A short PR interval can be seen when the AV node delay is bypassed, such as in Wolff-Parkinson-White syndrome or Lown-Ganong-Levine syndrome.

The rhythm is regular at a rate of 100 beats/min. A P wave occurs before each QRS complex (+) with a stable but short PR interval (0.12 sec). The PR interval is shorter than what would be expected ...

Within the first six months of agalsidase beta therapy, the patient's PR interval had returned to a normal value (132 msec; normal range, 120 to 200 msec), and the globotriaosylceramide level in ...

Genetics in Medicine - Correction of a short cardiac PR interval in a 12-year-old girl with late-onset Pompe disease following enzyme replacement therapy ...

The normal PR interval measures 0.12-0.20 seconds (120-200 milliseconds). A prolonged or shortened PR interval can indicate certain disease. When prolonged, a first degree AV block is present.