At what blood pressure measurement is chronic hypertension diagnosed before pregnancy?

Chronic hypertension is diagnosed when a person's blood pressure readings are consistently at or above 140/90 mmHg before pregnancy. This threshold is significant because it establishes the presence of hypertension prior to conception, distinguishing it from gestational hypertension, which occurs during pregnancy. The 140/90 mmHg criteria is widely used in clinical practice and establishes a clear benchmark for treatment and monitoring.

Understanding this classification is crucial for the management of hypertensive disorders during pregnancy, as chronic hypertension can lead to complications for both the mother and the developing fetus. It sets the foundation for monitoring and potential intervention throughout the pregnancy to mitigate risks associated with elevated blood pressure levels.