The number of individuals who had chronic hypertension or chronic high blood pressure during pregnancy doubled between 2008 and 2021 in the US, researchers said on Monday.  

Treatment rates for chronic hypertension during pregnancy remained relatively low but stable during the same time, with only about 60 per cent of the individuals receiving (filling prescriptions for) antihypertensive medications, according to the new research published in Hypertension, a peer-reviewed journal of the American Heart Association.