When something goes wrong in healthcare, the natural reaction is often to ask:
“What happened?”
But for organisations committed to quality and patient safety, that question is only the beginning.
A more important question is: “Why did it happen—and what can we do to prevent it from happening again?”
This is where Root Cause Analysis (RCA) becomes a powerful quality improvement and patient safety tool.
RCA provides a structured approach to understanding why an incident, problem or undesirable outcome occurred. Instead of simply treating the symptoms or blaming an individual, RCA encourages teams to examine the underlying factors within the system and process.
The objective is simple: Find the causes. Fix the system. Prevent recurrence.
Root Cause Analysis (RCA) is a systematic approach used to investigate an incident or problem and identify the underlying causes that contributed to it.
A superficial investigation might conclude: “The staff member made an error.”
RCA goes deeper. It asks:
The aim is not to find someone to blame. The aim is to understand why the system allowed the problem to occur.
Why describe RCA as both an art and a science?
Because effective RCA requires both structured methodology and human judgement.
The science comes from using systematic methods to collect evidence, analyse information, identify contributing factors and test possible causes.
Tools such as:
can help teams organise their thinking and avoid jumping to conclusions.
The art comes from knowing how to investigate effectively. A good RCA facilitator needs to ask the right questions, listen carefully, challenge assumptions and encourage people to speak openly.
The team must be able to distinguish between:
What happened → Contributing factors → Underlying causes → Root causes
This requires curiosity, critical thinking and an understanding of how people interact with complex healthcare systems.
Healthcare is a complex environment involving people, processes, technology, communication and decision-making.
When an incident occurs, there may be multiple contributing factors.
For example, consider a medication error.
It may be tempting to conclude:
“The nurse administered the wrong medication.”
But a deeper investigation might reveal several contributing factors:
The incident may therefore have been influenced by multiple system factors, rather than a single individual’s action.
RCA helps uncover those factors.
One of the biggest mistakes in RCA is stopping too early.
For example:
Problem: Medication was given to the wrong patient.
Why?
The patient’s identity was not checked correctly.
Why wasn’t it checked?
The staff member was rushing.
Why was the staff member rushing?
There was an unexpected increase in workload.
Why was the workload difficult to manage?
Staffing arrangements did not provide adequate flexibility during peak periods.
Now the investigation is beginning to move beyond the immediate error towards the underlying system factors.
This is the thinking behind techniques such as the 5 Whys.
The number “5” is not a rigid rule. The important principle is to continue asking meaningful “why” questions until the team reaches causes that can be addressed effectively.
A strong RCA requires an environment where people can discuss what happened honestly.
If the investigation becomes a search for someone to blame, staff may become defensive or reluctant to share information.
That can prevent the organisation from discovering the real causes.
Instead, RCA should encourage questions such as:
This approach supports a learning and improvement culture.
Understanding RCA in theory is useful. Knowing how to conduct an effective RCA in practice is even more valuable.
STS Academia’s online course, The Art & Science of Root Cause Analysis (RCA) – Your Answer for Lasting Solutions, is designed to help learners develop a structured approach to investigating problems and identifying underlying causes.
The course explores practical approaches and tools that can help participants:
✅ Understand the principles of Root Cause Analysis
✅ Distinguish symptoms, immediate causes, contributing factors and root causes
✅ Apply techniques such as the 5 Whys and Fishbone/Ishikawa analysis
✅ Analyse events systematically
✅ Identify opportunities for process improvement
✅ Develop meaningful corrective and preventive actions
✅ Move beyond blame towards system-based improvement
✅ Apply RCA principles to real-world healthcare problems
The course is particularly relevant to:
Whether you are new to RCA or want to strengthen your existing quality improvement skills, the course offers an opportunity to learn at your own pace.
Every incident presents a choice. We can fix the immediate problem and move on.
Or we can ask deeper questions, understand what happened and strengthen the system so that the problem is less likely to happen again.
That is the power of Root Cause Analysis.
RCA is not about finding someone to blame. It is about finding opportunities to improve.
If you want to develop your ability to investigate problems, identify underlying causes and create more sustainable solutions, now is the time to build your RCA skills.
Enrol in “The Art & Science of Root Cause Analysis (RCA) – Your Answer for Lasting Solutions” through STS Academia or Udemy.
Click on the link to enroll today: https://stsacademia.com/courses/root-cause-analysis/
STS Academia – Empowering healthcare professionals with practical knowledge for Quality and Safety .
STS is the principal trainer and founder of STS Academia, specializing in healthcare training in Infection Control, Quality, and Patient Safety. With over a decade of experience as the Chief Infection Control Officer at a leading private hospital group in Singapore and 10 years as an Adjunct Lecturer for Flinders University’s Master of Health Administration programme, He brings deep practical expertise to every course.He is committed to helping everyone, including healthcare professionals, build strong, evidence-based competencies they can apply immediately in their work environment.
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