P-R interval | definition of P-R interval by Medical dictionary
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In the electrocardiogram, the period between the onset of the P wave and the beginning of the QRS complex.
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References in periodicals archive
In the higher BMI category, there is a statistically significant increase in P-R interval
as well as QRS duration in both the sexes.
 The findings showed that smoking causes no appreciable change in ECG wave forms except P-R interval
. The present study showed decrease in QRS complex duration in smokers.
The P-R interval
following each sinus P wave is normal (0.16 s), and the QRS complexes, ST segments and T waves are normal.