The Ultimate IAHCSMM Quiz: Questions & Answers

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The Ultimate IAHCSMM Quiz: Questions & Answers - Quiz

IAHCSMM Or The International Association of Healthcare Central Service Materiel Management is the reputed association that represents healthcare Sterile Processing (SP) professionals across the world. Here is a quiz that consists of questions from the IAHCSMM book. Take the quiz to test your knowledge and learn more along the way.


Questions and Answers
  • 1. 

    Instruments with lumens should be soaked in a horizontal position.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    Vertical soaking cylinders are used to soak instruments with lumens so all surfaces will be contacted by the cleaning solution.

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  • 2. 

    The mechanical process by which an ultrasonic cleaner works is called cavitation.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    Ultrasonic cleaners work by a mechanical process called cavitation. Cavitation refers to the formation and implosion of tiny bubbles in a liquid due to high-frequency sound waves. These bubbles create intense pressure and temperature changes, which help in the cleaning process by dislodging dirt and contaminants from surfaces. Therefore, the statement is true.

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  • 3. 

    To prevent aerosols, items should be brushed below the surface of the water.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    Brushing items below the surface of the water can help prevent aerosols. Aerosols are tiny particles that can be released into the air when water is agitated or disturbed. By submerging items below the water's surface, the chances of aerosol formation are reduced because the water acts as a barrier and prevents the particles from being released into the air. This practice is often recommended in situations where there is a need to minimize the spread of potentially harmful substances or pathogens.

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  • 4. 

    Automatic washers clean using a spray-force action called inpingement.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    Automatic washers clean using a spray-force action called impingement, which means that water is sprayed onto the clothes with force to remove dirt and stains. This process is commonly used in modern washing machines to ensure effective cleaning. Therefore, the statement "Automatic washers clean using a spray-force action called impingement" is true.

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  • 5. 

    Instruments received from Surgery and tagged for repair do not need to be cleaned until they come back from repair.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    Instruments tagged for repair must still be cleared and decontaminated.

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  • 6. 

    Powered surgical instruments should be cleaned using a mechanical cleaning process.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    They are not designed for cleaning in automatic washer, and they must be manually cleaned and decontaminated.

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  • 7. 

    There are currently no methods available to verify cleaning process outcomes.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    The most common method of verifying the cleaning process is meticulous visual inspection after completing the cleaning process.

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  • 8. 

    Infectious medical waste is regulated by the EPA

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    Infectious medical waste, which refers to waste that contains pathogens, is indeed regulated by the Environmental Protection Agency (EPA). The EPA has guidelines and regulations in place to ensure the safe handling, storage, transportation, and disposal of infectious medical waste to prevent the spread of diseases and protect public health and the environment. Therefore, the statement "Infectious medical waste is regulated by the EPA" is true.

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  • 9. 

    Horziontal work surfaces in the decontamination area should be cleaned and disinfected once per day.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    Horziontal work surfaces in decontamination area should be cleaned at the beginning and end of each shift.

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  • 10. 

    PPE should be changed immediately if it becomes soaked with blood or other infectious material.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    PPE, or personal protective equipment, should be changed immediately if it becomes soaked with blood or other infectious material. This is because when PPE is saturated with such substances, it can no longer effectively protect the wearer from potential infection or contamination. Therefore, it is crucial to replace the soaked PPE with clean and dry equipment to maintain a safe and hygienic environment.

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  • 11. 

    What is the preferred pH for detergents used for most cleaning processes?

    • A.

      Low pH

    • B.

      High pH

    • C.

      Neutral pH

    • D.

      It depends on the water temperature and exposure time.

    Correct Answer
    C. Neutral pH
    Explanation
    Detergents used for most cleaning processes are preferred to have a neutral pH. This is because a neutral pH is neither too acidic nor too alkaline, making it safe and effective for cleaning various surfaces and materials. A neutral pH ensures that the detergent does not cause damage or corrosion to the objects being cleaned, while still being able to effectively remove dirt and stains. Additionally, a neutral pH is generally more compatible with the natural pH of the skin, making it less likely to cause irritation or harm when in contact with the skin.

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  • 12. 

    Which of the following is an example of regulated medical waste?

    • A.

      Discarded sterilization wraps

    • B.

