25 results
Hypercalcemia - Differential Diagnosis Algorithm
Elevated PTH (High or normal):
 • Primary Hyperparathyroidism
 • Familial Hypocalciuric Hypercalcemia
Low
Differential Diagnosis ... Low PTH: • Elevated ... #Differential # ... Diagnosis #Algorithm #causes ... #endocrinology
Metformin Pharmacology Summary
Mechanisms of Action:
 • Suppresses gluconeogenesis by the liver
 • Increases insulin-mediated glucose utilization
agent • Does not cause ... hypoglycemia • Low ... e.g. diarrhea, nausea ... — mitigated by slow ... #diabetes #endocrinology
The Diagnostic Approach to Hyperkalemia
Drugs
 - Amiloride
 - Spironolactone
 - Triamterene
 - Trimethoprim
 - Pentamidine
 -
inhibitors Other causes ... Ketoconazole Low ... Renin - Diabetes ... Algorithm #diagnosis #differential ... #causes
Hypomagnesemia - Etiologies by Mechanism

Decreased GI Uptake 
 - Poor dietary intake (particularly common in alcoholics)
- Uncontrolled diabetes ... Hypomagnesemia #Differential ... #Diagnosis #Low ... #Magnesium #Table ... Classification #Causes
Etiologies of Hypernatremia - Differential Diagnosis
GI losses / Insensible losses
Sodium Overload
Transcellular Movement of Water
Central Diabetes Insipidus
Hypernatremia - Differential ... Water Central Diabetes ... cisplatin) - Chronic hypercalcemia ... #Diagnosis #Table ... #Causes
Adrenal Insufficiency Differential Diagnosis Algorithm
Clinical suspicion: Weakness, fatigue, nausea, musculoskeletal pain, dizziness, volume depletion, abdominal pain,
Insufficiency Differential ... Weakness, fatigue, nausea ... hyponatremia, hyperkalemia ... insufficiency • Low ... Diagnosis #Algorithm #endocrinology
Causes of Polyuria - Differential Diagnosis
Excess Intake of Water:
 • Primary polydipsia (a.k.a. "psychogenic polydipsia")
 •
Causes of Polyuria ... - Differential ... Diabetes Insipidus ... • Central Dl (Low ... Hereditary, Lithium, Hypercalcemia
Hypercalcemia Evaluation
1) Clinical clues
 - Is the patient symptomatic?
 - Family history?
 - Have you done
Hypercalcemia Evaluation ... 1) Clinical clues ... FeCa <1 %) - Low ... #workup #differential ... #diagnosis #endocrinology
Causes of Chronic Kidney Disease - Differential Diagnosis Algorithm
Decreased kidney function (eGFR < 60 ml/min/1.73 m2)
Causes of Chronic ... Kidney Disease - Differential ... 60 ml/min/1.73 m2 ... Proteinuria) • Diabetes ... Hyperoxaluria • Hypercalcemia
Etiologies of Hypoaldosteronism

Hyporeninemic Hypoaldosteronism (Low Renin, Low Aldosterone)
 - Diabetic Nephropathy 
 - NSAIDs
Non-Hyporeninemic Hypoaldosteronism (Normal
Hypoaldosteronism (Low ... ) - Diabetic Nephropathy ... Hypoaldosteronism #Differential ... Aldosterone #Comparison #Table ... #Causes