Provide this advice in line with the NICE guideline on hypertension in adults. 1.3.7 Continue with existing antihypertensive treatment if safe in pregnancy, or switch to an alternative treatment, unless: sustained systolic blood pressure is less than 110 mmHg or sustained diastolic blood pressure is less than 70 mmHg or the woman has symptomatic hypotension. [2019] 1.3.8 Offer antihypertensive treatment to pregnant women who have chronic hypertension and who are not already on treatment if they have: sustained systolic blood pressure of 140 mmHg or higher or sustained diastolic blood pressure of 90 mmHg or higher. [2019] 1.3.9 When using medicines to treat hypertension in pregnancy, aim for a target blood pressure of 135/85 mmHg. [2019] 1.3.10 Consider labetalol to treat chronic hypertension in pregnant women. for women in whom labetalol is not suitable, or methyldopa if both labetalol and nifedipine[3] are not suitable. Base the choice on any pre-existing treatment, side-effect profiles, risks (including fetal effects) and the woman's preference. [2019] 1.3.11 Offer pregnant women with chronic hypertension aspirin[1] once daily from 12 weeks. [2019] 1.3.12 Offer placental growth factor (PlGF)-based testing to help rule out pre- eclampsia between 20 weeks and 36 weeks and 6 days of pregnancy, if women with chronic hypertension are suspected of developing pre- eclampsia. (See the NICE diagnostics guidance on PlGF-based testing to help diagnose suspected preterm pre-eclampsia). [2019, amended To find out why the committee made the 2019 recommendations on the treatment of chronic hypertension and how they might affect practice, see rationale and impact. Antenatal appointments 1.3.13 In women with chronic hypertension, schedule additional antenatal appointments based on the individual needs of the woman and her baby. This may include: weekly appointments if hypertension is poorly controlled appointments every 2 to 4 weeks if hypertension is well-controlled. 