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Hypoglycemia is a condition in which the amount of blood glucose (sugar) in the blood is lower than normal (under 50 mg/dL).
Babies who are more likely to develop hypoglycemia include:
Babies born to diabetic mothers may develop hypoglycemia after delivery when the source of glucose (via the umbilical cord) is gone and the baby's insulin production metabolizes the existing glucose.
Small for gestational age or growth-restricted babies may have too few glycogen stores.
Premature babies, especially those with low birthweights, who often have limited glycogen stores (sugar stored in the liver) or an immature liver function.
Babies born under significant stress.
Babies who experience temperature instability (for instance, get cold) or when mothers were treated with certain drugs (for instance, terbutaline)
Infants of diabetic mothers
Babies who are large for their gestational age. This is associated with gestational diabetes, but also with forms of congenital hyperinsulinism
Hypoglycemia may be caused by conditions that:
Lower the amount of glucose in the bloodstream.
Prevent or lessen storage of glucose.
Use up glycogen stores (sugar stored in the liver).
Inhibit the use of glucose by the body.
Many different conditions may be associated with hypoglycemia in the newborn, including the following:
Inadequate maternal nutrition in pregnancy
Excess insulin produced in a baby of a diabetic mother
Severe hemolytic disease of the newborn (incompatibility of blood types of mother and baby)
Birth defects and congenital metabolic diseases
Cold stress (conditions that are too cold)
The brain depends on blood glucose as its main source of fuel. Too little glucose can impair the brain's ability to function. Severe or prolonged hypoglycemia may result in seizures and serious brain injury.
Symptoms of hypoglycemia may not be obvious in newborn babies. The following are the most common symptoms of hypoglycemia. However, each baby may experience symptoms differently. Symptoms may include:
Cyanosis (blue coloring)
Apnea (stopping breathing)
Hypothermia (low body temperature)
Poor body tone
The symptoms of hypoglycemia may resemble other conditions or medical problems. Always consult your baby's doctor for a diagnosis.
A simple blood test for blood glucose levels can diagnose hypoglycemia. Generally, a baby with low blood glucose levels will need treatment.
Specific treatment for hypoglycemia will be determined by your baby's doctor based on:
Your baby's gestational age, overall health, and medical history
Extent of the disease
Your baby's tolerance for specific medications, procedures, or therapies
Expectations for the course of the disease
Your opinion or preference
Treatment includes giving the baby a rapid-acting source of glucose. This may be as simple as giving a glucose and water mixture or formula as an early feeding. Or, the baby may need glucose given intravenously. The baby's blood glucose levels are closely monitored after treatment to see if the hypoglycemia occurs again.
There may not be any way to prevent hypoglycemia, only to watch carefully for the symptoms and treat as soon as possible. Mothers with diabetes can help minimize the amount of glucose that stresses the fetus by tightly controlling their blood glucose levels to maintain them in a normal range.
Bayhealth is Southern Delaware’s healthcare leader with hospitals in Dover and in Milford. Bayhealth provides a wide range of medical services, including cardiovascular, cancer, orthopaedics and rehabilitation, pediatrics, respiratory care, sleep care, surgical weight loss and women’s services.