12 results
Approach to Thyroid Function Tests in the Evaluation of Hyperthyroidism
 • Low TSH, Low normal T4
Evaluation of Hyperthyroidism ... Possibly Central Hypothyroidism ... → Radioactive Iodine ... #algorithm #diagnosis ... #endocrinology
Approach to the Diagnosis of Hyperthyroidism - Differential Diagnosis and Workup Algorithm

 • Secondary Hyperthyroidism (↑↔TSH,
Diagnosis and Workup Algorithm ... Radioactive Iodine ... disease • Low iodine ... Differential #Diagnosis #Algorithm ... #endocrinology
Causes of Hyponatremia - Differential Diagnosis Algorithm
Syndrome of Inappropriate ADH - Euvolemic; no physiologic stimulus to
Differential Diagnosis Algorithm ... Hormonal changes • Hypothyroidism ... • Adrenal insufficiency ... polydipsia • Insufficient ... #Hyponatremia #Nephrology
Causes of Hyponatremia - Differential Diagnosis Algorithm
Syndrome of Inappropriate ADH - Euvolemic; no physiologic stimulus to
Differential Diagnosis Algorithm ... Hormonal changes • Hypothyroidism ... • Adrenal insufficiency ... polydipsia • Insufficient ... #Hyponatremia #Nephrology
Hyperthyroidism (low TSH, High T4/T3) - Diagnostic Algorithm

Radioactive iodine scan – get if concern for nodular
Hyperthyroidism ... ) - Diagnostic Algorithm ... Radioactive iodine ... #Hyperthyroidism ... #Workup #Endocrinology
Hyponatremia - Differential Diagnosis Algorithm
ADH Independent:
 • Tea and Toast Syndrome, Beer Potomania - Low solute
Differential Diagnosis Algorithm ... • Euvolemic - Hypothyroidism ... , adrenal insufficiency ... Differential #Diagnosis #Algorithm ... #causes #nephrology
Modified Hyponatremia Algorithm
Hypertonic Hyponatremia: Hyperglycemia, Mannitol, Urologic irrigants
Hypotonic Hyponatremia: 
 • ADH ON (UOsm > 100):
Modified Hyponatremia Algorithm ... Medications (diuretics), Hypothyroidism ... , Adrenal insufficiency ... #Hyponatremia #Algorithm ... diagnosis #sodium #nephrology
Hypernatremia Diagnosis and Workup

Step 1 . Repeat the sodium concentration.
Step 2.  Check plasma osmolality.
NORMAL PLASMA
• SIADH • hypothyroidism ... • adrenal insufficiency ... Diagnosis #Workup #Algorithm ... #Nephrology
Causes of Hyponatremia - Differential Diagnosis Algorithm
Hypovolemia, UNa > 20: 
 • Renal losses, Diuretic excess,
Differential Diagnosis Algorithm ... deficiency, Salt-losing ... Glucocorticoid deficiency, Hypothyroidism ... Differential #Diagnosis #Algorithm ... #Causes #nephrology
Physiologic Approach to Hypotonic Hyponatremia
The next time you have a case of hypotonic hyponatremia, give the
normal volume-based algorithm ... or low Uosm), Hypothyroidism ... , Adrenal Insufficiency ... table #sodium #nephrology