week 4 - 8 presemester

Question 1

what is a P wave

Answer 1

atrial depolarisation. increased P wave - hypokalemia

decreased P wave - hyperkalemia

Question 2

What is a PP interval

Answer 2

the space between consecutive P wave

Question 3

What is a PR interval

Answer 3

the time between first deflection of P wave and first deflection of QRS complex (identifies Pathology of AV node)

Question 4

What is a QRS complex

Answer 4

ventricular depolarization

Question 5

what is a QT interval

Answer 5

the measurement between the start of the QRS complex and the end of the T wave. This indicates the time it takes depolarise and repolarise

Question 6

What is a RR interval

Answer 6

time between each R wave (in QRS) and used to calculate the heart rate

Question 7

What is a ST segment

Answer 7

The time between end of QRS and beginning of T wave, it reflects the period of zero potential

Question 8

What is a T wave

Answer 8

ventricular repolarisation

Question 9

identify V1

Answer 9

4th intercostal space, right sternal boarder

Question 10

identify V2

Answer 10

4th intercostal space, left sternal boarder

Question 11

identify V3

Answer 11

5th intercostal space, left sternal border

Question 12

identify V4

Answer 12

5th intercostal space, left midclavicular line

Question 13

identify V5

Answer 13

5th intercostal space, left anterior axillary line

Question 14

indentify v6

Answer 14

5th intercostal space, left mid-axillary line

Question 15

describe any precautions you need to make when attaching an ECG

Answer 15

take off jewellery, ensure muscles are relaxed, clothing waist up removed, electrodes are accurately placed, privacy