Sterile Products and Aseptic Techniques Flashcards
7 cards from real SAUDI PROMETRIC PHARMACIST practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Sterile Products and Aseptic Techniques flashcards as text
What ISO classification corresponds to the critical zone (formerly Class 100) required during aseptic compounding?
Answer: ISO 5
ISO 5 corresponds to the former Class 100 designation, permitting no more than 3,520 particles ≥0.5 µm per cubic meter at the critical work site.
Which filter pore size is classified as a sterilizing-grade filter for heat-labile solutions?
Answer: 0.22 µm
A 0.22 µm (or 0.2 µm) membrane filter is the sterilizing-grade filter that retains bacteria and most microorganisms, achieving sterility for heat-labile solutions.
What are the standard conditions for moist heat sterilization by autoclave?
Answer: 121°C for 15 minutes
Standard autoclave sterilization uses saturated steam at 121°C (15 psi) for a minimum of 15 minutes to achieve a sterility assurance level of 10⁻⁶.
Which biological indicator is used to validate moist heat (autoclave) sterilization?
Answer: Geobacillus stearothermophilus
Geobacillus stearothermophilus spores are the standard biological indicator for autoclave validation because of their exceptional resistance to moist heat.
What is the primary purpose of a laminar airflow workbench (LAFW) in sterile compounding?
Answer: To maintain ISO 5 (Class 100) conditions at the critical work site
LAFWs supply unidirectional HEPA-filtered airflow across the work surface to maintain ISO 5 conditions, protecting sterile products from particulate and microbial contamination.
Which antiseptic agent is preferred for skin antisepsis before insertion of an intravenous catheter?
Answer: Chlorhexidine gluconate 2%
Chlorhexidine gluconate 2% (often combined with isopropyl alcohol) is preferred for IV catheter insertion sites due to its broad-spectrum activity and persistent residual antimicrobial effect.
What does the acronym HEPA stand for in cleanroom air filtration?
Answer: High-Efficiency Particulate Air
HEPA stands for High-Efficiency Particulate Air; these filters remove at least 99.97% of particles ≥0.3 µm from the airstream.
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