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Nick's MD2 > ECG > Flashcards

ECG Flashcards

1
Q

What is the classical appearance of RBBB on ECG?

A

‘M’ in lead V1 ‘W’ in lead V6

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2
Q

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

A

V1, III and aVR

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3
Q

Which leads represent the right coronary artery on ECG?

A

II, III, aVF

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4
Q
A

Atrial flutter

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5
Q

how can you tell there is LVH on ECG?

A
  • sum of S waves in V1/V2 and R in V5 or V6 > 35mm
  • R in aVL >11mm
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6
Q
A

Ventricular ectopic

(wide complex QRS)

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7
Q
A

ventricular fibrillation

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8
Q

How does atrial flutter appear on ECG?

A

Saw tooth p waves

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9
Q
A

Atrial flutter

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10
Q

How may LVH appear on ECG?

A

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

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11
Q
A

Ventricular ectopics

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12
Q

Which are the lateral leads on ECG?

A

I, aVL, V5 and V6

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13
Q
A

Complete heart block = 3rd degree heart block

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

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14
Q
A

First degree heart block

(PR interval more than 200 msecs)

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15
Q
A

Sinus tachycardia

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16
Q

How does atrial fibrillation appear on ECG?

A

Irregularly, irregular rhythm plus absence of p waves

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17
Q
A

Atrial fibrillation

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18
Q
A

Mobitz type 2

(Some P waves don’t get through)

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19
Q
A

Wenckebach

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

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20
Q

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

A

200 msec = 0.2 sec

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21
Q

What is a normal QRS complex duration?

A

3 small squares

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22
Q

Which are the inferior leads on ECG?

A

II, III and aVF

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23
Q

What is the ECG effect of hypokalaemia?

A

Flattening of T waves, with U waves

24
Q

How are atrial ectopics seen on ECG?

A

Early, narrow complex QRS followed by a compensatory pause

25
Q

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

A

40 msec =0.04 secs

26
Q

Which leads represent the circumflex artery on ECG?

A

I, aVL, V5 and V6

27
Q
A

Complete heart block = 3rd degree heart block

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

28
Q
A

Wenckebach

(progressive lengthening of PR interval)

29
Q
A

Early diabetic retinopathy with microhaemorrhages

30
Q
A

Complete heart block

(Ps and Qs don’t agree = 3rd degree)

31
Q
A

First degree heart block

(PR interval more than 200 msecs)

32
Q

Which leads represent the LAD artery on ECG?

A

V3, V4

33
Q

How is first degree heart block defined on ECG?

A

PR interval >200msec

34
Q
A

ventricular tachycardia

35
Q
A

Atrial fibrillation

36
Q
A

Ventricular ectopics

37
Q
A

Atrial flutter

38
Q
A

Premature atrial ectopics

(narrow complex QRS with compensatory pause)

39
Q

How can you calculate HR from an ECG?

A

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

40
Q

ECG findings for VT

A

Wide complex QRS with tachycardia

41
Q
A

Mobitz type 2

(Some P waves don’t get through)

42
Q
A

ventricular fibrillation

43
Q
A

Premature atrial ectopics

44
Q

in which leads are inverted t waves normal?

A

avR

V1

III

(sometimes V-2)

45
Q

Which are the septal leads on ECG?

A

V1 and V2

46
Q
A

Wenckebach

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

47
Q

What is the ECG effect of hyperkalaemia?

A

Tall, peaked T waves with widening of QRS

48
Q

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

A

R wave is greater than 11 mm in lead aVL

49
Q

Which are the anterior leads on ECG?

A

V3 and V4

50
Q
A

ventricular tachycardia

51
Q

What is the classical appearance of LBBB on ECG?

A

‘W’ in lead V1 ‘M’ in lead V6

52
Q

How are ventricular ectopics seen on ECG?

A

Early, broad complex QRS

53
Q

What is a normal PR interval?

A

3-5 small squares =

54
Q
A

ventricular fibrillation

55
Q

What is the definition of sinus rhythm on ECG?

A

P wave before every QRS

Nick's MD2 (21 decks)

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