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Glucose is the main source of energy for the brain, and a number of mechanisms are in place to prevent hypoglycemia and protect energy supply to the brain. [ 3 ] [ 17 ] The body can adjust insulin production and release, adjust glucose production by the liver , and adjust glucose use by the body.
Reactive hypoglycemia, postprandial hypoglycemia, or sugar crash is a term describing recurrent episodes of symptomatic hypoglycemia occurring within four hours [1] after a high carbohydrate meal in people with and without diabetes. [2] The term is not necessarily a diagnosis since it requires an evaluation to determine the cause of the ...
Ketotic hypoglycemia refers to any circumstance in which low blood glucose is accompanied by ketosis, the presence of ketone bodies (such as beta-hydroxybutyrate) in the blood or urine. This state can be either physiologic or pathologic; physiologic ketotic hypoglycemia is a common cause of hypoglycemia in children, often in response to ...
[20] [21] Decrements in insulin, increments in glucagon, and, absent the latter, increments in epinephrine are the primary glucose counterregulatory factors that normally prevent or (more or less rapidly) correct hypoglycemia. In insulin-deficient diabetes (exogenous) insulin levels do not decrease as glucose levels fall, and the combination of ...
For people with insulin-requiring diabetes, hypoglycemia is one of the recurrent hazards of treatment. It limits the achievability of normal glucoses with current treatment methods. Hypoglycemia is a true medical emergency, which requires prompt recognition and treatment to prevent organ and brain damage.
Mechanisms that restore satisfactory blood glucose levels after extreme hypoglycemia (below 2.2 mmol/L or 40 mg/dL) must be quick and effective to prevent extremely serious consequences of insufficient glucose: confusion or unsteadiness and, in the extreme (below 0.8 mmol/L or 15 mg/dL) loss of consciousness and seizures.
Whipple's triad is a collection of three signs (called Whipple's criteria) that suggests that a patient's symptoms result from hypoglycaemia that may indicate insulinoma.The essential conditions are symptoms of hypoglycaemia, low blood plasma glucose concentration, and relief of symptoms when plasma glucose concentration is increased.
Manifestations of hyperinsulinemic hypoglycemia vary by age and severity of the hypoglycemia. In general, most signs and symptoms can be attributed to (1) the effects on the brain of insufficient glucose (neuroglycopenia) or (2) to the adrenergic response of the autonomic nervous system to hypoglycemia. A few miscellaneous symptoms are harder ...