ECG

Question 1

What are the waves on an ECG?

Answer 1

P
QRS
T

Question 2

What does the P wave stand for?

Answer 2

Atrial systole / depolarization

Question 3

What does QRS complex stand for?

Answer 3

Ventricular systole / depolarization
Isovolemic contraction and ejection
Atrial repolarisation

Question 4

What does T wave stand for?

Answer 4

Ventricular repolarisation

Question 5

What does each big and mini square on an ECG represent?

Answer 5

Big square = 0.2s, 200ms

Mini square = 0.04s, 40ms

Question 6

How many ms is the p wave?

Answer 6

80 - 100 ms

Question 7

How many ms is the PR interval (start of P to start of QRS)?

Answer 7

120 - 200 ms

Question 8

How many ms is the QRS phase?

Answer 8

60 - 100 ms

Question 9

What is Bradycardia?

Answer 9

Decreased heart rate

<60bpm

Question 10

What is Tachycardia?

Answer 10

Increased heart rate

>100bpm