ECG

Question 1

where should V1 be placed

Answer 1

right sternal edge, 4th intercostal space

Question 2

V2

Answer 2

left sternal edge, 4th intercostal space

Question 3

V3

Answer 3

halfway between V2 and V4

Question 4

V4

Answer 4

apex beat 5th intercostal space, mid clavicular line

Question 5

V5

Answer 5

anterior axillary line - in line with V4

Question 6

V6

Answer 6

mid axillary line - in line with V4 and 5

Question 7

WPW

Answer 7

broad QRS with slurred upstroke on R wave (delta wave)

Question 8

hyperkalaemia

Answer 8

tall tented T waves and prominent U waves wide QRS

Question 9

hypokalaemia

Answer 9

flattened T waves, prominent U waves

Question 10

LA hypertrophy

Answer 10

bifid P wave

Question 11

RA hypertrophy

Answer 11

prominent P wave

Question 12

HR

Answer 12

300/no large squares between each R-R interval or between beats

Question 13

what is the time interval of one small square and one large square

Answer 13

one small = 0.04mm

large = 0.2mm

Question 14

irregular HR

Answer 14

no QRS in 30 large squares x 10

Question 15

II, III and aVF

Answer 15

inferior R coronary

Question 16

V2-V4

Answer 16

anterior LAD

Question 17

V1-V4

Answer 17

anteroseptal LAD

Question 18

anterolateral

Answer 18

LAD

1, aVL, V2-6

Question 19

ST and T wave changes but not q waves

Answer 19

subendocardial infarct - NSTEMI

Question 20

reciprocal changes in V1 and V2

Answer 20

posterior L circumflex and R coronary

Question 21

normal P wave duration

Answer 21

0.08-0.1 seconds

Question 22

what does the PR interval represent

Answer 22

AV nodal delay

0.12-0.2 sec

Question 23

Answer 23

atrial flutter

sawtooth baseline due to high frequency atrial impulses (F waves)

regular rhythm

Question 24

Answer 24

atrial fibrillation

no visible atrial waves

irregularly irregular QRS pattern

Question 25

Answer 25

LA hypertrophy

Question 26

Answer 26

hyperkalaemia

Question 27

Answer 27

hypokalaemia

Question 28

Answer 28

torsade de pointes treat with Mg sulphate

Question 29

Answer 29

ventricular tachy

Question 30

Answer 30

SV tachy

Question 31

causes of ST depression

Answer 31

subendocardial infarct - non full thickness myocaridal ischaemia (NSTEMI)

Question 33

draw the limb leads

Answer 33

Lead 1: RA to LA Lead 2: RA to LL Lead 3: LA to LL

Question 34

QRS complex duration

Answer 34

\<0.1 second

Question 35

inferior

Answer 35

II, III, AvF

Question 36

anterior

Answer 36

V2-6

Question 37

anterolateral

Answer 37

V4-6, I, AvL

Question 38

anteroseptal

Answer 38

V2-4