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Respiratory - Semester I > Unit 5 > Flashcards

Unit 5 Flashcards

1
Q

Normal QRS is ____ seconds

A

0.04 - 0.12

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2
Q

Normal PR interval is ____ seconds

A

0.12 - 0.20

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3
Q

What wave represents ventricular depolarization?

A

T wave

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4
Q

Ischemia is noted on an EKG by the presence of:

A

ST depression

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5
Q

What are the characteristics of a sinus rhythm

A

Has a P wave, originates in atria, has a regular rhythm,

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6
Q

Why is atropine given?

A

Increase heart rate

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7
Q

What drug is given to treat the excitability of ectopic foci (ex. PVC)?

A

Lidocaine

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8
Q

In children (1-8 years) bradycardia occurs at a rate of less than ____ bpm

A

80 bpm

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9
Q

Which of the following delivered energy settings should the respiratory therapy practitioner recommend for initial attempts at defibrillation when performed on an adult patient?

A

200 joules

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10
Q

During synchronized cardioversion, the defibrillator will discharge on the ____ wave

A

R

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11
Q

The immediate and only effective treatment of ventricular fibrillation is _____

A

Defibrillation

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12
Q

Hypoxemia such as in a COPD patient would most likely cause what rhythm?

A

PVC

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13
Q

The ability of cardiac muscles to respond to an electrical stimulus by physically contracting

A

Contractility

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14
Q

The ability of all cardiac cells to conduct electrical impulses from one group of cells to another in any pathway or direction

A

Conductivity

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15
Q

A basic rate and rhythm assigned to a specific group of cardiac cells

A

Rhythmicity

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16
Q

The excitability of the cardiac cell

A

Irritability

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17
Q

The ability of each cardiac cell to automatically initiate an electrical event

A

Automaticity

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18
Q

List the 5 cardiac properties

A

Automaticity, Irritability, rhythmicity, conductivity, and contractility

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19
Q

If there is a conduction defect from the A-V node to the Bundle of His what would you see?

A

Long PR interval

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20
Q

A short run of V-tach occurs with ____ PVC’s

A

3

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21
Q

A “u” wave represents___

A

Hypokalemia

22
Q

When could you use Synchronized cardioversion?

A

To treat PAT, SVT, A-fib, A-flutter, and V-tach

23
Q

What is the unique characteristics that occurs with a BBB (Bundle Branch Block)?

A

There is a notch in the QRS complex

24
Q

Where is the tricuspid valve located?

A

Between the right ventricle and right atrium

25
Q

What causes CHF to occur?

A

Coronary artery disease or anything that causes left ventricle to inadequately pump

26
Q

During defibrillation and cardioversion, the paddles are placed on the ___ lateral chest and the ___ apex

A

Left, right

27
Q

R on T phenomenon results in _____

A

Ventricular tachycardia

28
Q

What is normal pulse rate in a child?

A

80-120 bpm

29
Q

What is a normal pulse rate in an adult?

A

60-100 bpm

30
Q

What medication will slow down a fast heart rate?

A

Beta-blockers

31
Q

On an EKG tracing, a conduction defect from the SA to AV node would be noted by _____

A

Long PR interval

32
Q

When performing an EKG, the ground lead is found on the ____

A

Right leg

33
Q

Where are the chest leads placed on an EKG?

A

V1 - Fourth intercostal space to the right of the sternum
V2 - Fourth intercostal space to the left of the sternum
V3 - Between V2 and V4
V4 - Fifth left intercostal space, midclavicular line
V5 - Level of V4, left anterior axillary line
V6 - Fifth intercostal space at the left midaxillary line

34
Q

Which heart block is being described: P waves do not correlate with complexes

A

Third degree A-V block

35
Q

Which heart block is being described: Progressive widening of the P-R interval

A

Second degree A-V block mobitz type I

36
Q

Which heart block is being described: Extra P wave between each complex with no warning

A

Second degree A-V heart block mobitz type II

37
Q

Which heart block is being described: Widened PR interval

A
38
Q

Holter monitoring is usually performed for ___ or ___ hours. The ECG records ___ channels with the placement with the placement of ___ chest electrodes.

A

24, 48, 2, 5

39
Q

Joules sequence for defibrillation

A

1st attempt: 200 joules
2nd attempt: 300 joules
3rd attempt: 360 joules
4th attempt: 360 joules

40
Q

List the point of electrical conduction in the heart

A

SA node, AV node, Bundle of His, Right and Left bundle branches, and Purkinjie fibers

41
Q

What does the QRS represent

A

Ventricular depolarization

42
Q

What would you see if there was a conduction delay at the AV node?

A

Long PR interval

43
Q

What are ectopic foci?

A

Impulses that originate from sites other than the SA node

44
Q

True or False: R-R interval is peak to peak, and this should always be equal distance. If not, the rhythm is considered irregular

A

True

45
Q

What is the intrinsic rate of the SA node?

A

60-100 bpm

46
Q

What does the P wave represent?

A

Contraction of the SA node

47
Q

How long is a normal P wave?

A

0.12 seconds

48
Q

How many leads do we place when doing a 12 lead EKG?

A

10

49
Q

When does the defibrillator discharge the electrical shock in synchronized cardioversion?

A

On the R wave

50
Q

What would you recommend for sinus bradycardia?

A

Atropine

Respiratory - Semester I (13 decks)

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