Ecg

Question 1

What do you call an upward reflection from the baseline

Answer 1

Positive

Question 2

What is a negative deflection?

Answer 2

A downward waveform on an ecg baseline

Question 3

What is the maximun number of deflections from an ecg baseline?

Answer 3

5

Question 4

Name the 5 ecg deflections in chronological order

Answer 4

P QRS T

Question 5

One deflection represents…

Answer 5

Either activation, depolarization of myocardial cells or repolarization of electrical charge

Question 6

What is the ratio between a p wave and a qrs complex in a normal sinus rhythm?

Answer 6

1:1

Question 7

What deflection shows depolarization of the Atria

Answer 7

P wave

Question 8

What does a p wave show?

Answer 8

Depolarization of the atria

Question 9

What is the PR section?

Answer 9

The flat line between the P wave and the QRS complex

Question 10

What is the PR interval?

Answer 10

The interval from the start if the P wave to the end of the PR segment

Question 11

What do we call the ECG recording of depolarizing the ventricles?

Answer 11

The QRS complex?

Question 12

What is a Q wave?

Answer 12

The first downward deflections, if there is any

Question 13

What is an R wave?

Answer 13

The first upward defelction following a downward deflection

Question 14

What is an S wave?

Answer 14

The first downward wave following an upward deflection

Question 15

What is an ST segment?

Answer 15

The pause (flat line) between the S and the T waves

Question 16

What is a T wave?

Answer 16

The last deflection in the cardiac cycle. It represents the repolarisation of ventricles