Cardiology Rhythms Flashcards

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1
Q

Sinus bradycardia

A

Slower than 60 Bpm
All p waves are identical
All PR intervals are identical

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2
Q

Sinus Tachycardia

A

Faster than 100 Bpm
All p waves are identical
All PR intervals are identical

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3
Q

Sinus Arrhythmia

A

Can have a normal rate, a brady or tachy rate
All p waves are identical
All PR intervals are identical
Irregular heart rate.

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4
Q

What do all sinus rhythms have in common?

A

They all originate from the SA node

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5
Q

Cycle 1 of the heart

A

Majority of the heart is at rest. SA node is preparing to depolarize

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6
Q

Cycle 2 of the heart

A

SA node has fired and the signal is being spread through the intermodal pathways on the way to the AV node

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7
Q

cycle 3 of the heart

A

Right atria has depolarizer and the signal has reached the AV node

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8
Q

Cycle four of the heart

A

Both atria have depolarized completely. SA node and surrounding area have begun to depolarize.

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9
Q

Cycle 5 of the heart

A

Depolarization of the left atria is almost complete and repolarization of the right atria is happening

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10
Q

Normal PR interval time

A

0.12 - 0.2 seconds

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11
Q

What is a sign of a Sinus Block?

A

The cadence of the rhythm will remain the same and continues to fire on schedule.

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12
Q

In a sinus block what is never present?

A

P wave

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13
Q

What is a sinus pause?

A

It is a caused delay in the formation of a sinus impulse in the sinus node itself.

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14
Q

What is a tall tale sign of a sinus pause?

A

The cadence of the rhythm can possibly reset. They never have an exact multiple of normal P - P intervals.

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15
Q

What is the rule of thumb when trying to asses a Block between a pause?

A
Pause = 3x time shorter than the P-P
Block = 3x longer than the P-P
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16
Q

What is normally the regularity with Sinus Arrhythmia?

A

Regular with events

17
Q

What is a Premature Atrial Contraction?

A

PAC refers to an impulse or complex that occurs earlier than expected and originates in an atrial focus, not in the SA node.

18
Q

Normal Sinus Rhythm

A

60 - 100 Bpm
All p waves are identical
All PR intervals are identical
Regular heart rate

19
Q

1st Degree AV Block

A

Prolonged PR interval longer than .2 which is one big box

20
Q

2nd Degree AV Block (Wenckebach) (mobitz II)

A

In which the PR interval become progressively longer until AV node is not penetrated (No QRS).

The PR interval become gradually longer from cycle to cycle until the final P wave doesn’t elicit a response.

21
Q

1st Degree AV Block

A

Prolonged PR interval longer than .2 which is one big box

22
Q

2nd Degree AV Block (Wenckebach) (mobitz II)

A

In which the PR interval become progressively longer until AV node is not penetrated (No QRS).

The PR interval become gradually longer from cycle to cycle until the final P wave doesn’t elicit a response.