43 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
of Patients for Thyroid ... Disease Hyperthyroidism ... high; in some cases ... iodine uptake Hypothyroidism ... • Infantile hypothyroidism
Hyperthyroidism Overview

Clinical Manifestation of Hyperthyroidism:
 • Fatigue
 • Weight loss
 • Heat intolerance
 • Depression, nervousness
thyrotoxicosis • T3 ... TSH • ↑ Total T3 ... ↑ FT4 and/or ↑ T3 ... : Reduce T4 -> T3 ... #causes #diagnosis
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
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
Thyroid Function Test Interpretation Table

TSH, Free T4, Free T3 and Associated Condition
#Diagnosis #Endocrinology #Hyperthyroid #Hypothyroid #Function
Thyroid Function ... Interpretation Table ... Free T4, Free T3 ... TFTs #Comparison #Table
Hyperthyroidism and Thyrotoxicosis Interpretation Table
 - Autonomy (Graves)
 - Autonomy (toxic nodule)
 - Exogenous thyroid hormone
Hyperthyroidism ... Interpretation Table ... - Exogenous thyroid ... @mghmedres #Hyperthyroidism ... Interpretation #Table
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