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1/ Welcome back, #medtwitter, to the latest installment of #12LeadThursday - #covid19 edition! Let’s put those calipers to work!

Take a look at this ECG. Approach it systematically. What do you see?
2/ In the above ECG, you’ve got an irregular narrow complex tachycardia. What’s your final read? Reply with your reasoning!
3/ Let’s take a closer look. In the graphic below, we’ve highlighted what you would expect to see in flutter - and none of it is present here. Our patient is fibbin’ away, folks.
4/ Once you’ve diagnosed new onset fib, ask yourself, why? Where did this come from?

One approach to secondary causes of fib is highlighted below: PIRATES.

Do you have another mnemonic or schema that you use for new fib? Let us know in the replies!
5/ Differentials help drive testing; once you’ve considered what the causes of new fib are, you can proceed with diagnostic tests. Hopefully you already have the EKG!
6/ And that concludes this week’s edition of #12LeadThursday!

You can also see the post and more on our website: coreimpodcast.com/2020/07/16/cov…

Finally, time for some credits: @KelseyGrossman authored this thread and @gregorykatz peer reviewed it.
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