20 results
Causes of Hypernatremia - Differential Diagnosis
Inadequate water intake:
 • Lack of access to water
Extrarenal hypotonic fluid
Hypernatremia - Differential ... perspiration Renal ... • Osmotic diuresis ... Diagnosis #Causes #nephrology ... #sodium #high
Primary Metabolic Alkalosis - Differential Diagnosis Algorithm
Volume Depleted 2° hyperaldosteronism
 • Low Urine Cl-: Vomiting, NGT
Low Cl intake, Diuretics ... (late) • High ... Urine Cl-: Diuretics ... PRA: Renal artery ... Diagnosis #Algorithm #nephrology
Primary Metabolic Alkalosis - Differential Diagnosis Algorithm
Volume Depleted - 2° hyperaldosteronism
 • Low Urine Cl-: Vomiting,
Low Cl intake, Diuretics ... (late) • High ... Urine Cl-: Diuretics ... PRA: Renal artery ... Diagnosis #Algorithm #Nephrology
Causes of Metabolic Alkalosis - Differential Diagnosis Algorithm
GI Losses - Gastric
 • Vomiting
 • NG suction
GI
Chloridorrhea Renal ... • Penicillins Renal ... tubular transport • Diuretics ... MetabolicAlkalosis #NonGap #Nephrology ... #Differential #
Hypokalemia - Differential Diagnosis Algorithm
Extra-renal Losses:
 • Normal Acid-Base: Low intake
 • Metabolic acidosis: Gl tract
Hypokalemia - Differential ... Algorithm Extra-renal ... Syndrome • HTN, High ... Loop and thiazide diuretics ... potassium #low #nephrology
Drugs associated with hypokalemia and hypomagnesemia

Hypokalemia
- Shift from extracellular fluid to intracellular fluid compartment
  -
- Insulin (high ... foscarnet - Diuretics ... and other loop diuretics ... #Medications #differential ... #diagnosis #nephrology
Diuretics and Agents Regulating Renal Excretion

Carbonic Anhydrase Inhibitors (Acetazolamide, Dichlorphenamide)
 • Glaucoma
 • Epilepsy
 • Altitude
Regulating Renal ... ; High-Ceiling Diuretics ... #Renal #Excretion ... #Diuresis #Nephrology ... #Pharmacology #
Physiologic Approach to Hypotonic Hyponatremia
The next time you have a case of hypotonic hyponatremia, give the
≥100): SIADH, Renal ... Sodium loss (diuretics ... can be high or ... #Hyponatremia #differential ... table #sodium #nephrology
Workup for Hypophosphatemia - Differential Diagnosis Framework
Rule out spurious hypophosphatemia: paraproteinemia, acute leukemia
Measure Urine Fractional Excretion
Hypophosphatemia - Differential ... FEPO4 ≥ 5% - Renal ... • Normal or High ... Inh., Osmotic diuresis ... Workup #phosphate #nephrology
Hyperkalemia - Differential Diagnosis Framework

PseudoHyperkalemia:
 • Lab error
 • Traumatic venipuncture
 • Hemolysis, thrombocytosis, leukocytosis
 •
Hyperkalemia - Differential ... phlebotomy High ... • K sparing diuretics ... causes #potassium #high ... #nephrology