Practice EKG Rhythm Strips 172
Identify the following rhythms.
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Answers
1.
The rhythm is irregular due to the PVCs. The rate is 168/min. No P waves are visible. The T waves that follow the QRS complexes may be misconstrued as P waves. If you look at the PVCs you will note that the same T wave configuration is present. This leads me to suspect that these are T waves and not P waves. The PVCs occur regularly, every 8th beat. PR: ---, QRS: QT: .08 sec, QT: .28 sec.
2.
The rhythm is irregular with a rate of 66. The P waves are upright and precede the QRS complexes. No ectopic beats are noted. PR: .22 sec, QRS: .12 sec, QT: .44 sec.
3.
The rhythm is irregular due to the PVC. The rate is 108. There P waves are uniform and upright and correspond the QRS complexes. There is a single PVC present. PR: .16 sec, QRS: .08 sec, QT: .36 sec.
4.
The rhythm is regular with a rate of 96/min. There are small P waves present but do not always appear associated with the QRS complexes. No ectopic beats are present. Ventricular pacer spikes are present before each QRS complex.
5.
You could call this rhythm an SVT but it is so irregularly, irregular that it is most likely an atrial fibrillation. Also, if you look in between the complexes there are some fibrillatory waves present.
I apologize about the size of these strips. Once I uploaded them I could not increase their size to make the interpretation easier for you. :-(
1.
2.
3.
4.
5.
Answers
1.
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| Supraventricular tachycardia with frequent PVCs |
The rhythm is irregular due to the PVCs. The rate is 168/min. No P waves are visible. The T waves that follow the QRS complexes may be misconstrued as P waves. If you look at the PVCs you will note that the same T wave configuration is present. This leads me to suspect that these are T waves and not P waves. The PVCs occur regularly, every 8th beat. PR: ---, QRS: QT: .08 sec, QT: .28 sec.
2.
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| Sinus arrhythmia with 1st degree block |
The rhythm is irregular with a rate of 66. The P waves are upright and precede the QRS complexes. No ectopic beats are noted. PR: .22 sec, QRS: .12 sec, QT: .44 sec.
3.
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| Sinus tachycardia with a PVC |
The rhythm is irregular due to the PVC. The rate is 108. There P waves are uniform and upright and correspond the QRS complexes. There is a single PVC present. PR: .16 sec, QRS: .08 sec, QT: .36 sec.
4.
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| Ventricular paced |
The rhythm is regular with a rate of 96/min. There are small P waves present but do not always appear associated with the QRS complexes. No ectopic beats are present. Ventricular pacer spikes are present before each QRS complex.
5.
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| Atrial fibrillation with RVR |
You could call this rhythm an SVT but it is so irregularly, irregular that it is most likely an atrial fibrillation. Also, if you look in between the complexes there are some fibrillatory waves present.
I apologize about the size of these strips. Once I uploaded them I could not increase their size to make the interpretation easier for you. :-(
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