      Blood-soaked sponges

    • C.

      Used copier toner cartridges

    • D.

      General trash from the surgery department

    Correct Answer
    B. Blood-soaked sponges
    Explanation
    Blood-soaked sponges are considered an example of regulated medical waste because they are contaminated with blood or other potentially infectious materials. Regulated medical waste refers to any waste generated in healthcare facilities that may pose a risk of infection to healthcare workers, patients, or the general public. This waste must be properly handled, treated, and disposed of according to specific regulations and guidelines to prevent the spread of infections and protect public health. Discarded sterilization wraps, used copier toner cartridges, and general trash from the surgery department do not fall under the category of regulated medical waste.

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  • 13. 

    Which of the following statements about the use of mechanical washers is NOT true?

    • A.

      Multi-level trays should be separated

    • B.

      Trays with lids should be opened

    • C.

      Instruments should be disassembled and opened

    • D.

      All items should be washed on the same cycle

    Correct Answer
    D. All items should be washed on the same cycle
    Explanation
    It is important to wash items on different cycles based on their specific requirements and level of contamination. Washing all items on the same cycle may not effectively clean or disinfect certain items, leading to potential cross-contamination.

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  • 14. 

    Water must be degassed each time the ultrasonic cleaner's tank is changed, because

    • A.

      Excess bubbles from filling reduce the energy of the cavitation process

    • B.

      Excess bubbles reduce the effectiveness of the detergent

    • C.

      Excess bubbles decreased the temperature of the tank

    • D.

      Excess bubbles make it difficult to see items being cleaned.

    Correct Answer
    A. Excess bubbles from filling reduce the energy of the cavitation process
    Explanation
    When the ultrasonic cleaner's tank is changed, it is necessary to degas the water because excess bubbles from filling reduce the energy of the cavitation process. Cavitation is the formation and collapse of tiny bubbles in the liquid, which creates intense pressure waves that help in cleaning. If there are too many bubbles in the water, they can interfere with the cavitation process and reduce its effectiveness. Therefore, degassing the water helps to remove these excess bubbles and ensure optimal cleaning performance.

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  • 15. 

    Specialized clothing or equipment worn by an employee for protection against a hazard is called:

    • A.

      Restricted Apparel

    • B.

      Safety Apparel

    • C.

      Hazard Equipment

    • D.

      Personal Protective Equipment

    Correct Answer
    D. Personal Protective Equipment
    Explanation
    Personal Protective Equipment refers to specialized clothing or equipment that is worn by employees to protect them from hazards in the workplace. This can include items such as helmets, gloves, goggles, and masks. The term "Personal Protective Equipment" encompasses a wide range of items that are designed to keep employees safe and prevent accidents or injuries. It is an essential part of workplace safety protocols and is required in many industries to ensure the well-being of employees.

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  • 16. 

    Written cleaning instructions for surgical instruments should be provided by:

    • A.

      The mechanical washer manufacturer

    • B.

      The instrument manufacturer

    • C.

      The detergent manufacturer

    • D.

      The healthcare facility

    Correct Answer
    B. The instrument manufacturer
    Explanation
    The correct answer is the instrument manufacturer. The instrument manufacturer is responsible for providing written cleaning instructions for surgical instruments because they have the expertise and knowledge about their specific instruments. They understand the materials used, the design, and the proper cleaning methods to ensure the instruments are effectively cleaned and maintained. The instrument manufacturer's instructions are crucial for healthcare facilities to follow to ensure the longevity and functionality of the instruments and to prevent any potential risks or damage during the cleaning process.

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  • 17. 

    Pyrogens:

    • A.

      Are fever-producing substances

    • B.

      Are microorganisms that have survived sterilization

    • C.

      Cause CJD

    • D.

      Are soiled particles

    Correct Answer
    A. Are fever-producing substances
    Explanation
    Pyrogens are substances that can induce fever in the body. They can be either endogenous (produced by the body itself) or exogenous (introduced from outside sources). When pyrogens enter the body, they stimulate the release of certain chemicals that raise the body's temperature, leading to fever. This response is a part of the body's immune system and helps to fight off infections. Therefore, the correct answer is that pyrogens are fever-producing substances.

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  • 18. 

    Softened water:

    • A.

