ECG Workshop

Question 1

how many electrodes form a 12 lead ECG?

Answer 1

10

Question 2

how many electrodes go on the chest?

Answer 2

6

Question 3

where are V1 and 2 located on ECG?

Answer 3

4th intercostal space at each sternal border

Question 4

what limbs are used for ecg?

Answer 4

RA
LA
RL

Question 5

what is V3 used for in ECG?

Answer 5

V2-4

Question 6

where is V4 placed in ECG?

Answer 6

5th intercostal space midclavicular line

Question 7

leads are placed on the inner/outer aspect of the limb

Answer 7

inner

Question 8

lead 1 measures

Answer 8

RA-LA

Question 9

recording electrode for lead 1 is…

Answer 9

LA

Question 10

lead 2 is..

Answer 10

right arm to left leg

Question 11

recording electrode for lead 2 is…

Answer 11

left leg

Question 12

lead 3 is..

Answer 12

LA to LL

Question 13

recording electrode for lead 3 is…

Answer 13

LL

Question 14

name the 6 chest leads

Answer 14

1, 2, 3

avL, avF, avR

Question 15

name the anterior ECG leads

Answer 15

V3-4

Question 16

name the septal ECG leads

Answer 16

V1-2

Question 17

name the lateral ECG leads

Answer 17

1, avL, V5, V6

Question 18

calibration of an ECG?

Answer 18

25mm/s

Question 19

how many large boxes are there per second on an ECG?

Answer 19

5 boxes

Question 20

a large box equates to how many seconds?

Answer 20

0.4s

Question 21

what is the normal electrical axis of the heart

Answer 21

+90 to -30

Question 22

the axis is normal if what axes are upright?

Answer 22

1 and avF

Question 23

what will leads 1 and avF look like in left axis deviation?

Answer 23

1 positive

avF negative

Question 24

what will leads 1 and avF look like in right axis deviation

Answer 24

1 negative

avF positive

Question 25

how can you work out if an ECG is irregular in rhythm?

Answer 25

if there is uneven space between each QRS complex

Question 26

how to work out an irregular heart rate on ECG

Answer 26

no. of QRS complexes in 30 boxes x 10

Question 27

how to work out normal HR on ECG

Answer 27

no. of large boxes between 2 QRS complexes, divide this by 300

Question 28

how to work out normal HR on ECG

Answer 28

300 / no. of large boxes between 2 QRS complexes

Question 29

QRS should be shorter than…

Answer 29

<0.1secs

<2-3 small squares

Question 30

how to introduce an ECG?

Answer 30

ECG of (patient name, DOB) taken at (date, time), calibration

Question 31

how should you describe an ECG?

Answer 31

is electrical activity present?
rhythm irregular or regualar
rate
p waves present?
each p wave followed by QRS
changes to QRS/ST wave?

Question 32

how should you describe an ECG?

Answer 32

is electrical activity present?
rhythm irregular or regular
rate
p waves present?
each p wave followed by QRS
changes to QRS/ST wave?

Question 33

describe mobitz 1

Answer 33

progressive prolongation of the PR interval until you get a dropped beat

Question 34

describe mobitz 2

Answer 34

normal PR interval length but some arent followed by a QRS complex

Question 35

Tx mobitz 1

Answer 35

mostly conservative

Question 36

Tx mobitz 2

Answer 36

pacemaker

Question 37

why can you get chest pain in tachycardia?

Answer 37

myocardium is perfused during diastole

Question 38

adenosine works on the __ node

Answer 38

AV

Question 39

ST depression is a sign of…

Answer 39

myocardial ischaemia