16 results
Causes of Hypernatremia - Differential Diagnosis Algorithm
Hypernatremia - Excess free water loss, Serum Sodium >145 mmol/L
High
- Differential Diagnosis ... Sodium >145 mmol/L High ... diuresis (see Polyuria ... scheme) e.g., mannitol ... #Nephrology #Differential
Polyuria - Differential Diagnosis Algorithm
Polyuria = >3L Urine output / 24 hours
Urine osmolality = 2 (Na
Diagnosis Algorithm ... glucose mg/dL]/18 HIGH ... Hyperglycemia, High ... solute intake (e.g ... #Algorithm #nephrology
Causes of Polyuria - Differential Diagnosis
Excess Intake of Water:
 • Primary polydipsia (a.k.a. "psychogenic polydipsia")
 •
- Differential Diagnosis ... SGLT2 inhibitors (e.g ... Hereditary, Lithium, Hypercalcemia ... #Differential #Diagnosis ... #Causes #nephrology
Hyperkalemia - Differential Diagnosis Framework

PseudoHyperkalemia:
 • Lab error
 • Traumatic venipuncture
 • Hemolysis, thrombocytosis, leukocytosis
 •
Diagnosis Framework ... phlebotomy High ... Intracellular Shift ... causes #potassium #high ... #nephrology
Physiologic Approach to Hypotonic Hyponatremia
The next time you have a case of hypotonic hyponatremia, give the
diuresis can be high ... : Hypovolemia, Hypervolemia ... #differential #diagnosis ... #table #sodium ... #nephrology
Drugs associated with hypokalemia and hypomagnesemia

Hypokalemia
- Shift from extracellular fluid to intracellular fluid compartment
  -
associated with hypokalemia ... - Shift from extracellular ... - Insulin (high ... #differential #diagnosis ... #nephrology #Causes
Hyperkalemia - Differential Diagnosis Framework

PseudoHyperkalemia:
 • Lab error
 • Traumatic venipuncture
 • Hemolysis, thrombocytosis, leukocytosis
 •
Diagnosis Framework ... phlebotomy High ... Intracellular Shift ... causes #potassium #high ... #nephrology
Algorithm for patients with hypokalemia on the basis of the potassium-to-creatinine ratio in the urine
Urine K+
patients with hypokalemia ... creatinine) • Cell shift ... syndrome #hypokalemia ... differential #algorithm #diagnosis ... #nephrology
Reflex Testing - Causes of Hyporeflexia and Hyperreflexia
Focal Hyporeflexia: 
 • Radiculopathy, Mononeuropathy, Polyneuropathy, Acute stroke,
Hyporeflexia: • Hypercalcemia ... polyneuropathy (e.g ... #differential #diagnosis ... #table #neurology
Rhabdomyolysis - Differential Diagnosis Framework and Management Summary

Causes of Rhabdomyolysis:
 • Trauma:
	- Immobilization
	- Crush injury
	- Compartment
- Differential Diagnosis ... Hyperuricemia • Hyponatremia ... Shift of extracellular ... per day until stable ... causes #treatment #nephrology