      Increases the likelihood of mineral scale deposits

    • B.

      Decreases the likelihood of mineral scale deposits

    • C.

      In not compatible with detergents

    • D.

      Can cause rusting of metal substances

    Correct Answer
    B. Decreases the likelihood of mineral scale deposits
    Explanation
    Softened water decreases the likelihood of mineral scale deposits. When water is softened, the minerals that cause scale buildup, such as calcium and magnesium, are removed. This process helps prevent the formation of mineral deposits on surfaces like pipes, appliances, and fixtures. Softened water is less likely to leave behind mineral residue, resulting in cleaner and more efficient operation of water-using devices.

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  • 19. 

    The desired solution for cleaning instruments is:

    • A.

      Soap

    • B.

      Steam

    • C.

      A disinfectant

    • D.

      A detergent

    Correct Answer
    D. A detergent
    Explanation
    A detergent is the desired solution for cleaning instruments because it is specifically designed to remove dirt, grease, and other types of residue from surfaces. Unlike soap, which is primarily used for personal hygiene, detergents have more powerful cleaning agents that can effectively break down and remove tough stains and contaminants. Steam and disinfectants may be used in addition to a detergent to ensure thorough cleaning and sterilization of the instruments.

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  • 20. 

    These are used to breakdown fatty tissue on instruments:

    • A.

      Protease enzymes

    • B.

      Lipase enzymes

    • C.

      Amylase enzymes

    • D.

      Neutral pH cleaners

    Correct Answer
    B. Lipase enzymes
    Explanation
    Lipase enzymes are used to breakdown fatty tissue on instruments. Lipase is a type of enzyme that specifically breaks down lipids or fats. When used in cleaning solutions, lipase enzymes help to remove and break down any fatty residues or deposits on instruments, making them clean and free from grease or oil. This is important in maintaining the cleanliness and functionality of instruments, especially in medical and laboratory settings where contamination from fatty tissues can be a concern.

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  • 21. 

    To prevent coagulation of proteins, water temperature should be:

    • A.

      Below 43°C (110°F)

    • B.

      Above 43°C (110°F)

    • C.

      Below 100°C (212°F)

    • D.

      Below 24°C (75°F)

    Correct Answer
    A. Below 43°C (110°F)
    Explanation
    To prevent coagulation of proteins, the water temperature should be below 43°C (110°F). Coagulation is the process in which proteins denature and clump together, resulting in a solid or semi-solid substance. Higher temperatures can cause the proteins to denature and coagulate more quickly. Therefore, keeping the water temperature below 43°C (110°F) helps to maintain the integrity of proteins and prevent coagulation.

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  • 22. 

    Instrument lubrication is performed:

    • A.

      Immediately before use

    • B.

      After sterilization

    • C.

      After cleaning

    • D.

      Before cleaning

    Correct Answer
    C. After cleaning
    Explanation
    Instrument lubrication is performed after cleaning because cleaning removes any debris, contaminants, or residue from the instrument's surface. Lubrication helps to reduce friction and maintain the smooth operation of the instrument. If lubrication is done before cleaning, it can trap or spread contaminants, compromising the cleanliness and effectiveness of the instrument. Therefore, it is essential to clean the instrument thoroughly before applying lubrication to ensure optimal performance and prevent any potential damage or contamination.

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  • 23. 

    Aluminum items should be cleaned:

    • A.

      Using a circular motion

    • B.

      Using a to and fro motion with the grain

    • C.

      Using a stiff metal brush

    • D.

      Using a water spray

    Correct Answer
    B. Using a to and fro motion with the grain
    Explanation
    When cleaning aluminum items, it is recommended to use a to and fro motion with the grain. This means moving the cleaning tool back and forth in the direction of the natural grain of the aluminum. This method helps to prevent scratching or damaging the surface of the aluminum. Using a circular motion or a stiff metal brush can cause abrasions or scratches on the aluminum, while using a water spray alone may not effectively remove dirt or grime.

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  • 24. 

    Powered surgical instruments:

    • A.

      Can not be immersed

    • B.

      Can be immersed

    • C.

      Should be cleaned at the point of use

    • D.

