ECG Review (Level 1)(AEMT)

How many seconds are represented by one Large box on the ECG paper?

How many seconds are represented by one Small box on the ECG paper?

Bradycardia is best described as a heart rate less than __ bpm.

Tachycardia is best described as a heart rate greater than __ bpm.

Place the steps of the 5 Step Approach in the correct sequence

• Heart Rate

• Rhythm

• P wave

• PR interval

• QRS complex

Match the part of the ECG complex with which phase of cardiac conduction is occurring

• QRS complex

• Atrial depolarization

• T wave

• Ventricular re-polarization

• P wave

• Ventricular depolarization, atrial re-polarization

Normal duration of the P wave

• 0.12 - 0.20 seconds

• 0.10 seconds

• < 0.12 seconds

• 0.04 seconds

• >0.12 seconds

Normal duration of the PR interval

• 0.12 - 0.20 seconds

• 0.10 seconds

• < 0.12 seconds

• 0.04 seconds

• >0.12 seconds

Normal duration of the QRS complex

• 0.12 - 0.20 seconds

• 0.10 seconds

• < 0.12 seconds

• 0.04 seconds

• >0.12 seconds

Categorize Appropriately

Groups:

(a) Standard Limb Leads

,

(b) Augmented Limb Leads

• Lead aVR

• Lead II

• Lead aVF

• Lead I

• Lead III

• Lead aVL