Stoelting's Anesthesia and Co-Existing Disease · 8th Edition
Endocrine Disease
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ⓘ This audio and summary are simplified educational interpretations and are not a substitute for the original text.
Key Takeaways
- Intraoperative glucose targets should remain between 140 and 180 mg/dL in diabetic patients to balance hyperglycemia complications with hypoglycemia risk during surgery.
- Diabetic autonomic neuropathy increases vulnerability to silent myocardial ischemia and perioperative hemodynamic instability requiring enhanced cardiac monitoring.
- Hyperthyroid patients must achieve euthyroid status preoperatively with antithyroid drugs and beta-blockers to prevent life-threatening thyroid storm during anesthesia.
- Pheochromocytoma demands mandatory alpha-blockade before surgery to prevent acute hypertensive crisis triggered by catecholamine release during tumor manipulation.
- Acromegaly causes significant airway obstruction from soft tissue proliferation necessitating careful preoperative airway evaluation and preparation for difficult intubation.
- Adrenal insufficiency requires perioperative glucocorticoid supplementation in at-risk patients to prevent cardiovascular collapse during the stress response to surgery.
Chapter SummaryWhat this audio overview covers
Endocrine dysfunction presents profound challenges in the perioperative setting, requiring anesthesiologists to understand both the underlying pathophysiology and specific management strategies for each disorder. Diabetes mellitus, the most prevalent endocrine disease, demands careful glucose management with target intraoperative levels between 140 and 180 mg/dL, while recognizing that autonomic neuropathy can precipitate silent myocardial ischemia and hemodynamic instability during anesthesia. Thyroid disorders necessitate preoperative optimization, with hyperthyroid patients requiring achievement of euthyroid status through antithyroid medications and beta-blockade to prevent thyroid storm, while hypothyroid patients present with increased anesthetic sensitivity and potential airway compromise from tissue swelling. Adrenal pathology encompasses pheochromocytoma management with mandatory preoperative alpha-blockade to prevent intraoperative hypertensive crisis, Cushing syndrome with its associated muscle weakness and electrolyte abnormalities, and adrenal insufficiency requiring perioperative glucocorticoid supplementation in at-risk patients. Parathyroid dysfunction creates metabolic derangements affecting neuromuscular function, with hyperparathyroidism causing hypercalcemia and osteoporotic bone fragility, and hypoparathyroidism producing hypocalcemia with neuromuscular irritability and laryngospasm risk. Pituitary disorders such as acromegaly present significant airway management challenges due to soft tissue overgrowth, while diabetes insipidus and syndrome of inappropriate antidiuretic hormone secretion require meticulous fluid and electrolyte monitoring throughout the perioperative period. Understanding the physiological consequences of each condition, appropriate preoperative preparation, and vigilant intraoperative monitoring form the cornerstone of safe anesthetic care in these high-risk patients.