ECG

Question 1

What should be done first?

Answer 1

Clean hands
Introduction
Explanation and consent
Ensure patient is comfortable

Question 2

What should be made sure of regarding the machine before starting

Answer 2

Plugged into mains

Untangle wires

Question 3

Where should the limb leads be attached?

Answer 3

On the inside of wrists and ankles

Question 4

Where do the precordial limb leads go?

Answer 4

V1 - 4th intercostal space right side

V2 - 4th intercostal space left side

V3 - inbetween V2 and V4

V4 - 5th intercostal space mid clav line (apex beat)

V5 - same level as lead V4 on the anterior mix-auxiliary
line

V6 - same level as V4 and V5 on the mid auxiliary line

Question 5

From right arm - left arm - left leg - right leg what colour leads go to these?

Answer 5

Ride - Your - Green - Bike

Red - Yellow - Green - Black

Question 6

.What should be done once all leads are attached

Answer 6

Ask patient to remain very still

Print the ECG

Question 7

What does ARI BAR stand for?

Answer 7

Any electrical activity
Rate
Irregular or regular rhythm

Broad or narrow QRS
Atrial presence
Atrial relationship to ventricular activity

Question 8

How do we calculate a rate?

Answer 8

Counting number of large squared between two QRS complex peaks and dividing that into 300

Counting number of peaks in 30 squared and times this by 10

Question 9

How many seconds does one large box show?

How many seconds does one small box show?

Answer 9

0. 20s

0. 04s

Question 10

When does a QRS complex become broad?

Answer 10

If over 0.12s - 3 small squares

Count from Q to S

Question 11

How do we assess the relationship between atria and ventricles ?

Answer 11

Is every P wave followed by a QRS complex and vice versa

What is the PR interval? - Should be 0.12 - 0.20s - 3-5 small squares