      Should be cleaned using a mechanical washer

    Correct Answer
    A. Can not be immersed
    Explanation
    Powered surgical instruments cannot be immersed because they contain electrical components that can be damaged by water. Immersion in water can cause short circuits and corrosion, leading to malfunction or even complete failure of the instrument. Therefore, it is important to avoid submerging powered surgical instruments in water and instead follow the manufacturer's instructions for proper cleaning and disinfection methods.

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  • 25. 

    The use of heat to kill microorganisms, expect spores.

    • A.

      Sterilization

    • B.

      Thermal Disinfection

    Correct Answer
    B. Thermal Disinfection
    Explanation
    Thermal disinfection refers to the use of heat to eliminate or reduce the number of microorganisms, excluding spores. This process involves subjecting the objects or surfaces to high temperatures for a specified period of time, which effectively kills or inactivates the majority of the microorganisms present. While sterilization aims to completely eliminate all forms of microbial life, thermal disinfection is a less intense method that targets most microorganisms, but not spores. This method is commonly used in healthcare settings to ensure the cleanliness and safety of medical equipment and supplies.

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  • 26. 

    Detergents used in mechanical cleaners should be:

    • A.

      Low alkaline

    • B.

      Low acid

    • C.

      Low temperature

    • D.

      Low foaming

    Correct Answer
    D. Low foaming
    Explanation
    Detergents used in mechanical cleaners should be low foaming because excessive foam can interfere with the cleaning process and cause problems such as reduced cleaning efficiency, overflow, and damage to the equipment. Low foaming detergents ensure that the cleaning solution can effectively penetrate and clean the surfaces without creating excessive foam. This allows the mechanical cleaner to operate efficiently and effectively.

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  • 27. 

    Compounds that contain a positive electrical charge. They exhibit germicidal properties.

    • A.

      Cationic

    • B.

      Anionic

    Correct Answer
    A. Cationic
    Explanation
    Cationic compounds are substances that carry a positive electrical charge. These compounds have the ability to exhibit germicidal properties, meaning they can kill or inhibit the growth of microorganisms. This is because the positive charge of cationic compounds allows them to interact with and disrupt the cell membranes of bacteria, viruses, and other pathogens. As a result, cationic compounds are often used in disinfectants, sanitizers, and antiseptics to effectively eliminate harmful microorganisms.

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  • 28. 

    A chemical which kills most pathogenic organisms, but does not kill spores.

    • A.

      Antiseptic

    • B.

      Disinfectant

    Correct Answer
    B. Disinfectant
    Explanation
    A disinfectant is a chemical that is effective in killing most pathogenic organisms, such as bacteria and viruses. However, it is not effective in killing spores, which are a dormant form of certain microorganisms that can resist harsh conditions. This is why a disinfectant is not suitable for sterilization purposes, where the complete elimination of all microorganisms, including spores, is required.

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  • 29. 

    A solution which inhibits the growth of bacteria. It is usually used topically and only on animate objects.

    • A.

      Antiseptic

    • B.

      Disinfectant

    Correct Answer
    A. Antiseptic
    Explanation
    An antiseptic is a solution that is used to inhibit the growth of bacteria. It is typically applied topically and is safe to use on animate objects, such as the human body. Antiseptics are commonly used for cleaning wounds or preparing the skin for medical procedures. They work by killing or preventing the growth of bacteria, reducing the risk of infection. In contrast, disinfectants are used on inanimate objects and are designed to kill a broader range of microorganisms, including bacteria, viruses, and fungi.

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  • 30. 

    The length of time a disinfectant can be properly stored after which it must be discarded.

    • A.

      Use life

    • B.

      Shelf life

    Correct Answer
    B. Shelf life
    Explanation
    Shelf life refers to the length of time a disinfectant can be stored and used effectively before it expires and must be discarded. It indicates the period during which the disinfectant maintains its potency and effectiveness. Once the shelf life is exceeded, the disinfectant may lose its efficacy and become less effective in killing germs and bacteria. Therefore, it is important to adhere to the recommended shelf life to ensure the disinfectant's optimal performance.

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  • 31. 

    Compounds that have a negative electrical charge. They form a large group of synthetic detergents.

    • A.

      Cationic

    • B.

      Anionic

    Correct Answer
    B. Anionic
    Explanation
    Anionic compounds have a negative electrical charge. They are formed by gaining electrons, resulting in a negatively charged ion. Anionic compounds are commonly found in synthetic detergents, as they have the ability to attract and remove dirt and grease. Therefore, the correct answer is "Anionic".

