis B series

D) Smallpox

16 / 50

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

A) reach across patient

B) twist torso while pulling

C) unlock mechanism before lifting

D) yank upward quickly

17 / 50

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

A) 30 seconds

B) 1 minute

C) 15 minutes

D) 3 minutes

18 / 50

18) Which practice prevents back injury during patient repositioning?

A) Lifting alone regardless of weight

B) Reaching over bed rails with arms extended

C) Stopping midway to adjust grip

D) Keeping patient close to body and using slide sheet

19 / 50

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

A) hug with one arm

B) carry at shoulder height

C) use a rolling cart rather than carrying by hand

D) drag along the floor

20 / 50

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

A) cloth slippers

B) closed-toe, non-skid shoes

C) high-heeled boots

D) open-toe sandals

21 / 50

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

A) Unobstructed access to emergency equipment

B) Proper body mechanics

C) Standard precautions

D) Chemical hygiene

22 / 50

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

A) hold box away from the body

B) keep back straight and lift with legs

C) bend at the waist

D) twist while lifting for leverage

23 / 50

23) 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

24 / 50

24) The correct order for removing PPE is typically

A) face shield → mask → gloves → gown

B) gown → mask → gloves

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

D) mask → gown → gloves

25 / 50

25) To prevent trip hazards, electrical cords should be

A) run across aisles

B) secured and kept out of walkways

C) coiled loosely on floor

D) hidden under rugs

26 / 50

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

A) dangle freely

B) press on chair ring only

C) cross at ankles

D) rest flat on floor

27 / 50

27) Routine surface disinfection between patients helps primarily to

A) increase room humidity

B) save on deep-cleaning costs

C) polish equipment

D) break the chain of infection transmission

28 / 50

28) The CDC recommends alcohol hand rub contain at least

A) 60 % alcohol

B) 40 % alcohol

C) 30 % alcohol

D) 20 % alcohol

29 / 50

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

A) comply with dress code

B) reduce noise in unit

C) keep staff warm

D) prevent cross-contamination via splashes

30 / 50

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

A) thrown in regular trash dry

B) stored wet in closet

C) rinsed, then placed in designated disinfectant bin

D) reused without rinsing

31 / 50

31) Sharps containers should be replaced when they are

A) half full

B) ¾ full

C) completely full to the top

D) emptied each week regardless of level

32 / 50

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

A) bare hands for better grip

B) environmental services only

C) the same person holding first bag

D) a clean-gloved coworker outside the room

33 / 50

33) A patient with known MRSA should be seated

A) anywhere in the row

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

C) beside immune patients

D) in staff lounge

34 / 50

34) Chemical Safety Data Sheets (SDS) must be

A) readily accessible to all staff at all times

B) sent home with patients

C) discarded after 30 days

D) locked in manager’s office

35 / 50

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

A) search for the fire source

B) silence all machine alarms

C) remove patients from immediate danger

D) finish current saline return

36 / 50

36) A splash to the eyes with dialysate requires

A) applying antibiotic ointment

B) notifying biomedical only

C) closing eyes tightly and waiting

D) immediate flush at eyewash station for ≥15 minutes

37 / 50

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

A) plain water only

B) extra bleach solution

C) baking soda solution if facility protocol allows

D) alcohol spray

38 / 50

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

A) save tubing for reuse

B) lower noise level

C) shorten treatment

D) prevent blood exposure to environment

39 / 50

39) Food and drink in the treatment area are

A) prohibited to avoid contamination

B) allowed for staff only

C) mandatory for diabetic patients

D) stored under dialysis machines

40 / 50

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

A) spray disinfectant on the patient

B) open dialysate lines to air

C) mix bleach and ammonia for extra strength

D) remove clean supplies from the area

41 / 50

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

A) above head level

B) behind heavy boxes

C) on the floor

D) between knee and shoulder height

42 / 50

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

A) stand hunched over the keyboard

B) type with one finger

C) rest forearms on hard desk edges

D) keep wrists straight and elbows at 90°

43 / 50

43) Gloves should be changed

A) only when torn

B) after lunch break

C) once per hour

D) between every patient contact

44 / 50

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

A) perform hand hygiene and don new gloves

B) ask another technician to finish

C) continue barehanded

D) tape the tear and keep working

45 / 50

45) Emergency eyewash stations must be checked

A) monthly if time permits

B) weekly per facility policy

C) only after an incident

D) once per year

46 / 50

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

A) disconnect themselves

B) stay seated and protect head/neck

C) pull fire alarm

D) run for the exit

47 / 50

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

A) take deep breaths of the chemical

B) be moved to fresh air

C) lie flat in same area

D) drink water

48 / 50

48) 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) mark exits with yellow tape only

D) place empty dialysate boxes in the hall temporarily

49 / 50

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

A) 36 in (91 cm)

B) 30 in (76 cm)

C) 12 in (30 cm)

D) 24 in (61 cm)

50 / 50

50) Which PPE item is REQUIRED during dialyzer reprocessing?

A) Lead apron

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

C) Shoe covers only

D) Hairnet only

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