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

• P wave

• PR interval

• Rhythm

• QRS complex

• Heart Rate

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

• P wave

• Ventricular re-polarization

• T wave

• Ventricular depolarization, atrial re-polarization

• QRS complex

• Atrial depolarization

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 aVL

• Lead aVF

• Lead III

• Lead I

• Lead II