4 results
Approach to Thyroid Function Tests in the Evaluation of Hyperthyroidism
 • Low TSH, Low normal T4
Approach to Thyroid ... T4 +/- T3 → Primary ... symmetrically enlarged thyroid ... → Radioactive Iodine ... #algorithm #diagnosis
Hyperthyroidism Overview

Clinical Manifestation of Hyperthyroidism:
 • Fatigue
 • Weight loss
 • Heat intolerance
 • Depression, nervousness
• Insomnia Primary ... Diagnosis: • ↓ Low TSH ... or Thyrotropin (TSH ... psychosis - CHF - Hypotension ... • Labs: - ↓ TSH
Hyperthyroidism (low TSH, High T4/T3) - Diagnostic Algorithm

Radioactive iodine scan – get if concern for nodular
Hyperthyroidism ... (low TSH, High T4 ... Radioactive iodine ... concern for nodular thyroid ... #Hyperthyroid #
Hypothyroidism - Differential Diagnosis Algorithm
Central Hypothyroidism
 • Isolated TSH Deficiency
 • Panhypopituitarism
Thyroid Hormone Resistance
Iatrogenic
Primary Hypothyroidism
 -
Differential Diagnosis Algorithm ... • Isolated TSH ... Panhypopituitarism Thyroid ... Resistance Iatrogenic Primary ... • Severe Iodine