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What to expect during pregnancy

What is Preeclampsia?


Preeclampsia is a condition unique to human pregnancy. It is a disorder which usually develops in the second half of gestation and occurs in around 5-8% of all pregnancies. Preeclampsia can also develop early in pregnancy if it is severe or may not become an issue until during labor or just after the baby has been born.

Preeclampsia is more common in women who are having their first baby. Some studies cite it occurring in up to as much as 10% of pregnancies, but whatever the statistics, it is the most common serious medical problem of pregnancy. It is important for all pregnant women to be checked during ante-natal appointments for any symptoms which could indicate them having preeclampsia. Without treatment, it can sometimes develop into eclampsia which has the potential to cause significant complications for both a mother and her baby.

Symptoms of Preeclampsia

  • Elevated blood pressure.
  • The presence of protein in the urine.
  • Swelling – also known as edema, in the mother. This is particularly obvious in the hands, feet and legs.

What Happens in Preeclampsia?

In cases where the preeclampsia is only mild, there are usually no ill effects on either the mother or her baby. But if the blood flow through the placenta has been reduced and its function affected, the baby’s growth may potentially be impacted and the baby will not be as big or weigh as much as if preeclampsia was not present. A reduction in the oxygen and nutrients the baby receives can compromise its overall growth; this is known as Intra Uterine Growth Restriction (IUGR).

If the mother’s preeclampsia is severe, there is a risk of placental abruption, where the placenta shears away from the uterine wall. Premature delivery and even foetal death can occur in cases where the blood pressure becomes dangerously high.

Timing is the critical issue with preeclampsia. Balancing the baby’s growth and readiness for delivery, whilst not compromising the mother’s health is the major issue. The risk of death to a baby from maternal preeclampsia is not so much from the disorder itself, but because of prematurity complications.

Risk Factors for Developing Preeclampsia

  • Women who are pregnant with more than one baby.
  • Women who are pregnant with their first baby – Primigravidas.
  • Older women, particularly those over 40 years of age.
  • Women with a history of pre-existing hypertension (essential hypertension).
  • Women who are diabetic or have pre-existing kidney disease.
  • Women who have had a previous pregnancy and been diagnosed with preeclampsia.
  • Preeclampsia seems to have a genetic component and run in families.
  • Poor maternal diet to the point where nutritional deficiencies are occurring.
  • Gum or periodontal disease is thought to be connected in some way.
  • Being overweight or obese during pregnancy.

Why Does Preeclampsia Happen?

It is not clearly understood why preeclampsia occurs in some women and not in others. Although the risk factors are fairly consistent, they are not prescriptive. It seems there may be an issue with a mother’s inflammatory response where her body’s immune system reacts to the presence of her baby and the placenta.

What is the Cure for Preeclampsia?

The only treatment for this condition is delivery of the baby. If the woman’s blood pressure becomes so high that there is a risk to her own health or her baby’s, delivery by caesarean section is usually attended. If the baby is going to be premature, steroid medication to assist with the baby’s lung maturity is given to the mother. Occasionally treatment with anti-hypertensive medication will buy enough time for the baby to remain in utero for as long as possible.

If the blood pressure is only slightly or moderately elevated, the mother may be prescribed oral anti-hypertensive medication and daily blood pressure monitoring. She may be able to do this herself with a portable blood pressure machine. The main objective of preeclampsia management is to monitor the mother’s blood pressure and the baby’s heart beat. With bed rest and a lowering of physical activity, there is usually a reduction in the blood pressure to within normal limits. Monitoring is also necessary to ensure that preeclampsia is not progressing to eclampsia.

When does Blood Pressure become too High?

By definition, non-severe hypertension is classified as having a blood pressure reading of 140-159/90-109. Severe hypertension being defined as a top or systolic reading of more than or equal to 160 or a bottom reading of more than or equal to 110.

When to Seek Medical Help?

Occasionally, preeclampsia escalates to a dangerous level. This can occur in a relatively short period of time and although it is uncommon its effects are so significant that it is worthwhile being aware of them. Seek medical assessment if you develop any of the following signs or symptoms:

  • A sudden swelling of the hands, face or feet which causes you to gain weight because of fluid retention.
  • A pain in the region of your stomach which may feel like very bad ingestion. The pain may also extend across the ribs.
  • A bad headache which does not respond to standard analgesics and rest.
  • Blurring of your vision or being unable to see clearly. Seeing flashing lights is also a warning sign.
  • Nausea and vomiting.
  • Feeling as if your heart is racing or has an abnormal beat.
  • A sense that something is just not right with you or your baby.
  • A change in the volume of urine you normally produce.

What Happens after the Baby is Born?

Monitoring of a mother’s blood pressure continues in the early hours after delivery. If her blood pressure has been very high, medication is given and then prescribed routinely to keep it within normal limits. Regular monitoring is important. In the majority of cases, a mother’s blood pressure returns to a normal range once her baby is delivered.

There has been some evidence to support the findings that women who have had preeclampsia during their pregnancy are at a greater risk of cardiovascular disease later in life. Maintaining a healthy weight and lifestyle throughout life helps to reduce the likelihood of long term problems.

Prevention of Preeclampsia

At present there are no real prevention strategies which are thought to be effective. In some women a daily dose of aspirin when taken from around the 14th week of pregnancy is thought to be preventative. But this would only have a positive effect on a small number of women and it is difficult to select which ones this would be.

There is also some evidence to support the idea that an addition of calcium supplements in a mother’s diet may be useful in preventing preeclampsia

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The information published herein is intended and strictly only for informational, educational, purposes and the same shall not be misconstrued as medical advice. If you are worried about your own health, or your child’s well being, seek immediate medical advice. You should never delay seeking medical advice, disregard medical advice, or discontinue medical treatment because of information on this website. Kimberly-Clark and/ or its subsidiaries assumes no liability for the interpretation and/or use of the information contained in this article. Further, while due care and caution has been taken to ensure that the content here is free from mistakes or omissions, Kimberly-Clark and/ or its subsidiaries makes no claims, promises or guarantees about the accuracy, completeness or adequacy of the information here, and to the extent permitted by law, Kimberly-Clark and/ or its subsidiaries do not accept any liability or responsibility for claims, errors or omissions.



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