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Coronary Care > Practice ECGs > Flashcards

Practice ECGs Flashcards

1
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Practice Strip 1

AR: 85

VR: 85

Rhythm: regular

P waves: normal

PR interval: 0.20 sec

QRS complex: narrow (0.08 sec)

Interpretation: normal sinus rhythm

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2
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Practice Strip 2

AR: 300

VR: 70

Rhythm: regular

P waves: replaced by flutter waves

PR interval: none (there are no P waves

)

QRS complex: narrow (0.06 sec)

Interpretation: atrial flutter (with 4:1 conduction)

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3
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Practice Strip 3

  • AR: not measurable
  • VR: 150-160
  • Rhythm: irregular
  • P waves: none
  • PR interval: none
  • QRS complex: narrow (0.04 sec)

Interpretation: atrial fibrillation

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4
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Practice Strip 4

  • AR: 60
  • VR: 60
  • Rhythm: regular
  • P waves: normal
  • PR interval: 0.34 sec
  • QRS complex: narrow (0.08 sec)
  • Interpretation: first degree AV block
  • (of note: inverted T waves)
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5
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Practice Strip 5

  • AR: 185
  • VR: 185
  • Rhythm: regular
  • P waves: normal, very close to T waves and difficult to see
  • PR interval: 0.14 sec
  • QRS complex: narrow (0.06 sec)
  • Interpretation: PAT (because the Ps are hard to see, you might say they are buried, and the rhythm could be JT. If unsure, you can call it SVT)
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6
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Practice Strip 6

  • AR: 115
  • VR: 115
  • Rhythm: regular
  • P waves: normal
  • PR interval: 0.20 sec
  • QRS complex: narrow (0.08 sec)
  • Interpretation: sinus tachycardia
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7
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Practice Strip 7

  • AR: 70-75
  • VR: 70-75
  • Rhythm: regular, except for the premature 4th beat
  • P waves: normal (except for 4th complex where the P is inverted)
  • PR interval: 0.16 sec
  • QRS complex: narrow (0.05 sec)
  • Interpretation: normal sinus rhythm, with a PJC
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8
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Practice Strip 8

  • AR: 50
  • VR: 50
  • Rhythm: regular
  • P waves: follow the QRS complexes
  • PR interval: none
  • QRS complex: narrow
  • Interpretation: junctional escape rhythm
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9
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Practice Strip 9

  • AR: not measurable (no obvious P waves)
  • VR: about 35
  • Rhythm: irregular
  • P waves: none, fibrillatory line only
  • PR interval: none
  • QRS complex: narrow (0.08 sec)
  • Interpretation: slow atrial fibrillation
  • (of note: inverted T waves)
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10
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Practice Strip 10

  • AR: 50
  • VR: 100
  • Rhythm: regularly irregular
  • P waves: normal before narrow QRSs, and absent before wide QRSs
  • PR interval: 0.16 sec (when measurable)
  • QRS complex: narrow ones are 0.10 sec, and every second QRS is wide

Interpretation: ventricular bigeminy (every 2nd complex is a PVC

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11
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Practice Strip 11

  • AR: not measurable (no obvious P waves)
  • VR: 110
  • Rhythm: irregular
  • P waves: none, fibrillatory line only
  • PR interval: none
  • QRS complex: narrow
  • Interpretation: atrial fibrillation
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12
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Practice Strip 12

  • AR: about 70
  • VR: about 70
  • Rhythm: irregular
  • P waves: normal
  • PR interval: 0.14 sec
  • QRS complex: narrow
  • Interpretation: sinus arrhythmia
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13
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Practice Strip 13

  • AR: 72
  • VR: 72
  • Rhythm: regular except for the premature 2nd and the last beats
  • P waves: normal except for the 2nd and last beat
  • PR interval: 0.16 sec
  • QRS complex: narrow
  • Interpretation: normal sinus rhythm, with PACs (might be considered PJCs, as the Ps are almost fully inverted)
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14
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Practice Strip 14

  • AR: not measurable
  • VR: 155
  • Rhythm: irregular
  • P waves: none (fibrillatory line only)
  • PR interval: none
  • QRS complex: narrow
  • Interpretation: atrial fibrillation
  • (of note: the QRS complexes consist only of Q waves)
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15
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Practice Strip 15

  • AR: 72
  • VR: 72
  • Rhythm: regular, except for the premature 4th beat
  • P waves: normal, except for 4th beat, which is inverted
  • PR interval: 0.16 sec (except for 4th beat which is 0.08 sec)
  • QRS complex: narrow
  • Interpretation: normal sinus rhythm with a PJC
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16
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Practice Strip 16

  • AR: 300
  • VR: 50-60
  • Rhythm: irregular
  • P waves: none, replaced by flutter waves
  • PR interval: none
  • QRS complex: narrow
  • Interpretation: atrial flutter, with variable conduction
17
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Practice Strip 17

  • AR: 80
  • VR: 80
  • Rhythm: irregular
  • P waves: normal
  • PR interval: 0.14 sec
  • QRS complex: narrow
  • Interpretation: sinus arrhythmia
18
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Practice Strip 18

