29 results
Approach to Thyroid Function Tests in the Evaluation of Hyperthyroidism
 • Low TSH, Low normal T4
Approach to Thyroid ... normal T4 +/- T3 ... TSH, high T4 +/- T3 ... symmetrically enlarged thyroid ... TSH, high T4 +/- T3
Laboratory Evaluation of Patients for Thyroid Disease 
Hyperthyroidism:
 • Graves disease - TSH low; free T4
Disease Hyperthyroidism ... iodine uptake; thyroid ... iodine uptake Hypothyroidism ... positive • Ablative hypothyroidism ... • Infantile hypothyroidism
Algorithm for the diagnostic workup of hyperthyroidism. (T3 = triiodothyronine; T4 = thyroxine; TSH = thyroid-stimulating
diagnostic workup of hyperthyroidism ... (T3 = triiodothyronine ... thyroxine; TSH = thyroid-stimulating ... #hyperthyroidism
Hyperthyroidism Overview

Clinical Manifestation of Hyperthyroidism:
 • Fatigue
 • Weight loss
 • Heat intolerance
 • Depression, nervousness
Hyperthyroidism ... thyrotoxicosis • T3 ... TSH • ↑ Total T3 ... ↑ FT4 and/or ↑ T3 ... : Reduce T4 -> T3
Approach to the Diagnosis of Hyperthyroidism - Differential Diagnosis and Workup Algorithm

 • Secondary Hyperthyroidism (↑↔TSH,
↑↔TSH, ↑Total T3 ... (↓TSH, ↔Total T3 ... (↓TSH, ↑Total T3 ... (↔TSH, ↔Total T3 ... • Exogenous thyroid
Pharmaceutical Management of Hyperthyroidism / Thyroid Storm
Beta-Blockers 
• Decreases sympathetic hyperactivity 
• Partially blocks peripheral conversion
Management of Hyperthyroidism ... conversion of T4 to T3 ... conversion of T4 to T3 ... conversion ofT4 to T3 ... accompany storm #Hyperthyroidism
Abnormal Serum TSH - Differential Diagnosis Algorithm
Increased TSH
 • Hypothyroidism
 • Sub-clinical Hypothyroidism
 • Recovery from
Increased TSH • Hypothyroidism ... • Sub-clinical Hypothyroidism ... Recovery from Non-Thyroid ... Thyrotoxicosis • Non-Thyroid ... Thyrotoxicosis • T3
Myoedema in Hypothyroidism on Physical Exam

Hypothyroidism is a clinical syndrome resulting from the production, secretion or
inadequate action of thyroid ... receptors for thyroid ... abolished tendon reflexes ... (shown in the video ... percussion by the reflex
Hypothyroidism and Hyperthyroidism - Symptoms and Signs
Hypothyroidism:
 - General - From asymptomatic to myxedema coma, “Like
Hypothyroidism and ... Hyperthyroidism ... • Tendon Reflex ... • Increased Reflexes ... osculating over thyroid
Hyperthyroidism (low TSH, High T4/T3) - Diagnostic Algorithm

Radioactive iodine scan – get if concern for nodular
Hyperthyroidism ... low TSH, High T4/T3 ... concern for nodular thyroid ... #Hyperthyroidism