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Nursing 2 > EKG > Flashcards

EKG Flashcards

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1
Q

What is an EKG?

A

measurement of the electrical conductance of the heart

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2
Q

Are Q and S waves always present?

A

No

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3
Q

When is the T wave usually positive?

A

In Lead 2

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4
Q

What is R-R interval?

A

peak to peak

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5
Q

What are P-R interval and QRS?

A

baseline to baseline

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6
Q

What happens in a first degree heart block?

A

prolonged P-R interval, delayed impulse SA through AV node

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7
Q

What is a first degree heart block associated with?

A

occasionally normal animals, digitalis toxicity, chronic heart disease

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8
Q

How do you treat a 1st degree heart block?

A

decrease digitalis dose if cause

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9
Q

What is a 2nd degree heart block?

A

P without QRS

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10
Q

What is a 2nd degree heart block associated with?

A

digitalis toxicity, increase vagal tone in brachycephalic breeds

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11
Q

How do you TX 2nd degree heart block?

A

withdraw digitalis, atropine or isoproterenol if symptomatic

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12
Q

What happens in a 3rd degree heart block?

A

impuse through AV blocked, no relationship between P waves and QRS complexes

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13
Q

What are early signs of trouble?

A

bradycardia, tachycardia, VPC, 1st or 2nd degree heart block

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14
Q

What is ventricular tachycardia?

A

4 VPC in a row!

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15
Q

What does a change in the polarity of the T wave mean?

A

hypoxia!

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16
Q

What is measured with P?

A

height = right atrium, width = left atrium. opposite for r w. ventricles

17
Q

How do you calculate HR?

A

of complexes in 3 seconds x 20

18
Q

How many hash marks is 3 seconds when doing 25 paper speed?

A

2

19
Q

How many hash marks is 3 seconds when doing 25 paper speed?

A

3

20
Q

What is 60 cycle interference?

A

very eve sawtooth line

21
Q

What does lead 3 do?

A

widens out the QRS

22
Q

What does lead 1 cause?

A

generally small or absent P and T waves

23
Q

What makes lead 1 hard to use?

A

shape of animals chest

24
Q

What recumbency should an animal be in?

A

right lateral

25
Q

How long do you run it for?

A

60 seconds or 18 iches on a strip

Nursing 2 (9 decks)

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