What is the typical duration of the PR segment in an electrocardiogram?

The typical duration of the PR segment in an electrocardiogram is between 0.12 and 0.20 seconds, with the most ideal range being approximately 0.12 to 0.18 seconds. This duration represents the time taken for electrical impulses to travel from the atria through the atrioventricular (AV) node before reaching the ventricles. A PR segment duration falling within the specified range indicates normal conduction through the AV node.

This metric is important in assessing heart health, particularly in identifying conduction delays or other cardiac issues. Monitoring the PR segment duration helps clinicians evaluate normal electrical activity and is a critical factor in diagnosing various forms of heart disease. Understanding these specifications is crucial for professionals diagnosing and treating cardiovascular conditions.