- Some pharmacies use a 'clean' and 'dirty' side for workflow on the compounding counter. What is the primary purpose of this separation?
Answer: To minimize the movement of contaminants into the final preparation area.
The 'clean/dirty' demarcation, especially in compounding, is a core infection control principle. The 'dirty' side is for initial staging of supplies and calculations, while the 'clean' side is where the actual manipulation and preparation of the compound occurs. This workflow minimizes the transfer of contaminants from outside packaging and the general environment into the critical preparation area.
- According to infection control best practices, when is it most critical to clean prescription counting trays and spatulas?
Answer: After counting medications that are known allergens.
While counting trays should be cleaned regularly, it is most critical to clean them after handling known allergens such as penicillin or sulfa drugs to prevent potentially life-threatening cross-contamination. Many facilities also clean after each use, but allergen cleanup is the minimum critical requirement for patient safety.
- What is the generally accepted minimum concentration of isopropyl alcohol (IPA) that should be used for disinfecting countertops and equipment in a pharmacy dispensing area?
Answer: 70%
70% isopropyl alcohol is the most effective concentration for disinfection. The presence of water (30%) helps the alcohol to denature the proteins of microorganisms. Higher concentrations, like 91% or 100%, evaporate too quickly to be effective and are less capable of penetrating cell walls.
- The primary reason for using low-lint wipes when cleaning pharmacy surfaces, especially in compounding areas, is to:
Answer: reduce the generation of particulate contaminants.
Low-lint wipes are designed to not shed fibers or particles during use. In a pharmacy, especially in areas where sterile or non-sterile compounding occurs, it is critical to minimize particulate contamination that could end up in a patient's medication. Regular paper towels or cloths can leave behind significant particulate matter.
- When cleaning equipment, such as an automated tablet counter, what should the technician do first?
Answer: Check the manufacturer's instructions for approved cleaning agents.
Automated pharmacy equipment is sensitive and expensive. Before attempting to clean it, the technician must consult the manufacturer's guidelines to use approved cleaning agents and methods that will not damage the machine's electronics or components. Spraying liquid directly onto the machine could cause severe damage.
- Which of the following pieces of equipment would most likely require a formal cleaning log to be maintained?
Answer: The electronic scale used for non-sterile compounding.
Equipment used for compounding, such as an electronic scale (balance), requires meticulous cleaning and documentation to ensure product quality and prevent cross-contamination. While other surfaces should be cleaned regularly, they typically do not require a formal, auditable cleaning log as compounding equipment does.
- What type of cleaning agent is required to clean surfaces contaminated with blood or other potentially infectious materials?
Answer: A 1:10 dilution of bleach and water
For blood or potentially infectious materials, a hospital-grade disinfectant or a freshly prepared 1:10 dilution of household bleach and water should be used. Isopropyl alcohol is a good general disinfectant but may not be sufficient for bloodborne pathogens. Glass cleaner and soap/water are inadequate.
- The process of using a chemical agent to kill pathogenic microorganisms on a surface, but not necessarily all microbial life, is known as:
Answer: Disinfection
Disinfection is the process that eliminates many or all pathogenic microorganisms, except bacterial spores, on inanimate objects. Sterilization kills all microbial life. Sanitization lowers the number of germs to a safe level. Antisepsis is the use of antimicrobial agents on living tissue.
- After dispensing penicillin tablets, what is the best practice for handling the counting tray and spatula?
Answer: Clean them immediately with isopropyl alcohol, then rinse with water.
Penicillin is a common and potent allergen. To prevent life-threatening cross-contamination, the counting tray and spatula must be cleaned immediately and thoroughly after use. The standard procedure is to clean with 70% isopropyl alcohol to remove and disinfect, followed by a water rinse to remove any alcohol residue. Delaying cleaning or using inadequate methods poses a significant patient safety risk.
- What is the proper procedure for disposing of wipes used to clean a chemotherapy spill?
Answer: Seal them in a plastic bag and place them in the yellow hazardous waste bin.
Materials contaminated with hazardous drugs like chemotherapy must be disposed of as trace hazardous waste. This typically involves placing them in a sealed bag and then into a designated, properly labeled yellow waste container for incineration. Regular trash, sharps containers, or rinsing are incorrect and unsafe disposal methods.
- Which of the following personal protective equipment (PPE) is most important for a technician to wear when cleaning up a spill of methotrexate powder, a hazardous drug?
