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If you haven’t tried part 1, you can complete the first quiz here:

Welcome to the second ECG Quiz!

At the present time, many healthcare professionals from a diverse range of backgrounds are finding themselves being asked to perform and interpret the ECG. ECG interpretation is an essential skill, often underestimated in its complexity.

Test yourself with this short quiz (and refresh your knowledge with the answers!) below.

*Warning… the difficulty level has gone up from Quiz 1!

Once complete, please feel free to share your score at: or post your score in the comments section below! Have fun!

Question 1. What can you see on the rhythm strip below?

Question 2. What is the rhythm shown below?

Question 3. Which bundle branch block is present?

Question 4. What is shown on the rhythm strip below?

Question 5. What should the gain setting be on a standard 12-lead ECG?

Question 6. In which UK hospital was the first ever ECG recorded? BONUS QUESTION!

Scroll further down for the answers!












Question 1

Starting with something easy to overlook… first degree heart block.

How do we know this? The PR interval is over 200ms (significantly so!) and consistent.

Question 2

Easy when you know it…. atrial fibrillation.

It’s irregularly irregular and there are no visible P waves.

Question 3

Again, simple when you know the answer… left bundle branch block.

Question 4

A trickier question here, but this is actually just a run of four atrial ectopics – commonly known as premature atrial complexes, or PACs!

How do we know this? The different P wave morphology gives them away, they occur earlier than the next sinus beat would occur and the four PACs are followed by a post extra-systolic pause.

Question 5

The standard gain setting should be 10mm/mV.

Similar to Quiz 1, again this is the most important question of the quiz. Knowing the calibration settings is vital, particularly at a time where healthcare workers are being trained in this new skill in the battle against Covid-19. Mistakes happen – and if your ECG has been calibrated incorrectly, you must be able to spot it. In my experience, the basic things such as user error cause far more problems than advanced skills in rhythm interpretation. Always check the simple things first!

Question 6 – In which UK hospital was the first ever ECG recorded?

I am not revealing the answer here! I will put it on Twitter on Monday. Tweet your answer to the Bonus question (along with your score if you like!) to @ECGSarah …. and remember, in the current era of online pub-quiz, if you google you are only cheating yourself!

Now complete, please feel free to share your score at: or post your score in the comments section below! Have fun!

I hope you have enjoyed this ECG quiz, and don’t forget to visit our online catalogue to see our great range of 12-lead ECG courses available.

With thanks to Thomas Morris, author of the fantastic book ‘The Matter of the Heart’ for inspiring the bonus question.

Written by Sarah Hope (ECG Clinical Trainer & HealthCare Science Practitioner in Cardiac Science), Friday 17th April 2020

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