ECGs

Question 1

What do each of these leads show supply to, label the table

Answer 1

Question 2

Label what artery is responsible for each part of the ECG

Answer 2

Question 3

Answer 3

Sinus rhythm 85bpm

1st degree heart block as PR segments are over 200ms

STEMI in inferior circulation
ST elevation in II,III,aVF

RCA or circumflex

Question 4

Answer 4

Extremely slow, under 40bpm

Ventricular rhythm

Question 5

Hypokalaemia vs Hyperkalaemia

Answer 5

Question 6

Answer 6

Hypokalaemia

May be caused by diuretics such as furosemide or bumetanide

Question 7

Answer 7

NSTEMI

ST depression in V2-6 and I,II and aVF

Left coronary artery occlusion

Question 8

Answer 8

Sinus bradycardia

40bpm

Not ventricular rhythm as its got normal QRS complexes

Very long QT interval, risk of Torsade de pointes

Question 9

Answer 9

Torsade de pointes

Caused by severe hypokalaemia

Question 10

Answer 10

Acute pericarditis

ST elevation with saddle-shape

Pericarditis does not release troponins as there is no ischaemia

Question 11

Answer 11

STEMI

ST elevation in I and aVL
ST depression in reciprocal leads II,III and aVF

Occluded LAD

Question 12

Answer 12

Second degree AV block Mobitz I

Progressive PR prolongation

Question 13

Answer 13

Flecainide flutter

Rhythms which may not usually be transmitted via the fast conduction system can be with flecainide

Question 14

Answer 14

Second degree AV block, Mobitz type 1

Progressive PR lengthening

Question 15

Answer 15

Second degree AV block Mobitz Type 2

QRS suddenly dropped

Question 16

Answer 16

Atrial Fibrillation

No P wave, irregularly irregular QRS firing

QRS complex is normal

Question 17

Answer 17

Ventricular Fibrillation

No co-ordination at all

Question 18

Answer 18

Hyperkalaemia

Question 19

Signs of LBBB

Answer 19

W in V1
M in V6

Question 20

Sits of RBBB

Answer 20

M shaped in V1-3
W shape in V6