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Pregnancy and Blood Pressure

Routine blood pressure and urine protein check up during ante natal care is for the early detection of a condition known as pre-eclampsia, also known as pre-eclamptic toxaemia, or just toxaemia.

Pre-eclampsia is a serious pregnancy disorder of pregnancy characterised by high maternal blood pressure, protein in the urine and severe fluid retention. It is a fairly common complication of pregnancy and one to two per cent of cases are severe enough to threaten the lives of both the mother and her unborn child.

There is no cure for the condition, except delivery of the baby.

Risk Factors

  • First pregnancy or a new partner
  • Family History
  • Diabetes Mellitus
  • Multiple pregnancy
  • Obesity
  • Extremes of maternal age
  • Preexisting Hypertension
  • Hydatidiform mole (A relatively rare mass or tumour that can form within the uterus at the beginning of a pregnancy)
  • Hydrops Fetalis

The mother's blood pressure usually returns to normal as soon as the baby is delivered.

Signs & Symptoms

Pre-eclampsia can be asymptomatic, and may develop at any time after 20 weeks of pregnancy but commonly develops during the later stages of pregnancy.

Pre-eclampsia most commonly causes high blood pressure and protein in the urine. Some advanced symptoms include

  • Hand and face swelling
  • Headache
  • Visual disturbance
  • Upper abdominal pain
  • Dizziness
  • Nausea & Vomiting

Complications for fetus

The placenta in uterus is a special organ that allows oxygen and nutrients to pass from the mother's bloodstream to the baby, and waste products (such as carbon dioxide) to pass from the baby's bloodstream to the mother. In pre-eclampsia, blood flow to the placenta is obstructed. In severe cases, the baby can be gradually starved of oxygen and nutrients, which may affect its growth. All these lead to

  • Neonatal Asphyxia (low oxygen)
  • Neonatal Hypoglycemia (Low glucose)
  • Intrauterine Growth Restriction (Low birthweight)

This growth restriction threatens the life of the baby and it may be necessary to deliver the baby prematurely. Another serious complication of pre-eclampsia is abruption, which means the placenta separates from the uterine wall and the woman experiences vaginal bleeding and abdominal pain. This is a medical emergency.


Since Pre-eclampsia can be asymptomatic, regular ante natal check up is advised. Bed rest, in early stages may control the situation, sometimes medication is needed to control blood pressure. But if the signs of toxaemia and poor fetal growth persist, it will often be necessary to induce labour and get the baby born a week or 2 early.

Locations & Directions

Brisbane 4th Floor Alexandra House
201 Wickham Terrace
Spring Hill, QLD 4000
Tel : (07) 3839-5383
Facsimile : (07) 3831-8915
Website: www.ginopecoraro.com.au