20 results
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
Algorithm for patients with hypokalemia on the basis of the potassium-to-creatinine ratio in the urine
Urine K+
creatinine) • Cell shift ... ↑ Aldosterone: Kidney ... #urine #potassium ... differential #algorithm #diagnosis ... #nephrology
Causes of Polyuria - Differential Diagnosis Algorithm
Polyuria - Urine Output > 3L/day, Increased Urine Volume (>2ml/min)
Osmotic
- Differential Diagnosis ... concentration (e.g ... >50% - Proper kidney ... - Unresponsive Kidney ... #Nephrology #Differential
Management of Pediatric Kidney Stones
Acute Managment:
 • Pain relief: NSAIDs, opioids
 • Facilitating passage of stone:
Management of Pediatric Kidney ... therapy (MET): e.g ... retrieve stone using urine ... involvement: eyes, TFT, ECG ... Management #Pediatrics #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 ... without ↑ urine ... #Causes #nephrology
Hypokalemia Evaluation Algorithm

Before evaluating hypokalemia, life threatening complications such as arrhythmias and paralysis should be looked
differentiating kidney ... A urine K/Cr ratio ... urinary losses: • High ... #diagnosis #Algorithm ... #nephrology #low
Causes of Hypernatremia - Differential Diagnosis Algorithm
Hypernatremia - Excess free water loss, Serum Sodium >145 mmol/L
High
Sodium >145 mmol/L High ... Urine Osmolality ... diuresis (see Polyuria ... scheme) e.g., mannitol ... Hypernatremia #Nephrology
Hyperkalemia - Differential Diagnosis Framework

PseudoHyperkalemia:
 • Lab error
 • Traumatic venipuncture
 • Hemolysis, thrombocytosis, leukocytosis
 •
Diagnosis Framework ... phlebotomy High ... Intracellular Shift ... #causes #potassium ... #high #nephrology
Hyperkalemia - Differential Diagnosis Framework

PseudoHyperkalemia:
 • Lab error
 • Traumatic venipuncture
 • Hemolysis, thrombocytosis, leukocytosis
 •
Diagnosis Framework ... phlebotomy High ... • Recent IV potassium ... Intracellular Shift ... #high #nephrology
Metabolic Alkalosis - Urinary Chloride Algorithm
Cl- responsive metabolic alkalosis
 • Kidney loss of Cl-
to diarrhea, a high ... high in kidney ... of sodium and potassium ... #Algorithm #nephrology ... #differential #diagnosis