Practice EKG Rhythm Strips 226
Identify the following rhythms.
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Answers
1.
The rhythm is slightly irregular with a heart rate of 90/min. There are flutter waves between the QRS complexes. These are more prominent in the V1 lead. No ectopic beats are noted. PR: ---, QRS: .10 sec. QT: .28 sec Interpretation: Atrial flutter
2.
The rhythm is regular. The ventricular rate is 35 and an atrial rate of 100/min. The P waves are uniform and upright but are not paired with a QRS complex. On the 3rd complex you can see a P wave that is fused with the S wave of the QRS complex. No ectopic beats are seen. PR: ---, QRS: .16 sec, QT: .40 sec. Interpretation: 3rd degree heart block
3.
The rhythm is is irregular. The rate is 80/min. The P waves are positive but are not uniform. The QRS complex is narrow. There are premature atrial complexes seen, the 2nd, 6th, and 9th complexes. The P waves of the 2nd and 9th complexes are fused with the T waves of the preceding complexes. There is a brief pause following the PACs. PR: .14 sec, QRS: .08 sec, QT: .40 sec. Interpretation: Normal sinus rhythm with frequent PACs
4.
The rhythm is irregular. The heart rate is 90/min. The P waves are upright and associated with a QRS complex. The PR interval is prolonged. There are unifocal PVCs in a quadrigeminal pattern. A compensatory pause follows each PVC. PR: .24 sec, QRS: .08 sec, QT: .40 sec. Interpretation: Normal sinus rhythm with uniform PVCs
5.
The rhythm is very irregular. The rate is around 300/min. No P waves are seen. The QRS complex is very disorganized and wide. PR: ---, QRS: .16 sec. QT: ---. Interpretation: Ventricular fibrillation
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5.
Answers
1.
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| Atrial flutter |
The rhythm is slightly irregular with a heart rate of 90/min. There are flutter waves between the QRS complexes. These are more prominent in the V1 lead. No ectopic beats are noted. PR: ---, QRS: .10 sec. QT: .28 sec Interpretation: Atrial flutter
2.
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| 3rd degree heart block |
The rhythm is regular. The ventricular rate is 35 and an atrial rate of 100/min. The P waves are uniform and upright but are not paired with a QRS complex. On the 3rd complex you can see a P wave that is fused with the S wave of the QRS complex. No ectopic beats are seen. PR: ---, QRS: .16 sec, QT: .40 sec. Interpretation: 3rd degree heart block
3.
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| Normal sinus rhythm with frequent PACs |
The rhythm is is irregular. The rate is 80/min. The P waves are positive but are not uniform. The QRS complex is narrow. There are premature atrial complexes seen, the 2nd, 6th, and 9th complexes. The P waves of the 2nd and 9th complexes are fused with the T waves of the preceding complexes. There is a brief pause following the PACs. PR: .14 sec, QRS: .08 sec, QT: .40 sec. Interpretation: Normal sinus rhythm with frequent PACs
4.
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| Normal sinus rhythm with uniform PVCs |
The rhythm is irregular. The heart rate is 90/min. The P waves are upright and associated with a QRS complex. The PR interval is prolonged. There are unifocal PVCs in a quadrigeminal pattern. A compensatory pause follows each PVC. PR: .24 sec, QRS: .08 sec, QT: .40 sec. Interpretation: Normal sinus rhythm with uniform PVCs
5.
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| Ventricular fibrillation |
The rhythm is very irregular. The rate is around 300/min. No P waves are seen. The QRS complex is very disorganized and wide. PR: ---, QRS: .16 sec. QT: ---. Interpretation: Ventricular fibrillation
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