ECG Knowledge 1

What's that P-Wave doin'

100

Just hangin' out in my normal sinus era

What is upright, symmetrical, and present with every QRS complex

200

Atrial Fibrillation

Not clearly identifiable or fibrillatory

300

Replaced with these sometimes "pointy" things in Atrial Flutter

sawtooth "F-waves"

400

Any Junctional rhythm

Absent or inverted before or after the QRS

500

Supraventricular Tachycardia 

Absent or buried

Is that QRS wide or narrow

100

Sinus Bradycardia 

Narrow

200

> 0.11 seconds

Wide

300

Accelerated Junctional

Narrow

400

Ventricular Tachycardia 

Wide

500

Ventricular Fibrillation 

Absent

How long did you say that PRI was

100

This is the PRI range in a normal sinus rhythm

0.12 - 0.20 seconds

200

Atrial Fibrillation

Nor measurable 

300

Accelerated Junctional

< 0.12 seconds, if measurable 

400

The pattern found in Mobitz I

"going, going, gone"

500

The PRI description in Mobitz II

Constant, then dropped QRS unpredictably  

Let me get those heart rate numbers

100

Sinus Tachycardia 

100 - 150 bpm

200

Atrial Flutter

Variable

300

Junctional Rhythm 

40 - 60 bpm

400

Accelerated Idioventricular 

40 - 100 bpm

500

Agonal 

< 20 bpm

Give it to me straight: Am I regular or irregular

100

Sinus Tachycardia 

Regular 

200

Atrial Fibrillation 

Irregularly irregular 

300

Idioventricular 

Regular

400

Sinus Arrest 

Irregular 

500

Mobitz I

Irregular