ECG Rhythm Strips 78
Identify the following rhythms
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Answers
1.
The rhythm is irregular with a rate of 40/min. The P waves are upright and uniform but there are some dropped P waves following the 2nd, 4th, and 6th complexes. There is progressive prolongation of the PR interval. No ectopic beats are noted. PR: .28 sec and .34 sec, QRS: .12 sec, QRS: .52 sec
2.
The rhythm is irregular due to the ectopic beats. The rate is 100/min. There are negative P waves seen before their associated QRS complexes. Two unifocal PVCs are present and are followed by a compensatory pause. The QRS complex in the V1 lead has an rSR configuration suggesting a right bundle branch block (RBBB). PR: .16 sec, QRS: .12 sec, QT: .36 sec.
3.
The rhythm is irregular because of the frequent PVCs. The rate is 90/min. The P waves are upright and are associated with a QRS complex. The P waves are tall suggesting right atrial enlargement. Unifocal PVCs are seen in a bigeminal pattern. A compensatory pause follows the PVCs. PR: .16 sec, QRS: .12 sec. QT: .36 sec.
4.
The rhythm is regular with a rate of 83/min. The P waves are upright and have a corresponding QRS complex. No ectopic beats are noted. PR: .12 sec, QRS: .12 sec, QT: .44 sec.
5.
The rhythm is regular with a rate of 71/min. There are some small flutter waves between the QRS complexes. No ectopic beats are noted. Ventricular pacer spikes are seen before each QRS complex. PR; ---, QRS: .16 sec, QT: .44 sec
Reviewed 3/9/16
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2.
3.
4.
5.
Answers
1.
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| 2nd Degree Heart Block Type I |
The rhythm is irregular with a rate of 40/min. The P waves are upright and uniform but there are some dropped P waves following the 2nd, 4th, and 6th complexes. There is progressive prolongation of the PR interval. No ectopic beats are noted. PR: .28 sec and .34 sec, QRS: .12 sec, QRS: .52 sec
2.
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| Accelerated Junctional Rhythm with Unifocal PVCs |
The rhythm is irregular due to the ectopic beats. The rate is 100/min. There are negative P waves seen before their associated QRS complexes. Two unifocal PVCs are present and are followed by a compensatory pause. The QRS complex in the V1 lead has an rSR configuration suggesting a right bundle branch block (RBBB). PR: .16 sec, QRS: .12 sec, QT: .36 sec.
3.
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| Normal sinus rhythm with bigeminy |
The rhythm is irregular because of the frequent PVCs. The rate is 90/min. The P waves are upright and are associated with a QRS complex. The P waves are tall suggesting right atrial enlargement. Unifocal PVCs are seen in a bigeminal pattern. A compensatory pause follows the PVCs. PR: .16 sec, QRS: .12 sec. QT: .36 sec.
4.
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| Normal Sinus Rhythm |
The rhythm is regular with a rate of 83/min. The P waves are upright and have a corresponding QRS complex. No ectopic beats are noted. PR: .12 sec, QRS: .12 sec, QT: .44 sec.
5.
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| Ventricular Paced |
The rhythm is regular with a rate of 71/min. There are some small flutter waves between the QRS complexes. No ectopic beats are noted. Ventricular pacer spikes are seen before each QRS complex. PR; ---, QRS: .16 sec, QT: .44 sec
Reviewed 3/9/16
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