Foundations of Pharmacy Practice
Systems, safety, and evidence
This domain tests whether you can function inside a pharmacy system, not just recall drug facts. Expect questions on medication safety, compounding standards, quality improvement, and the interpretation of clinical literature.
Concepts you must own
- Error taxonomy: prescribing, transcribing, dispensing, administration, and monitoring errors; look-alike/sound-alike names and tall-man lettering; high-alert medications (insulin, heparin, opioids, concentrated electrolytes, chemotherapy, neuromuscular blockers) requiring independent double-checks.
- Safety culture: nonpunitive reporting of errors and near misses, root cause analysis aimed at system failures, and the distinction among a medication error, an adverse drug event, and an adverse drug reaction.
- Compounding standards: USP <795> nonsterile, USP <797> sterile (ISO 5 critical area with buffer and ante areas, environmental monitoring), and USP <800> hazardous drugs (containment, PPE, closed system transfer devices).
- Evidence-based practice: study design and levels of evidence, intention-to-treat analysis, primary versus surrogate endpoints, confidence intervals, and the difference between relative and absolute risk.
Traps
The most common trap is conflating relative and absolute risk reduction; a '50% reduction' can be clinically trivial. Writers also test that a p-value says nothing about effect size and that observational data cannot establish causation.
Worked example
A trial reports events in 8% of treated patients versus 12% of controls. Relative risk reduction = (12 − 8) ÷ 12 = 33%. Absolute risk reduction = 12% − 8% = 4% (0.04). Number needed to treat = 1 ÷ 0.04 = 25. All three statements describe the same result correctly; the answer choice must match the specific metric it names.