Last updated 12/26/25
It’s flu season and everyone in the ED including staff is tachycardic. You’re clawing your way through the last 10 minutes of a 3-11pm shift when you feel a tap on your shoulder. You turn around and find the local orthopedic surgeon handing you the following ECG of their patient and asking, “Dude, is this sinus?”
ECG 1
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ECG 2
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ECG 3
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ECG 4
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ECG 5
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ECG 6
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ECG 7
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ECG 8
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ECG 9
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ECG 10
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ECG 11
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ECG 12
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ECG 13
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ECG 14
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ECG 15
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ECG 16
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ECG 17
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ECG 18
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ECG 19
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ECG 20
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ECG 21
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ECG 22
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ECG 23
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ECG 24
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ECG 25
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ECG 26
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ECG 27
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ECG 28
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ECG 29
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ECG 30
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ECG 31
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ECG 32
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ECG 33
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ECG 34
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ECG 35 Junctional
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ECG 36
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ECG 37
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ECG 38
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ECG 39 AIVR
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ECG 40
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This post is for education and not medical advice.