Clinical Skills & Safety Q&A
:Questions And Answer With
Rationales /Graded A+ Update
100% Correct
Comprehensive Topic Test for Student School
Examination
SECTION 1: INFECTION CONTROL & STANDARD
PRECAUTIONS (Questions 1-12)
1. Which of the following is the MOST critical step in preventing healthcare-
associated infections (HAIs) during phlebotomy?
• A. Wearing double gloves
• B. Performing proper hand hygiene before and after each patient
contact ✅
• C. Using alcohol-based hand rub exclusively
• D. Changing lab coats daily
Rationale: Hand hygiene is the single most effective measure for preventing HAIs.
CDC guidelines mandate hand washing with soap and water or alcohol-based rub
before and after every patient contact, even when gloves are worn.
2. After accidental exposure to blood via needlestick, the FIRST action should
be:
, • A. Report to supervisor within 24 hours
• B. Wash the site with soap and running water ✅
• C. Squeeze the wound to express blood
• D. Apply pressure and bandage
Rationale: Immediate washing with soap and water (15-20 minutes for mucous
membranes) is the priority to flush out pathogens. Report must follow but immediate
decontamination reduces transmission risk by up to 80%.
3. Which CDC isolation precaution category is appropriate for a patient with
active pulmonary tuberculosis?
• A. Contact Precautions
• B. Droplet Precautions
• C. Airborne Precautions ✅
• D. Standard Precautions only
Rationale: Airborne Precautions require N95 respirator and negative pressure room
because TB particles remain suspended in air for extended periods. Droplet
precautions apply to influenza or meningococcal disease.
4. What is the maximum recommended time a tourniquet should remain on a
patient's arm?
• A. 1 minute ✅
• B. 2 minutes
• C. 3 minutes
• D. 5 minutes
Rationale: Tourniquet application beyond 1 minute causes hemoconcentration,
altered test results (potassium, LDH, platelets), and potential nerve damage. Release
before 1-minute mark whenever possible.
5. Which disinfectant is appropriate for cleaning a blood spill on a countertop?
• A. 50% isopropyl alcohol
• B. 1:10 dilution of household bleach (sodium hypochlorite) ✅
• C. Quaternary ammonium compound only
• D. Hydrogen peroxide 3%
Rationale: EPA-recommended 1:10 bleach solution (0.5% sodium hypochlorite) is
tuberculocidal and kills HBV/HIV within minutes. Contact time should be at least 10
minutes for bloodborne pathogens.
6. A phlebotomist notices a tear in their glove during a venipuncture. The skin
underneath appears intact. The CORRECT action is:
, • A. Continue the draw since skin is intact
• B. Remove gloves, perform hand hygiene, and apply new gloves ✅
• C. Place tape over the tear and continue
• D. Finish the draw and report after
Rationale: Any glove breach compromises barrier protection. Standard precautions
require immediate regloving even without visible skin injury because microabrasions
can serve as entry points.
7. Which of the following requires BOTH Standard and Contact Precautions?
• A. Pneumonia
• B. Clostridioides difficile infection ✅
• C. Chickenpox
• D. Seasonal influenza
Rationale: C. diff requires Contact Precautions (gown, gloves, dedicated equipment)
plus Standard Precautions due to spore formation and environmental contamination.
Alcohol-based hand rub ineffective; soap and water required.
8. The OSHA Bloodborne Pathogens Standard requires that sharps containers
be:
• A. Reusable after autoclaving
• B. Puncture-resistant, leak-proof, and labeled with biohazard symbol ✅
• C. Located within 10 feet of every patient bed
• D. Emptied when 75% full
Rationale: OSHA 29 CFR 1910.1030 mandates puncture-resistant, leak-proof
containers with biohazard labeling. Containers must be closed when 3/4 full,
replaced before overflow, and never manually emptied.
9. What is the proper sequence for donning PPE before entering an isolation
room?
• A. Gloves → Gown → Mask → Eye shield
• B. Gown → Mask → Eye shield → Gloves ✅
• C. Mask → Gloves → Gown → Eye shield
• D. Eye shield → Mask → Gown → Gloves
Rationale: Proper donning order: gown first (covers clothing), then mask/respirator,
eye protection, gloves last (cover gown cuffs). This sequence minimizes
contamination risk during application.
10. A phlebotomist accidentally recaps a used needle using the two-handed
scoop method. This is: