You are an FY2 in the medical ward
Notes:
A nurse on the ward has approached you. She is keen to learn and wants to know how to interpret a basic ECG.
Task:
1. Teach your colleague how to interpret an ECG
Opening Sentence: “Excuse me, Doctor. I know you’re busy, but I was hoping you could spare five minutes. I really want to get better at understanding ECGs. Could you show me the basics using this one?”
She has a normal ECG with her that she wants you to use as an example.
Open History (to give freely): “I can put the dots on and print the tracing, but honestly, after that, it’s all just squiggly lines to me. I hear people talking about P waves and QRS complexes, but I don’t really know what they are.”
ICE (Ideas, Concerns, Expectations):
•Ideas: “I know it’s about the electricity of the heart, but that’s about it.”
Expectation: “I’m hoping for a simple structure I can use every time I look at an ECG.”
How to Act: You are enthusiastic, keen to learn, and a little bit nervous. You are a good student.
More History (only if asked): You are a newly qualified nurse.
Assess the Learner: Start by asking what the nurse already knows to pitch the teaching at the right level.
Identify Learning Needs: Understand what she specifically wants to learn (a basic, structured approach).
Great and explore knowledge
Hi, of course. It’s great that you want to learn. It’s a really useful skill to have. So, tell me, what do you know already? You said it’s all squiggly lines, which is where everyone starts!”
Introduce a Structure:
You’re right, the key is to have a system so you look at it the same way every time. A simple one to start with is Rate, Rhythm. Let’s go through it step-by-step using your ECG.
Teach ‘Rate’:
First, let’s look at the Rate. The ECG paper is divided into big squares. A quick way to estimate the rate is to find a QRS complex that lands on a thick line. Then, count how many big squares there are until the next QRS complex. The rate is 300 divided by that number. So, if there are 4 big squares between beats, the rate is 300 divided by 4, which is 75 beats per minute. A normal rate is between 60 and 100.
Check understanding: “Can you try and work out the rate on this one?
Teach ‘Rhythm’ and Waves:
Next is Rhythm. We want to know if it’s regular and if it’s coming from the right place.
A normal rhythm is called the sinus rhythm. To be in sinus rhythm, two things must be true: first, the rhythm must be regular, meaning the distance between each QRS complex is the same. Second, every QRS complex must be preceded by a P wave.
The P wave represents the electrical signal starting in the atria, the top chambers of the heart.
The QRS complex is the big spike, and it represents the signal spreading through the ventricles, the main pumping chambers.
The T wave after it is the ventricles' resetting. So, if you see a P wave, then a QRS, then a T wave, and this pattern repeats regularly, you’re looking at a sinus rhythm.
Summarise and Encourage:
That’s the absolute basics of it. Rate and Rhythm are the most important things to get right first. So, every time you see an ECG, ask yourself: 1. What is the rate? (Is it too fast or too slow?). 2. What is the rhythm? (Is it regular? Is there a P wave before every QRS? If you can answer those two questions, you’ve made a great start. We can talk about axes and intervals another day, as they are a bit more advanced. How does that sound?
What is scenario testing? This is a teaching station. It tests the candidate’s ability to explain a complex topic to a colleague in a clear, structured, and encouraging way. It is not just about knowing the information but about being able to teach it effectively. Key skills are structuring the information, using simple language, checking understanding, and being supportive.