Brainscape's Knowledge GenomeTM

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


See full index

Cardiovascular block > A first look at the ECG > Flashcards

A first look at the ECG Flashcards

1
Q

What plane do standard limb leads look at?

A

vertical/frontal

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

What does an approaching wave of depolarisation cause on the ECG?

A

An upward going blip

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

Are fast or slow events transmitted better?

A

Fast

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

What is the P wave caused by?

A

Atrial depolarisation

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

What is the QRS complex caused by?

A

ventricular depolarisation

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

What is the T wave caused by?

A

ventricular repolarisation

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

What is the PR interval?

A

time from atrial depolarisation to ventricular depolarisation

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

How long does the PR interval last?

A

0.1-0.2 seconds

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

What is the PR interval transmitted through and how does this affect the time?

A

The AV node which is the delay box and why it is the slowest part of the process

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

What is the QRS interval?

A

Time for the whole of the ventricle to depolarise

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

How long does the QRS wave last?

A

0.008 seconds

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

What is the QT interval?

A

Time spent while ventricles are depolarised

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

What does the QT interval vary with?

A

heart rate

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

What is the normal QT interval at 60bpm?

A

0.42 seconds

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

Why is atrial repolarisation not seen on the ECG?

A

Coincides with ventricular depolarisation which involves more tissue and swamps the signal from the atria

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What things can cause axis deviation?

A

heart rotated to left
hypertrophy on left
atrophy on right

17
Q

What extra information can augmented lead limbs give you?

A

An extra 3 perspectives

18
Q

What plane do the precordial leads look at?

A

Transverse plane

19
Q

What are the 2 ways to determine heart rate from an ECG?

A

Measure RR interval and work out how many occur in 60 seconds
Better one is to count the R waves in 6 seconds and multiply by 10

20
Q

What is normal sinus rhythm?

A

60-100 bpm

21
Q

What is bradycardia?

A

below 60bpm

22
Q

What is tachycardia?

A

above 60bpm

23
Q

What is STEMI?

A

ST elevated myocardial infarction

24
Q

What is NSTEMI?

A

Non ST elevated myocardial infarction

25
Q

Is STEMI or NSTEMI worse?

A

STEMI

Cardiovascular block (6 decks)

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