ECG Test #1 Flashcards

1
Q

How do you determine ECG rate using the rapid method?

A

Count 300, 150, 100, 75, 65, 50

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2
Q

What is normal rate?

A

60-100

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3
Q

What is Tachycardia?

A

> 100bpm

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4
Q

What is Bradycardia?

A

<60bpm

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5
Q

What is normal PR Interval duration?

A

0.12-.20 (multiply the number of squares by 0.04 sec

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6
Q

What is normal QRS duration?

A

0.06-0.10

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7
Q

What is normal QT interval duration?

A

0.36-0.44 (count boxes from start of QRS to end of T wave)

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8
Q

Sinus arrhythmia

A
  • Normal in adults, athletes, children

- Irregular atrial and ventricular rhythm that corresponds with RESPIRATORY CYCLE

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9
Q

Sinus Arrest

A

-Lack of stimulation from SA node
Sinus Arrest = 3 or more beats missing from EKG strip
-rhythm is out of wack; rhythm does not fall back in to place

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10
Q

Sinus Pause

A

1 or 2 beats missing from EKG strip

Subcategory of sinus arrest

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11
Q

Premature atrial contraction

A

PAC

  • originates outside of SA node
  • if PAC is NOT conducted through AV node the QRS complex is absent = “non conducted PAC”
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12
Q

Atrial Tachycardia

A
  • Atrial Rate 140-250
  • Ventricle rate usually equal to atrial rate
  • P wave often buried in previous T wave
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13
Q

Paroxysmal Atrial Tachycardia

A
  • brief periods of tachy that alternate with normal sinus
  • starts/stops suddenly
  • you will often see a T-P wave
  • P wave is pointed
  • PAC triggers PAT
  • atrial/ventricular rate 140-250
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14
Q

Atrial Flutter

A
  • Sawtooth
  • SVT with atrial rate of 140-250
  • Ventricular rate is 1/2 to 1/4 that of atrial rate
  • No T waves
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15
Q

Atrial Fibrillation

A
  • SVT with atrial rate of 400-600
  • Signal coming from several ectopic sites in atria
  • Fine, fibrillatory waves
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16
Q

Premature Junction Contraction

A
  • Ectopic beat from AV node

- Absent P wave; or may be inverted before/after/hidden in QRS complex

17
Q

Junctional Rhythm (aka Junctional escape rhythm)

A
  • string of beats occurring after a delay in atrial conduction
  • P waves inverted before or after or hidden in QRS complex
  • often do not see P wave
18
Q

Junctional Tachycardia

A
  • 3 or more PJCs in a row
  • P waves inverted
  • Rate 100-200 bpm
19
Q

Premature Ventricular Tachycardia

A

PVC

  • ectopic beat from ventricular focus
  • occurring every-other-beat = bigeminal
  • occurring every 3rd beat = trigeminy
  • QRS WIDE and BIZARRE
  • T wave is opposite from QRS
20
Q

Ventricular Tachycardia

A
  • 3 or more PVCs in a row
  • unstable rhythm
  • Rate: 100-250 bpm
21
Q

Ventricular Fibrillation

A
  • chaotic rhythm
  • undetermined rate
  • no P waves
22
Q

1st Degree AV Block

A
  • atrial impulses are CONSISTENTLY delayed through AV node

- PR interval is CONSISTENTLY delayed (>.20 sec)

23
Q

2nd Degree AV Block, Type I (Mobitz I or Wenckebach)

A

-PR interval gradually gets longer until QRS complex is DROPPED

24
Q

2nd Degree AV Block, Type II (Mobitz II)

A
  • Occasional SA node impulses failure to conduct to the ventricles
  • Occasional dropped QRS
  • atrial rate > ventricular rate
25
Q

3rd Degree AV Block

A
  • Atria completely blocked at AV node
  • Atria and ventricles maintain regular rates INDEPENDENT of each other
  • QRS may be wide or normal
  • P waves often not linked to QRS