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Diabetic Ketoacidosis / Endocrine physiology : USMLE Step 1
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- čas přidán 21. 03. 2023
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Diabetic Ketoacidosis : USMLE Step 1
Diabetic ketoacidosis (DKA) is a life-threatening complication of uncontrolled diabetes mellitus, typically occurring in patients with type 1 diabetes. Here are some important points to keep in mind about DKA for the USMLE Step 1 exam:
Pathophysiology:
DKA occurs when there is a lack of insulin, which leads to an increase in blood glucose levels. In the absence of insulin, the body cannot use glucose for energy, so it begins to break down fat for energy instead. This process leads to the production of ketones, which are acidic byproducts that accumulate in the blood and can cause metabolic acidosis.
Clinical presentation:
Patients with DKA typically present with symptoms such as nausea, vomiting, abdominal pain, and excessive thirst and urination. They may also have altered mental status, including confusion and lethargy. Physical examination may reveal signs of dehydration, such as dry mucous membranes and decreased skin turgor. Kussmaul respirations, which are deep and rapid respirations, may be present in an attempt to compensate for the metabolic acidosis.
Laboratory findings:
The diagnosis of DKA is confirmed by laboratory findings, including elevated blood glucose levels, low serum bicarbonate levels, and elevated serum ketone levels. Serum electrolytes may also be imbalanced due to dehydration and acidosis.
Management:
The management of DKA involves aggressive fluid and electrolyte replacement, typically with intravenous fluids and electrolytes. Insulin is also administered to lower blood glucose levels and promote the uptake of glucose by cells. In severe cases, bicarbonate may be administered to correct metabolic acidosis. Identification and treatment of any underlying precipitating factors, such as infection or medication noncompliance, is also important.
Complications:
Complications of DKA can include cerebral edema, hypokalemia, and hypoglycemia. Close monitoring and management of electrolytes and glucose levels are essential to prevent these complications.
In summary, DKA is a life-threatening complication of uncontrolled diabetes mellitus that results from a lack of insulin and the production of ketones. The diagnosis is confirmed by laboratory findings, and management involves aggressive fluid and electrolyte replacement, insulin administration, and identification and treatment of any underlying precipitating factors. Complications of DKA can be serious and require close monitoring and management.
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Dear Sir, I believe dka is associated with hypokalemia. Mechanism is increased diuresis increasing k+ excretion by kidneys. Sodium is either normal or slightly reduced.
This is what i was searching on youtube from last 30 minutes... Superb sir ❤
Great
Thanks Doc.
Well explained.
Very helpful video, Dildar Ahmed a Nurse from Pakistan ❤
🙏🙂
Nice video
Thanks
I dont like this black background