26 results
Causes of Primary and Secondary Amenorrhea - Differential Diagnosis Algorithm
Primary Amenorrhea - No onset of menarche
Causes of Primary ... Primary Amenorrhea ... • Ovarian - Normal ... Obstruction #Primary ... #Causes #OBGyn
Causes of Anemia with Normal Mean Corpuscular Volume (MCV) - Differential Diagnosis Algorithm
Decreased WBCs
 - Decreased/NormaI
Causes of Anemia ... Differential Diagnosis Algorithm ... Reticulocytosis • Primary ... Hypersplenism • Secondary ... #Causes #Hematology
Approach to Thyroid Function Tests in the Evaluation of Hyperthyroidism
 • Low TSH, Low normal T4
TSH, Low normal ... • Low TSH, normal ... T4 +/- T3 → Primary ... T3 → Central (secondary ... Hyperthyroidism #algorithm
Primary and Secondary Causes of Hypertension - Differential Diagnosis Algorithm
Primary (Essential) (95%) - Onset between age
Primary and Secondary ... Primary (Essential ... Mislabelled - Repeatedly normal ... Mineralocorticoid excess (primary ... #Hypertension #Primary
Adrenal Insufficiency Diagnosis Algorithm - Evaluation of HPA Axis Response to ACTH

Early am cortisol < 3
diagnostic of primary ... this indicates normal ... suggests EITHER primary ... ACTH: - High = primary ... AI - Low = secondary
Hypokalemia Differential Diagnosis Algorithm
Hypertensive:
 • High Al, Low R - Primary aldosteronism
 • High Al, High
R - Primary aldosteronism ... High Al, High R - Secondary ... Hyperplasia • Normal ... Al, Normal R - ... #nephrology #causes
Hypokalemia - Differential Diagnosis Algorithm
Extra-renal Losses:
 • Normal Acid-Base: Low intake
 • Metabolic acidosis: Gl tract
Differential Diagnosis Algorithm ... Extra-renal Losses: • Normal ... secreting tumor, Primary ... • HTN Absent: Loop ... #causes #potassium
Abnormal Lipid Profiles - Differential Diagnosis Algorithm

Increased Cholesterol and Triglycerides 
 - Genetic Causes
Abnormal Lipid Profiles ... Differential Diagnosis Algorithm ... Deficiency • Primary ... Deficiency - Secondary ... Differential #Diagnosis #Algorithm
Hypogonadism Differential Diagnosis Algorithm
 • Low testosterone, Normal or low LH, Normal or low FSH -
Differential Diagnosis Algorithm ... , Normal or low ... LH, Normal or low ... FSH - Secondary ... Elevated FSH - Primary
Adrenal Insufficiency Differential Diagnosis Algorithm
Clinical suspicion: Weakness, fatigue, nausea, musculoskeletal pain, dizziness, volume depletion, abdominal pain,
Weakness, fatigue, nausea ... baseline ACTH - Primary ... insufficiency • Low ... or normal baseline ... ACTH - Secondary