Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

ECG Interpretation > Basics of ECG > Flashcards

Basics of ECG Flashcards

1
Q

Which part of the conduction cycle does the P wave represent on an ECG?

A

Atrial depolarisation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Which part of the conduction cycle does the QRS complex represent on an ECG?

A

Ventricular depolarisation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Which part of the conduction cycle does the PR interval represent on an ECG?

A

Delay through the AV node

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Which part of the conduction cycle does the T wave represent on an ECG?

A

Ventricular depolarisation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

A positive deflection on ECG indicates that electricity in travel in which direction with respect to that lead?

A

Towards the lead

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

A negative deflection on ECG indicates that electricity in travel in which direction with respect to that lead?

A

Away from the lead

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is the normal duration of the QRS complex on ECG?

A

<120ms

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is the normal duration of the PR interval on ECG?

A

120-200ms

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Which interval on ECG requires correction for heart rate in order to interpret it properly?

A

QT interval

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

How long would a QT interval have to be on ECG for it to be considered prolonged?

A

> 450ms

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Why is a prolonged QT interval on ECG significant?

A

It can predispose the cardiac rhythm to change into a ventricular tachycardia which may result in cardiac arrest

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Which interval on ECG is used to determine heart rate?

A

RR interval

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

How can heart rate be calculated on ECG when there is a normal rhythm?

A

300 / number of large squares between R waves

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

How can heart rate be calculated on ECG when there is an abnormal rhythm?

A

Number of R waves present in rhythm strip x 6

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What are the names of the three chest leads on ECG?

A 
V1
V2
V3
V4
V5
V6
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What are the names of the three limb leads on ECG?

A

I
II
III

17
Q

What are the names of the three augmented leads on ECG?

A

aVL
aVF
aVR

18
Q

Which ECG leads form a coronal view of the heart?

A 
aVL
aVF
aVR
I
II
III
19
Q

Which ECG leads form a transverse view of the heart?

A

V1-6

20
Q

Which ECG lead points towards 0 degrees on the cardiac axis?

A

I

21
Q

Which ECG lead points towards +60 degrees on the cardiac axis?

A

II

22
Q

Which ECG lead points towards +90 degrees on the cardiac axis?

A

aVF

23
Q

Which ECG lead points towards +120 degrees on the cardiac axis?

A

III

24
Q

Which ECG lead points towards -150 degrees on the cardiac axis?

A

aVR

25
Q

Which ECG lead points towards -30 degrees on the cardiac axis?

A

aVL

26
Q

Which ECG leads show an inferior view of the heart?

A

II, III, aVF

27
Q

Which ECG leads show an anteroseptal view of the heart?

A

V1-4

28
Q

Which ECG leads show an lateral view of the heart?

A

I
aVL
V5
V6

29
Q

Where should the normal transition zone for R wave progression on ECG be?

A

leads. V3/4

30
Q

Between which degrees should the normal cardiac axis lie?

A

-30 and +90 degrees

31
Q

What are the signs of right axis deviation on ECG?

A

QRS complex is negative in lead I and positive in lead II

32
Q

What pathology can cause right axis deviation?

A

Right ventricular hypertrophy

Left sided dysfunction

33
Q

When might right axis deviation be normal?

A

In tall, thin individuals

34
Q

What pathology can cause left axis deviation?

A

Left ventricular hypertrophy

Right sided dysfunction

35
Q

What are the signs of left axis deviation on ECG?

A

QRS complex is positive in lead I and negative in lead II

36
Q

In which ECG leads can it be normal to see a Q wave?

A 
V5
V6
I
aVL
i.e. the lateral leads

ECG Interpretation (1 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions