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MD3001 : ECG Interpretation > other abnormalities > Flashcards

other abnormalities Flashcards

1
Q

Myocardial infarction ECG changes

A

t wave peaks followed by t wave inversion st segment elevation appearance of new Q waves

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2
Q

anterior MI

A

V1 - V6

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3
Q

lateral MI

A

leads I, AVL, V5 and V6

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4
Q

inferior MI

A

Leads II, III and AVF

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5
Q

posterior infarction

A

V1 (ST segment depression and tall R wave)

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6
Q

anterior infarction signs

A

sinus rhythm V2 - V4 Q waves V4-V6 inverted t waves

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7
Q

anterolateral infarction

A

sinus rhythm I, II AVL, V3-V5 Q waves V2-V6 have raised ST segments

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8
Q

inferior infarction signs

A

sinus rhythm III and AVF - Q waves AVL V6 - depressed ST segments

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9
Q

pulmonary embolism signs

A

I - large S III - Q wave III - inverted T wave

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10
Q

hyperkalaemia

A

tall tented t wave and wide QRS

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11
Q

hypokalaemia

A

small t wave and prominent U waves

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12
Q

hypercalcaemia

A

short QT interval

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13
Q

hypocalcamia

A

long QT interval, small T waves

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14
Q

einthovens labelling rules for the QRS complex

A

first positive R any negative before R is Q any negative following R is an S positive following S is known as R1 (r prime)

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15
Q
A

first degree block

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16
Q
A

2nd degree block (Mobitz 1 Wenckebach)

17
Q
A

mobitz II

18
Q
A

fixed ratio block - 3:1 block

this is a second degree heart block with fixed ratio of P waves: QRS complexes

19
Q
A

3rd degree heart block / complete heart block

20
Q

alternative ways to measure for left ventricular hypertrophy

A

sum of r wave in leads v5/v6 + S wave in V1 (sokolow-lyon criteria)

LVH > 35mm

21
Q

characteristics of RBBB?

A

V1 and V2 - QRS wide AND rabbit ears in V1 (rsR’)

22
Q

characteristics of LBBB?

A

W (v1) and M (v2)

23
Q

STEMI

A

ST evelvation - injury

T wave inversion - ischaemia

Q waves - dead tissue

Q waves are deep wide negative waves

24
Q

how to measure QTc?

A

Bazetts Formula

QTc = Qt/ square root of Rr

qt interval in seconds

rr interval in seconds

25
Q
A

MD3001 : ECG Interpretation (7 decks)

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