Wyoming MPJE (Pharmacy Jurisprudence) Practice Exam

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What size filter does a high-risk CSP need for sterilization?

  1. 0.02 or 0.22 micron filter

  2. 0.2 or 0.22 micron filter

  3. 0.5 or 0.52 micron filter

  4. 1.0 or 1.2 micron filter

The correct answer is: 0.02 or 0.22 micron filter

A high-risk CSP (Compounded Sterile Preparation) requires a 0.02 or 0.22 micron filter for sterilization. These filters are considered to be sterilizing-grade filters, which are necessary to remove microorganisms and particles from the CSP to minimize the risk of contamination. Using a filter with a larger pore size, such as the options in B, C, or D, may not effectively remove all microorganisms and particles, making the CSP potentially unsafe for patient use. Therefore, the correct choice is A.