Practice EKG Rhythm Strips 201
Identify the following rhythms.
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Answers
1.
The rhythm is irregular due to the PVC. The rate is 60/min. The P waves are upright and precede the QRS complexes. The PR interval is prolonged. There is a single PVC present. PR: .36 sec, QRS: .08 sec, QT: .40 sec.
2.
The rhythm may be regular or irregular. The rate is 20/min. No P waves are present. The QRS complexes are wide suggesting a ventricular origin to the rhythm. PR: ---, QRS: .20 sec, QT: .52 sec.
3.
The rhythm is irregular with a heart rate of 100/min. The P waves are absent. There are flutter waves seen between the QRS complex, seen more clearly in the V1 lead. No ectopic beats are noted. PR: ---, QRS: .08 sec, QT: .32 sec.
4.
The rhythm is regular with a ventricular rate of 34 and an atrial rate of 100/min. The P waves are upright but they are not associated with the QRS complex. The QRS complexes are wide indicating a ventricular escape mechanism. PR: ---, QRS: .16 sec., QT: .40 sec.
5.
The rhythm is irregular with a rate of 30/min. The P waves are upright on the 1st and 2nd complexes. The P waves are absent on the 2nd and 3rd complexes. A dropped PAC follows the 2nd complex and it is followed by a 2.8 sec pause. The pause is followed by a junctional escape beat and another shorter pause. This second pause is followed by another junctional escape beat.
1.
2.
3.
4.
5.
Answers
1.
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| 1st degree block with a PVC |
The rhythm is irregular due to the PVC. The rate is 60/min. The P waves are upright and precede the QRS complexes. The PR interval is prolonged. There is a single PVC present. PR: .36 sec, QRS: .08 sec, QT: .40 sec.
2.
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| Agonal rhythm |
The rhythm may be regular or irregular. The rate is 20/min. No P waves are present. The QRS complexes are wide suggesting a ventricular origin to the rhythm. PR: ---, QRS: .20 sec, QT: .52 sec.
3.
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| Atrial fibrillation |
4.
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| Complete heart block |
5.
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| Normal sinus rhythm with sinus arrest and junctional escape beats |
The rhythm is irregular with a rate of 30/min. The P waves are upright on the 1st and 2nd complexes. The P waves are absent on the 2nd and 3rd complexes. A dropped PAC follows the 2nd complex and it is followed by a 2.8 sec pause. The pause is followed by a junctional escape beat and another shorter pause. This second pause is followed by another junctional escape beat.
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