ECG

Question 1

What is the classical appearance of RBBB on ECG?

Answer 1

‘M’ in lead V1 ‘W’ in lead V6

Question 2

In which ECG leads is it normal to have inverted T waves?

Answer 2

V1, III and aVR

Question 3

Which leads represent the right coronary artery on ECG?

Answer 3

II, III, aVF

Question 4

Answer 4

Atrial flutter

Question 5

how can you tell there is LVH on ECG?

Answer 5

• sum of S waves in V1/V2 and R in V5 or V6 > 35mm
• R in aVL >11mm

Question 6

Answer 6

Ventricular ectopic

(wide complex QRS)

Question 7

Answer 7

ventricular fibrillation

Question 8

How does atrial flutter appear on ECG?

Answer 8

Saw tooth p waves

Question 9

Answer 9

Atrial flutter

Question 10

How may LVH appear on ECG?

Answer 10

S wave in leads V1 or V2 + R wave in leads V5 or V6 =/> 35mm

Question 11

Answer 11

Ventricular ectopics

Question 12

Which are the lateral leads on ECG?

Answer 12

I, aVL, V5 and V6

Question 13

Answer 13

Complete heart block = 3rd degree heart block

(if your Ps and Qs don’t agree, you’ve got 3rd degree)

Question 14

Answer 14

First degree heart block

(PR interval more than 200 msecs)

Question 15

Answer 15

Sinus tachycardia

Question 16

How does atrial fibrillation appear on ECG?

Answer 16

Irregularly, irregular rhythm plus absence of p waves

Question 17

Answer 17

Atrial fibrillation

Question 18

Answer 18

Mobitz type 2

(Some P waves don’t get through)

Question 19

Answer 19

Wenckebach

(progressive lengthening of PR interval culminating in a dropped QRS)

Question 20

How much time is represented by one large square on an ECG?

Answer 20

200 msec = 0.2 sec

Question 21

What is a normal QRS complex duration?

Answer 21

3 small squares

Question 22

Which are the inferior leads on ECG?

Answer 22

II, III and aVF

Question 23

What is the ECG effect of hypokalaemia?

Answer 23

Flattening of T waves, with U waves

Question 24

How are atrial ectopics seen on ECG?

Answer 24

Early, narrow complex QRS followed by a compensatory pause

Question 25

How much time is represented by one small square on an ECG?

Answer 25

40 msec =0.04 secs

Question 26

Which leads represent the circumflex artery on ECG?

Answer 26

I, aVL, V5 and V6

Question 27

Answer 27

Complete heart block = 3rd degree heart block (if your Ps and Qs don't agree, you've got 3rd degree)

Question 28

Answer 28

Wenckebach (progressive lengthening of PR interval)

Question 29

Answer 29

Early diabetic retinopathy with microhaemorrhages

Question 30

Answer 30

Complete heart block | (Ps and Qs don't agree = 3rd degree)

Question 31

Answer 31

First degree heart block (PR interval more than 200 msecs)

Question 32

Which leads represent the LAD artery on ECG?

Answer 32

V3, V4

Question 33

How is first degree heart block defined on ECG?

Answer 33

PR interval \>200msec

Question 34

Answer 34

ventricular tachycardia

Question 35

Answer 35

Atrial fibrillation

Question 36

Answer 36

Ventricular ectopics

Question 37

Answer 37

Atrial flutter

Question 38

Answer 38

Premature atrial ectopics (narrow complex QRS with compensatory pause)

Question 39

How can you calculate HR from an ECG?

Answer 39

300/(number of big squares between every R wave)

Question 40

ECG findings for VT

Answer 40

Wide complex QRS with tachycardia

Question 41

Answer 41

Mobitz type 2 (Some P waves don't get through)

Question 42

Answer 42

ventricular fibrillation

Question 43

Answer 43

Premature atrial ectopics

Question 44

in which leads are inverted t waves normal?

Answer 44

avR V1 III (sometimes V-2)

Question 45

Which are the septal leads on ECG?

Answer 45

V1 and V2

Question 46

Answer 46

Wenckebach (progressive lengthening of PR interval culminating in a dropped QRS)

Question 47

What is the ECG effect of hyperkalaemia?

Answer 47

Tall, peaked T waves with widening of QRS

Question 48

What is the most specific finding on ECG to suggest LVH?

Answer 48

R wave is greater than 11 mm in lead aVL

Question 49

Which are the anterior leads on ECG?

Answer 49

V3 and V4

Question 50

Answer 50

ventricular tachycardia

Question 51

What is the classical appearance of LBBB on ECG?

Answer 51

'W' in lead V1 'M' in lead V6

Question 52

How are ventricular ectopics seen on ECG?

Answer 52

Early, broad complex QRS

Question 53

What is a normal PR interval?

Answer 53

3-5 small squares =

Question 54

Answer 54

ventricular fibrillation

Question 55

What is the definition of sinus rhythm on ECG?

Answer 55

P wave before every QRS