CVA Facility Sanitation and Safety 2 — Questions and Answers
Question 1: Which disinfectant is effective against parvovirus on kennel surfaces?
- Quaternary ammonium compounds
- Dilute sodium hypochlorite (bleach) at 1:32 ratio (Correct answer)
- Isopropyl alcohol (70%)
- Hydrogen peroxide at 1% concentration
Correct answer: Dilute sodium hypochlorite (bleach) at 1:32 ratio
Parvovirus is a non-enveloped virus resistant to most disinfectants. Bleach at 1:32 dilution with 10-minute contact time is one of the few proven effective options.
Canine parvovirus survives on surfaces for months. Quaternary ammonium compounds do not reliably kill it. Alcohol is ineffective against non-enveloped viruses. Low-concentration hydrogen peroxide is insufficient. Bleach at 1:32 dilution (approximately 1,700 ppm) is the standard recommendation.
Question 2: What is the correct order for cleaning and disinfecting a surgical suite between procedures?
- Disinfect, then remove organic matter, then rinse
- Remove organic matter, clean with detergent, rinse, apply disinfectant (Correct answer)
- Apply disinfectant, clean with detergent, air dry
- Sweep the floor and wipe with alcohol
Correct answer: Remove organic matter, clean with detergent, rinse, apply disinfectant
Organic matter must be removed first because it inactivates most disinfectants. The sequence is: remove debris, detergent clean, rinse, then disinfect.
The protocol follows strict sequence: remove visible organic matter, clean with detergent to dissolve remaining material, rinse to remove detergent residue, then apply disinfectant at correct dilution and allow required contact time.
Question 3: According to OSHA standards, what must be on the label of a secondary container holding a hazardous chemical?
- Only the chemical name
- Chemical name and transfer date
- Product identifier and applicable hazard warnings (Correct answer)
- Name of the employee who transferred it
Correct answer: Product identifier and applicable hazard warnings
OSHA requires secondary containers to display the product identifier and hazard warnings so any employee can identify contents and risks.
Under OSHA's Hazard Communication Standard, secondary containers must bear the product identifier matching the SDS and words, pictures, or symbols providing general hazard information.
Question 4: Which type of waste requires placement in a red biohazard bag?
- Used paper towels from routine cleaning
- Blood-soaked surgical sponges and drapes (Correct answer)
- Empty food cans and packaging
- Clean but expired medications
Correct answer: Blood-soaked surgical sponges and drapes
Blood-soaked materials are regulated medical waste requiring red biohazard bags to prevent pathogen transmission.
Red biohazard bags are for regulated medical waste including items saturated with blood, pathological waste, and microbiological waste. Expired medications may need pharmaceutical waste disposal but not biohazard bags.
Question 5: What is the minimum recommended air exchange rate per hour for a veterinary isolation ward?
- 2-4 exchanges per hour
- 6-8 exchanges per hour
- 10-15 exchanges per hour (Correct answer)
- 20-25 exchanges per hour
Correct answer: 10-15 exchanges per hour
Isolation areas require 10-15 air changes per hour with 100% exhaust to outside to prevent airborne pathogen spread.
The standard is 10-15 air changes per hour with negative pressure relative to surrounding areas and 100% exhaust to outside. General treatment areas typically require 6-8 exchanges.
Question 6: What is the proper response if splashed in the eye with a chemical disinfectant?
- Wipe the eye with a dry cloth
- Flush the eye with clean water for at least 15 minutes and report the incident (Correct answer)
- Apply antibiotic eye ointment immediately
- Close the eye tightly and wait
Correct answer: Flush the eye with clean water for at least 15 minutes and report the incident
Chemical eye splashes require immediate irrigation with clean water for at least 15 minutes, followed by reporting and medical evaluation.
Standard first aid: flush the affected eye with clean, lukewarm water for minimum 15 minutes with eyelids held open. Remove contact lenses if present. Report the incident and consult the SDS for additional guidance.
CVA Facility Sanitation and Safety 2
Which disinfectant is effective against parvovirus on kennel surfaces?