In a hospitalized patient, how many medication administration errors occur on average per day?

• A. Zero per day
• B. One per day
• C. Two per day
• D. Three or more per day

Answer: (B)

In hospital care, medication administration errors happen despite safeguards, because many steps are involved and interruptions or look-alike drugs can lead to slips and mistakes. The widely cited average used in safety education is about one error per patient per day. This figure acknowledges that a patient typically receives several medications daily, so even with barcodes, double checks, and standardized procedures, small errors still occur at a measurable rate. The types of errors include giving a drug at the wrong time, giving the wrong dose, or omitting a dose, and many of these are caught before causing harm, but they still count as errors on average per day.

Zero per day would imply flawless administration across all patients, which isn’t consistent with observed practice. Two per day or more would indicate a much higher rate than what is typically reported in inpatient settings with modern safety measures. Therefore, about one medication administration error per patient per day best reflects the common, evidence-backed average in many hospitals.