ecg

Question 1

describe one big box of ecg

Answer 1

made up of 5 x 5 squares (5 mm)
width = time
Time whole strip = 0,2 seconds
So one small block = 0.04 seconds

length = voltage
whole length strip = 0,5 mV
so one small block = 0.1 mV

Question 2

How should the waveforms of limb leads look like?

Answer 2

lead I, II and III should have similar waveforms

Question 3

which part of the heart are each limb leads looking at?

Answer 3

Lead I = High lateral wall of the left ventricle

Lead II and III = Inferior wall of the heart ( Includes both right and left ventricles)

Question 4

How should Lead II and aVR waveform look like?

Answer 4

They should look like opposite waveform

Question 5

which limbs in Limb leads and Augmented limbs should look the same?

Answer 5

Lead I , II , III

+

aVL and aVF

Should look the same

Question 6

Which part of the heart are the Augmented limbs looking at?

Answer 6

aVR= Right Ventricle and Basal Septum

aVL= High Lateral wall of left ventricle

aVF= Inferior wall of the heart

Question 7

Combine together which part of the heart are the limb leads and augmented limbs looking at:

Answer 7

Lead I and aVL = High lateral wall of the left Ventricle

Lead II, III, and aVF = Looks at the inferior wall of the heart

Question 8

What happens to the R wave from V1 to V6?

Answer 8

R wave becomes bigger

Question 9

What happens to the S wave from V1 to V6?

Answer 9

S wave becomes smaller

Question 10

What part of the heart is V1 V2 and V3 looking at?

Answer 10

Right ventricle

Question 11

What part of the heart is V2 and V3 looking at?

Answer 11

Basal septum

Question 12

What part of the heart is V2, V3 and V4 looking at?

Answer 12

Anterior wall of the heart

Question 13

What part of the heart is V5 and V6 looking at?

Answer 13

Lateral wall of the left ventricle