CNT CLEAN NEEDLE TECHNIQUE
EXAM 3 QUESTIONS AND VERIFIED
SOLUTIONS LATEST UPDATE THIS
YEAR
1. What is the recommended duration for washing hands with soap and water according to
current CDC and CNT guidelines?
A. At least 15 to 20 seconds
B. At least 5 seconds
C. At least 60 seconds
D. Exactly 30 seconds
Answer: A
Conceptual Explanation: CDC and CNT guidelines state that hands should be washed for
at least 15 to 20 seconds with soap and water to effectively remove transient flora.
2. According to OSHA, which of the following is true regarding the Hepatitis B vaccination for
employees at risk of exposure?
A. The employee must pay for the vaccine
B. The vaccine should only be offered after an exposure incident
C. Vaccination is optional and not required to be offered
,D. The employer must provide the vaccine at no cost
Answer: D
Conceptual Explanation: The OSHA Bloodborne Pathogens Standard requires employers
to offer the Hepatitis B vaccine series to all employees who have occupational exposure at
no cost to the employee.
3. How long can the Hepatitis B Virus (HBV) survive on environmental surfaces in a dried
state?
A. At least 7 days
B. Up to 24 hours
C. Only a few minutes
D. Up to 30 days
Answer: A
Conceptual Explanation: HBV is a very resilient virus and has been shown to survive on
environmental surfaces for at least 7 days, even in a dried state.
4. What is the appropriate ratio of bleach to water for cleaning a large blood spill on a non-
porous surface?
A. 1:100
B. 1:50
C. 1:1
, D. 1:10
Answer: D
Conceptual Explanation: For cleaning large blood spills, a 1:10 dilution of 5.25% sodium
hypochlorite (bleach) to water is recommended to ensure high-level disinfection.
5. At what point must a sharps container be sealed and replaced?
A. When it is completely full to the top
B. Every 30 days regardless of fullness
C. When it reaches the 3/4 fill line
D. When it reaches the 1/2 fill line
Answer: C
Conceptual Explanation: Sharps containers should be closed and replaced when they are
3/4 full to prevent injuries from protruding needles.
6. Which of the following is the first step to take after a needlestick injury occurs?
A. Report the incident to a supervisor
B. Wash the area thoroughly with soap and water
C. Apply an antiseptic such as iodine
D. Squeeze the wound to induce bleeding
Answer: B
EXAM 3 QUESTIONS AND VERIFIED
SOLUTIONS LATEST UPDATE THIS
YEAR
1. What is the recommended duration for washing hands with soap and water according to
current CDC and CNT guidelines?
A. At least 15 to 20 seconds
B. At least 5 seconds
C. At least 60 seconds
D. Exactly 30 seconds
Answer: A
Conceptual Explanation: CDC and CNT guidelines state that hands should be washed for
at least 15 to 20 seconds with soap and water to effectively remove transient flora.
2. According to OSHA, which of the following is true regarding the Hepatitis B vaccination for
employees at risk of exposure?
A. The employee must pay for the vaccine
B. The vaccine should only be offered after an exposure incident
C. Vaccination is optional and not required to be offered
,D. The employer must provide the vaccine at no cost
Answer: D
Conceptual Explanation: The OSHA Bloodborne Pathogens Standard requires employers
to offer the Hepatitis B vaccine series to all employees who have occupational exposure at
no cost to the employee.
3. How long can the Hepatitis B Virus (HBV) survive on environmental surfaces in a dried
state?
A. At least 7 days
B. Up to 24 hours
C. Only a few minutes
D. Up to 30 days
Answer: A
Conceptual Explanation: HBV is a very resilient virus and has been shown to survive on
environmental surfaces for at least 7 days, even in a dried state.
4. What is the appropriate ratio of bleach to water for cleaning a large blood spill on a non-
porous surface?
A. 1:100
B. 1:50
C. 1:1
, D. 1:10
Answer: D
Conceptual Explanation: For cleaning large blood spills, a 1:10 dilution of 5.25% sodium
hypochlorite (bleach) to water is recommended to ensure high-level disinfection.
5. At what point must a sharps container be sealed and replaced?
A. When it is completely full to the top
B. Every 30 days regardless of fullness
C. When it reaches the 3/4 fill line
D. When it reaches the 1/2 fill line
Answer: C
Conceptual Explanation: Sharps containers should be closed and replaced when they are
3/4 full to prevent injuries from protruding needles.
6. Which of the following is the first step to take after a needlestick injury occurs?
A. Report the incident to a supervisor
B. Wash the area thoroughly with soap and water
C. Apply an antiseptic such as iodine
D. Squeeze the wound to induce bleeding
Answer: B
