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Y1S2 > CLIN ECGs > Flashcards

CLIN ECGs Flashcards

1
Q

What leads are bipolar?

A

LI, II, III

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2
Q

List 12 ECG leads

A

6 limb leads (I, II, III) and 3 augmented limb leads (aVR, aVL, aVF) and 6 precordial leads (V1, V2 V3, V4, V5, V6).

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3
Q

LI heart view

A

Left lateral

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4
Q

aVL heart view

A

Left lateral

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5
Q

V5 heart view

A

Left lateral

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6
Q

V6 heart view

A

Left lateral

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7
Q

LII heart view

A

Inferior

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8
Q

LIII heart view

A

Inferior

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9
Q

aVF heart view

A

Inferior

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10
Q

V1 heart view

A

Anterior

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11
Q

V2 heart view

A

Anterior

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12
Q

V3 heart view

A

Anterior

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13
Q

V4 heart view

A

Anterior

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14
Q

sec small square

A

0.04s

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15
Q

sec large square

A

0.2s

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16
Q

Upward wave signifies

A

Depolarisation wave - moving towards +ve electrode.

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17
Q

Downward wave signifies

A

Depolarisation wave - moving away +ve electrode.

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18
Q

P wave

A

Atrial depolarisation/atrial systole

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19
Q

P wave 1st part

A

R atrium depolarisation

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20
Q

P wave 2nd part

A

L atrium depolarisation

21
Q

PR interval

A

Represents time from onset of atrial activation to onset of ventricular activation.

22
Q

QRS complex

A

Ventricular depolarisation/systole

23
Q

Q wave

A

Septal depolarisation

24
Q

R wave

A

Ventricular depolarisation

25
Q

S wave

A

Purkinje fibre depolarisation

26
Q

ST segment

A

Plateau phase of ventricular depolarisation

27
Q

T wave

A

Ventricular repolarisation/diastole

28
Q

QT interval

A

Interval from beginning of depolarisation to the end of repolarisation

29
Q

U wave

A

Late repolarisation of the Purkinje fibres @ ventricles

30
Q

Consistently long PR interval indicates…

A

First degree AV block

31
Q

Gradually lengthening PR interval until absent QRS complex indicates…

A

T1 second-degree AV block

32
Q

QRS absent without lengthening indicates…

A

T2 second-degree AV block

33
Q

QRS consistently absent indicates

A

Third degree AV block

34
Q

Rate calculation process for regular rhythm

A

300/big squares
1500/small squares

35
Q

Rate calculation process for irregular rhythm

A

1500/big squares btw 6 x R waves

36
Q

Regularly irregular saw-tooth appearance ECG indicates

A

Atrial flutter

37
Q

Regularly irregular with affected P waves on ECG indicates

A

Atrial ectopic

38
Q

Regular irregular with affected QRS complex on ECG indicates

A

Ventricular ectopic

39
Q

Irregularly irregular w/out P waves on ECG indicates

A

AF/VF

40
Q

Electrical axis combinations

A

o QRS positive in L1 and in aVF (normal axis)
o QRS positive in L1, negative in aVF and positive in L2 (normal axis)
o QRS positive in L1, negative in aVF and negative in L2 (left axis deviation)
o QRS negative in L1 and positive in aVF (right axis deviation)
o QRS negative in L1 and negative in aVF (North-West/No man’s land)

41
Q

Tall P wave on ECG indicates

A

R atrial hypertrophy

42
Q

Wide/notched P wave indicates

A

L atrial hypertrophy

43
Q

Pathologically deep Q waves on ECG indicates…

A

Hx MI

44
Q

ST elevation indicates…

A

Acute MI

45
Q

M shaped R waves in V1, V2 on ECG indicates…

A

RBBB

46
Q

M shaped R waves in V5, V6 on ECG indicates…

A

LBBB

47
Q

ECG findings consistent with left ventricular hypertrophy

A

(S wave depth in V1 or V2 + R wave height in V5 or V6 > 35mm /7 big squares)

48
Q

ECG findings consistent with right ventricular hypertrophy

A

(R wave height in V1 + S wave depth in V5 or V6 > 10 mm/2 big squares)

49
Q

Inverted T wave on ECG indicates…

A

Ischaemia

Y1S2 (63 decks)

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