ECG tracing shows a heart rate of 100 bpm, with a regular rhythm and a premature ventricular contraction (PVC) every 5th beat. The QRS complex is 0.12 seconds.
Sinus tachycardia
ECG tracing shows a heart rate of 40 bpm, with a regular rhythm and a widened QRS complex (0.20 seconds). There are no discernible P waves. part b practice interpreting electrocardiograms answer key
Sinus tachycardia is characterized by a heart rate greater than 100 bpm, with a regular rhythm and a P wave preceding each QRS complex. The PR interval and QRS complex duration are within normal limits. ECG tracing shows a heart rate of 100