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One small square on an ECG is worth what amount of time?
What is one large square worth?
How many squares on and ECG make up 1 second of time?

0.04 seconds
0.2 seconds
5 large squares

What is the quickest way to determine a heartrate on and ECG strip?

Count the number of squares between QRS complexes. Divid 300 by this number. This equals beats per minute.
Example: If there are 4 large squares between each QRS complex then the heart rate is 300/4 = 75 bpm

Tachycardia is defined as what?

Over 100 BPM

Bradycardia is defined as what?

Less than 60 BPM

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