EKG

Question 1

Characteristics of Atrial fibrillation

Answer 1

Rhythm is ALWAYS irregular
No P waves or T waves seen
Only able to calculate the ventricular rate and QRS

Question 2

Characteristics of ventricular fibrilllation

Answer 2

Cannot find any discernible measurements
- Disorganized, erratic undulations of varying amplitude
—LIFE-THREATENING

Question 3

Characteristics of atrial flutter

Answer 3

Rate is usually regular
Atrial rate: 250-350
Ventricular rate: 125-175
Atrial rhythm will have a “sawtooth” or “Pickett fence” pattern

Question 4

Characteristics of ventricular tachycardia

Answer 4

NO atrial rate, p waves, or PR interval
Ventricular rate: 101-225
Ventricular rhythm will be regular
QRS prolonged (>0.12seconds)
LIFE-THREATENING

Question 5

Characteristics of supraventricular tachycardia

Answer 5

No P waves
Atrial rate 140-220 (but can’t really tell P and T waves apart)
PR is indiscernible
Ventricular rate: 140-220
Ventricular rhythm regular
QRS normal

Question 6

Characteristic of idioventricular rhythm

Answer 6

NO P waves
Regular rhythm
Rate 20-40
QRS is always prolonged (>0.12seconds)

Question 7

Characteristics of atrial tachycardia

Answer 7

Atrial rate: 150-250
P wave usually embedded in T wave
Atrial rhythm and ventricular rhythm regular
Ventricular rate: 150-250
PR interval: 0.12-0.2 (normal)
QRS: NARROW (0.04-0.01)

Question 8

Normal PR Interval

Answer 8

0.12-0.20 seconds

Question 9

Normal QRS interval?

Answer 9

0.06-0.10 seconds