1. Practice Rhythms Strips
Chapter 5
Practice Rhythms Strips
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2. Figure 5-9 Ventricular rate/rhythm Atrial rate/rhythm PR interval
QRS duration
Identification
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3. Figure 5-9 Ventricular rate/rhythm 75 bpm, regular Atrial rate/rhythm
None
PR interval
QRS duration
0.08 sec
Identification
Accelerated junctional rhythm;
ST-segment depression
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4. Figure 5-10 Ventricular rate/rhythm Atrial rate/rhythm PR interval
QRS duration
Identification
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5. Figure 5-10 Ventricular rate/rhythm 45 bpm / regular
Atrial rate/rhythm
None
PR interval
QRS duration
0.08 sec
Identification
Junctional rhythm; ST-segment elevation
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6. Figure 5-11
This rhythm strip is from a 88-year-old woman who experienced a syncopal episode. Blood sugar is 96. Medications include verapamil.
History: Myocardial infarction 9 years ago, stroke 5 years ago, hypertension, and diabetes.
Ventricular rate/rhythm
Atrial rate/rhythm
PR interval
QRS duration
Identification
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7. Figure 5-11 Ventricular rate/rhythm 75 bpm / regular
Atrial rate/rhythm
PR interval
0.16 sec
QRS duration
0.08 sec
Identification
Accelerated junctional rhythm
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8. Figure 5-12 Ventricular rate/rhythm Atrial rate/rhythm PR interval
QRS duration
Identification
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9. Figure 5-12 Ventricular rate/rhythm
Junctional escape beat
Nonconducted PAC
Ventricular rate/rhythm
70 bpm / regular except for the event
Atrial rate/rhythm
PR interval
0.16 sec
QRS duration
0.08 sec
Identification
Sinus rhythm with a nonconducted PAC and a junctional escape beat
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10. Figure 5-13 Ventricular rate/rhythm Atrial rate/rhythm PR interval
QRS duration
Identification
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11. Figure 5-13 Ventricular rate/rhythm
115 bpm (sinus beats) / regular except for the event
Atrial rate/rhythm
PR interval
0.16 sec (sinus beats)
QRS duration
0.06 sec (sinus beats)
Identification
Sinus tachycardia with a PJC
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12. Figure 5-14 Ventricular rate/rhythm Atrial rate/rhythm PR interval
QRS duration
Identification
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13. Figure 5-14 Ventricular rate/rhythm
79 bpm / regular (junctional beats)
Atrial rate/rhythm
Not measurable in junctional beats
PR interval
QRS duration
0.06 sec
Identification
Sinus rhythm changing to an accelerated junctional rhythm, back to a sinus rhythm
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14. Figure 5-15 Ventricular rate/rhythm Atrial rate/rhythm PR interval
QRS duration
Identification
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15. Figure 5-15 Ventricular rate/rhythm 71 bpm / regular
Atrial rate/rhythm
PR interval
0.14 sec
QRS duration
0.08 sec
Identification
Accelerated junctional rhythm;
ST-segment elevation
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16. Figure 5-16 Ventricular rate/rhythm Atrial rate/rhythm PR interval
QRS duration
Identification
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17. Figure 5-16 Ventricular rate/rhythm 32 bpm / regular
Atrial rate/rhythm
None
PR interval
QRS duration
0.06 to 0.08 sec
Identification
Junctional bradycardia; ST-segment depression, inverted T waves
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18. Figure 5-17 Ventricular rate/rhythm Atrial rate/rhythm PR interval
QRS duration
Identification
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19. Figure 5-17 Ventricular rate/rhythm 30 bpm (junctional beats)
Atrial rate/rhythm
None (junctional beats)
PR interval
0.16 sec (sinus beats);
none (junctional beats)
QRS duration
0.06 to 0.08 sec
Identification
Sinus beat, two junctional beats, sinus beat; ST-segment depression
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20. Figure 5-18 Ventricular rate/rhythm Atrial rate/rhythm PR interval
QRS duration
Identification
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21. Figure 5-18 Ventricular rate/rhythm 138 bpm / regular
Atrial rate/rhythm
Unable to determine
PR interval
QRS duration
0.10 sec
Identification
Narrow-QRS tachycardia, probably junctional tachycardia
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22. Figure 5-19 Ventricular rate/rhythm Atrial rate/rhythm PR interval
QRS duration
Identification
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23. Figure 5-19 Ventricular rate/rhythm 44 bpm / regular
Atrial rate/rhythm
PR interval
0.14 sec
QRS duration
0.08 sec
Identification
Junctional rhythm; ST-segment elevation
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24. Figure 5-20 Ventricular rate/rhythm Atrial rate/rhythm PR interval
QRS duration
Identification
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25. Figure 5-20 Ventricular rate/rhythm 52 bpm / regular
Atrial rate/rhythm
None
PR interval
QRS duration
0.06 sec
Identification
Sinus beat to junctional escape rhythm with inverted T waves
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26. Figure 5-21 Ventricular rate/rhythm Atrial rate/rhythm PR interval
QRS duration
Identification
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27. Figure 5-21 Ventricular rate/rhythm 100 bpm / regular
Atrial rate/rhythm
None
PR interval
QRS duration
0.08 sec
Identification
Accelerated junctional rhythm;
inverted T waves
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28. Figure 5-22 Ventricular rate/rhythm Atrial rate/rhythm PR interval
QRS duration
Identification
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29. Figure 5-22 Ventricular rate/rhythm
63 bpm (sinus beats) / regular except for the event (every third beat is a PJC)
Atrial rate/rhythm
PR interval
0.12 to 0.16 sec (sinus beats)
QRS duration
0.06 sec (sinus beats)
Identification
Sinus rhythm with PJCs
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30. Figure 5-23 Ventricular rate/rhythm Atrial rate/rhythm PR interval
QRS duration
Identification
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31. Figure 5-23 Ventricular rate/rhythm
64 bpm (sinus beats) / regular except for the event
Atrial rate/rhythm
PR interval
0.16 to 0.18 sec
QRS duration
0.08 sec
Identification
Sinus rhythm with an episode of sinus arrest and a junctional escape beat
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32. Questions?
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