Ep 210 Decompensated Hypothyroidism Recognition and Management

Decompensated hypothyroidism presents a significant diagnostic challenge in the emergency department, frequently masquerading as sepsis or sedative overdose. Clinicians must maintain a high index of suspicion for patients presenting with unexplained bradycardia, hypotension, and altered mental status, particularly when accompanied by hypothermia or hyponatremia. Bedside ultrasound serves as a critical tool for identifying pericardial effusions or low cardiac output, which guide resuscitation and prevent dangerous fluid overload. Effective management requires the immediate administration of stress-dose steroids to mitigate potential adrenal insufficiency before initiating levothyroxine therapy. Because aggressive active rewarming can induce circulatory collapse in these patients, passive rewarming is the preferred approach. Identifying and treating the underlying precipitant—most commonly infection—remains essential to preventing mortality. This systematic approach shifts the focus from simple symptom management to addressing the underlying endocrine crisis, turning a life-threatening emergency into a successful intervention.