19 results
Causes of Hypercalcemia
Hypercalcemia due to increased bone Ca2+ resorption:
 • Primary hyperparathyroidism, Malignancy, Pseudohyperparathyroidism, Renal failure,
Causes of Hypercalcemia ... Pseudohyperparathyroidism, Renal ... failure, Addison's ... #Causes #differential ... calcium #high #endocrinology
Causes of Hyperkalemia
Pseudohyperkalemia
 - Tourniquet use
 - Hemolysis (in vitro)
 - Leukocytosis
 - Thrombocytosis
Intra- to extracellular
Causes of Hyperkalemia ... excretion - Renal ... failure* - Drugs—potassium-sparing ... Selective defect in renal ... obstructive uropathy, renal
Causes of Hypercalcemia
Parathyroid hormone–dependent
Primary hyperparathyroidism
Familial hypocalciuric hypercalcemia
Lithium-associated
Tertiary hyperparathyroidism
Genetic disorders (e.g., multiple endocrine neoplasia type 1 or
Causes of Hypercalcemia ... hormone–independent Renal ... failure, acute ... thyrotoxicosis, adrenal ... #Diagnosis #Endocrinology
Hypokalemia - Differential Diagnosis
Poor Intake 
 - Starvation
 - Anorexia
GI Losses 
 - Vomiting / NG
Hypokalemia - Differential ... Mineralocorticoid excess - Renal ... Diagnosis #Low #Potassium ... #Table #Classification ... #Causes
Hyperkalemia - Differential Diagnosis Framework

PseudoHyperkalemia:
 • Lab error
 • Traumatic venipuncture
 • Hemolysis, thrombocytosis, leukocytosis
 •
resistance Impaired Renal ... deficiency • Renal ... insufficiency/Failure ... Type IV RTA • Renal ... differential #diagnosis #causes
Causes of High-anion Gap and Non-anion Gap Metabolic Acidosis
Causes of High-anion Gap Acidosis:
 • Lactic acidosis
oxoproline) • Renal ... failure (acute ... Renal acidosis ... (with renal insufficiency ... Potassium-sparing
Primary Adrenal Insufficiency
Addison's Disease - Damage of the adrenal glands with lack of cortisol, androgens and
Lung cancer • Renal ... sodium • ↑ Serum potassium ... Check sodium, potassium ... addisons #disease #endocrinology ... #diagnosis #signs
Hyperkalemia - Differential Diagnosis Framework

PseudoHyperkalemia:
 • Lab error
 • Traumatic venipuncture
 • Hemolysis, thrombocytosis, leukocytosis
 •
resistance Impaired Renal ... deficiency • Renal ... insufficiency/Failure ... Type IV RTA • Renal ... differential #diagnosis #causes
Classification of Tumor Lysis Syndrome (TLS) and Treatment of Metabolic Abnormalities of TLS
Laboratory TLS:
 • Uric
Classification of ... 8.0 mg/dL • Potassium ... Intravenous fluids • Renal ... failure - Dialvsis ... hydroxide • Hyperkalemia
Hyperuricemia - Differential Diagnosis Algorithm
Primary - Over-production
     • Increased turnover of nucleotides
Primary
Diabetic acidosis - Renal ... • Chronic renal ... failure • ... Sarcoidosis • Hypercalcemia ... #causes