  • AR: 300
  • VR: 70
  • Rhythm: regular
  • P waves: none, replaced by flutter waves
  • PR interval: none
  • QRS complex: narrow
  • Interpretation: atrial flutter, with 4:1 conduction
19
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Practice Strip 19

  • AR: not measurable
  • VR: 200-210
  • Rhythm: regular
  • P waves: no obvious P waves
  • PR interval: none
  • QRS complex: narrow, 0.08 sec
  • Interpretation: SVT (it could be PAT with Ps that are difficult to see because of the rapid rate, or it could be PJT with Ps that are buried)
20
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Practice Strip 20

  • AR: 55
  • VR: 55
  • Rhythm: regular
  • P waves: normal
  • PR interval: 0.30 sec
  • QRS complex: narrow
  • Interpretation: first degree AV block
21
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Practice Strip 21

  • AR: 50-55
  • VR: about 40
  • Rhythm: irregular
  • P waves: normal, but there’s an extra P wave after the 3rd QRS
  • PR interval: variable: 0.24 sec, 0.32 sec, 0.40 sec, then a P with no QRS that follows. Then the sequence starts over again (the PR prolongs until a QRS is missing)
  • QRS complex: narrow
  • Interpretation: second degree AV block, type I (Wenckebach)
22
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Practice Strip 22

  • AR: 90
  • VR: 90
  • Rhythm: regular
  • P waves: inverted before each QRS
  • PR interval: 0.10 sec
  • QRS complex: narrow
  • Interpretation: accelerated junctional rhythm
23
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Practice Strip 23

  • AR: about 90 (if you find 2 obvious consecutive P waves, such as the two between the 2nd and 3rd QRSs, then use either the “caliper” or “scrap paper” method learned to determine regularity of the rhythm, you should find 9 P waves on this strip)
  • VR: 30
  • Rhythm: regular
  • P waves: lots of extras
  • PR interval: variable: 0.60 sec, 0.12 sec, 0.70 sec, 0.36 sec
  • QRS complex: narrow
  • Interpretation: third degree AV block
24
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Practice Strip 24

  • AR: about 120 (again, find 2 obvious consecutive P waves, such as the two after the 1st QRS, and using either method to determine the regularity, you should find 12 P waves on this strip, though some blend in with the QRS complexes)
  • VR: 45
  • Rhythm: regular
  • P waves: lots of extras
  • PR interval: variable: 0.24 sec, 0.12 sec, 0.42 sec, 0.26 sec
  • QRS complex: wide
  • Interpretation: third degree AV block
25
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Practice Strip 25

  • AR: not measurable (no obvious P waves)
  • VR: 120
  • Rhythm: irregular
  • P waves: none, replaced with a fibrillatory line
  • PR interval: none
  • QRS complex: narrow
  • Interpretation: atrial fibrillation
  • (of note: ST segment depression)
26
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Practice Strip 26

  • AR: not measurable
  • VR: 160
  • Rhythm: regular
  • P waves: none
  • PR interval: none
  • QRS complex: wide
  • Interpretation: VT
27
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Practice Strip 27

  • AR: not measurable
  • VR: about 30
  • Rhythm: regular
  • P waves: none
  • PR interval: none
  • QRS complex: wide
  • Interpretation: IVR
28
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Practice Strip 28

  • AR: none
  • VR: none
  • Rhythm: irregular
  • P waves: none
  • PR interval: none
  • QRS complex: none
  • Interpretation: VF
29
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Practice Strip 29

  • AR: 45
  • VR: 135
  • Rhythm: regular
  • P waves: normal, lots of extras
  • PR interval: constant 0.14 sec
  • QRS complex: narrow
  • Interpretation: second degree AV block type II (Mobitz II)
30
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Practice Strip 30

  • AR: about 90
  • VR: about 70
  • Rhythm: irregular
  • P waves: normal, with extras
  • PR interval: variable 0.14 sec, 0.20 sec, 0.28 sec, then a P wave does not conduct. The sequence then starts over again
  • QRS complex: narrow
  • Interpretation: second degree type I (Wenckebach)
31
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Practice Strip 31

  • AR: 65
  • VR: 65
  • Rhythm: irregular
  • P waves: normal
  • PR interval: 0.12 sec
  • QRS complex: narrow
  • Interpretation: sinus arrhythmia
32
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Practice Strip 32

  • AR:72
  • VR: 72
  • Rhythm: regular
  • P waves: normal
  • PR interval: 0.32 sec
  • QRS complex: narrow
  • Interpretation: first degree AV block
  • (of note: inverted T waves)
33
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Practice Strip 33

  • AR: 35-40
  • VR: 35-40
  • Rhythm: regular
  • P waves: normal
  • PR interval: 0.30 sec
  • QRS complex: narrow
  • Interpretation: first degree AV block
34
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Practice Strip 34

  • AR: 70
  • VR: 70
  • Rhythm: regular
  • P waves: normal
  • PR interval: 0.22 sec
  • QRS complex: narrow
  • Interpretation: first degree AV block
35
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Practice Strip 35

  • AR: not measurable
  • VR: about 70
  • Rhythm: irregular
  • P waves: none, replaced by fibrillatory line
  • PR interval: none
  • QRS complex: narrow, except for the premature 5th one
  • Interpretation: atrial fibrillation with a PVC

Coronary Care (8 decks)

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