ECG

Question 1

what can cause a prolonged QTC

Answer 1

hereditary 
myocarditis 
bradycardia 
head injury
hypothermia
U and E imbalance
hypothyroidism
drugs
acute myocardial ischaemia

Question 2

hypercalcaemia

Answer 2

short QT interval

Question 3

hypocalcaemia

Answer 3

long QT interval

small T waves

Question 4

what is the height of a normal T wave

Answer 4

one third to two thirds that of the corresponding R wave

Question 5

hyperkalaemia

Answer 5

tall t waves
Arrhythmias
prolonged PR
widened QRS

Question 6

hypokalaemia

Answer 6

flattened T wave
depressed ST
prolonged QT
arrhythmia

Question 7

what is an inferior infarction

Answer 7

right coronary artery (2,3 aVf)

Question 8

what is an anterior infarction

Answer 8

LAD (v2-5)

Question 9

what is a lateral infarction

Answer 9

circumflex artery obstruction

V5,6, 1 and AvL

Question 10

what is a pathological Q wave

Answer 10

more than 1 small square in width

more than 2 small sqs in depth

Question 11

what are the features of a STEMI

Answer 11

ST elevation
T wave inversion
pathological Q waves

Question 12

what troponin level indicates MI

Answer 12

14-99

Question 13

what does an LBBB look like

Answer 13

M shaped R waves

Question 14

what does an RBBB look like

Answer 14

rabbit ears in V1

Question 15

what are einthovens rules

Answer 15

first positive is an R
any negative preceding R is a Q
any negative following R is an S
and further positive is R’

Question 16

aVR

Answer 16

-150

Question 17

AVL

Answer 17

-30

Question 18

1

Answer 18

0

Question 19

2

Answer 19

+60

Question 20

3

Answer 20

+120

Question 21

AVF

Answer 21

+90