that the selection of antihypertensive treatment should depend
on experiences and knowledge of doctor who is treating the patient,
particularly in terms of the maternal and fetal effect of the drug. Although there is no clinical study that provides any evidence of how much reduction in blood pressure is considered to be optimal, many have suggested a target systolic blood pressure of 140-150 mmHg and diastolic blood pressure of 90-100 mmHg. In pregnant women who have experienced target organ damage, it is suggested to reduce the blood pressure to less than 140/90 mmHg until it reaches 120 and 80 mmHg.