EKG Rhythm Strips 79
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Identify the following rhythms. 1. 2. 3. 4. 5. Answers 1. Atrial fibrillation with bigeminy The rhythm is is irregular with a rate of 100/min. The P waves are absent and there are fibrillatory/flutter waves between the QRS complexes. A unifocal PVC is seen every other beat. A compensatory pause follows the PVC. PR: ---, QRS: .08 sec, QT: .32 sec. 2. Normal Sinus Rhythm with Unifocal PVCs The ectopic beats give this strip an irregular rhythm. The rate is 70/min (Count the R waves in a 6 second strip and multiply by 10.) The P waves are uniform, upright, and are associated with a QRS complex. The ST segment is down slopping. Two unifocal PVCs are seen and they are followed by a compensatory pause. PR: .16 sec, QRS: .12 sec, QT: .28 sec. 3. Ventricular paced with unifocal PVCs The rhythm is irregular with a rate of 80/min. The P waves are absent and so