Practical 5: ECG and the anatomy of the heart

Question 1

How must the subject be positioned to take control heart rate measurements

Answer 1

• lying down- relaxed

Question 2

what part of the stethoscope is used to take control HR measurements?

Answer 2

diaphragm

Question 3

which regions of the chest wall are listened to? (5)

Answer 3

aortic, sternal angle, pulmonary, mitral, tricuspid

Question 4

How many connections are used for the ECG?

Answer 4

3

Question 5

where are the 3 connections of the ECG placed?

Answer 5

Right arm, Left arm, Left leg

Question 6

where is the ground connection placed?

Answer 6

right leg

Question 7

what do the pairs of electrodes constitute?

Answer 7

a lead

Question 8

what are the standard bipolar leads- 1-3?

Answer 8

RA-LA (lead 1)
RA- LL (lead 2)
LA- LL (lead 3)

Question 9

what does the initial P-wave of an ECG show?

Answer 9

spread of depolarisation across the atria

Question 10

what does the QRS compex show?

Answer 10

spread of depolarisation across the ventricles

Question 11

what does the T-wave show?

Answer 11

ventricular repolarisation spread