Practice EKG Rhythm Strips 111
Identify the following rhythms.
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Answers
1.
The rhythm is regular with a rate of 88/min. The P waves are upright and precede the QRS complexes. The PR interval is prolonged. No ectopic beats are noted. PR: .28 sec, QRS: .08 sec, QT: .36 sec.
2.
The rhythm is irregular due to the PVCs. The rate is 110/min. The P waves are broad and upright and are associated with a QRS complex. The ectopic PVCs appear to be fused with a sinus P wave. The R wave of the PVC looks like it begins on what would be a P wave. If you measure the P-P distance they "march" through the ventricular ectopic beats. There are trigeminal PVCs. PR: .20 sec, QRS: .08 sec, QT: .36 sec.
3.
The rhythm is rapid and irregular with a rate of 160/min. No P waves are present, only fibrillatory activity between each QRS complex. No ectopic beats are present. PR: ---, QRS: .08, QT: .28 sec.
4.
The rhythm is irregular with a ventricular rate of 70/min. Flutter waves are present between the QRS complexes in ratio of 3:1 and 4:1. No ectopic beats are present. PR: ---, QRS: .08 sec, QT: .40.
5.
The rhythm is irregular with a rate of 70/min. The R-R interval between the first and second complex is .96 sec and the R-R interval between the 4th and 5th complex is .76 sec. The P waves are associated with a QRS complex. No ectopic beats are present. PR: .16 sec, QRS: .08 sec, QT: .40 sec.
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2.
3.
4.
5.
Answers
1.
Normal sinus rhythm with 1st degree block |
The rhythm is regular with a rate of 88/min. The P waves are upright and precede the QRS complexes. The PR interval is prolonged. No ectopic beats are noted. PR: .28 sec, QRS: .08 sec, QT: .36 sec.
2.
Sinus tachycardia with trigeminal PVCs |
The rhythm is irregular due to the PVCs. The rate is 110/min. The P waves are broad and upright and are associated with a QRS complex. The ectopic PVCs appear to be fused with a sinus P wave. The R wave of the PVC looks like it begins on what would be a P wave. If you measure the P-P distance they "march" through the ventricular ectopic beats. There are trigeminal PVCs. PR: .20 sec, QRS: .08 sec, QT: .36 sec.
3.
Atrial fibrillation with rapid ventricular response |
The rhythm is rapid and irregular with a rate of 160/min. No P waves are present, only fibrillatory activity between each QRS complex. No ectopic beats are present. PR: ---, QRS: .08, QT: .28 sec.
4.
Atrial flutter with variable ventricular response |
The rhythm is irregular with a ventricular rate of 70/min. Flutter waves are present between the QRS complexes in ratio of 3:1 and 4:1. No ectopic beats are present. PR: ---, QRS: .08 sec, QT: .40.
5.
Sinus arrhythmia |
The rhythm is irregular with a rate of 70/min. The R-R interval between the first and second complex is .96 sec and the R-R interval between the 4th and 5th complex is .76 sec. The P waves are associated with a QRS complex. No ectopic beats are present. PR: .16 sec, QRS: .08 sec, QT: .40 sec.
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