Practice EKG Rhythm Strips 182
Identify the following rhythms.
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Answers
1.
The rhythm is very irregular with a rate of 160/min. No P waves are seen. No ectopic beats are noted. PR: ---, QRS: .10 sec, QT: .28 sec.
2.
The rhythm is regular with a heart rate of 68/min. The P waves are preceded by an atrial pacing stimulus. No ectopic beats are noted. PR: .16 sec, QRS: .08 sec, QT: .36 sec.
3.
The rhythm is regular. The heart rate is 68/min. The P waves and the QRS complexes are preceded by a pacer spike. PR: .12 sec, QRS: .16 sec, QT: .44 sec.
4.
The rhythm is irregular due to the multiple PVCs. The ventricular rate is 100/min. The P waves are uniform, positive, and are associated with a QRS complex. There are unifocal PVCs every other beat, ventricular bigeminy. The PVCs are followed by a compensatory pause. PR: .16 sec, QRS: .08 sec, QT: .34 sec.
5.
The rhythm is irregular due to the PACs. The heart rate is 90/min. The P waves are upright and precede the QRS complexes. The shape of the P waves on the 2nd, 5th, and 8th complexes differ from the sinus P waves. The PR interval is shorter too. The sinus P waves are wide and split suggesting left atrial enlargement. PR: .16 sec, QRS: .08 sec, QT: .36 sec.
1.
2.
3.
4.
.JPG)
5.
.JPG)
Answers
1.
 |
| Atrial fibrillation with rapid ventricular response |
The rhythm is very irregular with a rate of 160/min. No P waves are seen. No ectopic beats are noted. PR: ---, QRS: .10 sec, QT: .28 sec.
2.
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| Atrial paced |
The rhythm is regular with a heart rate of 68/min. The P waves are preceded by an atrial pacing stimulus. No ectopic beats are noted. PR: .16 sec, QRS: .08 sec, QT: .36 sec.
3.
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| Dual paced |
The rhythm is regular. The heart rate is 68/min. The P waves and the QRS complexes are preceded by a pacer spike. PR: .12 sec, QRS: .16 sec, QT: .44 sec.
4.
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| Normal sinus rhythm with bigeminal PVCs |
The rhythm is irregular due to the multiple PVCs. The ventricular rate is 100/min. The P waves are uniform, positive, and are associated with a QRS complex. There are unifocal PVCs every other beat, ventricular bigeminy. The PVCs are followed by a compensatory pause. PR: .16 sec, QRS: .08 sec, QT: .34 sec.
5.
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| Normal sinus rhythm with frequent PACs |
The rhythm is irregular due to the PACs. The heart rate is 90/min. The P waves are upright and precede the QRS complexes. The shape of the P waves on the 2nd, 5th, and 8th complexes differ from the sinus P waves. The PR interval is shorter too. The sinus P waves are wide and split suggesting left atrial enlargement. PR: .16 sec, QRS: .08 sec, QT: .36 sec.
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