The ECG criteria to diagnose sinus arrhythmia is a variation of the P-P interval, from one beat to the next, of at least 0.12 seconds, or 120 milliseconds. Sinus arrhythmia ― if not in a young ...

or the ectopic PR interval will be prolonged. The ECG will show a premature, ectopic P wave and then no QRS complex afterward. When this occurs in a pattern of bigeminy, the interpreter may be ...

Department of Family Medicine, University of Washington, Seattle, Washington, USA Correspondence to Professor Jonathan A Drezner, Department of Family Medicine, University of Washington, P.O. Box ...

This new insight about the interrelation among PERED/weight, amplitude of ECG potentials, and durations of P waves, QRS complexes, and QTc intervals in patients with CHF can be immediately ...

At the time of ECG recording, all patients had urine toxicology negative for opioids, cocaine, and amphetamines, and none were taking other medications associated with Q-Tc interval prolongation.