The normal PR interval is 0.12 to 0.20 seconds, or 120 to 200 milliseconds. Note that the PR interval can be altered by changing sympathetic and parasympathetic tone. Because of this, medications ...

The most common ECG finding of an acute pulmonary embolism ... Alternatively, if the PR interval is normal and the QRS duration is prolonged, then it is most likely second-degree type II Carotid ...

A routine ECG is obtained ... and V4-V6, so this is a normal sinus rhythm. The PR interval is constant (0.16 sec). The QRS complex duration is increased (0.16 sec) with a normal axis between ...

A 12-lead ECG is obtained ... each QRS complex (+) with a stable PR interval (0.16 sec). The P wave is positive in leads I, II, aVF, and V4-V6. This is a normal sinus rhythm.

ECG data were available from 137 patients (81.5%). Evidence of LVH was present in all but two patients. Short PR intervals were reported in up to 56.3% of the patients. 14 The normal PR interval ...