28 results
Approach to the Diagnosis of Hyperthyroidism - Differential Diagnosis and Workup Algorithm

 • Secondary Hyperthyroidism (↑↔TSH,
Diagnosis and Workup Algorithm ... ↑Total T3/Free T4 ... ↔Total T3/Free T4 ... • Exogenous thyroid ... Differential #Diagnosis #Algorithm
Approach to Thyroid Function Tests in the Evaluation of Hyperthyroidism
 • Low TSH, Low normal T4
Approach to Thyroid ... TSH, Low normal T4 ... symmetrically enlarged thyroid ... → Radioactive Iodine ... #algorithm #diagnosis
Hyperthyroidism (low TSH, High T4/T3) - Diagnostic Algorithm

Radioactive iodine scan – get if concern for nodular
Hyperthyroidism ... (low TSH, High T4 ... ) - Diagnostic Algorithm ... Radioactive iodine ... concern for nodular thyroid
Laboratory Evaluation of Patients for Thyroid Disease 
Hyperthyroidism:
 • Graves disease - TSH low; free T4
Disease Hyperthyroidism ... increased radioactive iodine ... increased radioactive iodine ... decreased radioactive iodine ... uptake Hypothyroidism
Thyroid Disorders - Differential Diagnosis Algorithm
Hypothyroidism:
 • Hasimoto’s
 • Radioactive Iodine 
 • Hypopituitarism
 • Iodine
Thyroid Disorders ... Differential Diagnosis Algorithm ... Hypothyroidism ... • Radioactive Iodine ... Hypopituitarism • Iodine
Hyperthyroidism Overview

Clinical Manifestation of Hyperthyroidism:
 • Fatigue
 • Weight loss
 • Heat intolerance
 • Depression, nervousness
Toxicosis • Iodine ... T3 • ↑ Free T4 ... with radioactive iodine ... Thionamide - Iodine ... Glucocorticoids: Reduce T4
Algorithm for the diagnostic workup of hyperthyroidism. (T3 = triiodothyronine; T4 = thyroxine; TSH = thyroid-stimulating
Algorithm for the ... triiodothyronine; T4 ... thyroxine; TSH = thyroid-stimulating ... #hyperthyroidism ... #algorithm #diagnosis
Amiodarone Thyroid Complications
Amiodarone: 
 - iodine-rich, similar structure to T4, with half life up to 100d
Amiodarone: - iodine-rich ... similar structure to T4 ... - can prevent T4 ... dz: iodine load ... Amiodarone Induced Hypothyroidism
Pharmaceutical Management of Hyperthyroidism / Thyroid Storm
Beta-Blockers 
• Decreases sympathetic hyperactivity 
• Partially blocks peripheral conversion
Management of Hyperthyroidism ... conversion of T4 ... conversion of T4 ... • Teratogenic Iodine ... accompany storm #Hyperthyroidism
Differentiation of Causes of Hyperthyroidism According to Pattern of Radionucleotide Uptake
Reduced uptake:
 • Thyroiditis
 • Exogenous
Differentiation of Causes of Hyperthyroidism ... thyroxine • Iodine ... loading • Ectopic thyroid ... disease • Excess thyroid-stimulating ... #radioactive #iodine