34 results
Hypokalemia - Differential Diagnosis Algorithm
Extra-renal Losses:
 • Normal Acid-Base: Low intake
 • Metabolic acidosis: Gl tract
Algorithm Extra-renal ... • HTN, High Aldosterone ... Loop and thiazide diuretics ... Algorithm #causes #potassium ... #low #nephrology
Physiologic Approach to Hypotonic Hyponatremia
The next time you have a case of hypotonic hyponatremia, give the
Sodium loss (diuretics ... can be high or ... Cirrhosis, Nephrotic syndrome ... differential #diagnosis #table ... #sodium #nephrology
Primary Metabolic Alkalosis - Differential Diagnosis Algorithm
Volume Depleted 2° hyperaldosteronism
 • Low Urine Cl-: Vomiting, NGT
Cl intake, Diuretics ... (late) • High ... Urine Cl-: Diuretics ... PRA: Renal artery ... Diagnosis #Algorithm #nephrology
Hypokalemia Differential Diagnosis Algorithm
Hypertensive:
 • High Al, Low R - Primary aldosteronism
 • High Al, High
Hypertensive: • High ... aldosteronism • High ... >20 mEq/24 h - Diuretics ... Diagnosis #Algorithm #nephrology ... #causes #low #potassium
Hypernatremia - Differential Diagnosis Workup Algorithm

1) Check Urine Osmolality:
 > 600 mOsm/kg - Implies extrarenal mechanism
mOsm/kg - Implies renal ... • Euvolemic (Low ... , Cushing syndrome ... Workup #Algorithm #nephrology ... #sodium
Primary Metabolic Alkalosis - Differential Diagnosis Algorithm
Volume Depleted - 2° hyperaldosteronism
 • Low Urine Cl-: Vomiting,
Cl intake, Diuretics ... (late) • High ... Urine Cl-: Diuretics ... PRA: Renal artery ... Diagnosis #Algorithm #Nephrology
Hypokalemia - Differential Diagnosis Algorithm

Transcellular Shift:
 • Alkalosis
 • ↑ beta-2 adrenergic simulation 
 • Erythropoiesis
• Refeeding syndrome ... Losses Non-renal ... • Discontinued diuretic ... Diagnosis #Algorithm #nephrology ... #low #potassium
Mechanisms of nephron damage in cardiorenal syndrome
 • Increased renal interstitial pressure
 • Hypoperfusion
 • Reduced
• Increased renal ... blood flow • ... hypertrophy • Sodium ... activities • Diuretic ... pathophysiology #nephrology
Workup for Hypophosphatemia - Differential Diagnosis Framework
Rule out spurious hypophosphatemia: paraproteinemia, acute leukemia
Measure Urine Fractional Excretion
paraproteinemia, acute ... FEPO4 ≥ 5% - Renal ... • Normal or High ... Inh., Osmotic diuresis ... Workup #phosphate #nephrology
Causes of Hypomagnesemia
 • Redistribution: IV glucose, Correction of diabetic ketoacidosis, IV hyperalimentation, Refeeding after starvation,
after starvation, Acute ... steatorrhea) • Renal ... , Potassium depletion ... differential #diagnosis #nephrology ... #magnesium #low