113 results
Thyroid Function Tests (TFTs) and Interpretation

 • TSH, Free T4, Free T3
 • T3 Uptake
 •
Thyroid Function ... Free T4, Free T3 ... • T3 Uptake ... DharSaty #Thyroid #Function ... laboratory #patterns #differential
Laboratory Evaluation of Patients for Thyroid Disease 
Hyperthyroidism:
 • Graves disease - TSH low; free T4
high; in some cases ... , T3 is elevated ... low; free T4 and T3 ... low; free T4 and T3 ... #hyperthyroid #differential
Oropharyngeal and Esophageal Causes of Dysphagia - Differential Diagnosis
Oropharyngeal Dysphagia
 • Neuromuscular causes: CVA/CNS tumor/ALS, Parkinson's,
of Dysphagia - Differential ... Non-relaxation of EG junction ... Achalasia, EG junction ... sclerosis - Functional ... Esophageal #Dysphagia #Differential
Approach to Nausea / Vomiting - Differential Diagnosis Framework
 • Gastrointestinal 
    -
Approach to Nausea ... / Vomiting - Differential ... Disorders • Other Causes ... Genitourinary • Functional ... #Vomiting #Differential
Causes of Hyperkalemia

Hyperkalemia is caused by excess potassium intake, impaired potassium excretion, or transcellular shifts. The
Causes of Hyperkalemia ... Hyperkalemia is caused ... impaired renal function ... #Hyperkalemia #Differential ... #Causes
Hyperthyroidism Overview

Clinical Manifestation of Hyperthyroidism:
 • Fatigue
 • Weight loss
 • Heat intolerance
 • Depression, nervousness
TSH • ↑ Total T3 ... ↑ FT4 and/or ↑ T3 ... : Reduce T4 -> T3 ... hyperthyroidism #causes ... #diagnosis #differential
Hypochloremia - Differential Diagnosis Algorithm

Cause - Decreased Intake:
 • Low salt in diet
 • Exclusive D5W
Hypochloremia - Differential ... intoxication Cause ... transport, renal function ... Gastrointestinal function ... Hypochloremia #Differential
Critical and Emergent Causes of Neuromuscular Weakness
CRITICAL DIAGNOSES 
 - Cerebral cortex or subcortical 
 -
Critical and Emergent Causes ... Neuromuscular junction ... Neuromuscular #Weakness #Differential ... #Neurology #Causes
Diplopia - Double Vision - Differential Diagnosis Algorithm
Clinical Pearls:
 • Diplopia is almost always binocular.
 •
Double Vision - Differential ... a mass as the cause ... Dislocation • Functional ... #DoubleVision #Differential ... Diagnosis #Algorithm #Causes
Causes of Thrombocytopenia and Platelet Disorders - Differential Diagnosis and Workup
History:
 - Prior platelet count, family
Causes of Thrombocytopenia ... Platelet Disorders - Differential ... practices that could cause ... country), thyroid function ... Platelet #Disorders #Differential