Brainscape's Knowledge GenomeTM

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


See full index

CP Exam 2 > ECG Information > Flashcards

ECG Information Flashcards

1
Q

How long should be PR interval be?

A

.12-.2 seconds

(3-5 small squares)

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

How long should the QRS complex be?

A

0.05- 0.1 seconds

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

QRS complex longer than .12

A

Bundle branch block

Ventricular hypertrophy

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

Q wave should be how long?

A

0.03 (about 1 small square wide)

or 1/3 tall of the entire QRS complex

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

QT interval should be how long?

A

From the begining of the QRS–> end of T

0.35 seconds

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

A short PR interval indicates what?

A
  1. WBW dz
  2. Levines
  3. Glycogen storing dz
  4. HTN
  5. Junctional/nodal rhythms
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

A long PR interval can indicate?

A
  1. AV block (because this is the time it takes to get from the SA node through the AV node)
  2. Hyperthyroidism
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

During diastole, what is happening

A

Ventricle relaxing

Atria contracting

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

During systole, what is happening?

A

Ventricle is contracting

Atria is relaxing

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

Stages of cardiac cycle

A
  1. Atrial systole
  2. Isvolumetric ventricular contraction
  3. Ventricular ejection
  4. Isovolumetric ventricular relaxation
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What stages in cardiac cyle are we in during QRS?

A
  1. Atrial systole
  2. Isovolumetric ventricular contraction
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Why are we in isovolumetric relaxation during the last part of T wave?

A

Because our cells that are the 1st to depolarize are the last to repolarize

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

End of QRS interval begins what?

A

Ventricular ejection

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

How do we find the degree of axis?

A
  1. Find the area that the QRS wave cancels out.
  2. Go to the axis of deviation and find the one that is perpendicular
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Movement of ST segment tells us what?

A

ventricular myocytes are not depolarizing at the same time and we cannot reach an isoelectric point

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

ST depression

A

subendocardial infarction

17
Q

ST elecation

A

subepicardial or transmiral ischemia

18
Q

What represeents the length of ventricular systole on ECG?

A

QT interval

19
Q

QT interval can tell us what?

A
  1. Mycardial ischemia (T wave)
  2. Myocardiac injury (ST segment)
  3. Myocardial infarction (Q wave)
20
Q

PR segment tells us what

A

Time to go from AV node–> ventricles

21
Q

If P wave occurs after QRS?

A

1. SVT

2. Junctional rhythm

3. Change side of pacemaker

22
Q

Why is repolarization upward deflected?

A

It moves away from the lead

23
Q

QRS assignments

A

Q- first negative defletion BEFORE R

R- first upward deflection

S- negative deflection after the R

24
Q

What do we use on the ECG to tell us heart rate and rhythm?

A

Rhythmic lead II at the bottom

25
Q

When we describe an area of infarct, what part of the heart are we referring to?

A

LV

26
Q

Injury–>

A

elevated ST

27
Q

Infarction

A

Deep and wide Q, more than 1 square wide

28
Q

Anginga

A

only an inverted T wave

29
Q

How to find a STEMI

A

Look at all the leads except aVR.

  1. Look for a deep Q wave
  2. Look at the ST segment to tell us if acute or not. It is the first sign of an MI and returns to baseline with time.
  3. Look for an inverted T wave
30
Q

How can we spot the difference between a anterior and posterior acute MI?

Subendocardial infarction?

A

Anterior acute MI- a significant Q wave and a ST elevation in V1 and V2

  • Posterior acute MI would have the opposite effects because they depolarize in opposite directions
  • Large R wave in V1 and V2
  • ST depression

—–if only ST depression–> subendocardial infarction

-

31
Q

1 AV block

A

Delay between the atrial and ventricular depolarization is lengthened (PR interval= >/2 seconds)

remains consistently prolonged

32
Q

2 AV block

A

Some P waves send signals to ventricles, while smoe atrial depolariations are blocked, leacing long P waves without a QRS

2 types

Type 1–> Wenckenback

Type 2–> Morbitz

33
Q

Type 1

2 AV Block

A

QRS looks normal

One less QRS than P wave because the PR interval lengthns but last one does not go to ventricle

34
Q

Type 2 2 AV block (morbitz)

A

3: 1
4: 1
5: 1

35
Q

How to determine what kind of block

A
  1. Look at PR interval:

is it long and stay the same length? Yes–> 1 degree

Gets longer? Yes–.> 2 degree

36
Q
A

CP Exam 2 (27 decks)

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