7 results
Approach to Thyroid Function Tests in the Evaluation of Hyperthyroidism
 • Low TSH, Low normal T4
Approach to Thyroid Function ... T4 +/- T3 → Subclinical ... T4 +/- T3 → Primary ... Hyperthyroidism #algorithm ... endocrinology #TFTs #TSH #Interpretation
Thyrotoxic Periodic Paralysis - Illness Script
 • Epidemiology: Asian men age 20-30 with hyperthyroidism of any
Heavy exercise, fasting ... Hypokalemia +/- low ... high fT4 or high T3 ... • Treatment: Potassium ... hyperthyroidism, Potassium
Hypokalemia - Differential Diagnosis Algorithm

Transcellular Shift:
 • Alkalosis
 • ↑ beta-2 adrenergic simulation 
 • Erythropoiesis
Hypokalemic periodic paralysis ... GI losses (NG suction ... vomiting) • Low ... #nephrology #low ... #potassium
Hypokalemia - Differential Diagnosis
Poor Intake 
 - Starvation
 - Anorexia
GI Losses 
 - Vomiting / NG
type 4) - Salt wasting ... Hypokalemic periodic paralysis ... Differential #Diagnosis #Low ... #Potassium #Table ... #Classification
Hypokalemia Evaluation Algorithm

Before evaluating hypokalemia, life threatening complications such as arrhythmias and paralysis should be looked
Hypokalemia Evaluation Algorithm ... arrhythmias and paralysis ... treated with IV potassium ... consumption • Low ... #nephrology #low
Causes of Hypokalemia
I. Decreased intake
   A. Starvation
   B. Clay ingestion
II. Redistribution into
Increased distal flow ... diuresis, salt-wasting ... Increased secretion of potassium ... Differential #Diagnosis #Low ... #Potassium #Classification
Pragmatic diagnostic algorithm for hypokalemia. 
***Typical presentations: 
 • Vomiting: urine Na/Cl > 1.6, low urine
Pragmatic diagnostic algorithm ... urine Na/Cl > 1.6, low ... confirmed via genetic testing ... correcting serum potassium ... in most cases; interpretation