Practice EKG Rhythm Strips 197
Identify the following rhythms.
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Answers
1.
The rhythm is irregular with a rate of 100/min. Flutter waves are seen with a varying ration of 2:1 3;1 and 4:1. No ectopic beats are present. PR: ---, QRS: .08 sec, QT: ---. Sometimes you cannot clearly pick out the T wave with atrial flutter.
2.
The rhythm irregular with frequent PVCs. The rate is 90/min. The P waves are uniform, upright, and paired with a QRS complex. There are bigeminal PVCs present. A compensatory pause follows each PVC. PR: .16 sec, QRS: .08 sec, QT: .28 sec.
3.
The rhythm is regular and the heart rate is 50/min. The P waves are negative and follow the QRS complex. The QRS complex is wide so this suggests and underlying intraventricular conduction delay. No ectopic beats are present. PR: ---, QRS: .12 sec, QT: .48 sec.,
4.
The rhythm is regular with a ventricular rate of 27/min and an atrial rate of 50/min. The P waves are upright but not all of them are associated with a QRS complex. Nonconducted P waves follow each QRS complex. The PR interval on the conducted beats is fixed. No ectopic beats are present. PR: .40 sec, QRS: .08 sec, QT: .48 sec.
5.
The rhythm is irregular with a rate of 130/min. The P waves are absent. A ventricular pacer spike precedes the QRS complexes. Three pairs of unifocal couplets are seen. PR: ---, QRS: .12 sec, QT: .48 sec.
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2.
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3.
4.
5.
Answers
1.
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| Atrial flutter |
The rhythm is irregular with a rate of 100/min. Flutter waves are seen with a varying ration of 2:1 3;1 and 4:1. No ectopic beats are present. PR: ---, QRS: .08 sec, QT: ---. Sometimes you cannot clearly pick out the T wave with atrial flutter.
2.
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| NSR with bigeminal PVCs |
The rhythm irregular with frequent PVCs. The rate is 90/min. The P waves are uniform, upright, and paired with a QRS complex. There are bigeminal PVCs present. A compensatory pause follows each PVC. PR: .16 sec, QRS: .08 sec, QT: .28 sec.
3.
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| Junctional rhythm |
The rhythm is regular and the heart rate is 50/min. The P waves are negative and follow the QRS complex. The QRS complex is wide so this suggests and underlying intraventricular conduction delay. No ectopic beats are present. PR: ---, QRS: .12 sec, QT: .48 sec.,
4.
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| 2nd degree AV block type II |
The rhythm is regular with a ventricular rate of 27/min and an atrial rate of 50/min. The P waves are upright but not all of them are associated with a QRS complex. Nonconducted P waves follow each QRS complex. The PR interval on the conducted beats is fixed. No ectopic beats are present. PR: .40 sec, QRS: .08 sec, QT: .48 sec.
5.
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| Ventricular paced with frequent couplets |
The rhythm is irregular with a rate of 130/min. The P waves are absent. A ventricular pacer spike precedes the QRS complexes. Three pairs of unifocal couplets are seen. PR: ---, QRS: .12 sec, QT: .48 sec.
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