Gestational diabetes

Gestational Diabetes: Sugar test in pregnancy


Gestational diabetes is a condition in which the level of sugar in the blood of a woman increases during pregnancy. This happens in about 4% of pregnancies.

It is usually diagnosed in the later stages of pregnancy and often occurs in women who have not had diabetes before.

Gestational diabetes is caused by hormonal and other changes during pregnancy. Our body converts food into energy with the help of insulin.

When insulin levels are low, or the body cannot use insulin effectively (ie, insulin resistance), blood glucose levels rise.

Gestational diabetes should be diagnosed and treated at the earliest as it can lead to complications for both the mother and the baby.

This increases the risk of pre-eclampsia, depression and the need for surgery.

It can be avoided by keeping the weight under control and by exercising regularly before pregnancy.

Gestational diabetes can be treated by proper diet. Regular exercise can contribute to controlling glucose.

Normal blood sugar level in pregnancy

Its different range is seen by measuring blood sugar twice on an empty stomach and after eating food. In both cases, blood sugar needs to be in the normal range.

What should be the amount of blood sugar during pregnancy, it is mentioned below.

StateNormal range
Empty stomach60-90 mg/dl
Before meals 60-105 mg/dL
1 hour after a meal 130-140 mg/dL
2 hours after a mealless than 120 mg/dL
2 PM to 6 AM 60-90 mg/dL

Symptoms and diagnosis of sugar in pregnancy

What are the symptoms of gestational diabetes?

Gestational diabetes usually does not cause any symptoms or signs. This is why it is so important to have a screening test. Sometimes symptoms like –

  • increased thirst and
  • desire for frequent urination can be a sign of this.

How is gestational diabetes diagnosed?

Gestational diabetes is diagnosed by a blood test. Most pregnant women are tested between the 24th and 28th weeks of pregnancy. But if you are at risk of getting it, your doctor will test it early in pregnancy.

This can be confirmed by a blood test. In the screening test, you are given a sweet drink. This is done because it helps to test the level of glucose in your blood after an hour.

If the screening test doesn’t come back normal, you may need to have additional tests. Another test for this is usually the Oral Glucose Tolerance Test (OGTT).

For this test, your baseline blood sugar level is checked and then measured after 1, 2, and sometimes three hours later.

Glycosylated hemoglobin or hemoglobin A1c is also a type of test. This test is used to check blood sugar levels in diabetic patients over a long period of time.

Hemoglobin A1c level is an average measure of blood glucose levels over the past few months as well.

Pregnancy Test: Confirm your pregnancy in early stage
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Causes of gestational diabetes in Pregnancy

Gestational diabetes may develop due to various reasons and can make women resistant to insulin. It is more often in pregnancy because of certain changes, such as hormonal and/or other changes that occur in the body during pregnancy.

Insulin is a hormone that is produced by some cells in the pancreas. This hormone helps the body effectively metabolize glucose which is then used by the body in the form of energy.

When insulin levels are low or the body is unable to use insulin properly (insulin resistance), the level of glucose in the blood rises.

It is normal to have some degree of insulin resistance and impaired glucose tolerance in late pregnancy. This factor is alone enough to cause gestational diabetes.

Below are some factors that increase the risk of getting gestational diabetes –

  • Obesity.
  • Having a history of gestational diabetes in a previous pregnancy.
  • The birth of an overweight baby (more than 4 kg) in a previous pregnancy.
  • Having a parent or sibling suffering from type 2 diabetes.
  • Suffering from Polycystic Ovary Syndrome (PCOS).
  • Already suffering from sugar.

Treatment for gestational diabetes

Getting proper treatment for gestational diabetes is important because studies have shown that problems and complications are less likely to occur when blood sugar levels are normal.

Gestational diabetes is treated by maintaining proper dietary habits. Regular exercise also helps to regulate glucose production in the body.

Nutritional modification is the mainstay of treatment and has helped many women achieve adequate glucose control by following a balanced nutrition plan.

Testing your blood glucose level at home after a meal can help you determine whether your glucose level is normal. This test should be done at least four times per day.

You may also be asked to have a urine test to check the number of ketones (a substance made when the body digests fat) in the urine. Ketones are more effective when the body is unable to use glucose as energy.

If diet and exercise are not enough to keep blood sugar levels under control, insulin therapy may prove to be a better option. In the U.S., insulin is the only officially approved treatment for gestational diabetes.

However, in some patients, doctors use drugs to control blood sugar. As the pregnancy progresses, the need for insulin may change and may need to be supplied by insulin supplements.

Gestational diabetes complications in mother and baby

Disadvantages of sugar in pregnancy for the mother:

  • Women with gestational diabetes are more likely to have a baby born by cesarean section (C-section) as the baby is larger in size.
  • Women with gestational diabetes have an increased risk of pre-eclampsia. In this stage, problems like high blood pressure and protein release in the urine start in the expectant mother.
  • Women with diabetes during pregnancy have a higher risk of developing type 2 diabetes after pregnancy.
  • Women having a history of elevated sugar in early pregnancy may have a higher risk of birth defects and miscarriage than those who do not have sugar.

Disadvantages of sugar in pregnancy for the baby

Women with gestational diabetes usually give birth to healthy babies with proper treatment. However, if the mother’s blood glucose level is found to be consistently elevated during pregnancy, the fetus will also have elevated levels.

  • High levels of glucose in the blood can cause the fetus to be larger than normal, potentially complicating the delivery process. There is also a risk of the baby having low blood glucose (hypoglycemia) soon after birth.
  • If gestational diabetes is not treated properly, there is an increased risk of jaundice and respiratory problems such as respiratory distress syndrome in newborns.

There is also an increased risk of death before or after birth, as well as an increased risk of being overweight and developing type 2 diabetes later in life.

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