This may include: weekly appointments if hypertension is poorly controlled appointments every 2 to 4 weeks if hypertension is well-controlled. [2010, Timing of birth 1.3.14 Do not offer planned early birth before 37 weeks to women with chronic hypertension whose blood pressure is lower than 160/110 mmHg, with or without antihypertensive treatment, unless there are other medical 1.3.15 For women with chronic hypertension whose blood pressure is lower than 160/110 mmHg after 37 weeks, with or without antihypertensive treatment, timing of birth and maternal and fetal indications for birth should be agreed between the woman and the senior obstetrician. 1.3.16 If planned early birth is necessary (see recommendation 1.5.7), offer a course of antenatal corticosteroids and magnesium sulfate if indicated, in line with the NICE guideline on preterm labour and birth. [2010, amended Postnatal investigation, monitoring and treatment 1.3.17 In women with chronic hypertension who have given birth, measure blood pressure: daily for the first 2 days after birth at least once between day 3 and day 5 after birth as clinically indicated if antihypertensive treatment is changed after birth. 1.3.18 In women with chronic hypertension who have given birth: aim to keep blood pressure lower than 140/90 mmHg continue antihypertensive treatment, if required (see section 1.9 for choice of antihypertensive during the postnatal period) offer a review of antihypertensive treatment 2 weeks after the birth, with their GP or specialist. [2010, amended 2019] 1.3.19 If a woman has taken methyldopa to treat chronic hypertension during pregnancy, stop within 2 days after the birth and change to an alternative antihypertensive treatment (see section 1.9 for choice of antihypertensive during the postnatal period). [2010, amended 2019] 1.3.20 Offer women with chronic hypertension a medical review 6 8 weeks after the birth with their GP or specialist as appropriate. 