EKG Rhythm Strip
Identify the following rhythm. (Click on the image to enlarge)
Atrial fibrillation with ventricular escape beats. The underlying rhythm is atrial fibrillation. Beats 4, 5, and 6 occur late in the cardiac cycle. The morphology of the QRS complex is much wider than the QRS complexes of beats 1, 2, 3, and 7. The R - R interval between beats 3 and 4 is about 37 small boxes, this corresponds to a rate of about 40 beats/min. Since the inherent rate of the ventricles is 20 - 40 bpm, complex 4 falls within the upper limits of an escape beat of ventricular origin. Complexes 5 and 6 occur at the same rate.
Atrial fibrillation with ventricular escape beats. The underlying rhythm is atrial fibrillation. Beats 4, 5, and 6 occur late in the cardiac cycle. The morphology of the QRS complex is much wider than the QRS complexes of beats 1, 2, 3, and 7. The R - R interval between beats 3 and 4 is about 37 small boxes, this corresponds to a rate of about 40 beats/min. Since the inherent rate of the ventricles is 20 - 40 bpm, complex 4 falls within the upper limits of an escape beat of ventricular origin. Complexes 5 and 6 occur at the same rate.
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