Diabetic Ketoacidosis (DKA) |
- Polyuria, polydipsia, nausea, vomiting, abdominal pain, and altered mental status.
- Signs of dehydration, Kussmaul respirations (deep, rapid breathing), and fruity breath odor.
- Often occurs in patients with type 1 diabetes, but can also occur in type 2 diabetes under stress conditions.
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- Elevated blood glucose (>250 mg/dL), ketonemia or ketonuria, and anion gap metabolic acidosis (low bicarbonate, pH <7.3).
- Serum electrolytes showing hyperkalemia (but total body potassium is depleted) and hyponatremia.
- Blood gas analysis showing metabolic acidosis.
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- IV fluids (normal saline) for rehydration.
- IV insulin infusion to reduce blood glucose and stop ketogenesis.
- Electrolyte replacement, particularly potassium, as insulin therapy may cause hypokalemia.
- Monitor blood glucose, electrolytes, and acid-base status closely until resolved.
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Hyperosmolar Hyperglycaemic State (HHS) |
- Severe hyperglycemia, dehydration, altered mental status, and weakness.
- Absent or mild ketosis and no significant acidosis.
- Commonly occurs in elderly patients with type 2 diabetes, often triggered by infection, stroke, or other acute illnesses.
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- Extremely high blood glucose levels (>600 mg/dL) and high serum osmolality (>320 mOsm/kg).
- Serum electrolytes showing hypernatremia, and mild or absent ketonemia.
- Blood gas analysis typically showing normal or near-normal pH.
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- IV fluids (initially normal saline, then switch to hypotonic saline once stabilized) for rehydration.
- IV insulin to gradually lower blood glucose.
- Electrolyte management, particularly potassium and sodium.
- Monitoring and treatment of underlying precipitating factors (e.g., infection).
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Thyroid Storm |
- Severe hyperthyroidism symptoms: tachycardia, fever, hypertension, agitation, delirium, and gastrointestinal symptoms (e.g., nausea, vomiting, diarrhoea).
- May progress to heart failure, shock, and coma if untreated.
- Often triggered by infection, surgery, trauma, or discontinuation of antithyroid medications in patients with Graves' disease or toxic multinodular goiter.
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- Elevated free T4 and T3 levels with suppressed TSH.
- Electrolytes and liver function tests may be abnormal.
- Clinical diagnosis based on symptoms and history; thyroid function tests confirm the diagnosis.
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- Beta-blockers (e.g., propranolol) to control tachycardia and reduce peripheral effects of thyroid hormones.
- Antithyroid drugs (e.g., propylthiouracil, methimazole) to inhibit thyroid hormone synthesis.
- IV glucocorticoids (e.g., hydrocortisone) to reduce T4 to T3 conversion and manage adrenal insufficiency.
- Supportive care with IV fluids, cooling measures, and treatment of precipitating factors.
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Myxedema Coma |
- Severe hypothyroidism symptoms: hypothermia, bradycardia, hypotension, altered mental status, and respiratory depression.
- May present with hyponatremia, hypoglycemia, and pericardial or pleural effusion.
- Commonly occurs in elderly patients with untreated or poorly controlled hypothyroidism, often precipitated by infection, cold exposure, or medications.
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- Low free T4 and T3 levels with elevated TSH (primary hypothyroidism).
- Hyponatremia, hypoglycemia, and elevated serum creatine kinase (CK).
- Arterial blood gas may show respiratory acidosis or hypoxia.
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- IV thyroid hormone replacement (e.g., levothyroxine, and sometimes liothyronine).
- IV glucocorticoids (e.g., hydrocortisone) to treat possible adrenal insufficiency.
- Supportive care with warming measures, IV fluids, and respiratory support as needed.
- Treat underlying causes (e.g., infection, discontinuation of thyroid medication).
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Adrenal Crisis |
- Severe hypotension, shock, and hypoglycemia.
- Nausea, vomiting, abdominal pain, and confusion.
- History of adrenal insufficiency (e.g., Addison's disease) or long-term steroid use with abrupt cessation.
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- Hyponatremia, hyperkalemia, hypoglycemia, and elevated BUN/creatinine.
- Low cortisol levels, often with elevated ACTH if primary adrenal insufficiency.
- ACTH stimulation test may be performed if diagnosis is uncertain, though treatment should not be delayed.
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- Immediate IV glucocorticoids (e.g., hydrocortisone) to replace deficient cortisol.
- IV fluids with dextrose to correct hypotension, dehydration, and hypoglycemia.
- Electrolyte management, particularly addressing hyperkalemia and hyponatremia.
- Treat underlying precipitating factors (e.g., infection, stress).
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Phaeochromocytoma Crisis |
- Severe hypertension, tachycardia, palpitations, and headache.
- Diaphoresis, tremors, and anxiety; may progress to hypertensive emergency with end-organ damage.
- Triggered by surgery, anesthesia, stress, or medications in patients with a known or occult pheochromocytoma.
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- Elevated plasma free metanephrines or urinary catecholamines.
- CT or MRI of the abdomen to locate the adrenal tumour.
- ECG may show arrhythmias or signs of myocardial ischaemia.
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- Alpha-blockers (e.g., phenoxybenzamine) followed by beta-blockers (e.g., propranolol) to control blood pressure and heart rate.
- IV fluids to maintain adequate intravascular volume.
- Surgical resection of the tumour once the patient is stabilized.
- Avoidance of triggering factors and careful preoperative preparation.
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Hypoglycemia |
- Symptoms of adrenergic response: sweating, tremors, palpitations, anxiety.
- Neuroglycopenic symptoms: confusion, seizures, altered consciousness, and coma.
- Commonly seen in patients with diabetes on insulin or oral hypoglycaemic agents.
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- Blood glucose level <70 mg/dL; symptoms typically occur at lower levels.
- Serum insulin, C-peptide, and sulfonylurea levels may be assessed in recurrent or unexplained cases.
- Blood gas analysis may show metabolic acidosis in severe cases.
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- Immediate administration of oral glucose or IV dextrose.
- Glucagon injection if IV access is not available.
- Frequent monitoring of blood glucose levels and adjusting the dose of diabetic medications.
- Identify and address the underlying cause to prevent recurrence.
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Hypertensive Crisis due to Hyperaldosteronism |
- Severe hypertension, headache, muscle weakness, and fatigue.
- Hypokalemia, leading to muscle cramps, palpitations, and possibly arrhythmias.
- Common in patients with primary hyperaldosteronism (e.g., Conn's syndrome).
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- Serum electrolytes showing hypokalemia and hypernatremia.
- Elevated plasma aldosterone concentration (PAC) with suppressed plasma renin activity (PRA).
- CT or MRI of the adrenal glands to identify adrenal adenoma or hyperplasia.
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- Spironolactone or eplerenone to block the effects of aldosterone.
- Potassium supplementation and dietary sodium restriction.
- Surgical resection of adrenal adenoma if identified and confirmed as the source.
- Manage hypertension with appropriate antihypertensive therapy.
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