Common ECG patterns

Question 1

Answer 1

Torsade de Pointes

(Polymorphic ventricular tachycardia)

Question 2

Answer 2

Supraventricular Tachycardia

Question 3

Answer 3

Atrial Fibrillation

Question 4

Answer 4

Ventricular Tachycardia

Question 5

Answer 5

Pericarditis

(Saddle shaped ST elevation)

Question 6

Answer 6

2nd Degree Heart Block (Mobitz II)

Question 7

Answer 7

Atrial Flutter

(Saw tooth baseline)

Question 8

Answer 8

Sinus Ryhthm

(All complexes normal and frequency is between 60 to 100 beats per minute.)

Question 9

Answer 9

Sinus Bradycardia

(A sinus rhythm of less than 60 beats per minute.)

Question 10

Answer 10

Sinus Tachycardia

(The sinus node sends out electrical signals faster than usual, speeding up the rate. A sinus rhythm of more than 100 beats per minute.)

Question 11

Answer 11

Ventricular Fibrillation

Question 12

Answer 12

First Degree Heart Block

(involves affixed prolonged PR interval (>200 ms). Occurs between the SA node and the AV node (i.e. within the atrium).)

Question 13

Answer 13

Second Degree Heart Block (Mobitx I)

(: if the PR interval slowly increases then there is a dropped QRS complex (beat). This is a mobitz type I second degree AV block (Wenckebach). Occurs in the Av node. This is the only piece of conductive tissue in the heart which exhibits the ability to conduct at different speeds.)

Question 14

Answer 14

Second Degree Heart Block (Mobitx I)

Question 15

Answer 15

Second Degree Heart Block (Mobitx I)

Question 16

Answer 16

Second Degree Heart Block (Mobitx I)

Question 17

Answer 17

Second Degree Heart Block (Mobitx II)

(if the PR interval is fixed but there dropped beats, this is mobitz type II second degree heart block (clarify that by the frequency of dropped beats e.g. 2:1, 3:1, 4:1. Occurs after the AV node in the bundle of His or Purkinje Fibres. DROPPED QRS complex)

Question 18

Answer 18

Third Degree Heart block (Complete heart block)

In complete heart block, there is complete absence of AV conduction – none of the supraventricular impulses are conducted to the ventricles.

Question 19

Answer 19

Third Degree Heart block (Complete heart block)

Question 20

Answer 20

Third Degree Heart block (Complete heart block)

Question 21

Answer 21

Third Degree Heart block (Complete heart block)

Question 22

Answer 22

• ECG shows sinus rhythmwith a heart rate of 88 beats per minute. There are no abnormalities on the ECG.
• ECG diagnosis: Normal ECG

Question 23

Answer 23

• ECG shows sinus rhythmwith a heart rate of about 60 beats per minute. There are no abnormalities on the ECG.
• ECG diagnosis: Normal ECG, heart rate of about 60 beats/min

Question 24

Answer 24

• ECG shows atrial fibrillationwith a heart rate of 100 beats per minute.
• ECG diagnosis: Atrial fibrillation and LVH

Question 25

Answer 25

• ECG shows fast atrial fibrillationwith a heart rate of 180 beats per minute.
• ECG diagnosis: Fast atrial fibrillation

Question 26

Answer 26

Acute anterolateral myocardial infarction. Patient in sinus rhythm with a heart rate of 68 beats/min

Question 27

Answer 27

•ECG shows sinus rhythmwith a heart rate of 60 beats per minute. There is ST segment elevation in lead II, III, and aVF

ECG diagnosis: Acute inferior myocardial infarction. Patient in sinus rhythm with a heart rate of about 60 beats/min

Question 28

Answer 28

• ECG shows sinus rhythmwith a heart rate of 125 beats per minute. There is ST segment depression in lead V3-V6, Lead I and aVL.
• ECG diagnosis: anterolateral ischaemia. Patient in sinus tachycardia with a heart rate of about 125 beats/min

Question 29

Answer 29

Asystole