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  • 32. 

    The destruction of nearly all pathogenic microoganisms on an inanimate surface.

    • A.

      Sterilization

    • B.

      Disinfection

    Correct Answer
    B. Disinfection
    Explanation
    Disinfection refers to the process of eliminating or reducing the number of pathogenic microorganisms on an inanimate surface. While sterilization involves the complete destruction of all microorganisms, disinfection focuses on reducing their numbers to a safe level. Therefore, the given answer, "Disinfection," is correct as it accurately describes the destruction of most pathogenic microorganisms on a surface, without achieving complete sterilization.

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  • 33. 

    Relating to the destruction of bacteria.

    • A.

      Bactericidal

    • B.

      Sterilization

    Correct Answer
    A. Bactericidal
    Explanation
    Bactericidal refers to a substance or treatment that is capable of killing bacteria. It is specifically used to describe agents that can destroy bacteria by targeting and disrupting their cellular structures or metabolic processes. Bactericidal agents are effective in reducing or eliminating bacterial populations, making them an important tool in preventing and treating bacterial infections. This term is used to differentiate from bacteriostatic, which refers to substances that inhibit the growth or reproduction of bacteria without necessarily killing them. Sterilization, on the other hand, refers to the complete elimination or destruction of all forms of microbial life, including bacteria, viruses, and fungi.

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  • 34. 

    The length of time (or number of uses) after which the efficiency of a disinfectant is diminished.

    • A.

      Shelf life

    • B.

      Use life

    Correct Answer
    B. Use life
    Explanation
    The term "use life" refers to the length of time or number of uses after which the efficiency of a disinfectant is diminished. This means that after a certain period or number of uses, the disinfectant may not be as effective in killing or reducing the growth of microorganisms. It is important to consider the use life of a disinfectant to ensure that it is still capable of providing the desired level of disinfection. Shelf life, on the other hand, refers to the length of time that a product can be stored before it is no longer usable or effective.

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  • 35. 

    A process by which all forms of microbial life are destroyed.

    • A.

      Sterilization

    • B.

      Disinfection

    Correct Answer
    A. Sterilization
    Explanation
    Sterilization refers to the process of completely eliminating all forms of microbial life. It ensures the destruction of bacteria, viruses, fungi, and other microorganisms, as well as their spores. This process is commonly used in healthcare settings, laboratories, and food industries to prevent the spread of infections and diseases. Disinfection, on the other hand, refers to the reduction of microbial populations to a level that is considered safe for public health. While disinfection reduces the number of microorganisms, it does not guarantee complete elimination like sterilization does.

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  • 36. 

    The use of heat to kill all microorganisms, except spores, is called:

    • A.

      Sterilization

    • B.

      Thermal Disinfection

    • C.

      High-Level Disinfection

    • D.

      Mechanical Disinfection

    Correct Answer
    B. Thermal Disinfection
    Explanation
    Thermal disinfection refers to the use of heat to kill all microorganisms, except spores. This process involves subjecting the objects or surfaces to high temperatures for a specified period of time to ensure the destruction of most pathogens. It is a commonly used method in healthcare settings to decontaminate medical equipment and instruments. Sterilization, on the other hand, refers to the complete elimination of all forms of microbial life, including spores. High-level disinfection is a process that eliminates most microorganisms, but not necessarily spores. Mechanical disinfection is not a recognized term in the context of microbial control.

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  • 37. 

    These chemicals are used on animate (living tissue) to slow the growth of microorganisms:

    • A.

      Glutaraldehydes

    • B.

      Disinfectants

    • C.

      Halogens

    • D.

      Antiseptics

    Correct Answer
    D. Antiseptics
    Explanation
    Antiseptics are used on living tissue to slow the growth of microorganisms. Unlike disinfectants, which are used on inanimate objects, antiseptics are specifically formulated to be safe for use on skin and other living tissues. Glutaraldehydes and halogens are disinfectants, not antiseptics, and are typically used to kill microorganisms on surfaces and equipment. Therefore, antiseptics are the correct answer in this context.

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  • 38. 

