ECG

Question 1

P waves inverted

Answer 1

Electrodes wrong position
Dextrocardia
Atrial ectopics/ AV junctional rhythms
Retrogradely conducted VT/ectopics

Question 2

Tall P waves

Answer 2

P pulmonale

Right atrial enlargement
Pulm Ht 2’ to pulm or tc stenosis/ lung disease

Question 3

Broad, bifid P waves

Answer 3

P mitrale
> 0.08

Left atrial enlargement 2’ to mitral valve disease

CXR, ECG, ECHO

Question 4

3 rules of PR interval

Answer 4

Consistent

Not > 0.20

Question 5

PR

Answer 5

AV junc’ rhythm
WPW
LGL

Question 6

PR > 0.20

Answer 6

First degree heart block

Ischaemic heart disease
Hypokalaemia 
Rheumatic dis 
Lyme dis
Drugs = digox, quinidine, BB, CCB

Question 7

PR varies

Answer 7

2nd degree heart block

Mobitz type 1 (lenghtens)
Mobitz type 2 (skips, no warning)
2:1 AV block

Question 8

3rd degree heart block

Answer 8

No relationship between atria and ventricles

Question 9

Q waves normal in

Answer 9

Left sided leads

I,II, aVL, V5, V6

Question 10

Path Q waves in

Answer 10

MI

LV HT

Question 11

Right axis deviation

Answer 11

+90 to +150

RVH
WPW
Anterolateral MI
Dextrocardia 
Left post hemiblock

Question 12

Left axis deviation

Answer 12

-30 -90

Left anterior hemiblock/bifascicular/tri
WPW
Inf MI
VT