Hyperglycemia is a condition in which you have high blood sugar levels. Most cases of hyperglycemia have a link with diabetes mellitus, therefore, in most cases, these terms may be used interchangeably.
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Hyperglycemia is a condition in which you have high blood sugar levels. Most cases of hyperglycemia have a link with diabetes mellitus, therefore, in most cases, these terms may be used interchangeably.
Diabetes mellitus is a metabolic disorder that occurs when the body does not produce enough insulin or there is high insulin resistance. Insulin is a hormone that regulates your blood glucose by pushing glucose into your cells. And once these problems with insulin occur, blood sugar cannot be regulated. This can lead to elevated blood sugar levels, or hyperglycemia.
The criteria for hyperglycemia are as follows:
Hyperglycemia, when controlled, is typically a benign condition. However, certain events can push the body into glucose dysregulation. These cases can be life-threatening, especially when intervention is delayed.
The two emergency cases that can result from an elevated blood glucose are diabetic ketoacidosis and hyperosmolar hyperglycemic syndrome. These happen when blood glucose levels reach 250mg/dl. Let’s talk about each of them briefly.
Diabetic ketoacidosis, or DKA, is an acute, serious condition that can happen to people with uncontrolled hyperglycemia when substances called “ketones” accumulate in their blood.
Under normal circumstances, the body uses glucose to produce energy. However, people with diabetes who do not usually have enough insulin are unable to absorb and use glucose. As a result, the body begins to metabolize fat as a source of energy.
Ketones are a byproduct of fat metabolism, and too much ketones can be harmful to the body. DKA is more likely to develop in patients with type 1 diabetes mellitus.
DKA can present as:
Hyperosmolar hyperglycemic syndrome or HHS, on the other hand, usually evolves over several days to weeks, in contrast to DKA that develops within a 24-hour period. In addition, HHS is more common in patients with type 2 diabetes mellitus. Unlike in DKA, patients with HHS do not have elevated ketone bodies in their blood.
What happens in HHS? Under normal circumstances, all of the glucose that goes through the kidneys is reabsorbed back into the body. When the blood glucose level reaches approximately 180mg/dl, the blood becomes saturated with glucose, and further reabsorption is halted. The glucose that remains in the kidney is therefore excreted in the urine. This increases the saturation of urine, and a signal is sent to the kidneys to increase water excretion to reverse the supersaturation. Because of the increase in water excretion, glucose concentration in the blood increases, leading to severe hyperglycemia.
Because of an increase in urination, patients with HHS are more severely dehydrated than patients with DKA. They may show signs of dehydration upon presentation, such as increased heart rate, dry lips and oral mucosa, sunken eyes, and decreased skin turgor. Other signs and symptoms of HHS include:
A particular event that abruptly increases blood glucose levels usually precedes both DKA and HHS. The most common precipitating events leading to DKA and HHS include:
As mentioned, both DKA and HHS are emergency situations. Fortunately, both conditions are reversible. Patients with hyperglycemia suspected of having DKA or HHS must be brought to the nearest hospital for prompt evaluation and intervention. Appropriate treatment for both conditions includes strict glucose monitoring and control, fluid resuscitation, and treatment of the underlying condition.
Severe hyperglycemia can lead to life-threatening conditions. Consult with your doctor to learn how to prevent this from happening.
Learn more about Diabetes here.
Hello Health Group does not provide medical advice, diagnosis or treatment.
Hyperosmolar Hyperglycemic Syndrome, https://my.clevelandclinic.org/health/diseases/21147-hyperosmolar-hyperglycemic-syndrome, Accessed October 21, 2021
Diabetic hyperosmolar syndrome, https://www.mayoclinic.org/diseases-conditions/diabetic-hyperosmolar-syndrome/symptoms-causes/syc-20371501, Accessed October 21, 2021
Hyperglycemia (High Blood Glucose), https://www.diabetes.org/healthy-living/medication-treatments/blood-glucose-testing-and-control/hyperglycemia , Accessed October 21, 2021
Hyperglycemia, https://www.ncbi.nlm.nih.gov/books/NBK430900/, Accessed October 21, 2021
Hyperglycemia, https://medlineplus.gov/hyperglycemia.html, Accessed October 21, 2021
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