    Items that are introduced directly into the bloodsteam or other normally sterile areas of the body are classified as:

    • A.

      Critical Items

    • B.

      Semi-Critical Items

    • C.

      Non-Critical Items

    • D.

      Equipment

    Correct Answer
    A. Critical Items
    Explanation
    Items that are introduced directly into the bloodstream or other normally sterile areas of the body are classified as critical items. These items have a high risk of causing infections if not properly sterilized or if contaminated. Examples of critical items include surgical instruments, catheters, and needles. These items require thorough sterilization techniques to ensure patient safety and prevent the spread of infections.

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  • 39. 

    The process by which all forms of microorganisms are completely destroyed is called:

    • A.

      High-level disinfection

    • B.

      Thermal disinfection

    • C.

      Sterilization

    • D.

      Chemical disinfection

    Correct Answer
    C. Sterilization
    Explanation
    Sterilization is the correct answer because it refers to the process of completely eliminating or destroying all forms of microorganisms, including bacteria, viruses, and fungi. This is achieved through various methods such as heat, chemicals, or radiation. Unlike high-level disinfection, which may not eliminate all types of microorganisms, sterilization ensures complete eradication of all forms of life. Thermal disinfection and chemical disinfection are effective in reducing the number of microorganisms but do not guarantee complete destruction.

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  • 40. 

    Iodophors are a member of this disinfectant family:

    • A.

      Halogens

    • B.

      Quaternary Ammonium Compounds

    • C.

      Alcohol

    • D.

      Phenolics

    Correct Answer
    A. Halogens
    Explanation
    Iodophors are a member of the halogens disinfectant family. Halogens are a group of chemical elements that include iodine, chlorine, bromine, fluorine, and astatine. Iodophors are compounds that contain iodine and are commonly used as disinfectants due to their antimicrobial properties. They are effective against a wide range of microorganisms and are commonly used in healthcare settings for disinfection purposes.

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  • 41. 

    Phenolics are classified as:

    • A.

      Intermediate to low-level disinfectants

    • B.

      Intermediate to high-level disinfectants

    • C.

      High-level disinfectants

    • D.

      Sterilants

    Correct Answer
    A. Intermediate to low-level disinfectants
    Explanation
    Phenolics are classified as intermediate to low-level disinfectants because they have a broad spectrum of activity against various microorganisms, including bacteria, viruses, and fungi. They are effective in killing most vegetative bacteria and some viruses but may not be as effective against bacterial spores. Phenolics are commonly used in healthcare settings for disinfecting non-critical surfaces and equipment. While they have a good antimicrobial activity, they are not considered high-level disinfectants or sterilants, as they may not completely eliminate all types of microorganisms.

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  • 42. 

    Which of the following are classified as high-level disinfectants?

    • A.

      Glutaraldehyde and OPA

    • B.

      Glutaraldehyde and Phenolics

    • C.

      Quaternary Ammonium Compunds and Phenolics

    • D.

      Halogens and OPA

    Correct Answer
    A. Glutaraldehyde and OPA
    Explanation
    Glutaraldehyde and OPA are classified as high-level disinfectants because they have the ability to kill or inactivate a wide range of microorganisms, including bacteria, viruses, fungi, and mycobacteria. High-level disinfectants are typically used for medical instruments and equipment that come into contact with mucous membranes or non-intact skin, as they have a higher level of effectiveness compared to intermediate or low-level disinfectants. Glutaraldehyde and OPA have been proven to be effective in achieving high-level disinfection and are commonly used in healthcare settings.

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  • 43. 

    Thermal disinfection is accomplished using

    • A.

      Heated chemicals

    • B.

      Heated glurataldehyde

    • C.

      Prolonged high pressure steam

    • D.

      Heated water

    Correct Answer
    D. Heated water
    Explanation
    Thermal disinfection is accomplished using heated water because high temperatures can effectively kill or inactivate microorganisms. Heating water to a certain temperature can ensure that it reaches the necessary level of thermal energy to destroy pathogens. This method is commonly used in various settings, such as hospitals and food processing industries, to sanitize equipment, utensils, and surfaces. By using heated water, the heat can penetrate and eliminate bacteria, viruses, and other harmful organisms, providing an effective means of disinfection.

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  • 44. 

