Practice ECG Rhythm Strips 92
Identify the following rhythms.
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Answers
1.
The rhythm is irregular due to the PVCs. The rate is 90/min. The P waves are wide, upright and precede a QRS complex. There are unifocal PVCs that occur every other beat. A compensatory pause follows the PVC. PR; .16 sec. QRS: .12 sec, QT: .36 sec.
2.
The rhythm is regular with a rate of 102. The P waves are wide and tall suggesting biatrial enlargement. No ectopic beats are noted. PR: . 16 sec, QRS: .08 sec, QT: .36 sec.
3.
The rhythm is irregular with a PAC. The rate is 90/min. The P waves are upright and precede the QRS complexes. The 8th complex is a premature atrial complex. The morphology of the P waves differs from the sinus P waves. PR: .20 sec, QRS: .08 sec, QT: . 36 sec.
4.
The rhythm is irregular. The rate is 36/min. (This is a 10 second strip. Multiply the number of QRS complexes in the strip by 6). No P waves are noted. The QRS complex is narrow. PR: ---, QRS: .08 sec, QT: .44 sec. The irregularity of the rhythm and the absence of P waves suggests atrial fibrillation instead of a junctional rhythm which tends to be more regular.
5.
The rhythm is regular with a rate of 72/min. The paves and the QRS complexes are preceded by pacer spikes. No ectopic beats are noted. PR; .10 sec, QRS: 16 sec, QT: .44 sec.
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2.
3.
4.
5.
Answers
1.
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| NSR with bigeminy |
The rhythm is irregular due to the PVCs. The rate is 90/min. The P waves are wide, upright and precede a QRS complex. There are unifocal PVCs that occur every other beat. A compensatory pause follows the PVC. PR; .16 sec. QRS: .12 sec, QT: .36 sec.
2.
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| Sinus tachycardia |
The rhythm is regular with a rate of 102. The P waves are wide and tall suggesting biatrial enlargement. No ectopic beats are noted. PR: . 16 sec, QRS: .08 sec, QT: .36 sec.
3.
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| NSR with a PAC |
The rhythm is irregular with a PAC. The rate is 90/min. The P waves are upright and precede the QRS complexes. The 8th complex is a premature atrial complex. The morphology of the P waves differs from the sinus P waves. PR: .20 sec, QRS: .08 sec, QT: . 36 sec.
4.
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| Atrial fibrillation with slow ventricular response |
The rhythm is irregular. The rate is 36/min. (This is a 10 second strip. Multiply the number of QRS complexes in the strip by 6). No P waves are noted. The QRS complex is narrow. PR: ---, QRS: .08 sec, QT: .44 sec. The irregularity of the rhythm and the absence of P waves suggests atrial fibrillation instead of a junctional rhythm which tends to be more regular.
5.
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| AV paced |
The rhythm is regular with a rate of 72/min. The paves and the QRS complexes are preceded by pacer spikes. No ectopic beats are noted. PR; .10 sec, QRS: 16 sec, QT: .44 sec.
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