Practice ECG Rhythm Strips 98
Identify the following rhythms.
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Answers
1.
The rhythm is irregular with multiple ectopic beats. The rate is 96/min. The P waves are positive and are associated with a QRS complex. Unifocal PVCs occur every other beat. There are P waves before the 3rd and 4th PVC. The remaining PVC have a slurred upstroke on the R wave suggesting that they are fused with a P wave, this is especially evident on the 6th PVC. There is down slopping of the ST segment with a negative T wave. PR: .12 sec, QRS: .08 sec, QT: . 36 sec.
2.
The rhythm is irregular due to the ectopic beats. The rate is 72/min. There are positive P waves that are associated with a QRS complex. Unifocal PVCs are seen every 3rd beat in a trigeminal pattern. A compensatory pause follows the PVC. The T wave is negative. PR: .20 sec, QRS: .10 sec, QT: .40 sec.
3.
The rhythm is irregular with a rate of 78/min. The P waves are spit but upright and precede the QRS complex. There are unifocal PVCs every 4th beat. PR: .20 sec, QRS: .08 sec, QT: .40 sec.
4.
The rhythm is irregular with a rate of 102. Upright P waves have a corresponding QRS complex. There are unifocal PVCs every 5th beat. A compensatory pause follows each PVC. PR: .12 sec, QRS: .08 sec, QT: .36 sec.
5.
The rhythm is irregular with a rate of 96/min. The P waves are uniform, positive, and are associated with a QRS complex. The PR interval is prolonged. Unifocal PVCs are seen every 6th beat. PR: .22 sec, QRS; .08 sec, QT: .40 sec.
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4.
5.
Answers
1.
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| NSR with unifocal PVCs (bigeminy) |
The rhythm is irregular with multiple ectopic beats. The rate is 96/min. The P waves are positive and are associated with a QRS complex. Unifocal PVCs occur every other beat. There are P waves before the 3rd and 4th PVC. The remaining PVC have a slurred upstroke on the R wave suggesting that they are fused with a P wave, this is especially evident on the 6th PVC. There is down slopping of the ST segment with a negative T wave. PR: .12 sec, QRS: .08 sec, QT: . 36 sec.
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| NSR with unifocal PVCs (trigeminy) |
The rhythm is irregular due to the ectopic beats. The rate is 72/min. There are positive P waves that are associated with a QRS complex. Unifocal PVCs are seen every 3rd beat in a trigeminal pattern. A compensatory pause follows the PVC. The T wave is negative. PR: .20 sec, QRS: .10 sec, QT: .40 sec.
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| NSR with unifocal PVCs (quadrigeminy) |
The rhythm is irregular with a rate of 78/min. The P waves are spit but upright and precede the QRS complex. There are unifocal PVCs every 4th beat. PR: .20 sec, QRS: .08 sec, QT: .40 sec.
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| Sinus tachycardia with unifocal PVCs (pentageminy) |
The rhythm is irregular with a rate of 102. Upright P waves have a corresponding QRS complex. There are unifocal PVCs every 5th beat. A compensatory pause follows each PVC. PR: .12 sec, QRS: .08 sec, QT: .36 sec.
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| NSR 1st degree block with unifocal PVCs (hexigeminy) |
The rhythm is irregular with a rate of 96/min. The P waves are uniform, positive, and are associated with a QRS complex. The PR interval is prolonged. Unifocal PVCs are seen every 6th beat. PR: .22 sec, QRS; .08 sec, QT: .40 sec.
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