P-R interval

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Related to P-R interval: P-R segment, PQ interval

P-R interval

In the electrocardiogram, the period between the onset of the P wave and the beginning of the QRS complex.

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.

Association between ECG variables and body mass index: a cross-sectional study

[19] 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.

Study of ECG changes 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.