Brainscape's Knowledge GenomeTM

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


See full index

Paramedicine ECG/EKG > Quick Basics > Flashcards

Quick Basics Flashcards

1
Q

PR Interval Duration

A

Where: Start P-wave to start of Q/R

Time: 0.12 - 0.20 secs

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

QRS Complex Duration

A

Where: Start Q to end of S

Time: 0.08 - 0.10 secs

WIDE = 0.12 sec/120ms (LESS THAN 3 Small BOXES)

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

ST-Segment Duration

A

Where: End of S to the start of T

What: All the ventricular myocardium is depolarized

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

QT Interval Duration

A

Where: QT Interval

Time: 0.35 - 0.45 secs

QTc - (OT corrected)

  • Male > 0.46 sec abnormal
  • Female > 0.44 sec abnormal
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Inferior View of Heart

A

II

III

avF

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

Septal View of Heart

A

V1

V2

avR

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

Anterior View of Heart

A

V3

V4

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

Lateral View of Heart

A

I

avL

V5

V6

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

Absolute Refractory

A

Cells do not respond to any stimulus

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

Effective Refractory

A

Cells do not respond to conducted (cell-to-cell) stimuli, but will respond to other stimuli (cause arrhythmias)

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

Relative Refractory

A

Cells respond to LARGER-than-normal stimulus

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

Supernormal Refractory

A

Cells respond to weaker - than - normal stimulus

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

Big Box Duration

A

Width (time)

  • 5 mm = 0.20 seconds

Height (amplitude)

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

Small Box Duration

A

Width (time)

  • 1 mm = 0.04 seconds

Height (amplitude)

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

P-Wave

A

Atrial Depolarization

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

PR Segment

A

AV Node holding Action Potential from conducting

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

PR Interval

A

The time between atrial depolarization and ventricular depolarization

0.12 - 0.20 sec (>0.20 sec/200ms is considered delayed/prolonged)

Supraventricular activity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Q Wave

A

Basal Septum Depolarization

(0.04 sec or less)

19
Q

R Wave

A

Ventricular Depolarization

20
Q

S Wave

A

Basal Ventricular Depolarization

21
Q

ST Segment

A

Ventricles are positively charged and there is no movement of ions

22
Q

T Wave

A

Ventricular Repolarization

Ventricles are turning back to negative charges

23
Q

U Wave

A

Repolarization of the Purkinje Fibers

(Not normally seen)

24
Q

Origin of narrow (< 0.11 secs) QRS Complex

A

Supraventricular

25
Q

Narrow (normal) QRS Complex

A

0.08 - 0.11 seconds

(or less than 0.11)

26
Q

Wide QRS Complex

A

0.12 and above

27
Q

QT Interval

A

When: Beginning of the QRS Complex to the end of the T Wave

How Long: < 0.44

What: Covers the entire ventricular activity.

28
Q

Which Segment is used to determine if the ST segment is elevated or depressed?

A

TP Segment

29
Q

P wave begins and end at the ________

A

Isoelectric Line

30
Q

Q wave begins and end at the ________

A

Isoelectric Line

31
Q

R wave begins and ends at the ________

A

Isoelectric Line

32
Q

S wave begins and ends at the ________

A

Isoelectric Line

33
Q

ALL wave begins and ends at the ________

A

Isoelectric Line

34
Q

Q-Wave Morphology

q = _________

Q = _________

A

q = Physiologic

Q = PATHologic

35
Q

Q-Wave Morphology

Q = represents what pathology

A

Pathologic Q waves are a sign of previous myocardial infarction.

They are the result of the absence of electrical activity.

A myocardial infarction can be thought of as an electrical ‘hole’ as scar tissue is electrically dead and therefore results in pathologic Q waves.

36
Q

Q-Wave Morphology

Q = How do you recognize pathologic Q Wave?

A
  • > 0.04sec or 40 ms (1 mm) wide.
  • > 25% of depth of QRS complex.
  • Seen in leads V1-3.
37
Q

PR Interval Represents

A

Wave goes over the atrium and through the AV node and ends just before it activates the ventricles to depolarize

38
Q

PR segment represents

A

Depolarization of the AV node.

It’s a flat line because the wave is not strong enough to be recorded on the voltmeter.

39
Q

Q wave

A

Ventricular Septal Depolarization

40
Q

R wave

A

Resultant or major ventricular muscle depolarization. The resultant vector is directed downward and leftward.

41
Q

S Wave

A

Basal Ventricular depolarization

The base of the ventricles connects to the atria.

42
Q

ST segment

A

All the ventricular myocardium is depolarized.

43
Q

T wave represents

A

Ventricular repolarization

44
Q

QT interval

A
  • It covers the entire ventricular activity.
  • Captures the beginning of ventricular depolarization through the plateau phase to the ventricular repolarization.

Paramedicine ECG/EKG (11 decks)

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