20 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 Hyponatremia - Differential Diagnosis Algorithm
Hypovolemia, UNa > 20: 
 • Renal losses, Diuretic excess,
UNa > 20: • Renal ... Bicarbonaturia with renal ... Acute or chronic renal ... failure Hypervolemia ... #nephrology
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
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 ... #nephrology
Hyperuricemia - Differential Diagnosis Algorithm
Primary - Over-production
     • Increased turnover of nucleotides
Primary
Diabetic acidosis - Renal ... • Chronic renal ... failure • ... Sarcoidosis • Hypercalcemia ... #causes
Hyperkalemia - Differential Diagnosis Framework

PseudoHyperkalemia:
 • Lab error
 • Traumatic venipuncture
 • Hemolysis, thrombocytosis, leukocytosis
 •
resistance Impaired Renal ... deficiency • Renal ... insufficiency/Failure ... Type IV RTA • Renal ... potassium #high #nephrology
Hyperkalemia - Differential Diagnosis Framework

PseudoHyperkalemia:
 • Lab error
 • Traumatic venipuncture
 • Hemolysis, thrombocytosis, leukocytosis
 •
resistance Impaired Renal ... deficiency • Renal ... insufficiency/Failure ... Type IV RTA • Renal ... potassium #high #nephrology
Classification of Diabetes Insipidus

Central or neurogenic diabetes insipidus:
 - Congenital - Structural malformations affecting the hypothalamus
Classification of ... Acquired - Primary renal ... uropathy, Metabolic causes ... , hypercalcemia) ... #Types #Nephrology
Causes of Secondary Hypertension - Workup and Differential Diagnosis
Approach (when evaluation should be done):
1. Severe or
papilledema, heart failure ... eg, presence of renal ... : Renal artery stenosis ... Vasculitis • Endocrinologic ... Renal parenchymal
Physiologic Approach to Hypotonic Hyponatremia
The next time you have a case of hypotonic hyponatremia, give the
≥100): SIADH, Renal ... Hypothyroidism, Adrenal ... Present (Uosm <100): Renal ... with poor renal ... perfusion (Heart failure