Free CSMLS Laboratory Management, Safety, and Quality Questions and Answers — Questions and Answers
Question 1: What is the proper order for the removal of personal protective equipment?
- Gloves, mask, eye protection, gown
- Gown, gloves, eye protection, mask
- Gown, mask, gloves, eye protection
- Gloves, gown, eye protection, mask (Correct answer)
Correct answer: Gloves, gown, eye protection, mask
Explanation: <br>
The proper order for the removal of personal protective equipment (PPE) is crucial to minimize the risk of contamination and ensure safety. Starting with removing gloves first, followed by the gown, eye protection, and finally the mask, helps prevent potential exposure to hazardous materials and pathogens.
Question 2: What is the most important step in preventing infection?
- Wearing gloves
- Hand washing (Correct answer)
- Wearing N95 mask
- Disinfecting surfaces
Correct answer: Hand washing
Explanation: <br>
Hand washing is the most important step in preventing infection transmission in healthcare settings. Proper hand hygiene reduces the spread of pathogens from surfaces to patients or healthcare workers, significantly decreasing the risk of infections.
Question 3: Which of the following disinfectants must not be placed in an autoclave due to the generation of unsafe gases?
- Sodium hypochlorite (Correct answer)
- Hydrogen peroxide
- Sodium phosphate
- 70% alcohol
Correct answer: Sodium hypochlorite
Explanation: <br>
Sodium hypochlorite, commonly known as bleach, should not be placed in an autoclave due to the potential generation of unsafe gases such as chlorine gas. Autoclaving sodium hypochlorite can result in hazardous chemical reactions and pose risks to laboratory staff and equipment. Therefore, it is essential to follow proper disinfection protocols and avoid autoclaving sodium hypochlorite.
Question 4: Which of the following quality system essentials includes processes for selecting and installing laboratory instruments?
- Continual improvement
- Process management
- Equipment (Correct answer)
- Assessments
Correct answer: Equipment
Explanation: <br>
The quality system essential "equipment" involves processes for selecting, installing, and maintaining laboratory instruments to ensure their proper functioning and accuracy. This includes validation, calibration, and regular maintenance procedures to uphold quality standards in laboratory testing.
Question 5: What type of extinguisher is used for metal fires?
- A-B-C dry chemical
- Class D dry chemical (Correct answer)
- Water
- Carbon dioxide
Correct answer: Class D dry chemical
Explanation: <br>
Class D dry chemical extinguishers are specifically designed for metal fires, such as fires involving combustible metals like magnesium, sodium, titanium, or potassium. These extinguishers contain a dry powder agent that effectively smothers and cools the fire, preventing re-ignition and minimizing the risk of explosions.
Question 6: Which of the following actions may be taken to gather evidence when a new polymerase chain reaction methodology is being investigated for clinical use?
- Rely on personal knowledge
- Ask co-workers for their opinions
- Incorporate into staff performance reviews
- Perform a literature review (Correct answer)
Correct answer: Perform a literature review
Explanation: <br>
When investigating a new polymerase chain reaction (PCR) methodology for clinical use, performing a literature review is essential. This involves gathering evidence from peer-reviewed scientific literature to assess the methodology's validity, reliability, and clinical utility. A literature review helps inform decision-making, ensuring that evidence-based practices are followed in the laboratory.
Question 7: Which of the following actions minimizes injury due to excessive pipetting?
- Keeping all the samples at arm’s length reach
- Adjusting the workstation so that arms are elevated
- Using a positive displacement technique
- Rotating pipetting task with other duties (Correct answer)
Correct answer: Rotating pipetting task with other duties
Explanation: <br>
Rotating pipetting tasks with other duties helps minimize injury due to excessive pipetting by reducing prolonged repetitive motions. Alternating between tasks allows for periods of rest and recovery for the hands and fingers, decreasing the risk of repetitive strain injuries.
Question 8: What is the systematic approach to reviewing a task or job to identify hazards?
- Hazard control
- Risk assessment (Correct answer)
- Internal audit
- Administrative control
Correct answer: Risk assessment
Explanation: <br>
Risk assessment is the systematic approach to reviewing a task or job to identify hazards. It involves evaluating the likelihood and severity of potential hazards and implementing measures to mitigate risks. By conducting risk assessments, laboratories can proactively identify and address potential safety concerns, promoting a safe working environment for staff and patients.
Question 9: Which of the following pieces of equipment provides protection from aerosols while aliquoting specimens?
- Fume Hood
- Canopy Hood
- Biological Safety Cabinet (Correct answer)
- Splash Screen
Correct answer: Biological Safety Cabinet
Explanation: <br>
A Biological Safety Cabinet (BSC) provides protection from aerosols while aliquoting specimens. BSCs are designed to provide a sterile environment and protect laboratory personnel, the environment, and the sample being handled from potential contamination by aerosols or hazardous particles.
Question 10: Which of the following procedures should be used when disposing of a used microtome knife blade?
- Use forceps to handle the blade and place it in sharps (Correct answer)
- Grasp the blade in the centre with your fingers and place it in sharps
- Have a designated person to collect all blades
- Wear gloves to handle the blade and place in a biohazard bag
Correct answer: Use forceps to handle the blade and place it in sharps
Explanation: <br>
Proper handling and disposal of used microtome knife blades are essential to prevent injuries and ensure safety in the laboratory. Using forceps to handle the blade minimizes the risk of accidental cuts or punctures. Placing the used blade in a sharps container ensures safe disposal and compliance with biohazards waste management protocols.
Question 11: Which of the following actions should be completed when blood culture specimens are being improperly collected?
- Evaluate collection method (Correct answer)
- Perform employee evaluations
- Implement a solution
- Reprimand employees
Correct answer: Evaluate collection method
Explanation: <br>
When blood culture specimens are improperly collected, the first step is to evaluate the collection method to identify the specific issues causing the problem. This may involve assessing training protocols, specimen collection techniques, or compliance with established procedures. Once the root cause is identified, appropriate solutions can be implemented to improve specimen collection practices and ensure accurate results.
