Certified Professional in Patient Safety (CPPS) Practice Exam

In failure modes and effects analysis, what is the purpose of the risk priority number (RPN)?

1. It calculates the failure modes that will create the most errors

2. It specifies the failure modes that have been shown to cause harm

3. It identifies the highest priority failure modes to address

4. It prioritizes failure modes that do not require action

The correct answer is: It identifies the highest priority failure modes to address

The risk priority number (RPN) is a key component of failure modes and effects analysis (FMEA) that serves to identify and prioritize failure modes based on their potential impact. Specifically, the RPN is calculated by multiplying three factors: the severity of the potential failure, the likelihood of its occurrence, and the ability to detect the failure before it causes harm. By deriving the RPN values for different failure modes, teams can effectively sort them to determine which issues pose the greatest risk to patient safety or operational effectiveness. The higher the RPN, the more urgent it is to address that failure mode, thus directing resources and attention to areas that are likely to cause the most significant harm or disruption. This prioritization is critical because it helps healthcare organizations focus on the most significant risks first, leading to more effective interventions and ultimately enhancing patient safety. Therefore, identifying the highest priority failure modes to address based on their RPN aligns perfectly with the goal of FMEA, which is to enhance safety and quality in healthcare processes.