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Hypoglycemia and Glucagon01:15

Hypoglycemia and Glucagon

Without prolonged fasting, healthy individuals maintain blood glucose levels above 3.5 mM due to a well-adapted neuroendocrine counterregulatory system that effectively prevents acute hypoglycemia, a potentially life-threatening condition. The primary clinical scenarios for hypoglycemia encompass diabetes treatment, inappropriate production of endogenous insulin or insulin-like substances by tumors, and the use of glucose-lowering agents in non-diabetic individuals. Notably, hypoglycemia in the...
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Hyperglycemia is an abnormally high blood glucose level. It is diagnosed by fasting glucose ≥126 mg/dL, 2-hour oral glucose tolerance test (or OGTT) ≥200 mg/dL, random glucose ≥200 mg/dL with symptoms, or HbA1c ≥6.5%. However, HbA1c results may be unreliable in certain conditions, such as anemia or hemoglobinopathies, and the diagnosis should be confirmed unless classic symptoms are present. Postprandial hyperglycemia is typically considered significant when glucose levels exceed 180 mg/dL two...
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Hypoglycemia is a blood glucose level below 70 mg/dL. It commonly occurs in individuals using insulin or insulin-secreting drugs, but may also arise in non-diabetic conditions. People with type 1 diabetes are at the highest risk because they depend on exogenous insulin. People with type 2 diabetes are also at risk, especially when treated with insulin or medications such as sulfonylureas, which increase insulin release regardless of blood glucose levels. It develops when insulin levels exceed...
Complications of Diabetes Mellitus01:22

Complications of Diabetes Mellitus

Diabetes mellitus is a chronic metabolic disorder characterized by persistent hyperglycemia due to insulin deficiency, resistance, or both. Prolonged hyperglycemia disrupts metabolic homeostasis and leads to acute and chronic complications.Acute ComplicationsAcute complications result from sudden metabolic imbalance.Diabetic ketoacidosis (DKA) mainly appears in type 1 diabetes but may also develop in type 2 diabetes, particularly under extreme stress. It arises from severe insulin deficiency,...
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Type 1 diabetes mellitus typically presents with rapid-onset symptoms due to the body’s inability to utilize glucose in the absence of insulin. Since insulin is required for glucose uptake into cells, its deficiency leads to hyperglycemia and cellular energy deprivation, resulting in characteristic clinical features.Polyuria and PolydipsiaOne of the earliest, most prominent symptoms is polyuria (excessive urination). When blood glucose concentrations rise above the renal threshold, the kidneys...
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Hyperosmolar Hyperglycemic State, or HHS, is a serious and life-threatening complication of type 2 diabetes mellitus. It is characterized by three main features: severe hyperglycemia, profound dehydration, and elevated serum osmolality, all occurring without significant ketoacidosis.HHS typically develops in older adults or individuals with limited access to fluids. This may result from illness, cognitive impairment, or medications such as diuretics or corticosteroids. These factors reduce...

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Hyperglycemic Clamp and Hypoglycemic Clamp in Conscious Mice
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Published on: January 26, 2024

Hyperglycemic emergencies in athletes.

Michael E Chansky1, Jillian G Corbett, Evan Cohen

  • 1Emergency Medicine and Internal Medicine, UMDNJ/Robert Wood Johnson Medical School, USA. chansky-michael@cooperhealth.edu

Clinics in Sports Medicine
|June 10, 2009
PubMed
Summary
This summary is machine-generated.

Managing blood glucose is crucial for adolescent athletes with diabetes mellitus to prevent emergencies like hyperglycemia and diabetic ketoacidosis during exercise. This review covers diabetes epidemiology, exercise responses, and emergency management in athletes.

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Area of Science:

  • Endocrinology
  • Sports Medicine
  • Adolescent Health

Background:

  • Diabetes Mellitus (DM) is a chronic condition impacting athletes.
  • Exercise can precipitate endocrine emergencies in diabetic individuals.
  • Hyperglycemic emergencies pose serious risks to athletes with DM.

Purpose of the Study:

  • To review the epidemiology of DM in athletes.
  • To compare physiological responses to exercise in diabetic versus non-diabetic individuals.
  • To detail the pathophysiology, clinical presentation, treatment, and prevention of hyperglycemic emergencies in athletic populations.

Main Methods:

  • Literature review of diabetes mellitus and exercise.
  • Analysis of physiological responses to physical activity.
  • Synthesis of information on hyperglycemic emergencies.

Main Results:

  • Exercise response differs significantly between diabetic and non-diabetic individuals.
  • Improper glucose management during exercise increases risk of endocrine emergencies.
  • Hyperglycemic emergencies, including diabetic ketoacidosis, are serious concerns.

Conclusions:

  • Effective glucose management is vital for athletes with DM.
  • Understanding exercise physiology in diabetes is key for prevention.
  • Prompt recognition and treatment of hyperglycemic emergencies are essential for athlete safety.