Highs and Lows: High-Yield Non-Diabetic Endocrine Emergencies-Slides

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This comprehensive lecture by Dr. Lily Ackermann focuses on high-yield, non-diabetic endocrine emergencies including adrenal insufficiency, thyroid storm, myxedema coma, and severe calcium imbalances.<br /><br />Adrenal insufficiency is a potentially fatal condition triggered by stressors like trauma or infection, characterized by symptoms of weakness, hypotension, hyponatremia, and hyperkalemia. Primary causes include autoimmune destruction, infections, and malignancies, while secondary causes stem from pituitary disorders and chronic steroid use. Immediate treatment requires high-dose intravenous hydrocortisone and fluid resuscitation, with mineralocorticoid replacement added later in primary cases. Diagnosing acute adrenal crisis relies on clinical presentation rather than ACTH testing, while chronic insufficiency is diagnosed by morning cortisol and ACTH levels. Management controversies include steroid use in critical illness and perioperative settings.<br /><br />Thyroid storm represents a severe exacerbation of hyperthyroidism with high fever, tachycardia, central nervous system symptoms, and multi-organ dysfunction. It is diagnosed clinically and precipitated by infections, surgery, withdrawal of antithyroid drugs, and iodine exposure. Treatment targets inhibition of new thyroid hormone synthesis (thionamides, especially PTU), hormone release blockade (iodine after antithyroid drugs), peripheral conversion inhibition (PTU, corticosteroids), and beta-blockade. Supportive care includes managing precipitating causes, hyperthermia, and cardiovascular complications. PTU is preferred in thyroid storm for its dual action, though recent studies show no clear mortality advantage over methimazole.<br /><br />Myxedema coma is a life-threatening decompensation of hypothyroidism with hypothermia, hypoventilation, bradycardia, hyponatremia, and altered mental status, often precipitated by infection. Treatment involves thyroid hormone replacement (IV levothyroxine, sometimes T3), stress-dose glucocorticoids, supportive care for hypoglycemia, hypothermia, and respiratory failure, and treatment of underlying illness.<br /><br />Severe hypercalcemia, often due to malignancy or primary hyperparathyroidism, requires aggressive hydration, bisphosphonates, calcitriol, and sometimes dialysis. Hypocalcemia is managed based on severity with IV calcium for acute symptoms and oral supplements plus calcitriol for chronic cases. Monitoring ionized calcium and electrolytes is crucial.<br /><br />Overall, early recognition, appropriate diagnostic evaluation, and prompt, tailored treatment are critical to improving outcomes in these endocrine emergencies. Patient education and preventive measures, such as managing chronic disorders and anticipating surgical risks, are paramount.
Keywords
Adrenal insufficiency
Thyroid storm
Myxedema coma
Hypercalcemia
Hypocalcemia
Endocrine emergencies
Hydrocortisone treatment
Thionamides
Thyroid hormone replacement
Calcium imbalance management