ECG's

Question 1

What does an ECG stand for?

Answer 1

Electrocardiograms

Question 2

How are ECG’s produced?

Answer 2

Using a electrocardiograph

Question 3

What is an electrocardiograph?

Answer 3

A machine that records the electrical activity of the heart

Question 4

What do the distinctive trace on ECG’s represent?

Answer 4

Atrial and Ventricle Systole and Diastole

Question 5

What does the P wave represent?

Answer 5

Atrial Systole or Depolarisation of the Atria

Question 6

What does the QRS complex represent?

Answer 6

Ventricular systole or Depolarisation of Ventricles

Question 7

What does the T wave represent?

Answer 7

Ventricular diastole or Repolarisation of Ventricles

Question 8

What does it mean if the P and R wave is bigger/higher?

Answer 8

The stronger the contraction

Question 9

Where is one full heartbeat on an ECG?

Answer 9

Just after 1st P ends to the start of 2nd P

Question 10

What can we use ECG’s to calculate?

Answer 10

Heart Rate

Question 11

What equation can we use of calculate heart rate?

Answer 11

HR=60/time for 1 beat

Question 12

How can heart problems be diagnosed?

Answer 12

By comparing a patients ECG with a normal ECG

Question 13

What is Tachycardia?

Answer 13

When heart rate is too fast (>100 bpm at rest)

Question 14

What happens in Tachycardia?

Answer 14

The atria start to contract before they have filled with blood so insufficient blood is pumper into the ventricles and out of the heart

Question 15

What is Bradycardia?

Answer 15

When heart rate is too slow (<50 bpm at rest)

Question 16

What happens in Bradycardia?

Answer 16

Insufficient blood is pumper out of the heart

Question 17

What does Bradycardia usually indicate an issue with?

Answer 17

A problem with the electrical activity of the heart

Question 18

What is Ectopic Heartbeat?

Answer 18

When the atria or ventricles contract earlier than they should so don’t have time to fill with blood before they contract

Question 19

What is Atrial Fibrillation?

Answer 19

Where there are no distinct P waves-many weak/irregular atrial contractions

Question 20

What happens in Atrial Fibrillation?

Answer 20

Less blood is pumped into the ventricles so even though the ventricles contract insufficient blood is pumped out of the heart

Question 21

What is Ventricular Fibrillation?

Answer 21

Where there are no clear QRS complex or T waves

Question 22

What happens in Ventricular Fibrillation?

Answer 22

Hardly any blood is being pumped out of the ventricles/heart-serious medical emergency

Question 23

What is Asystole?

Answer 23

No heartbeat=death