Brainscape's Knowledge GenomeTM

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


See full index

Assessment Exam 1 > Basic EKG > Flashcards

Basic EKG Flashcards

1
Q

Define automaticity

A

The ability of the heart to generate its own spontaneous action potentials without any external stimuli

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

The pacemaker cells do not have a

A

Resting phase; once repolarization occurs, they are just slowly working on depolarizing again

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

Which cells make up 99% of the heart?

A

The contractile cells

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

In what order do electrolytes come into play during normal electrical conduction?

A

Fast na channels cause depolarization; Ca release inside the myocyte; K+ outflow to repolarize

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

Primary pacemaker?

A

The SA node

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

Where is the SA node located?

A

Back of the right atria near the superior vena cava entry

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

What is the function of Bachmann’s bundle?

A

Carries the electric impulse from the RA to the LA

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

What % of CO may be lost in afib?

A

20-25%

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

Afib atrial rate is _____ and ventricular rate is _____

A

100-300; 30-40

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

Intrinsic rate of AV node

A

40-60

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

Why is it important to have a delay at the AV node

A

To give time for the atria to contract before the ventricles and fill the ventricles with blood

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

How long does the AV node delay conduction?

A

0.1s

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

Another name for the bundle of His

A

AV bundle

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

Intrinsic rate of the bundle branches

A

20-40

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

Intrinsic rate of bundle of his

A

40-60

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

If you have a BBB you most likely also have

A

A decreased HR and BP

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

Intrinsic rate of Purkinje fibers

A

20-40

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

Agonal rate at Purkinje fibers

A

As low as 10-20

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

What area is most likely to take a hit with ischemia

A

Purkinje fibers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

A strip is typically

A

6s

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

One box on EKG paper is equivalent to

A

0.2s

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

P wave

A

Depolarization of atria

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

PR interval

A

Represents AV conduction

24
Q

QRS

A

Ventricle depolarization

25
Q

Normal PR interval

A

0.12-0.2s

26
Q

ST segment

A

Ventricular repolarization beginning

27
Q

P wave should be positive in what leads

A

I, II, aVF, V4-V6

28
Q

A retrograde P wave would indicate

A

A junctional rhythm; AV node firing

29
Q

Why is part of the PR interval flat?

A

No electrical activity; AV “pause”

30
Q

Duration of QRS complex

A

< 0.12s

31
Q

Suspect what if the QRS is wide

A

BBB

32
Q

What would be considered significant ST elevation in some facilities

A

1-2mm

33
Q

Which lead should the T wave be positive in

A

I, II, V3-V6

34
Q

Sinus tachycardia rate is typically

A

100-150

35
Q

What often happens to the P wave during SVT

A

It is covered by the T wave

36
Q

What speed does the EKG print out at

A

25 mm/s

37
Q

How could you identify a premature atrial contraction

A

Different heights of R waves with a normal QRS and long pause after shorter R wave

38
Q

Atrial flutter usually has a __ to __ atrial to ventricular rate

A

3 to 1 or 2 to 1

39
Q

Couplette

A

2 PVCs

40
Q

Triplette

A

3 PVCs

41
Q

1st degree AV block

A

Long PR interval; consistent

42
Q

2nd degree Type I heart block

A

Wenchebach; Longer long dropped QRS

43
Q

2nd degree Type II heart block

A

Mobitz; Marching, consistent P waves

44
Q

3rd degree AV black or complete heart blcok

A

Total disassociation of atria and ventricles

45
Q

“Normal” VTach rate

A

150-180

46
Q

Polymorphic VTach is also known as

A

Torsades

47
Q

Halothane and enflurane were known to cause

A

A sensitive myocardium

48
Q

Desflurane may cause what arrhythmia

A

Prolonged QT

49
Q

Spinal anesthesia or large amounts of local anesthesia can cause

A

Sympathetic block; vasodilation

50
Q

What can we give if we accidentally administer LA into the artery

A

Lipid rescue

51
Q

When we intubated we can put pressure on the vagus nerve causing

A

Bradycardia

52
Q

If we don’t anesthetize a patient well enough and stick a cold blade down their throat, we cause a

A

Sympathetic surge

53
Q

During a carotid or neck surgery we may worry about the surgeon stimulating? We may ask them to do what?

A

The carotid baroreceptors; use more local

54
Q

During insufflation what may occur?

A

Loss of venous return and a drop in BP

55
Q

Cervical or vaginal traction may cause

A

Bradycardia

56
Q

If we poke people in the eye while masking we may trigger

A

The oculo-cardiac reflex

Assessment Exam 1 (5 decks)

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