What is root cause analysis and how is it used to improve patient safety?

• A. A blame-centered process that identifies who made the error.
• B. A systematic process to identify underlying causes of errors; used to implement corrective actions and prevent recurrence, often via Plan-Do-Study-Act cycle.
• C. A form used for documenting patient complaints.
• D. A statistical method for evaluating therapy efficacy.

Answer: (B)

Root cause analysis is a systematic approach to examining an adverse event or near-miss to uncover underlying system factors rather than assigning blame to individuals. By collecting data, mapping how the event happened, and using tools such as 5 Whys or Ishikawa diagrams, a team identifies root causes—fundamental failures in processes, policies, communication, or the work environment. Once these are understood, they design corrective actions aimed at addressing those root causes and preventing recurrence. The Plan-Do-Study-Act cycle is often used to test and refine changes: plan a change, implement it on a small scale, study the outcomes, and act to expand, modify, or abandon the change. In patient safety, this approach fosters safer workflows, reduces errors, and supports a culture of continuous improvement. For example, a medication error might reveal root causes like frequent interruptions and unclear labeling, leading to interventions such as minimizing interruptions, improving labeling, implementing barcoding, and educating staff, followed by monitoring to ensure the change works.