EKG Rhythm Strips 77
Identify the following rhythms.
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Answers
1.
The rhythm is regular with a rate of 86/min. The are positive P waves before each QRS complex. The PR interval is prolonged. No ectopic beats are noted. PR: .32 sec, QRS: .08 sec, QT: .40 sec.
2.
The rhythm is regular with a rate of 63/min. No P waves or ectopic beats are noted. The QRS is wide suggesting a ventricular ectopic rhythm. PR: ---, QRS: .16 sec, QT: .44 sec
3.
The rhythm is regular with a rate of 75/min. There are negative P waves before each QRS complex. No ectopic beats are noted. PR: .20 sec, QRS: .08 sec, QT: .32 sec.
4.
The rhythm is irregular. The rate is 72/min. The P waves are absent. Some fibrillatory activity is present between the QRS complexes. No ectopic beats are present. The 4th, 5th, 6th, 8th, and 9th complexes are ventricular paced beats. PR: ---, QRS: .12 sec, QT: .36 sec.
5.
The rhythm is slightly irregular. The rate is 108/min. The P waves are tall, upright, and preceded the QRS complexes. The tall P waves suggest right atrial enlargement. There is a premature beat, the 7th complex. Small 2mm Q waves are present. The P wave is may be buried buried T wave of the previous complex as the T wave appears broader than those of the other complexes. However, one could reasonably conclude that this premature beat is a junctional beat because of the negative down stroke that follows the T wave. I opt for a junctional origin because of the deep negative down stroke. We can take the middle ground and call this a premature supraventricular complex. PR: .16 sec, QRS: .08 sec, QT: .36 sec.
Reviewed 3/9/16
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2.
3.
4.
5.
Answers
1.
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| 1st Degree Block |
The rhythm is regular with a rate of 86/min. The are positive P waves before each QRS complex. The PR interval is prolonged. No ectopic beats are noted. PR: .32 sec, QRS: .08 sec, QT: .40 sec.
2.
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| Accelerated Idioventricular Rhythm |
The rhythm is regular with a rate of 63/min. No P waves or ectopic beats are noted. The QRS is wide suggesting a ventricular ectopic rhythm. PR: ---, QRS: .16 sec, QT: .44 sec
3.
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| Accelerated Junctional Rhythm |
The rhythm is regular with a rate of 75/min. There are negative P waves before each QRS complex. No ectopic beats are noted. PR: .20 sec, QRS: .08 sec, QT: .32 sec.
4.
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| Atrial Fibrillation with Demand Ventricular Pacing |
The rhythm is irregular. The rate is 72/min. The P waves are absent. Some fibrillatory activity is present between the QRS complexes. No ectopic beats are present. The 4th, 5th, 6th, 8th, and 9th complexes are ventricular paced beats. PR: ---, QRS: .12 sec, QT: .36 sec.
5.
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| Sinus Tachycardia with a PJC |
The rhythm is slightly irregular. The rate is 108/min. The P waves are tall, upright, and preceded the QRS complexes. The tall P waves suggest right atrial enlargement. There is a premature beat, the 7th complex. Small 2mm Q waves are present. The P wave is may be buried buried T wave of the previous complex as the T wave appears broader than those of the other complexes. However, one could reasonably conclude that this premature beat is a junctional beat because of the negative down stroke that follows the T wave. I opt for a junctional origin because of the deep negative down stroke. We can take the middle ground and call this a premature supraventricular complex. PR: .16 sec, QRS: .08 sec, QT: .36 sec.
Reviewed 3/9/16
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