EKG Rhythm Stirps 67
Identify the following rhythms.
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Answers
1.
The rhythm is irregular with a rate of 54/min. The P waves are upright but not all are associated with a QRS complex. A dropped beat follows the 1st, 3rd, 5th, and 7th complexes. The PR interval on the conducted beats is consistent. No ectopic beats are noted. PR: .26 sec, QRS: .16 sec, QT: ---
2.
The rhythm is regular with a rate of 54/min. The P waves are upright and are preceded by a atrial pacer spike. The PR interval is prolonged. No ectopic beats are present. An ventricular pacing stimulus precedes each QRS complex. For some reason some of the pacer spikes are much smaller than others. PR: .40 sec, QRS: .16 sec, QT; .44 sec.
3.
The rhythm is irregular. The rate is 48/min. The P waves are absent but there are fibrillatory waves between the QRS complexes. No ectopic beats are noted. PR: ---, QRS: .08 sec, QT: .52 sec.
4.
The rhythm is regular with a rate of 100/min. The P waves are positive and seen before each QRS complex. The P waves are tall, a characteristic of right atrial enlargement. No ectopic beats are observed. PR: .16 sec, QRS: .08 sec, QT; .32 sec.
5.
The rhythm is irregular due to the ectopic complexes. The rate is 90/min. The P waves are uniform and upright. Two unifocal PVCs are present and they are each followed by an atrial escape beat. The P wave of the escape beats is nearly merged with the R wave of the QRS complex giving it a delta-wave like appearance. PR: .12 sec, QRS: .08 sec, QT: .36 sec.
Reviewed 3/6/16
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Answers
1.
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| 2nd degree heart block type II |
The rhythm is irregular with a rate of 54/min. The P waves are upright but not all are associated with a QRS complex. A dropped beat follows the 1st, 3rd, 5th, and 7th complexes. The PR interval on the conducted beats is consistent. No ectopic beats are noted. PR: .26 sec, QRS: .16 sec, QT: ---
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| AV paced |
The rhythm is regular with a rate of 54/min. The P waves are upright and are preceded by a atrial pacer spike. The PR interval is prolonged. No ectopic beats are present. An ventricular pacing stimulus precedes each QRS complex. For some reason some of the pacer spikes are much smaller than others. PR: .40 sec, QRS: .16 sec, QT; .44 sec.
3.
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| Atrial fibrillation with slow ventricular response |
The rhythm is irregular. The rate is 48/min. The P waves are absent but there are fibrillatory waves between the QRS complexes. No ectopic beats are noted. PR: ---, QRS: .08 sec, QT: .52 sec.
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| Normal sinus rhythm |
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| NSR with unifocal PVCs followed by atrial escape beats |
The rhythm is irregular due to the ectopic complexes. The rate is 90/min. The P waves are uniform and upright. Two unifocal PVCs are present and they are each followed by an atrial escape beat. The P wave of the escape beats is nearly merged with the R wave of the QRS complex giving it a delta-wave like appearance. PR: .12 sec, QRS: .08 sec, QT: .36 sec.
Reviewed 3/6/16
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