114 results
Laboratory Evaluation of Patients for Thyroid Disease 
Hyperthyroidism:
 • Graves disease - TSH low; free T4
radioactive iodine uptake ... by suppressed uptake ... focal increased uptake ... by suppressed uptake ... #hyperthyroid #differential
Hypokalemia - Differential Diagnosis Algorithm
Extra-renal Losses:
 • Normal Acid-Base: Low intake
 • Metabolic acidosis: Gl tract
Hypokalemia - Differential ... Normal Acid-Base: Low ... intake • Metabolic ... #Hypokalemia #Differential ... #nephrology
Hypokalemia - Differential Diagnosis Algorithm

Transcellular Shift:
 • Alkalosis
 • ↑ beta-2 adrenergic simulation 
 • Erythropoiesis
Hypokalemia - Differential ... vomiting) • Low ... K intake (anorexia ... Diagnosis #Algorithm #nephrology ... #low #potassium
Causes of Nephrolithiasis - Differential Diagnosis Algorithm
Radio-opaque - Calcium-containing - 90% of stones
Radiolucent - Non-calcium 10%
Nephrolithiasis - Differential ... overproduction • Low ... solubility: • Low ... Nephrolithiasis #Nephrology ... #Differential #
Primary Metabolic Alkalosis - Differential Diagnosis Algorithm
Volume Depleted 2° hyperaldosteronism
 • Low Urine Cl-: Vomiting, NGT
Metabolic Alkalosis - Differential ... , NGT suction, Low ... Cl intake, Diuretics ... Metabolic #Alkalosis #Differential ... Diagnosis #Algorithm #nephrology
Primary Metabolic Alkalosis - Differential Diagnosis Algorithm
Volume Depleted - 2° hyperaldosteronism
 • Low Urine Cl-: Vomiting,
Metabolic Alkalosis - Differential ... , NGT suction, Low ... Cl intake, Diuretics ... Metabolic #Alkalosis #Differential ... Diagnosis #Algorithm #Nephrology
Hyperthyroidism - Differential Diagnosis Algorithm
High/Normal Radioiodine Uptake
 - Autoimmune Thyroid Disease:
    • Grave's
Hyperthyroidism - Differential ... Normal Radioiodine Uptake ... Trophoblastic Neoplasm Low ... Radioiodine Uptake ... #HighThyroid #Differential
Approach to the Diagnosis of Hyperthyroidism - Differential Diagnosis and Workup Algorithm

 • Secondary Hyperthyroidism (↑↔TSH,
Hyperthyroidism - Differential ... Iodine Scan - High Uptake ... Graves disease • Low ... Iodine Scan - Low ... Uptake: • Early
Causes of Hypokalemia - Differential Diagnosis Algorithm
Once pseudohypokalemia is ruled out, causes of hypokalemia can be
Hypokalemia - Differential ... filling of bucket (low ... intake) 2. ... #Hypokalemia #Differential ... Causes #workup #nephrology
Causes of Hypernatremia - Differential Diagnosis Algorithm
Hypernatremia - Excess free water loss, Serum Sodium >145 mmol/L
High
Hypernatremia - Differential ... mannitol, glucosuria Low ... • Inadequate intake ... Hypernatremia #Nephrology ... #Differential #