Answer: An N95 respirator and two pairs of chemotherapy-rated gloves.
Cleaning a hazardous drug spill requires specific PPE to protect the handler. This includes an N95 respirator (or better) to prevent inhalation of airborne powder and double-gloving with chemotherapy-rated gloves to prevent skin absorption. The other options provide insufficient protection for this type of hazardous substance.
- To ensure effective disinfection, a cleaning agent must be left on a surface for a specific duration before being wiped away. What is this duration called?
Answer: Dwell time
The term for the amount of time a disinfectant must remain wet on a surface to effectively kill microorganisms is 'dwell time' or 'contact time'. The other terms are not standard terminology for this process in infection control.
- When cleaning up a spill of a non-hazardous liquid medication from the floor, what is the first step a pharmacy technician should take?
Answer: Place a 'Wet Floor' sign to prevent slips and falls.
Patient and staff safety is the top priority. The first step when any liquid is spilled on the floor is to place a warning sign to prevent accidents. After ensuring the area is safe from foot traffic, the technician can proceed with the appropriate cleanup procedure.
- A pharmacy technician has just finished counting sulfamethoxazole/trimethoprim tablets. What is the most critical immediate action to take before using the same counting tray for another patient's medication?
Answer: Thoroughly clean the tray and spatula with 70% isopropyl alcohol.
The correct action is to thoroughly clean the counting tray and spatula with 70% isopropyl alcohol. Sulfa drugs are a common cause of severe allergic reactions, and cross-contamination must be prevented. Wiping with a dry towel is insufficient to remove drug residue. Rinsing with water may not effectively remove all particles and is not a disinfectant. While using a dedicated tray is a good practice, it must still be cleaned after each use.
- Which cleaning standard is a critical component of preventing look-alike/sound-alike (LASA) medication errors related to pharmacy shelves?
Answer: Ensuring shelf labels are cleaned and remain legible.
While keeping shelves physically clean is important, a key aspect of cleaning as a safety measure is maintaining the integrity of all labeling. Dust, smudges, or residue can obscure drug names on shelf labels, increasing the risk of selecting the wrong medication, especially with LASA drug pairs. Ensuring labels are clean and clearly legible is a crucial cleaning task.
- A pharmacy technician is cleaning the dispensing area at the end of the day. According to best practices, which area should be cleaned LAST?
Answer: The floor in front of the dispensing counter.
Cleaning should proceed from the cleanest areas to the dirtiest to avoid spreading contaminants. The floor is considered the dirtiest area and should be cleaned last, after all countertops, shelves, and equipment have been wiped down.
- A pharmacy technician is preparing to clean the surfaces in the non-sterile compounding area. What is the correct order of operations?
Answer: Clean with a germicidal detergent, then disinfect with 70% isopropyl alcohol.
The proper procedure is to clean before you disinfect. Cleaning with a detergent removes dirt, grime, and organic matter that can interfere with the action of the disinfectant. After the surface is clean, a disinfectant like 70% isopropyl alcohol is applied to kill microorganisms.
- When a new bottle of a liquid medication is opened, its cap is accidentally dropped on the floor. What is the appropriate action?
Answer: Clean the cap thoroughly with 70% isopropyl alcohol and allow it to dry.
The floor is considered a highly contaminated surface. To ensure the medication is not contaminated, the cap must be disinfected. The most appropriate method is to clean it with 70% isopropyl alcohol and allow it to air dry completely before placing it back on the bottle. Rinsing with water or wiping with a dry towel is not sufficient for disinfection.
- After cleaning a counting tray used for warfarin, a high-alert medication, what is a key concern a technician must address?
Answer: Removing all warfarin residue to prevent dosing errors in subsequent fills.
Warfarin is a high-alert anticoagulant with a narrow therapeutic index. Even a small amount of residue (e.g., half a tablet) contaminating another patient's medication could cause a significant adverse drug event. Therefore, the primary concern is meticulously removing all residue to prevent inadvertent dosing of another patient.
- A technician notices dust and residue accumulating on the shelves where medication stock bottles are stored. How should this be addressed?
Answer: Systematically remove bottles, wipe shelves with a disinfectant, and allow them to dry.
Proper cleaning requires removing the stock bottles to ensure the entire shelf surface can be cleaned and disinfected. This prevents the accumulation of dust and potential contaminants that can be transferred during dispensing. Using a feather duster just spreads dust around, and ignoring it or spraying over bottles are not acceptable cleaning practices.