    How long must alcohol remain in wet contact with an item to achieve a reasonable level of disinfection?

    • A.

      3 minutes

    • B.

      5 minutes

    • C.

      10 minutes

    • D.

      20 minutes

    Correct Answer
    B. 5 minutes
    Explanation
    Alcohol must remain in wet contact with an item for at least 5 minutes to achieve a reasonable level of disinfection. This is because alcohol needs sufficient time to effectively kill bacteria and viruses on the surface. A shorter contact time may not be enough to completely eliminate harmful microorganisms. Therefore, a 5-minute contact time is recommended to ensure proper disinfection.

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  • 45. 

    Which of the following would be the best choice for high level disinfection of instruments?

    • A.

      Phenolics

    • B.

      Chlorine

    • C.

      Iodophors

    • D.

      OPA

    Correct Answer
    D. OPA
    Explanation
    OPA (ortho-phthalaldehyde) would be the best choice for high level disinfection of instruments. OPA is a high-level disinfectant that is effective against a wide range of microorganisms, including bacteria, viruses, and fungi. It has a fast-acting and broad-spectrum antimicrobial activity, making it suitable for disinfecting medical instruments. OPA is also less toxic and has less odor compared to other disinfectants like chlorine and phenolics. Additionally, OPA has a longer shelf life and can be reused for a certain number of times, making it a cost-effective choice for high level disinfection.

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  • 46. 

    Do items need to be cleaned before they are sterilized, and do they also need to be cleaned before they are disinfected?

    • A.

      Yes

    • B.

      No

    Correct Answer
    A. Yes
    Explanation
    Yes. Items should be cleaned before they are sterilized to ensure that the sterilization process is effective. Similarly, items should also be cleaned before they are disinfected to remove organic matter and debris, which can interfere with the disinfection process and reduce its effectiveness. Therefore, both cleaning and disinfection processes typically require pre-cleaning steps.

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  • 47. 

    When liquid chemicals are labeled as both a high-level disinfectant and a sterilant, the time required to achieve sterilization is no longer than the time required to achieve high-level disinfection.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    When liquid chemicals are labeled as both a high-level disinfectant and a sterilant, it means that they are capable of killing or inactivating all forms of microbial life, including high levels of resistant microorganisms. Therefore, the time required to achieve sterilization, which is the complete elimination of all microorganisms, would not be longer than the time required to achieve high-level disinfection, which only kills or inactivates most microorganisms but not necessarily all. Hence, the statement is true.

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  • 48. 

    Mechanical washers and washer-decontaminators are regulated by the CDC.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    Mechanical washers and washer-decontaminators are not regulated by the CDC. The CDC is the Centers for Disease Control and Prevention, which is primarily responsible for protecting public health and safety. While the CDC provides guidelines and recommendations for the use of mechanical washers and washer-decontaminators in healthcare settings, they are not directly regulated by the CDC. The regulation of these machines may fall under the jurisdiction of other organizations or regulatory bodies, such as the Food and Drug Administration (FDA) or Occupational Safety and Health Administration (OSHA).

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  • 49. 

    All liquid disinfectants are capable of sterilization if their exposure time is increased.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    This statement is false because not all liquid disinfectants are capable of sterilization, even if their exposure time is increased. Sterilization refers to the complete elimination of all forms of microbial life, including bacteria, viruses, and spores. While some liquid disinfectants may be effective in killing or reducing the number of microorganisms, they may not be able to achieve sterilization. Sterilization usually requires more stringent methods, such as heat, pressure, or certain chemical agents specifically designed for this purpose.

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  • 50. 

    Log books should be maintained when using Gluataraldehyde and OPA.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    Glutaraldehyde and OPA are high-level disinfectants commonly used in healthcare settings. These chemicals are potent and can be harmful if not handled properly. To ensure safety and compliance, log books should be maintained when using these substances. Log books help in documenting important information such as the date and time of usage, concentration, duration of exposure, and any adverse reactions or incidents that may occur. This documentation is crucial for monitoring and tracking the use of these disinfectants, as well as for regulatory compliance and quality control purposes.

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Quiz Review Timeline +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Mar 30, 2024
    Quiz Edited by
    ProProfs Editorial Team
  • Dec 12, 2013
    Quiz Created by
    Rtmcmanu
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