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Paramedic 01 > Junctional Rhythms > Flashcards

Junctional Rhythms Flashcards

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1
Q

What is retrograde conduction?

A

When the impulse spreads upwards from AV node to the atria

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2
Q

In junctional arrhythmias does the p wave precede the QRS complex consistently?

A

NO

Depends on whether the Atria or ventricles were depolarized first

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3
Q

What comes first if the ventricles are depolarized before the atria?

A

The QRS complex

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4
Q

What comes first if the atria is depolarized before the ventricles?

A

The P wave

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5
Q

What happens when the atria and ventricles depolarize simultaneously?

A

The P waves will be hidden within the QRS complex

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6
Q

How long is the PRI In junction all rhythms?

A

Less than .12 second

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7
Q

An inverted P wave originates in what two places?

A

AV node

Atria

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8
Q

What are four basic mechanisms that produce Arrhythmias in the AV junction?

A

Premature junctional complex
Junctional escape rhythm
Accelerated junctional rhythm
Junctional tachycardia

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9
Q

Premature junctional complex

Regularity

A

Depends on underlying rhythm

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10
Q

Premature junctional complex

Rate

A

Depends on underlying rhythm

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11
Q

Premature junctional complex

P Wave morphology (2)

A

Inverted

Falls before during or after QRS complex

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12
Q

Premature junctional complex

PRI

A

Less than .12

Only measured if precedes QRS complex

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13
Q

Premature junctional complex

QRS

A

Less than .12

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14
Q

Junctional escape rhythm

Regularity

A

Regular

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15
Q

Junctional escape rhythm

Rate

A

40-60

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16
Q

Junctional escape rhythm

P wave morphology

A

Inverted

Can fall before after or during QRS complex

17
Q

Junctional escape rhythm

PRI

A

Less than .12 if p wave precedes QRS complex

18
Q

Junctional escape rhythm

QRS

A

Less than .12

19
Q

What two categories are junctional tachycardia divided into?

A

Accelerated junctional rhythm

Junctional tachycardia

20
Q

What rate is the junction firing during accelerated junctional rhythm?

A

60-100

21
Q

What rate is the junction firing during junctional tachycardia?

A

100-180

22
Q

Accelerated junctional tachycardia

Regularity

A

Regular

23
Q

Accelerated junctional tachycardia

Rate

A

60-100

24
Q

Accelerated junctional tachycardia

P wave

A

Inverted before after or in between QRS complex

25
Q

Accelerated junctional tachycardia

PRI

A

Less than .12 only if precedes QRS complex

26
Q

Accelerated junctional tachycardia

QRS complex

A

Less than .12

27
Q

Junctional tachycardia

Regularity

A

Regular

28
Q

Junctional tachycardia

Rate

A

100-180

29
Q

Junctional tachycardia

P Wave

A

Inverted

Can fall before after or in between QRS complex

30
Q

Junctional tachycardia

PRI

A

Less than .12 if preceding QRS complex

31
Q

Junctional tachycardia

QRS

A

Less than .12

32
Q

What is the only difference you will see on an EKG between:
junctional escape rhythm
accelerated junctional rhythm
junctional tachycardia?

A

The rate

33
Q

What is the rate for junctional escape rhythms?

A

40-60

34
Q

What three junctional arrhythmias are caused by irritability?

A

Premature junctional complex
Junctional tachycardia
Accelerated junctional tachycardia

35
Q

What is supraventricular tachycardia? (SVT)

A

Used to describe a category of several regular tachyarrythmias that can’t be identified more accurately

36
Q

When do you label an EKG as a supraventricular tachycardia?

A

Regular arrhythmia
Indistinguishable p wave
Similar rate ranges

37
Q

What rate ranges do you commonly call supraventricular tachycardia?

A

150-250 BPM

38
Q

Where do impulses go when the AV node assumes pacemaking responsibility?

A

In the atria and ventricles

Paramedic 01 (31 decks)

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